10 Ruby Developer & Programmer interview questions and answers
Find and hire talent with confidence. Prepare for your next interview. The right questions can be the difference between a good and great work relationship.
What are some advantages of using Ruby?
You want a programmer who can really play to the strengths of the Ruby programming language. Here are some of the key advantages of this language:
- Pure Object-Oriented Language: Everything in Ruby is an objectโeven methods, classes, and booleans. This greatly simplifies things from the coderโs perspective and opens up a range of possibilities.
- Open-Source: Ruby is 100% free and open-source, with a large and enthusiastic community that can be tapped into as a resource.
- Metaprogramming: Ruby is widely considered to be one of the best programming languages out there for metaprogramming, or the ability to write code that can act on other code instead of data.
- Clean and Simple Syntax: The syntax is simple and concise, which allows developers to solve complex programs with fewer lines of code. It also helps that the code is human readable, and easy to follow.
How would you freeze an object in Ruby? Can you provide a simple example?
Sometimes it can be useful to prevent an object from being changed. This can be accomplished using the freeze method (Object.freeze) as in the sample code below.
water.freeze
if( water.frozen? )
puts "Water object is a frozen object"
else
puts "Water object is a normal object"
end
Ruby provides four types of variables. List them and provide a brief explanation for each.
The four types of variables in Ruby are as follows:
- Global variables begin with $ and are accessible from anywhere within the Ruby program regardless of where they are declaredโit stands to reason that they must be handled with care.
- Local variables begin with a lowercase letter or an underscore. The scope of a local variable is confined to the code construct within which it is declared.
- Class variables begin with @@ and are shared by all instances of the class that it is defined in.
- Instance variables begin with @ and are similar to class variables except that they are local to a single instance of a class in which they are instantiated.
Name the three levels of access control for Ruby methods.
In Ruby, methods may either be public, protected, or private. Public methods can be called by anyone. Protected methods are only accessible within their defining class and its subclasses. Private methods can only be accessed and viewed within their defining class.
Can you explain the role of thread pooling in relation to the thread lifecycle in Ruby?
In Ruby, the lifecycle of a single thread starts automatically as soon as CPU resources are available. The thread runs the code in the block where it was instantiated and obtains the value of the last expression in that block and returns it upon completion. Threads use up resources, but running multiple threads at a time can improve an appโs performance. Thread pooling is a technique wherein multiple pre-instantiated reusable threads are left on standby, ready to perform work when needed. Thread pooling is best used when there are a large number of short tasks that must be performed. This avoids the overhead of having to create a new thread every time a small task is about to be performed.
Can you explain how Ruby looks up a method to invoke?
Since Ruby is a pure object-oriented language, itโs important to make sure your developer thoroughly understands how objects work. The first place that Ruby looks for a method is in the objectโs metaclass or eigenclassโthe class that contains methods directly defined on the object. If the method cannot be found in an objectโs metaclass, Ruby will then search for the method in the ancestors of an objectโs class. The list of ancestors for any class starts with the class of the object itself, and climbs parent classes until it reaches the Object, Kernel, and BasicObject classes at the top of the Ruby class hierarchy. If Ruby cannot find the method, it will internally send another method aptly called โmethod_missing?โ to the object class. Ruby will repeat another search for this method, and will at least find it in the object class, provided the programmer did not see fit to define the โmethod_missing?โ class earlier in the ancestry of the object.
Find and fix the bug within the code below.
class Home
attr_reader :address
def initialize(a)
address = a
end
def call
# perform a process that requires @address
end
private
def address=(a)
@address = clean(a)
end
def clean(a)
# return sanitized address
end
end
Normally if Ruby encounters an identifier, and the identifier does not reference a defined local variable, Ruby will try to call a method with the given name. However, when Ruby encounters address = a within the initialize method, it treats address = a as a local variable initialization and fails to invoke the setter. This occurs when Ruby encounters an identifier beginning with a lowercase character or underscore on the left-hand side of an assignment operator. The solution is to clarify that we want to call the writer method address = by prepending address with the self keyword. The initialize method has been reproduced below:
def initialize(a)
self.address = a
end
Alternatively, you could also fix the bug by directly assigning the value to the instance variable within the initialize method like so:
def initialize(a)
@address = clean(a)
end
Explain the role of modules and mixins in Ruby.
Modules are Rubyโs way of grouping methods, classes, and constants together to provide a namespace for preventing name clashes. The second purpose of modules is to use them as mixins. Technically, Ruby only supports single inheritance, but by using modules as mixins, it is possible to share code among different classesโa key advantage of multiple inheritanceโwithout having to give up the simplicity of the single inheritance paradigm.
What are blocks and procs?
A block is basically Rubyโs version of a closureโa block of code that can be wrapped up into a proc (a type of function) that can then be stored in a variable or passed to a method and run when desired. Blocks can syntactically be written as blocks of code between { } or the do and end keywords. The standard way to create a proc is depicted in the code block below.
> my_proc = Proc.new { |arg1| print "#{arg1}! " }
Predict the output of the code below. Explain your answer.
-> (s) {p s} [โIโm a Procโ]
This question highlights the syntactical elegance of Ruby. A seasoned coder can perform a lot with a single line of Ruby code. The -> operator, or โstabby procโ as it is often called, is a way to create a proc that is also a lambda, or nameless function. This proc takes the parameter s and executes the block {p s}, which is shorthand for puts(s.inspect) before passing the string โIโm a Procโ using the square bracket syntax in place of the typical โcallโ method. The result is an elegant single line of code that prints the string โIโm a Procโ to the console.
Ruby Developers & Programmers you can meet on Upwork
- $50/hr $50 hourly
Ali A.
- 5.0
- (10 jobs)
Lahore, PBRuby
RSpecWeb Services DevelopmentAPIDatabase DesignRuby on RailsPostgreSQLAmazon Web ServicesMySQLWeb DevelopmentJavaScriptHTMLAngularJSI've studied computer science. I have an experience of Web Development with the flavor of HTML, CSS, Bootstrap, JavaScript and other web development tools. I really enjoy this fact that thousands of users use applications that are developed by me. The ultimate dream is that one-day thousands will grow into millions or billions. I HAVE A DREAM! Overall if summarized my experience that would be exploring, organizing information, problem-solving and implementation. Languages are essential for expressing your programming skills overall. From EXPLORING attribute I have worked around lots of different languages. 1) Ruby 2) Typescript 3) Javascript 4) Python ( a new sensation I always wanted to explore Erlang but then I found this beauty. Python leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.) 5) PHP In assistance to above languages below frameworks come into play, 1) Ruby on Rails 2) Laravel 3) Django Databases are the main central storage of any web application. I got experience in both SQL and NoSQL 1) Postgres 2) Mysql 3) SQLite 4) MongoDB The game never ended on the server side for me. Frontend/public facing part of the web application has been also highly evolved. Everyone wants to use Single Page Applications - The SPAs. I got experience in the following 1) React JS/TS 2) Angular JS Testing and Test Driven Development(TDD) is also an essential thing for any solid applications. I can write automated tests in following 1) RSpec 2) Capybara Deployment is essential to distribute your application out in the wild. I got experience in the following tools and technologies 1) AWS 2) Google Cloud Platforms 3) Capistrano 4) Mina 5) Nginx 6) Passenger Phusion 7) Puma 7) Unicorn - $90/hr $90 hourly
Stefano M.
- 5.0
- (2 jobs)
Verona, VRRuby
Ruby on RailsVue.jsExpressJSReactNode.jsShopifyGolangAPIJavaScriptSpreeReact NativePythonFlutterTechnical Project ManagementNice to meet you! I am a CTO as a Service and entrepreneur from Italy. I started my development career in 2006 and since then I've worked with many interesting technologies, such Node, Ruby, Python and Go. As a CTO as a service, I can help your Company in a wide range of manners: - Early project stage: Helping the project owner with a strategy Defining the product roadmap (short and long term) Team hiring and training Data analysis Database design Defining application architecture Designing infrastructure architecture Choosing the right programming language and technical stack Building a PoC project Project setup and startup - During development: Team management (or your offshore team) Tasks estimation Tasks prioritization Applying agile practices Code quality review Quality assurance and testing processes Choosing a scaling strategy Choosing when and how to refactor the code Minimizing the technical debt - Project release: Assuring the quality of the final product Writing technical documentation Short and long term maintenance strategy Planning the quality assurance and testing processes Choosing a scaling strategy Defining the optimization strategy Choosing when and how to refactor the code During last 15+ years, I built every kind of web application, from monoliths to micro services to IoT related boards to every kind of client's ideas. I have dealt with: - platforms that optimize working flows - ecommerce (Spree) - quoting applications - employees evaluation and training - IoT dashboards - booking engines - mobile applications - business intelligence dashboards - ticketing systems - digital platforms for link building and digital pr - elearning tools - digital payments Currently, I'm helping clients all over the world to startup their challenging projects. Why trusting me? Because I'm a developer first, a highly skilled backend CTO and an entrepreneur. Hire me for your next big project. Stefano Mancini - $57/hr $57 hourly
Christopher B.
- 5.0
- (5 jobs)
Rotterdam, NetherlandsRuby
Mobile App DevelopmentReact NativeObjective-CBackbone.jsReactRuby on RailsLaravelNode.jsMy professional life has been deeply involved with the IoT since the inception of the web and I spend greater part of my half life working on web and mobile app development to help tech startups & growth companies increase growth & profits by improving exception and performance. If you're looking for an honest web developer to create something that engages your audience, generates leads and makes your job easier, I'm your guy! My technical specialties are: - HTML5, CSS3/SASS/LESS/Stylus - React, Vue, Angular, Backbone, Ember - React Native, Expo, ExpoKit, Flutter - Redux, Redux-saga, thunk, Mobx, Apollo/GraphQL - Contentful CMS, Netlfiy CMS - Node, Express, Ruby on Rails, Django, Flask - AWS, Digital Ocean, Heroku, GCP - Objective-C, Swift, Cocoapods, Java, Native SDKs - Jest, Enzyme, Mocha, Chai, Jasmine - MySQL, PostgreSQL, MongoDB, FirebaseDB, DynamoDB, AzureDB, CouchDB The NEXT STEP is to contact me so we can start the conversation about your project. We can schedule a call and work out the details in plain English. Don't worry about a big sales pitch. I'm not that guy. The goal is to find out if we're a good fit. If we decide to move forward, you can look forward to an honest working relationship that will help your business grow. Sound fair? To get the conversation started, click the "Hire Now" link (or fill out the form) on the top right corner of this page.
- $50/hr $50 hourly
Ali A.
- 5.0
- (10 jobs)
Lahore, PBRuby
RSpecWeb Services DevelopmentAPIDatabase DesignRuby on RailsPostgreSQLAmazon Web ServicesMySQLWeb DevelopmentJavaScriptHTMLAngularJSI've studied computer science. I have an experience of Web Development with the flavor of HTML, CSS, Bootstrap, JavaScript and other web development tools. I really enjoy this fact that thousands of users use applications that are developed by me. The ultimate dream is that one-day thousands will grow into millions or billions. I HAVE A DREAM! Overall if summarized my experience that would be exploring, organizing information, problem-solving and implementation. Languages are essential for expressing your programming skills overall. From EXPLORING attribute I have worked around lots of different languages. 1) Ruby 2) Typescript 3) Javascript 4) Python ( a new sensation I always wanted to explore Erlang but then I found this beauty. Python leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.) 5) PHP In assistance to above languages below frameworks come into play, 1) Ruby on Rails 2) Laravel 3) Django Databases are the main central storage of any web application. I got experience in both SQL and NoSQL 1) Postgres 2) Mysql 3) SQLite 4) MongoDB The game never ended on the server side for me. Frontend/public facing part of the web application has been also highly evolved. Everyone wants to use Single Page Applications - The SPAs. I got experience in the following 1) React JS/TS 2) Angular JS Testing and Test Driven Development(TDD) is also an essential thing for any solid applications. I can write automated tests in following 1) RSpec 2) Capybara Deployment is essential to distribute your application out in the wild. I got experience in the following tools and technologies 1) AWS 2) Google Cloud Platforms 3) Capistrano 4) Mina 5) Nginx 6) Passenger Phusion 7) Puma 7) Unicorn - $90/hr $90 hourly
Stefano M.
- 5.0
- (2 jobs)
Verona, VRRuby
Ruby on RailsVue.jsExpressJSReactNode.jsShopifyGolangAPIJavaScriptSpreeReact NativePythonFlutterTechnical Project ManagementNice to meet you! I am a CTO as a Service and entrepreneur from Italy. I started my development career in 2006 and since then I've worked with many interesting technologies, such Node, Ruby, Python and Go. As a CTO as a service, I can help your Company in a wide range of manners: - Early project stage: Helping the project owner with a strategy Defining the product roadmap (short and long term) Team hiring and training Data analysis Database design Defining application architecture Designing infrastructure architecture Choosing the right programming language and technical stack Building a PoC project Project setup and startup - During development: Team management (or your offshore team) Tasks estimation Tasks prioritization Applying agile practices Code quality review Quality assurance and testing processes Choosing a scaling strategy Choosing when and how to refactor the code Minimizing the technical debt - Project release: Assuring the quality of the final product Writing technical documentation Short and long term maintenance strategy Planning the quality assurance and testing processes Choosing a scaling strategy Defining the optimization strategy Choosing when and how to refactor the code During last 15+ years, I built every kind of web application, from monoliths to micro services to IoT related boards to every kind of client's ideas. I have dealt with: - platforms that optimize working flows - ecommerce (Spree) - quoting applications - employees evaluation and training - IoT dashboards - booking engines - mobile applications - business intelligence dashboards - ticketing systems - digital platforms for link building and digital pr - elearning tools - digital payments Currently, I'm helping clients all over the world to startup their challenging projects. Why trusting me? Because I'm a developer first, a highly skilled backend CTO and an entrepreneur. Hire me for your next big project. Stefano Mancini - $57/hr $57 hourly
Christopher B.
- 5.0
- (5 jobs)
Rotterdam, NetherlandsRuby
Mobile App DevelopmentReact NativeObjective-CBackbone.jsReactRuby on RailsLaravelNode.jsMy professional life has been deeply involved with the IoT since the inception of the web and I spend greater part of my half life working on web and mobile app development to help tech startups & growth companies increase growth & profits by improving exception and performance. If you're looking for an honest web developer to create something that engages your audience, generates leads and makes your job easier, I'm your guy! My technical specialties are: - HTML5, CSS3/SASS/LESS/Stylus - React, Vue, Angular, Backbone, Ember - React Native, Expo, ExpoKit, Flutter - Redux, Redux-saga, thunk, Mobx, Apollo/GraphQL - Contentful CMS, Netlfiy CMS - Node, Express, Ruby on Rails, Django, Flask - AWS, Digital Ocean, Heroku, GCP - Objective-C, Swift, Cocoapods, Java, Native SDKs - Jest, Enzyme, Mocha, Chai, Jasmine - MySQL, PostgreSQL, MongoDB, FirebaseDB, DynamoDB, AzureDB, CouchDB The NEXT STEP is to contact me so we can start the conversation about your project. We can schedule a call and work out the details in plain English. Don't worry about a big sales pitch. I'm not that guy. The goal is to find out if we're a good fit. If we decide to move forward, you can look forward to an honest working relationship that will help your business grow. Sound fair? To get the conversation started, click the "Hire Now" link (or fill out the form) on the top right corner of this page. - $75/hr $75 hourly
Randall B.
- 5.0
- (39 jobs)
Phoenix, AZRuby
AWS DevelopmentAPIQuery OptimizationDevOpsGitData ScrapingPostgreSQLWeb DevelopmentRustJavaScriptReactDockerKubernetesRuby on Rails6 years of Ruby on Rails fullstack (front-end, back-end and deployment) experience. 6 years deploying on the cloud (AWS, Azure, Digital Ocean, Heroku) 2 years Rust experience. Certified Kubernetes Administrator (CKA) Hashicorp Certified - Terraform Associate 003 I'm 100% committed to achieve success in your web applications with the results to prove it. Previous project work includes: โ Setting up 1-to-1 voice conferences using Twilio API โ Custom 2 factor authentication implementation โ Uploading and storing data on S3 and B2 buckets โ Automated web crawling to monitor new legislation โ Custom cron jobs on Linux servers for backup and maintenance tasks โ Solving "impossible" problems with custom Ruby gem and Rails patches โ Mass marketing sms campaigns using Twilio API โ Complex custom subscription implementation with Stripe API Technology I work with: โ Ruby on Rails (RoR). Rails 4, 5, 6, 7. โ Hotwire/Turbo โ RSpec/Capybara/Selenium for unit testing and feature testing โ PostgresDB, Mysql โ Heroku, Digital Ocean, AWS EC2 servers โ Heroku staging apps for continuous integration (CI/CD) โ Twilio API, Stripe API โ Google/Facebook/LinkedIn OAuth โ Capistrano, Docker+Kubernetes for deployment โ Wordpress, Shopify โ HTM5L/CSS3 โ JavaScript/AJAX/JQuery/JSON โ ReactJs/Nodejs/Typescript โ Web Scraping โ Linux BASH scripting โ Git, GitHub, Bitbucket, โ Webhooks โ Performance enhancement via algorithm and query optimization I understand the importance of test driven development to ensure a product that is understandable and maintainable for future developers to work on. More time put in up front means far less costs down the road. Fluent in English. Born and raised in the USA. - $60/hr $60 hourly
Abdulla M.
- 5.0
- (7 jobs)
Alexandria, ALEXANDRIARuby
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Ihor P.
- 5.0
- (1 job)
Vishgorod, KYIVRuby
Ruby on RailsHTMLI'm experieced in: * Ruby on Rails 4/5 * PostgreSQL * HTML5 / CSS3 / HAML / Bootstrap 3|4 / JavaScript / jQuery / AJAX * TDD/BDD RSpec * RESTful API * Attention to details. * Code Review * Refactoring / Debugging * Git * OS: Ubuntu / MacOS Client satisfaction and quality work are my top priorities! - $80/hr $80 hourly
Mosab M.
- 5.0
- (7 jobs)
Alexandria, ALEXANDRIARuby
ReactSoftware ArchitectureDatabase DesignWordPressRuby on RailsNode.jsSoftware ConsultationAutomated TestingSoftware DevelopmentSoftware TestingTypeScriptReduxJavaScriptWeb DevelopmentTest-Driven DevelopmentPHPMosab is a passionate Senior Software Engineer with more than 4 years of hands on experience building scalable web applications and services. He has a strong interest in building products that impact quality of life and loves working with cutting-edge technologies. Had a bachelor degree in Computer and Systems Engineering from Alexandria University A strong believer in the power of positive thinking pushed me for success to deliver more than 15 projects in the Middle East, Canada and USA. Passionate with being updated with the best practices used in Web App Development and Management. Working mainly to turn each challenge into a great opportunity. Caring for details and precise factors made me a professional master of the following: - System design and architecture - App performance - Code quality - Automated testing Skills/Interests: JavaScript, React, TypeScript, Express, Node, Redux, Webpack/Babel, graphQL, Ruby, Ruby-on-Rails, Java, Git, SQL, PostgreSQL, TDD, jest No matter how hard the matter was, the real happiness started from the moment the Customer's feedback shows the high satisfaction. No task or issue is impossible under a management process set specially to fulfill the beyond needs. Time is the main core of accuracy influencing the path and consequences as well. Seek to influence, not just apply. - $45/hr $45 hourly
Umar M.
- 4.9
- (11 jobs)
Lahore, PUNJABRuby
Ionic FrameworkReduxData ScrapingRuby on RailsVue.jsFlutterElectronAzure DevOpsNode.jsReactJavaScriptPython๐ 7+ Years of Experience. ๐ All Projects Completed with 5-start ๐ ๐๐๐๐๐๐๐ค ๐ 100% Client Recommendation I am a lead full-stack developer with 7 years of professional experience in SAAS applications. Passionate about working on modern applications using OpenAI to build products of high-quality user experience and great performance. I keep updated with the latest technologies and trends and have been enthusiastic about developing web and mobile apps. I've worked for startups, small and medium-sized businesses, and big companies. I enjoy working with a team but also like working alone to make great products. My main focus is on building lasting business connections and offering the best solutions with honesty and integrity as my guiding principles. Technologies that I work with include, ๐๐ฎ๐ญ ๐๐ซ๐ ๐ง๐จ๐ญ ๐ฅ๐ข๐ฆ๐ข๐ญ๐๐ ๐ญ๐จ, โญ ๐ ๐ซ๐จ๐ง๐ญ ๐๐ง๐ โค JavaScript, TypeScript, Jquery, ES6 โค React JS, Redux, Next JS and React Native โค Bootstrap and tailwind css โค Material UI, Semantic UI โค WordPress+ CMS Development โญ ๐๐๐๐ค ๐๐ง๐ โค Python, Django, DRF and Flask โค Node js, Express js, Strapi and Koa โค Automation, unit testing and scripting โค Scrapy, Selenium and bs4 โค API and Microservices Architecture โค Knowledge of back-end development best practices. โญ ๐๐๐ซ๐ฏ๐๐ซ๐ฌ, ๐๐๐ฏ๐๐ฉ๐ฌ โค Docker โค uWSGI, Nginx, Gunicorn, and Firewalls โค AWS, DO, Heroku, GCE โค Google Cloud Run, Google Cloud Functions, Firebase Functions โญ ๐๐๐ญ๐๐๐๐ฌ๐ โค PostgreSQL, MySQL, and MongoDB โค Firebase\Firestore, Firebase Storage โญ ๐๐จ๐ฎ๐ซ๐๐ ๐๐จ๐๐ ๐๐จ๐ง๐ญ๐ซ๐จ๐ฅ โค Github, Bitbucket, and Gitlab โญ ๐๐ซ๐ ๐ฉ๐๐ซ๐ญ๐ฒ ๐๐๐ ๐๐ง๐ ๐๐ก๐๐ญ๐๐จ๐ญ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ โค Extensive knowledge of ChatBots Development โค Writing fulfilment for the ChatBots using Node.js โค LLM โค Twilio API โค Payment Gateways Integration using Stripe, Square, Authorize.net, Ibanera and PayPal โค Chat GPT API Want to work together? Iโd love to hear from you. - $80/hr $80 hourly
Tami M.
- 5.0
- (25 jobs)
Tooele, UTRuby
SwiftiOS DevelopmentInternet of ThingsServerless ComputingMapboxElementorNext.jsLanding PageWeb DesignRuby on RailsJavaScriptWordPressReactHello! I'm Tami Mitchell, a seasoned freelance software engineer with over a decade of experience, specializing in Ruby on Rails and modern JavaScript frameworks like React and Next.js. I thrive in dynamic environments, delivering high-quality, scalable, and performance-optimized web solutions. Strengths and Skills: Expertise in Web Development: Proficient in Ruby on Rails, React, Mapbox, AWS, and serverless technologies. Project Leadership: Successfully led website rebuilds for notable clients such as clockshark.com and safetychain.com, migrating to high-performance serverless stacks. Collaborative Team Player: Experienced in Agile/Scrum environments, ensuring smooth workflows and effective communication across project teams. Problem Solving: Exceptional at diagnosing and solving complex technical issues, ensuring robust and maintainable web applications. Accomplishments: Rebelle Rally Performance Tracker: Developed an innovative off-road asset tracking system using Arduino and AWS IoT, enhancing real-time data visualization with React and Mapbox. Roadpass Digital Enhancement: Played a key role in modernizing the Campendium.com platform, implementing cross-brand authentication and improving site performance and scalability. Education and Training: A solid foundation in technical education, continuously updated with the latest web technologies and best practices through ongoing professional development. I am eager to bring my technical acumen and problem-solving skills to your next project, ensuring it exceeds expectations while pushing the boundaries of technology. Let's create something great together! Feel free to reach out for a detailed discussion on how I can help your business thrive! - $35/hr $35 hourly
Nemanja K.
- 5.0
- (8 jobs)
Kragujevac, CENTRAL SERBIARuby
Angular 6ReactDevOpsMySQL ProgrammingMongoDBPostgreSQLRuby on RailsDjangoPythonI'm experienced and skilled developer with vast experience in web development. I actually enjoy taking something new and complex, investigating it, breaking it down, simplifying it and acquiring a good understanding of it. I'm a dedicated, focused and highly motivated individual and a lover of clean organized code and remote work. My experience primarily covers the following technologies and frameworks. - Ruby, Ruby on Rails, Sinatra - Python, Django, Flask, Selenium, Data Science using Scikit, Pandas, Numpy, IPython, Tensorflow etc - Node, React, Angular, Vue - MySQL, PostgreSQL, Mongo, Elasticsearch, Apache Spark, AWS RDS, AWS Redshift, Redis - Linux, Ubuntu, Centos, Redhat - Jira, Basecamp, Trello - AWS Lambda, Cognito , SQS, SNS, S3, Ec2, CloudFront, ETL etc - $160/hr $160 hourly
Danny H.
- 4.5
- (5 jobs)
Dubai, DURuby
Process EngineeringAgile Software DevelopmentDockerGoogle Cloud PlatformKubernetesGolangTypeScriptElixirJavaScriptWith over 20 years immersed in the realm of technology, I've cultivated a rich expertise that spans across a broad spectrum of roles, industries, and technologies. From co-founding and spearheading the tech direction of Quiqup Delivery โ a tech-enabled last-mile logistics company โ to leading innovative projects at institutions like Technophobia (now part of Capita) and the Ministry of Justice UK, my journey is punctuated by transformative tech solutions and dynamic leadership. Technical Proficiency: My core strength lies in system design/architecture, platform engineering, and cloud solutions, with a particular affinity for Kubernetes. I pride myself on being a polyglot developer proficient in a gamut of languages including Golang, TypeScript, Elixir, Ruby, Python, and Swift, among others. I'm a strong advocate of domain-driven design and cherish the elegance of well-crafted design patterns. I also understand what it takes to build a hyper productive development team, and to enable their success. Value Proposition: ๐ For Startups: If you're embarking on your startup journey, I'm here to ensure you launch with a robust technological backbone. I'll help you navigate the maze of product/service development while preemptively addressing potential roadblocks. ๐ฌ For Established Businesses: When you find yourself at the crossroads of technological evolution, allow me to guide you. We'll explore how technology can not just serve but delight your customers. ๐ช Team Optimization: Your product or development team is a goldmine of potential. I can streamline the journey from idea to execution, ensuring optimal performance from both a technological and team perspective. Why Freelance? My motivation stems from a simple principle: preventing tech missteps that could derail dreams. I've witnessed countless companies falter due to tech oversights, and my mission is to prevent that. Freelancing as a fractional CTO allows me to extend my expertise to diverse businesses, ensuring they leverage technology effectively. Personal Motto: At the heart of it all, my passion is hinged on the elegant application of technology. I'm driven by the promise of solving intricate challenges, using technology as a lever to augment human potential, helping teams to "work smarter, not harder." - $40/hr $40 hourly
Volodymyr K.
- 5.0
- (11 jobs)
Lviv, LVIV OBLASTRuby
API DevelopmentApp DevelopmentAWS ApplicationCloud ArchitectureMicrosoft AzureSaaSMobile AppC#PHP.NET CoreASP.NETWeb ApplicationWordPressRuby on RailsIf you need a custom mobile or web application, invite me for an interview! | Completed 7k+ hours | 8 years experience ๐What's my benefit? - 8+ years of web and mobile custom software development - Business thinking & experience with challenging projects - Tech and project manager background and research - Successful launch of SaaS apps - MS Degree in Computer Science - I do care about your final business result โ What can I help you with? - Architecting and developing new products from the ground up - Rapidly developing MVP's and prototypes - Re-engineering and Innovation of existing products - Designing and managing cloud based systems - Transforming technology teams and processes to improve efficiency, timeliness, and quality - Technology strategy and roadmaps - Technology due diligence and assessments - Security and risk assessments - Leading and building distributed product development teams ๐ช๐๐๐๐๐๐ - Web development - Mobile development - MVP development - Software solutions - Innovation - Analytical thinking - Brainstorming - Communication & Collaboration ๐ป๐๐๐๐๐ - Microsoft Azure Services (App Services / Blob storages / Virtual Machines / Notification hubs/ Webjobs - Visual Studio / Visual Studio Code / Xamarin Studio / Visual Studio for Mac Mercurial / TFS / Git - Bitbucket / GitHub / Gitlab / JIRA - NUnit / MSTest / Moq - Hyper-V / VMWare Workstation - Fiddler / Postman - Docker / Kubernetes If you need a custom mobile or web application, invite me for an interview! - $125/hr $125 hourly
Carl S.
- 5.0
- (14 jobs)
Farmington Hills, MIRuby
APIPostgreSQLMySQLCSSManagement ConsultingHTML5SQLCSS 3RESTful APIJavaScriptRuby on RailsAs an Upwork-recognized Top Talent with a 100% client satisfaction rating, I pride myself on delivering top-quality web application development services. With 20 years of experience under my belt, I can efficiently engineer projects of all types, ensuring you receive exceptional value and a faster time to market. My approach involves diving deep into the core of each project, understanding your unique goals and requirements. This way, I can deliver tailor-made solutions that exceed your expectations. Skills & Expertise: โข Ruby / Ruby on Rails โข SQL (MS SQL, PostgreSQL, MySQL) โข API Integrations (SOAP, REST, GraphQL) โข Custom API Development โข RSpec โข HTML5 โข CSS3 & SASS โข JavaScript โข Linux Web Servers โข IIS โข Git โข Agile Project Management โข Process Improvement โข Release Management โข Documentation Let's Elevate Your Project Together! I'm eager to help you bring your vision to life. Contact me today for a free, no-obligation phone consultation. Together, we can take your project to new heights! - $60/hr $60 hourly
Emilio C.
- 5.0
- (2 jobs)
Mexico City, CDMXRuby
Ruby On Rails Software developer, with experience on ReactJS, JavaScript, and PHP Symfony framework. - $35/hr $35 hourly
Sheharyar A.
- 4.9
- (52 jobs)
Sheikhupura, PUNJABRuby
TypeScriptMongoDBNestJSGraphQLAPI IntegrationRuby on RailsHerokuRSpecGitExpressJSNode.jsNext.jsReactJavaScript๐ Crafting top-tier websites for 10+ years ๐ฃ๏ธ Providing seamless English communication ๐ 9000+ hours billed, delivering enterprise-grade solutions ๐ค Trusted by Fortune 500 companies for complex projects I am a dedicated and forward-thinking Full Stack Developer with an impressive 10+ years of experience, specializing in crafting high-quality, feature-rich websites. My expertise lies in developing responsive and cross-browser-compatible websites with robust back-end functionality. I excel both individually and in remote collaborations, showcasing my adaptability and strong teamwork skills. My portfolio speaks to my capabilities: ๐ผ Skills & Expertise: โ Proficient in Ruby on Rails, JavaScript, and TypeScript. โ Mastery of client-side development using React, Bootstrap, Tailwind CSS. โ Proficient in server-side development with Ruby on Rails. โ Crafting engaging UI using HTML, CSS/SCSS/SASS, and Material UI. โ Databases: MongoDB, PostgreSQL, Firebase, MySQL, and SQLite. โ Commanding use of package managers: NPM, Bower, and Yarn Package. โ Adept with Git for version control (GitHub, BitBucket, GitLab, Azure). โ Skilled in task management tools: Jira, Zendesk, Trello, Pivotal Tracker, and Vivify. โ Experienced in cloud hosting via Heroku and Amazon servers. โ Familiarity with server-side deployment (Apache, Nginx, Unicorn, Puma, etc.). โ Proficient in scraping and parsing tasks for data acquisition โ Champion of Test-Driven Development (TDD) using RSpec, and Jest. These skills collectively enable me to provide comprehensive and effective solutions for your projects. If you'd like to discuss how I can contribute to your specific needs, feel free to reach out. - $42/hr $42 hourly
Slava M.
- 5.0
- (24 jobs)
Bishkek, BISHKEKRuby
ReactNode.jsAPITailwind CSSJavaScriptShopifyHTML5CSS 3PSD to HTMLShopify TemplatesShopify ThemeLiquidShopify PlusI'll solve any problem you have, whether it's a theme, a custom storefront, or an embedded application. Do you use Shopify Plus? Great! I'm well-versed in its features and happy to work with this platform. ๐ Clients seek my expertise to craft a resilient user experience for their buyers, focusing on speed, scalability, and the power of Shopify. I offer fast, modern themes with Online Store 2.0 features, custom storefronts using Hydrogen for a high level of creative control, and embedded Remix apps that solve merchant problems effectively. If you have questions or an exciting project in mind, let's make your Shopify store stand out! Contact me anytime, and let's start making this world a little better. Best regards, Slava - $60/hr $60 hourly
Manish K.
- 5.0
- (16 jobs)
Karachi, SDRuby
AppSheetMake.comZapierAutomationRESTful APIJavaScriptSQLMySQLPHPPythonPostgreSQLI am an experienced polyglot engineer with a strong focus on agile development and user-centric design. Over the years, I have built numerous turnkey solutions with Python, PHP, Ruby and Node, while also developing expertise in AI systems, MCP Server architecture, and advanced automation workflows. I am well versed in cloud platforms such as AWS and DigitalOcean, with a particular talent for implementing intelligent automation that reduces operational complexity. In a world full of overly complex solutions, I strive for simplicity in my approach, leveraging AI tools and automation to create elegant, efficient systems. I am currently seeking work engagements where I can help clients grow by applying my backend skillset and automation expertise to increase operational efficiency and simplify complex business processes within a cloud-native environment. - $38/hr $38 hourly
Josรฉ M.
- 5.0
- (1 job)
Caracas, CAPITAL DISTRICTRuby
FirebaseReact NativeHerokuCSS 3ReactNode.jsAngularPythonMongoDBFull stack Engineer focusing on the frontend and backend with over 5 years experience. Proficient working with HTML, CSS, Javascript, and the latest frameworks like Backbone.js, React.js, Angular, and Node.js/Express.js. Focusing on standards-based, modern, responsive web design practices using HTML5, CSS3, and SASS/LESS. I have professional experience in backend with Python and Django, Flask, PHP and Laravel and Ruby on Rails. Database Managment Expert with MySQL, PostgreSQL, MongoDB and Sqlite. My latest experience includes building out a marketplace application for healthcare professionals using Backbone, Django, and MongoDB, enhancements and maintenance on a web-based trading platform used by thousands of people using Ext.js, work on user signup and account management applications running Backbone and Marionette, and architecting and prototyping new versions of those applications using React and custom frameworks. Also I have huge skill in SEO and google supported platforms such as Firebase. I always aim to deliver TOP quality software and I will always bring outstanding solid results to any projects I'm part of. - $40/hr $40 hourly
Ahmad J.
- 5.0
- (7 jobs)
Laurel, MDRuby
Cisco Certified Entry Networking TechnicianElectronic WorkbenchDigital ElectronicsElectronic Circuit DesignComputer NetworkControl EngineeringCircuit DesignFront-End Development FrameworkPHPAPI TestingCross-Device CompatibilityLaravelSpring Boot.NET CoreVue.jsReduxJavaScriptNode.jsAPI IntegrationReactFirebase Cloud FirestoreI am a skilled ๐๐๐น๐น ๐ฆ๐๐ฎ๐ฐ๐ธ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐ฒ๐ฟ with over ๐ญ๐ฌ ๐๐ฒ๐ฎ๐ฟ๐ of experience in developing high-performance web applications. My expertise lies in leveraging cutting-edge technologies such as ๐ ๐๐ฅ๐ก, ๐ ๐๐๐ก, ๐ฅ๐ฒ๐ฎ๐ฐ๐, ๐๐ป๐ด๐๐น๐ฎ๐ฟ, ๐ฉ๐๐ฒ.๐ท๐, ๐ฃ๐๐ฃ, and ๐๐ฎ๐ฟ๐ฎ๐๐ฒ๐น as well ๐ฃ๐๐๐ต๐ผ๐ป, ๐ฅ๐๐ฏ๐ ๐ผ๐ป ๐ฅ๐ฎ๐ถ๐น๐, ๐๐ฎ๐๐ฎ ๐ฆ๐ฝ๐ฟ๐ถ๐ป๐ด๐ฏ๐ผ๐ผ๐, ๐#,.๐ก๐ฒ๐ to craft scalable and secure solutions from Concept to Deployment. I specialize in working with modern tech stacks and delivering robust web applications tailored to meet business needs. ๐น ๐๐ฟ๐ผ๐ป๐-๐๐ป๐ฑ ๐ง๐ฒ๐ฐ๐ต๐ป๐ผ๐น๐ผ๐ด๐ถ๐ฒ๐: React.js | Angular | Vue.js | JavaScript | HTML5 | CSS3 | Bootstrap ๐น ๐๐ฎ๐ฐ๐ธ-๐๐ป๐ฑ ๐ง๐ฒ๐ฐ๐ต๐ป๐ผ๐น๐ผ๐ด๐ถ๐ฒ๐: Node.js | Express.js | PHP | Laravel | Python + Django | Ruby on Rails | Java + Springboot | C# + .Net | SQL ๐น ๐๐ฎ๐๐ฎ๐ฏ๐ฎ๐๐ฒ๐: MongoDB | MySQL | PostgreSQL | SQL Server ๐น ๐๐น๐ผ๐๐ฑ ๐ฆ๐ฒ๐ฟ๐๐ถ๐ฐ๐ฒ๐: AWS | Azure | Google Cloud | Docker | Kubernetes | CI/CD Pipelines ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ ๐ฆ๐ธ๐ถ๐น๐น๐ โ๏ธ ๐ ๐๐ฅ๐ก ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Full-stack development using MERN stack - Building dynamic UIs with React.js - Restful API development with Node.js and Express.js โ๏ธ ๐ ๐๐๐ก ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Building scalable applications using Angular - Using MongoDB for efficient data storage - Real-time features with Socket.io โ๏ธ๐๐ฎ๐๐ฎ + ๐ฆ๐ฝ๐ฟ๐ถ๐ป๐ด๐ฏ๐ผ๐ผ๐ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Robust backend services using Java and Springboot - Secure API integration and microservices architecture โ๏ธ๐# + .๐ก๐๐ง ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Enterprise-level applications using C# and .NET Core - Custom ASP.NET solutions and services โ๏ธ๐ฃ๐๐๐ต๐ผ๐ป + ๐๐ท๐ฎ๐ป๐ด๐ผ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Developing efficient and scalable applications using Python and Django - API integrations, ORM solutions, and data management โ๏ธ ๐ฃ๐๐ฃ + ๐๐ฎ๐ฟ๐ฎ๐๐ฒ๐น ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Developing custom web applications with PHP and Laravel - Building and integrating RESTful APIs - Laravel-based CMS and eCommerce solutions โ๏ธ๐ฅ๐๐ฏ๐ ๐ผ๐ป ๐ฅ๐ฎ๐ถ๐น๐ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ - Crafting powerful, secure applications using Ruby and Rails - Full-stack solutions with Ruby backend and modern front-end integrations โ๏ธ ๐ฆ๐ค๐ ๐ฎ๐ป๐ฑ ๐๐ฎ๐๐ฎ๐ฏ๐ฎ๐๐ฒ ๐๐ ๐ฝ๐ฒ๐ฟ๐๐ถ๐๐ฒ - Efficient SQL database design and query optimization - Working with MySQL, PostgreSQL, and SQL Server โ๏ธ ๐๐น๐ผ๐๐ฑ ๐ฆ๐ฒ๐ฟ๐๐ถ๐ฐ๐ฒ๐ & ๐๐ฒ๐๐ข๐ฝ๐ - Cloud application deployment on AWS, Azure, and Google Cloud - Containerization with Docker and orchestration with Kubernetes - - - - - - - - ๐๐ฒ๐๐๐ผ๐ฟ๐ฑ๐ ๐ง๐ผ ๐๐ถ๐ป๐ฑ ๐ ๐ฒ: Full Stack Developer | MERN | MEAN | React | Node | Angular | Vue.js | SQL | Java + Springboot | Python + Django | C# + .Net | PHP | Laravel | Ruby on Rails | Cloud Solutions | AWS | Azure | Docker | Kubernetes | API Development | RESTful Services | Frontend | Backend | Database Management | CI/CD | Web Application Development | Scalability | Performance Optimization | Security | Real-Time Features | Microservices | DevOps | Cloud Services | Web Security | E-commerce Solutions | Custom CMS | API Integration | Customization | Deployment | Maintenance | Support | Performance Tuning Single Page Application | Database | Design | Development | Customization | Maintenance | Support | E-commerce | SEO | Laravel Nova | CakePHP | CodeIgniter | Drupal | Joomla | Digital Experiences | User Interfaces | Scalable Applications | Flexibility | Scalability | Efficiency | Real-time Features | State Management | Deployment | Containerization | Orchestration | Cloud Platforms | High Performance | Optimization | Bug Fixes | Issue Resolution | PHP Scripting | Theme Customization | Extension Development | Module Development | Component Development | UI/UX Design | Cloud Solutions | Architect | Performance Tuning | SEO Audits | Security Audits | Backend Development | Frontend Development | CI/CD | Full Stack Developer | Laravel Expert | React Developer | Vue.js Specialist | Yii2 Developer | Codeigniter Developer | Backend Development | Frontend Development | Database Design | DevOps | Cloud Services | CI/CD | Web Application Security | PHP Expert | E-commerce Specialist | API Integration | Laravel Nova Expert | CodeIgniter Specialist | Joomla Developer | Magento Developer | Laravel Migration Specialist | PHP Framework Specialist | Full Stack PHP Developer. - $55/hr $55 hourly
Sergey T.
- 5.0
- (22 jobs)
Belgrade, SERuby
Bash ProgrammingDevOpsJenkinsLinuxMySQLPostgreSQLProgress ChefAnsiblePython20+ years experience administering Linux systems, have a strong expertise in Bash, Python, and C++ development. Mostly interested in finding and eliminating bottlenecks in system software, hardware, and people communications. I believe in DevOps ideals and advocate best SRE practices. - $70/hr $70 hourly
Adem D.
- 5.0
- (5 jobs)
Hadzici, BIHRuby
ReactRSpecMachine LearningRuby on RailsDockerRedisAmazon Web ServicesPostgreSQLJenkinsJavaScriptPythonI am full-stack developer, with 5 years of professional experience. I mainly use Ruby and Python for server side code and React on the front-end. I am comfortable with AWS and Heroku, where I hosted most of my Upwork projects. Recently, I was focusing on Machine learning and AI, specifically GPT-3, where I also successfully complete a couple Upwork contracts. I love clean and DRY code and always try to use best programming practices. I love to be challenged, use new technologies, embrace them and try to learn something new each day. - $40/hr $40 hourly
Muhammad A.
- 5.0
- (77 jobs)
Oulu, NORTHERN OSTROBOTHNIARuby
Customer Relationship ManagementFacebook DevelopmentRESTful APIAWS LambdaPythonGoogle Apps ScriptAPI DevelopmentAPILaravelAPI IntegrationJupyter NotebookDatabase ArchitectureJSONI am a Computer Engineer graduate. I am a Python developer for the last 4+ years and done hundreds of projects. Some of my projects are listed below: 1- Chatbots using chatbot 2- Publisher- Subscriber protocols. 3- Server-Client Encryption. 4- Steganography 5- Linux Bash Operations 6- Arduino Home Automation 7- eBay API integration 8- China brands API integration 9- Google Maps API integration 10- Twitter/ Reddit API integration 11- Youtube Data V3 Integrations 12- Different types of Queues 13- Deployments on cloud like aws, lambda, S3 14- Zendesk API 15- Microsoft Graph API - $60/hr $60 hourly
Austen B.
- 5.0
- (11 jobs)
New Lebanon, OHRuby
RESTful APIShopifyLiquidnpmBootstrapGitSemantic UIReduxNext.jsSCSSJavaScriptHTMLReactCSSAs a devoted United States Air Force veteran, I am unwavering in my commitment to upholding the core values of integrity, a meticulous attention to detail, and an unrelenting pursuit of excellence. For me, programming is not simply a career; it is a way of life that consistently challenges both my personal and professional growth. What started with coding my first "hello world" in the console has blossomed into an enduring and profound passion. My proficiency spans a wide array of cutting-edge technologies, encompassing JavaScript, React, Mapbox GL JS, Next, Redux, Node, Nest, and more. I continuously expand my skill set, exploring emerging technologies that both stimulate my creativity and propel my professional development. While my primary focus has centered on front-end development, I am equally adept in back-end development, in crafting RESTful APIs, and skilled in managing both SQL and NoSQL databases. In addition to the aforementioned stack, I have familiarity with Ruby on Rails, and experience with Shopify theme development. Iโve also been dabbling in Solidity, web3, and the exhilarating world of blockchain development. I've had the privilege of supporting numerous clients in building successful eCommerce and Shopify stores. However, what truly fills me with pride is the impactful data visualization work I've accomplished with my most long standing client, True Elements. True Elements is a one of a kind application that, in their own words, "fuses expertise in water science, engineering, artificial intelligence, technology, management, network science, military intelligence, government, business development, and marketing and communications to create cutting-edge Water Intelligence products and the operational proficiency to deliver them in the most user-friendly, transparent, and efficient manner possible." They've forged partnerships with multiple tech giants, NGOs, and government organizations, all while boasting multiple pending patents. Beyond my professional endeavors, my greatest passion lies in travel. Embracing the Digital Nomad lifestyle, I currently call South East Asia my home. This experience showcases my adaptability, openness to new experiences, and my capacity to work effectively and independently across multiple time zones. My ultimate satisfaction is derived from not merely meeting, but consistently surpassing your expectations. I maintain an ongoing competition with myself to ensure that the fruits of my labor continually elevate your projects to new heights. I eagerly anticipate the opportunity to connect with you and become an invaluable, contributing member of your vision. - $35/hr $35 hourly
H Abdul B.
- 5.0
- (3 jobs)
Lahore, PUNJABRuby
Ruby on RailsjQueryReactData AnalysisDeep LearningData ScienceAJAXDatabasePostgreSQLSQLMySQLJavaScriptPythonI am a Certified Full Stack Ruby on Rails developer with 6 years of experience and a degree in computer science. I appreciate clean, beautiful codes & clear communication. I am experienced with building, maintaining, and scaling web projects using Ruby on Rails. I have done everything from the most basic CSS to setting up production servers. I have been exposed to different industries using various processes and technologies. SKILLS and KNOWLEDGE: - Expertise in developing, profiling, and debugging with Rails and Ruby - Experience in designing REST-APIs and profiling Rails applications. - Engineering experience with building scalable MVC, event-based, modular, API-driven software. - Strong knowledge of HTTP, REST, Redis, PostgreSQL, MySQL - In-depth knowledge and practice in TDD with Rspec. - Strong knowledge about popular gems such as Devise, Cancancan, Rolify, Paperclip, etc. - Git, Bitbucket, Github. - Front end HTML, JS, CSS ability. - Familiar with Jquery, CoffeeScript, Twitter Bootstrap. - Working knowledge in Google API, Facebook API, Stripe API, Paypal API. - Web administration experience in Linux/Windows base servers. SSH, Cpanel, Amazon Web Service - Working experience in Agile environment. I'm really open for discussion if your project will let me grow in one of the areas listed above. Best Abdul Basit - $43/hr $43 hourly
Nathan W.
- 5.0
- (8 jobs)
Allen, TXRuby
LinuxDatabaseDevOpsRESTful ArchitectureJavaScriptGitBootstrapShopifyPHPVue.jsRuby on RailsNode.jsMySQLHardworking, dedicated, and utmost concerned with client satisfaction. I wrote my first line of code at the age of 12, and I haven't stopped since. I like to work on long and devious projects that test my skills, and force me to get outside of my comfort zone. Additionally, I have a knack for learning new programming languages, frameworks, and libraries quickly. In my free time, I enhance my technical knowledge by learning new techniques, and strategies for solving complex problems effectively. I never stop learning new things! - $80/hr $80 hourly
Brian S.
- 5.0
- (3 jobs)
San Antonio, TXRuby
Backbone.jsRuby on RailsI have extensive experience developing Ruby on Rails applications. I previously have been an entrepreneur who took my company from an idea, to a side project, to a full time job, to being sold over the course of 6 years, so I'm very comfortable with companies in many different stages. - $65/hr $65 hourly
Eduard T.
- 5.0
- (2 jobs)
Krakow, LESSER POLAND VOIVODESHIPRuby
JestMobxFront-End DevelopmentTailwind CSSRuby on RailsPostgreSQLAJAXJavaScriptReactCSS 3HTML5SCSSI am a diligent developer with over four years of experience in web development, who transforms design concepts into user-friendly applications efficiently. I specialize in Front-End development, with my primary stack revolving around React, MobX, Tailwind CSS to craft responsive and visually appealing user interfaces, but I also possess the flexibility to contribute to Back-End projects. My core expertise is in: Front-End: โข Proficient in React.js (including React Hooks), JavaScript, React Router (or custom state-based routing), Tippy.js, Popper.js, React Datepicker, react-window, react-virtualized, and react-cool-virtual. โข MobX and mobx-state-tree for efficient state management. โข Tailwind CSS, Windi CSS, HTML5/CSS3, SCSS, and HTML5 Canvas for crafting stunning user interfaces. โข Well-versed in Webpack, Vite, Jest, Yarn/NPM, Babel, and ESLint โข Proficient in building RESTful API applications While my primary focus is Front-End, I also possess versatile knowledge in Back-End technologies: โข Ruby, Clojure, Java, and Kotlin โข Kafka โข PostgreSQL These technologies empower me to contribute to Back-End development tasks, broadening my skill set and enabling me to work on a variety of projects. Want to browse more talent?
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