Hire the best Java Developers in Pennsylvania

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$40 hourly
Oliver M.
- 5.0/5
- (14 jobs)
Hi, I'm Oliver, and I have spent the past 5 years building mobile and web applications for startups and small businesses. I can take your wireframes and transform them into a full-fledged app you can put before real users in just weeks. With my fully custom, user-friendly, designs and my quick, scalable backend architectures, I will make your visions a reality. I am a student of computer science at Colorado College and I spend my free time writing code. I specialize in native iOS development and full-stack web development with a broad range of skills across many different languages and frameworks. I love working with new technologies and tackling tricky problems! I am especially interested in developing open-source projects that can make a difference in the world. Let's talk about your project! Here are the skill sets I have: IOS DEVELOPMENT:- Swift SwiftUI Spotify SDK Google Admob Revenue Cat Firebase Mapkit Healthkit AVFoundation WEB DEVELOPMENT:- HTML Javascript CSS React Next js Node js jQuery tailwindcss Spotify API Prism Flask Stripe Sendgrid Next Auth Cloud: - Lambda Functions Elastic Beanstalk Eventbridge Firebase CouchDb MonogoDb CosmosDb Api: - Express Flask SQL Next js Web3: - Solidity Wagmi IPFS Sign-In With Ethereum

Java
Next.js
Full-Stack Development
Spotify
CSS
Web Application
HTML
Back-End Development
Apple Xcode
iOS Development
Swift
JavaScript
Python
React
Firebase
$50 hourly
Mitchell W.
- 5.0/5
- (8 jobs)
Experienced Software Engineer with over 6 years of work experience working for companies such as Northrop Grumman, Komatsu Mining Corporation, Erie Insurance, General Electric, and Wabtec US Rail. My work has included developing software automation technologies, full-stack web application development, data analysis, enterprise database/ content management, user interface development, embedded system development, artificial intelligence, integration/ validation testing and more. I have experience with languages such as VB.NET, ASP.NET, C#, React.js, C++, Python, Java, Junit, NI LabVIEW, Microsoft SQL, and other web programming languages/ frameworks. I have also done extensive work with GNNS + GIS systems and am experienced with Amazon Web Services.

Java
User Interface Design
Angular
SQL Programming
Artificial Intelligence
C++
Python Script
Software
LabVIEW
Python
Automation
$100 hourly
Robert K.
- 5.0/5
- (7 jobs)
I am a US-based technical architect and senior middleware engineer with over 15 years of experience specializing in enterprise cloud-based environments. Throughout my career, I’ve had the privilege of working with Fortune 100 companies in the e-commerce, retail industries, and information services and analytics where I’ve led and contributed to e-commerce development, systems integration, DevOps, middleware, data science, and Salesforce projects. Expertise: Middleware Platforms: Specialized in Dell Boomi and Mulesoft with extensive experience building and designing integrations for Salesforce CRM, Zuora, NetSuite, Workday, SAP Fieldglass, Active Directory, Concur, and OpenAir. API Development: Expert in building APIs using Flask and working with Python 3 to deliver scalable, high-performance solutions. DevOps & Performance: Skilled in configuration management tools such as SaltStack, Ansible, and Puppet, as well as performance diagnostics tools like JMeter and HP Performance Center. Proficient in CI/CD pipelines with Jenkins, Bamboo, and AWS CodeBuild. Cloud & AWS: Strong experience with AWS services such as SageMaker, ECS Fargate, EC2 with NVIDIA GPUs, S3, Glue, Redshift, Bedrock, CodeCommit, and CodeBuild, for scalable, high-performance cloud solutions. Programming Languages: Proficient in Groovy, Java, C++, Python, with extensive experience writing efficient and scalable code. WordPress: Experience in WordPress system administration and plugin development. AI & Machine Learning: Predictive Analytics: Hands-on experience in predictive analytics and building models using XGBoost, scikit-learn, and Python for tasks such as forecasting and customer behavior prediction. Deep Learning: Proficient in building neural networks using Keras and TensorFlow, with a focus on applying these models to real-world problems such as financial forecasting and product recommendation systems. Natural Language Processing: Expertise in utilizing Huggingface models like BERT and GPT for various NLP tasks, including sentiment analysis, text classification, and named entity recognition. FAISS & RAG Workflows: Skilled in using FAISS combined with RAG workflows to build efficient similarity search systems, enhancing data retrieval and decision-making processes across platforms. Salesforce Development: Extensive experience developing solutions in Salesforce, including creating custom integrations, automating business processes, and enhancing Salesforce’s functionality using Apex, Visualforce, and Lightning components. With a strong foundation in middleware technologies, cloud computing, AI/ML, and DevOps, I am well-equipped to deliver robust, scalable, and efficient solutions for your business needs. I’m passionate about building innovative systems to drive business success and look forward to collaborating with you on your next project.

Java
Magento
Amazon SageMaker
Oracle NetSuite
AWS Lambda
Talend Open Studio
NetSuite Development
PHP
ServiceNow
Dell Boomi
Mulesoft
Apache Groovy
System Administration
Salesforce
$35 hourly
Alexander M.
- 5.0/5
- (6 jobs)
As a Full Stack Engineer with a proven track record on Upwork, I bring a comprehensive skill set in front-end and back-end technologies, delivering high-quality web applications and innovative solutions. My experience spans across JavaScript/TypeScript, Python, React, Node.js, and AWS, showcasing my versatility and technical expertise. I take pride in my ability to translate complex project requirements into seamless, efficient digital solutions. My commitment to quality and client satisfaction is reflected in my Top Rated status and 100% job success score on Upwork. Let's collaborate to bring your vision to life with cutting-edge technology and professional excellence.

Java
MongoDB
Postman
Figma
Python
React Native
Jira
GitHub
Node.js
React
ExpressJS
Next.js
TypeScript
$70 hourly
Matthew T.
- 5.0/5
- (8 jobs)
I’m a seasoned software engineer with 10+ years of experience in building Spring Boot microservices and Angular-based micro frontends. I focus on creating scalable, high-performance applications while ensuring seamless integration with DevOps pipelines using GitLab, Jenkins, Docker, OpenShift, and Harness. My Expertise Includes: - Backend Development: Java/Kotlin, Spring Boot, REST APIs, Kafka for real-time data processing. - Frontend Development: Angular, TypeScript, HTML, and CSS for modular, responsive UIs. - Database Management: PostgreSQL, Oracle, Cassandra, and DynamoDB—optimizing data flow and reliability. - Testing & Code Quality: JUnit, Mockito, and Testcontainers, achieving 90%+ SonarQube coverage. - CI/CD & Infrastructure: Automating deployments and infrastructure scaling with cutting-edge DevOps tools.

Java
Unix Shell
Spring Boot
GitHub
Kotlin
Swagger
JUnit
SQL
Angular
Mockito
JavaScript
JetBrains IntelliJ IDEA
GitLab
PostgreSQL
Eclipse IDE
$140 hourly
Scott A.
- 4.9/5
- (8 jobs)
I have been working in LLM System development since the release of the ChatGPT API. Since then, I have been Head of AI at two different companies, completed numerous contracts, and started an AI Research company where we explore novel approaches and algorithms for LLM systems. I have built up a set of custom tools and solutions for many of the common problems, like hallucinations, scaling, reinforcement learning, RAG, and quality evaluation. My strong background in mathematics and AI gives me a much deeper understanding of how these systems work, and as a former Computer Science educator, I'm able to effectively communicate the possibilities – and limitations – of LLM systems. I excel at bridging the gap between complex new technologies and product design. I am currently looking for additional projects in the following areas: 1. LLM System Design a. Top-level design (agentic or b. Product Viability c. Practical cost analysis d. Existing Codebase Evaluation e. Proof-of-concept and MVP building f. Infrastructure analysis and design 2. Custom algorithm design/development a. Advanced semantic similarity/NLP systems b. Knowledge graphs c. Other complex data structures + algorithms 3. Fast web app development Using custom coding tools that I have built using LLM systems, I can build robust, reliable web applications extremely quickly, with test cases, understandable code, CI/CD, security, etc. If you want a good solution fast, I can help with that. Preferred stack is flask/psql/celery/redis/docker or Django. Current Role: Head of AI at Cadenza. Owner/researcher Guru Cloud & AI LLC Current Research: Dynamic Embedding-based Categorizational Trees Self-Contained Dynamic Agentic LLM systems Relational Semantic Embeddings Dynamic, Task-Relevant, Computationally-curated Memory Automatic Software Dev Tools Previous LLM projects: Cadenza: agentic system with graphics, research, high-volume RAG, artifact-based report generation, api learning system that uses reinforcement learning to learn to use any API from documentation, dockerized and scalable multithreaded environment. NewSeat: Dynamic in-conversation matching between candidates and jobs using a dynamic categorical tree, RAG on internal documents, in-conversation job applications, genai tools for creating job listings, application management. Lula, a solar expert who guides customers through the quoting process for a solar system and stores info it learns in salesforce. Jimmy, an AI who texts and qualifies people for healthcare. The conversations are automatically logged, tracked, analyzed, and maintained. Components: Python, Google Cloud, Twilio, Notion (for user interface), OpenAI. Completely serverless, runs at 4c/conversation and can manage nearly infinite scaling. Many more projects viewable on my Github and website (site in progress, see sidebar), but I have experience with all of the following: Java, Python, C#, Visual Basic, Unity CSS, javascript, PHP, html, nodeJS, .Net Google Cloud, AWS, Azure OpenAI, Anthropic, Llama, etc. PyTorch, DNN, model training/fine tuning (and why you probably shouldn’t be doing that in most cases) PromptFlow, LangChain (and why we can do better) SOAP/REST, flask, ngrok, nginx, django JWT, Oauth, https, ssh, general web sec Fullstack dev w/ docker, celery, docker-compose, CI/CD Google Sheets, Excel automation, Selenium/browser automation CRM systems (Salesforce, etc), API integrations SQL, PSQL, SQLAlchemy, SQLLite, no-sql Data analysis PDE Modeling, Numerical Methods, genetic algorithms, Neuron chain models Learned Scoring Algorithms

Java
Code Review
Web Application
JavaScript
Twilio
Microsoft Excel
Algorithms
Selenium
Web Development
API Integration
AWS Lambda
C#
Visual Basic
Python
Database
$167 hourly
Reza M.
- 4.9/5
- (15 jobs)
I am a Computer Science Professor at Drexel University College of Computing and Informatics, where I received my PhD in Computer Science. I'm here to broaden my network and try out the world of freelancing. I am also an AI educator and consultant. Check out my YouTube channel @Prof-Reza to learn more about Artificial Intelligence and the new wave of Generative AI. I am passionate about designing trustworthy and effective interaction techniques for Human-AI collaboration. My research focuses on how humans build trust toward Embodied Virtual Agents (EVAs). I have collaborated with MIT Media Lab, CMU HCII, Harvard University, and UCSD, publishing in venues such as Springer Nature, ACM, and IEEE. I have been recognized as an Outstanding Reviewer by ACM ICMI 2019 and ACM CHI 2021. My work has been featured by multiple news outlets including The Next Web, TechXplore, and CBS News.

Java
Tutoring
Writing
Mathematics
Management Skills
Design & Usability Research
Artificial Neural Network
Algorithm Development
Website
Mathematics Tutoring
Artificial Intelligence
Neural Network
C++
Desktop Application
$65 hourly
Joseph V.
- 5.0/5
- (9 jobs)
Flutter Developer with a proven track record of tackling business challenges and delivering robust software solutions. I have successfully launched multiple applications on the App Store. Choosing to work with me means securing not only top-notch code but also a dependable collaborator who is flexible with project durations, whether long-term or short-term. My background spans a variety of sectors where I have crafted solutions using both web and mobile technologies. Skills I bring to the table: Development for iOS & Android using Flutter. Expertise in Firebase and Firestore. Proficient in Dart. Ability to enhance and maintain existing codebases. Navigating the Apple approval process, including Account Sign In. Cloud Functions utilizing Typescript/Javascript. Proficiency in: Managing repositories and workflows on GitHub, including GitHub Actions.

Java
Microsoft Excel
R
Bootstrap
GoDaddy
Wix
CSS
HTML
Android App Development
Python
PHP
JavaScript
Node.js
MySQL
Flutter
$75 hourly
Chad H.
- 5.0/5
- (5 jobs)
Hello, My name is Chad Hurka and my recent professional positions have included Product Manager and Product Owner positions. I started my career as a Software Engineer and I have continued to foster a deep interest in programming. I maintain my technical expertise through Udemy courses and hobby projects. Most recently I completed an Amazon AWS course and also an Angular course. I find that keeping my technical experience current helps immensely when working as a product manager or a product owner because not only does it increase my credibility when working with software engineers, it also improves my understanding of certain technical requirements. I have experience in a number of industries including fintech (Broadridge Financial Solutions), healthcare (ZOLL Data Systems), and logistics (FedEx). In my opinion, these experiences have broadened my working knowledge and made me a well rounded professional. I’ve worked on SaaS applications with 300,000 users, mobile applications with 100,000 users (both Android and iOS), and enterprise applications. My experience also includes high-value SaaS applications with contract values starting at $1 Million. I’ve brought applications from concept stage all the way to the first sale and beyond in addition to leading mature, robust, flagship products. As a developer, my strongest programming language is PHP (including PHP 5+) closely followed by JavaScript (Typescript, jQuery) . I'm very comfortable at writing SQL and designing / interacting with relational databases. I have experience working with enterprise Java and C# web applications. In past freelance engagements I have upgraded legacy PHP applications, managed Wordpress websites, designed web pages / entire websites, advised on SQL and database structure, and contributed to various coding projects in various languages. Outside of work, I work as a volunteer firefighter and I hold a number of professional certifications related to those activities. I’ve also authored two books - one as an individual and one as a collaborative effort. I look forward to the opportunity to work for your organization. Thank you, Chad Hurka

Java
TypeScript
PHP
C++
SQL
JavaScript
C#
HTML
Data Analysis
C
Product Management
Adobe ColdFusion
Information Analysis
Database
$40 hourly
Juan L.
- 4.7/5
- (5 jobs)
Hello! I am a software engineer with 5 years of experience in software development. I have great experience working on the front-end, backend, and mobile. I have worked in the areas of social networks, finance, and e-commerce as a full-stack and mobile developer. I love startups and have previously been a co-founder & CTO at one, as well as a founding engineer at a Silicon Valley startup. I have extensive knowledge in the following programming languages / tools: React, React Native, Typescript, Python, Java, Firebase, Swift and NodeJS. I enjoy learning about new technologies and am open to picking up any new technologies that are needed. I'm extremely diligent and will do whatever it takes to get things done in a timely matter.

Java
Angular
Firebase
JavaScript
Swift
Python
Node.js
iOS
React
TypeScript
Flutter
React Native
CSS
Odoo Development
HTML
$90 hourly
Gavin G.
- 5.0/5
- (2 jobs)
I'm a software engineer with over a decade of professional experience in developing custom web software. My passion for programming dates back to childhood, and I've honed my skills in a variety of programming languages and technologies. Throughout my career, I've worn many hats in different areas and been recognized for delivering quality software with the highest degree of scalability and durability. Beyond my technical expertise, I'm a strong communicator able to work collaboratively with others and bring a friendly, approachable demeanor to every project I involve myself in.

Java
Spring Boot
Python
SQL
Laravel
Hibernate
Symfony
PHP
Doctrine ORM
Android
iOS
HTML
JavaScript
Elm
$50 hourly
John N.
- 5.0/5
- (1 job)
Top skills: java. As a Full Stack Web Developer with 15+ years of experience, I am passionate about creating beautiful, efficient, and functional websites and mobile applications. My expertise lies in developing web and mobile applications using the latest technologies, frameworks, and programming languages. I am also adept at designing and implementing custom software solutions that meet the unique needs of my clients. - FrontEnd: React, Vue, Angular, JavaScript, HTML5, CSS, Bootstrap, Wordpress, - Backend: Node, Express, Laravel, CodeIgniter, Python + Django, Laravel 9, Socket.io, Next.js, Nest.js, PHP, CakePHP, ***Java + Spring*** - Database: MySQL, MariaDB, MongoDB, PostgreSQL, Redis Mobile: React Native, Swift, Xcode, Java, Kotlin and objective-c - CMS: WordPress, Magento, Shopify, Drupal, etc - APIs: Stripe, PayPal, Google Contact/Calendar/Mail/Drive API, Microsoft Outlook/One Drive, Twilio API, Facebook API, Twitter API, Sentry, Mailgun. - Other Skills: GitHub, Bitbucket, Docker, Web Hosting.

Java
React Native
Apache Hadoop
Spring Cloud
Unity
MERN Stack
Vue.js
MySQL
PHP
JavaScript
C++
C#
Spring Boot
PostgreSQL
Node.js
$60 hourly
Drew R.
- 5.0/5
- (6 jobs)
I solve any problem you need related to Full-Stack, Front-End, Back-End Development, or Database Administration fast and efficiently. Anything that you want me to build, I will get it done! I am a software developer that has experience building websites for large businesses from scratch. I have built all kinds of applications from small jobs to enterprise applications throughout my career. I also have a Master of Science Degree in Web and Mobile Information Systems, and I am very versed in many programming languages. I never stray away from a challenge so feel free to ask your most difficult questions, and I will help you solve them!

Java
Back-End Development
Front-End Development
Software Development
AWS Application
Oracle
RESTful API
API Development
GitHub
Python
SQL
Spring Boot
JavaScript
CSS
HTML
$999 hourly
Roman D.
- 5.0/5
- (1 job)
Software Engineer with 7 years of professional experience in the fintech space and personal ventures in the AR and EdTech sectors.

Java
Technical Documentation
API Development
Ember.js
Node.js
Web Development
$50 hourly
Scott K.
- 5.0/5
- (4 jobs)
I am a dedicated full-stack developer based in the United States, specializing in creating dynamic server and client-side web applications, portals, and websites using a contemporary technology stack. With a keen understanding of functional business processes and information technology requirements, I excel in devising efficient and effective solutions. My expertise lies in object-oriented programming and database design, and I possess proficiency in multiple programming languages and MVC frameworks, including PHP, Node.js, Python, JavaScript, React, Angular, and jQuery. I am adept at collaborating with various operating systems, web servers, and network configurations, such as Linux, Apache, and nGinX. Specialties: - Mobile: React Native, Kotlin, Java - MEAN/MERN (Node.js) - Full Stack - HTML / CSS / Javascript / Typescript - React.js, Next.js, Angular.js - MySQL / PostgreSQL / SQL Coding / Mongo DB - API Integration (Map, Payment, Twilio, WebRTC, Banking ) - DevOps (CI/CD) / AWS / Azure / Linux / Apache server I thrive on challenges and enjoy working collaboratively with teams, fostering their development into self-directed problem solvers. Known for my high energy and proactive approach, I am committed to delivering outstanding results. If you are seeking a versatile and dedicated professional to contribute to your projects, I would welcome the opportunity to discuss how my skills and experience align with your needs. Thank you for considering me for your project.

Java
Golang
Python
C#
Node.js
TypeScript
Android
AWS Development
PHP
Firebase
ASP.NET
Spring Boot
Angular
React Native
React
$40 hourly
Nathan C.
- 5.0/5
- (1 job)
Hi! I'm a developer with industry experience in backend and mobile development and have experience building websites in the e-commerce and music spaces. Whether it's technical work you need done or consultation on implementation/approach to a problem, I'd love to help! - Expertise in Python, Java/Kotlin, and C languages - Experience and work with HTML, CSS, Javascript (jQuery), and Shopify - Experience working both as a team player and a team leader - I believe in fast feedback/results and iterating towards success

Java
Unity
Game Design
Software Consultation
Web Development Consultation
Game Consultation
Software Development
Software Design
Web Development
Android App Development
AWS CloudFormation
Kotlin
C#
C++
Python
$54 hourly
John E.
- 5.0/5
- (28 jobs)
One of the top 20% programmers in the U.S with the highest scores, ratings and feedback's. My mission is to provide software development and support services of the highest quality, while maintaining a personal relationship with my clients. I aim to reduce the industry jargon to a minimum and understand the business of my clients so that I can suggest the best solutions. I understand that software should be employed to aid the way in which my clients do business and not force them to adapt in order to use the software. I develop solutions that are innovative yet reliable. I remain focused on my clients' budgets and timescales and keep them informed of progress throughout. ► Skills: ✔ Complex Problem Solving — Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions. ✔ Programming — Writing computer programs for various purposes. Systems Analysis — Determining how a system should work and how changes in conditions, operations, and the environment will affect outcomes. ✔ Judgment and Decision Making — Considering the relative costs and benefits of potential actions to choose the most appropriate one. ✔ Systems Evaluation — Identifying measures or indicators of system performance and the actions needed to improve or correct performance, relative to the goals of the system. ✔ Critical Thinking — Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems. ✔ Operations Analysis — Analyzing needs and product requirements to create a design. ✔ Active Listening — Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times. ✔ Mathematics — Using mathematics to solve problems. Let’s Connect! ☛ John El Hanafi

Java
Web Hosting
CSS
HTML
AJAX
WordPress Plugin
WordPress
MySQL
XML
PHP
$75 hourly
Scott K.
- 4.9/5
- (66 jobs)
I am a professional software developer with 25 years of experience. I focus on mobile app development for Android and iOS, web development, and cloud services. Throughout my career I have gained experience in many different technologies, from modern cloud, mobile, and web development architectures all the way back to mainframe systems. My app development experience includes location services, map integration, user authentication and user profile management, payment functionality, media playback including both audio and video, and in-app purchases. I can work with many services available from Amazon Web Services (AWS) and Google Cloud Platform (GCP). I am committed to producing a quality product. I always stand behind my work and communicate as much as I can. The more my client and I both know about what is being done, the happier everyone is.

Java
ChatGPT
Google Cloud Platform
User Profile Creation
Location-Based Service
Firebase
Amazon Web Services
Node.js
Kotlin
Swift
iOS Development
iOS
Android App Development
Android
Mobile App Development
$65 hourly
Nadya K.
- 5.0/5
- (46 jobs)
I am TOP RATED, a strong Java and PHP developer from the United States. In the past, I worked for the biggest companies such as Oracle, Accenture, First Data, Barclays Bank, etc. I have 20+ years of experience in web development and I highly specialize in - Java (Java EE, Spring, Spring Boot, Spring Annotations, Spring MVC, Spring Security, JMS, Java Struts, Java Servlets, JSP, Hibernate, MyBatis, REST, ActiveMQ). - PHP (Laravel, WordPress) - Javascript (React, Angular, JQuery, Vue.js) - HTML, CSS, Bootstrap, Tailwind CSS - MySQL, Postgres, Oracle, NOSQL, MongoDB. - AWS, WildFly, Apache Tomcat I have built more than 200 systems and I am comfortable working with both existing and new projects. I helped hundreds of clients in their business and I am here to help you as well!

Java
Web Service
J2EE
Vue.js
AngularJS
HTML
React
Laravel
PHP
SQL
Microservice
Java Persistence API
Spring MVC
Spring Boot
Spring Framework
$80 hourly
Jared B.
- 5.0/5
- (3 jobs)
Part mad scientist, part caring teacher and tech evangelist, this "Near Wizard" spreads the magic of code and automation wherever he goes. Jared is a skilled software engineer and educator.

Java
Web Development
C#
Git
JavaScript
React
SQL
C++
Python
$100 hourly
Scott M.
- 5.0/5
- (4 jobs)
I am a hands-on software architect and developer with over 20 years' experience building enterprise software. I am proficient in dozens of languages, but my primary stack is C#/.NET/SQLServer/Angular. I am also intimately familiar with the Amazon Web Services cloud environment and all their services. I love a good challenge and I love to solve complex problems, that's what drives me more than anything. My strengths would lie in software and network architecture and development, framework development, service-oriented architecture, security, encryption, ETL processes and API creation and integration. For the last several years I have been working extensively with big data acquisition/ETL, processing, analysis and modeling. Note: for fixed rate projects I take the lesser of either my hourly rate or the agreed upon fixed rate. I'm also happy to do an initial consult (usually no more 30-60 mins) to review the project and provide estimates. With Upwork, you get what you pay for, if you want top quality work delivered fast then I'm your man! I look forward to hearing about your next project.

Java
Microsoft Azure
Microsoft SQL Server
.NET Core
RESTful API
NoSQL Database
Amazon S3
Amazon DynamoDB
Amazon Web Services
Big Data
HTML
Quartz
SQL
ASP.NET
C#
$65 hourly
Bradley R.
- 5.0/5
- (3 jobs)
Hi! I am a software engineer with extensive experience developing software for corporations, startups, and independent clients alike, and I am here to solve the problems that stand between you and bringing your vision to reality. My expertise is in cloud-based API design, development, testing, debugging, deployment, and support, though I do operate across the full stack. I take a people-first approach in my work and believe that effective communication is essential to success. My technical skill set includes: - REST API development using TypeScript/JavaScript, Node.js, and Next.js, or Java with Spring Boot - Frontend development using React with Tailwind CSS, and basic HTML/CSS - Third party API integrations (with particular expertise in the payment processing domain) - Software testing (unit testing, end-to-end testing, and load testing) - API and microservice architectural design - Containerizing applications using Docker - Deploying and managing applications on the Azure and AWS cloud platforms - REST API design and implementation using Swagger - Event streaming using Apache Kafka - SQL Server, PostgreSQL, MySQL, MongoDB, and Redis - Python for scripting tasks - Building CI/CD pipelines with Concourse I understand the importance of robust, maintainable, fault-tolerant, and understandable software, so thoroughly testing, logging, documenting, and maintaining coding standards are all a part of my every day work. --- My philosophy as a software engineer is a little bit different than most because I like to take a "people first" approach. This means placing priority on: - Building a relationship of mutual trust, respect, and humility with my stakeholders (you!) and teammates - Communicating openly and proactively to ensure that our requirements and expectations are aligned - Always making ethical decisions - Always keeping the end-user in mind You have a vision for a high-quality, successful software product. With my technical skill set and people-first approach to each job, we can work together to bring that vision to reality. Please feel free to reach out if you'd like to discuss your specific project needs, or check out the Employment History section of my profile for more details on my projects and experience. Thank you for considering me as your software engineer!

Java
Software Testing
Software Design
Git
API Development
TypeScript
Microservice
React
Node.js
Spring Boot
RESTful API
Swagger
JavaScript
Software Documentation
Technical Writing
$15 hourly
Aaron P.
- 5.0/5
- (34 jobs)
Degree in Web Development and Design with an interactive web media concentration (graphic design). 4.0 GPA in college. I have designed several websites and completed many freelance projects using WordPress, Adobe Illustrator, Photoshop, and InDesign. I have taken several photography and art classes and have a portfolio of drawings, paintings, and digital designs. I am seeking freelance projects as a junior website developer/designer, graphic arts and social media designer, and/or photo editor where I can use my creative skills and experience. I can design a professional and aesthetically pleasing website as well as digital and print media to help your business succeed. I am proficient at designing logos, icons, social media content, newsletters, brochures, signs, illustrations, and graphics for web and print. I am creative and detail-oriented and very willing to learn more in the amazing field of web and graphic design. I am confident that my proven track record of excellent work ethic, attention to detail, reliability, and exceptional performance will allow me to contribute to your team’s success. I look forward to discussing your job opportunity and my qualifications with you in more detail. I have excellent references from previous clients that I will provide upon request. Thank-you so much for your time and consideration. COMPETENCIES - Fast worker and fast learner and hard worker who is proficient in multimedia Web tools - Exceptional communication and networking skills - Successful working in a team environment as well as independently - Delivers quality results - Proficient using Adobe Photoshop, Illustrator, InDesign, WordPress, Android Studio, Inkscape, Canva, Adobe Acrobat DC, Express, ChatGPT - HTML and CSS - Experience with Java, XML, Bootstrap 5, JavaScript, C sharp, Python - Social Media Design including Youtube Thumbnails, Posts, Shorts, and other videos WORK EXPERIENCE Google Search Rater - for Telus International, November 2022 to present Social Media Assessor - for Lionbridge, May 2020 to June 2021 Catalog Crawling Annotator - for Lionbridge, June 2021 to December 2021 Freelance Web and Blog Design - shopwildflower website, Fenwick Island website, Accounting website, Dental Practice website Freelance Ad Design, Logo Design, Photo Editing, Photography, Branding, Brochure Design, Business Stationery and Writing

Java
Image Editing
Photo Editing
Social Media Advertising
HTML
JavaScript
CSS
Bootstrap
Android Studio
Adobe Dreamweaver
Adobe InDesign
Adobe Photoshop
Logo Design
Adobe Illustrator
Print Design
$75 hourly
Tony C.
- 0.0/5
- (1 job)
Scientist by training, I have over 20 years of experience developing software and a decade of experience in data analysis and manipulation. I am highly proficient in several programming languages, and have experience with microcontrollers and IoT devices as well. Due to the COVID pandemic, I spent several months learning how to build and train Machine Learning models, using popular toolkits such as PyTorch, Tensorflow, Keras and Prophet. Most of my work has been in web design / databases (LAMP stack), but I also have years of experience in lab equipment automation (LabView and C drivers over GPIB and RS-232).

Java
Simulation Software
CodeIgniter
jQuery
PHP
JavaScript
Perl
HTML5
C
Linux
Machine Learning
Python
$75 hourly
Nick T.
- 0.0/5
- (0 jobs)
Experienced IT Tech with a demonstrated history of working in the information technology and services industry. Currently completed My Bachelor's degree focused in Computer Science at University of Arizona Global Campus.

Java
HTML5
Swift
CSS
JavaScript
C#
SQL
C++
Python
$10 hourly
Alson S.
- 5.0/5
- (0 jobs)
Hi! I’m Alson Sharma, a results-driven developer with an Associate Degree in Math/Computer Science. I combine algorithmic precision and modern tech stacks to build fast, secure, and user-centric web apps. Technical Expertise: ✅ Frontend: React.js, Next.js, JavaScript (DOM, AJAX, Async), Tailwind/Bootstrap, Redux ✅ Backend: Node.js, Express.js, REST APIs, MongoDB, MySQL, CRUD, Auth (JWT/OAuth) ✅ Dev Tools: Git/GitHub, Docker, Postman, VS Code, Chrome DevTools ✅ Deployment: Render, Vercel, Hostinger. Why I Stand Out: 🔹 Math-Backed Logic: Strong grasp of DSA, OOP, and system design for efficient, scalable code. 🔹 Full-Cycle Development: From UI/UX (CSS, React) to backend logic (Node.js, APIs) and database optimization (MongoDB, MySQL). 🔹 Clean Code Advocate: Version control (Git), testing, and documentation are baked into my workflow. I Deliver: ⚡ Pixel-perfect, responsive frontends ⚡ Secure, high-performance backends ⚡ Projects that launch on time, every time Need a developer who understands both code and client needs? Let’s chat!

Java
NodeJS Framework
C++
GitHub
Git
MySQL
MongoDB
Bootstrap
React
Node.js
HTML
JavaScript
Python
CSS
$50 hourly
John N.
- 5.0/5
- (3 jobs)
Process-oriented cloud developer with works in multiple programming environments including Java/Python and SPA frameworks. Updates technical skills through courses/bootcamps and applying learnings to both professional and personal projects. An asset for creating scalable and secure solutions via collaboration, autonomy and innovation.

Java
CodeIgniter
Python
HTML
API Development
Spring Boot
Spring Security
JavaScript
PostgreSQL
Laravel
Flutter
Vue.js
Django
Node.js
React
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