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Freelance Senior Software Engineers
Check out freelance Senior Software Engineers on Upwork, with the skills you need for your next job.
- $45 hourly
- 5.0/5
- (111 jobs)
What i do in WordPress: - WordPress Plugin Development (From scratch or Customize any plugin). - WordPress Theme Development (From scratch or with ANY framework). - API Integration (Integrate any API to WordPress). - WP Rest API (adding or editing endpoints, authentication with CRUD for any post type). One of my plugins in WordPress Repository bit.ly/omar-wpp Also in the Woocommerce marketplace bit.ly/omar-woop This is exactly what you are going to get from me. (Client Review) "Omar completed every task to a high standard and before deadlines. Omar was able to look at the scope of work and offer further advice which made the performance of the website better."Senior Software Engineers
WordPress e-CommerceAJAXGoogle Maps APIAPI DevelopmentPlugin DevelopmentWordPress PluginWordPressPHP - $33 hourly
- 4.9/5
- (36 jobs)
Hello, I'm narrowly specialized Drupal developer. I started working with Drupal in 2008 and with pleasure continue working with it now. My main areas of work: • develop site from scratch, • update/fix/renewal existing sites • develop custom modules for Drupal • develop Drupal theme • Drupal sites maintenance • create patch to Drupal core and contrib modules • configure/integrate external API and libraries into Drupal site • any other trivial and non trivial things related with Drupal My drupal account is drupal.org/u/myha I value myself as a responsible and honest employee. Best regards MishaSenior Software Engineers
MySQLPHPDrupaljQueryCSSJavaScriptHTML - $75 hourly
- 5.0/5
- (172 jobs)
I'm a tech-enthusiast with both front- and back-end experience using a variety of technologies. I have experience designing, developing, and maintaining small and enterprise level applications using various development tools and languages to meet the unique project requirements. I also maintain several linux servers and am well versed with AWS cloud infrastructure.Senior Software Engineers
MySQLPHPWordPressCSSHTMLjQuery - $50 hourly
- 4.8/5
- (26 jobs)
Senior Full-Stack Software Developer with +10 years of experience. Expert in Javascript and highly experienced with the most important JS frameworks (VueJS, React and Angular/AngularJS). Expert in PHP and Java. I'm highly experienced with Laravel & Symfony PHP frameworks and Spring Java Framework. Software quality, turn-around time and client satisfaction are my main goals Always learning, especially in the Software world where new tech pops up every other day, so as to stay on top of the current trends and practices.Senior Software Engineers
React NativeTailwind CSSPHPJavaScriptSymfonyReactLaravelHTMLNext.jsAngularMySQLNuxt.jsMongoDBVue.jsD3.js - $45 hourly
- 4.7/5
- (32 jobs)
I have been a full-stack LAMP web developer for 20+ years and have been developing using the Codeigniter framework, and other frameworks since 2009. I generally use PHP frameworks for back end development, as well as JavaScript frameworks such as Angular and Ember. However, I am also an expert in general PHP and Object Oriented PHP development. I have spent the last 20+ years working as an independent web developer. I have programmed using PHP, Perl, jQuery, SQL and have designed some very advanced web applications for various companies across the Untied States. I also operate a web server and have a firm grasp of UNIX/Linux administration and general web server maintenance.Senior Software Engineers
Custom PHPCSSJavaScriptjQueryAuthorize.NetAJAXLinux System AdministrationMVC FrameworkRESTful ArchitectureCodeIgniterMySQLPHP - $70 hourly
- 5.0/5
- (18 jobs)
As a Senior Developer with over a decade of experience, I’ve dedicated my career to mastering backend development and resolving complex performance issues across the entire stack. My expertise spans coding, databases, and underlying operating systems, where I’ve consistently delivered high-performance, scalable solutions. I specialize in optimizing and troubleshooting with a deep proficiency in Rust, PHP, MySQL, Varnish, nginx, Linux, FreeBSD, and AWS. My work has empowered clients like AWS Professional Services and Shure Inc. to achieve their goals, from building APIs that handle over 100,000 requests per second to creating custom, geographically distributed high-availability CDNs. One of my proudest achievements is maintaining an eight-figure monthly billing system, ensuring both reliability and efficiency at scale. Beyond technical skills, I’m known for my ability to communicate complex ideas clearly to non-technical stakeholders while effectively leading and mentoring junior developers. I’m passionate about continuing to push the boundaries of what’s possible in backend development and am always eager to take on new challenges that require innovative solutions and high-level problem-solving.Senior Software Engineers
Amazon Web ServicesLinux System AdministrationUnixPHPJavaScriptHTMLUbuntuLinuxRustSymfonyCSSPostgreSQLSQLMySQL - $50 hourly
- 4.9/5
- (41 jobs)
➡️ I'm a full-stack WordPress, WooCommerce, and JavaScript developer w/ 20 years of experience. Invite me or save my profile for future reference. Always happy to help. ➡️ Skills: ★ WordPress ★ WooCommerce ★ 3rd-Party integrations (Stripe, MLS, Geolocation, Maps, social media, SaaS, etc) ★ Custom API integrations ★ Custom WP APIs ★ Headless WordPress ★ ACF - Advanced Custom Fields Pro ★ Custom Post Types ★ JavaScript ★ Custom Plugins and Themes ★ Troubleshooting and fixing WordPress errors ★ Elementor ★ New Sites (custom, existing or premium theme) ★ Responsive, Mobile-Friendly ★ Page Speed Optimization / Lighthouse scores ★ Theme Customization ★ Redirects ★ Security (Wordfence, etc) ★ GravityForms, Fluent Forms ★ Cloudflare ★ Google Analytics, HotJar, Facebook Pixel and other snippets ★ And more ➡️ Other Skills ● Alpine.js ● TailwindCSS ● Next.js ● Hasura ● HTML5 / CSS3 ● jQuery ● Sass, Less ● PHP / MySQL ● cPanel, WHM, MySQL Administration ● JavaScript ● React ● Node / NPM ● Git / GitHub / GitLab ● Netlify / Jamstack ● WebpackSenior Software Engineers
StripeAPI IntegrationTailwind CSSWordPress DevelopmentPlugin DevelopmentWordPress ThemeWordPress PluginPlugin CustomizationTheme DevelopmentTheme CustomizationPHPCSSJavaScriptWooCommerceWordPress - $45 hourly
- 4.6/5
- (13 jobs)
Vadim is a passionate software engineer with the experience in the web application development using PHP and JavaScript. He is very attentive to details and is capable of converting business requirements into working and clean code. As a freelance developer, Vadim worked on projects of various scale that involved PHP development and adaptive websites development using modern frameworks like Bootstrap, Angular. Some of the projects included configuration and custom plugin development for the Wordpress-based websites.Senior Software Engineers
AWS CloudFrontVuexServerless ComputingSwiftAWS IoT CoreAWS CloudFormationAWS LambdaReactVue.jsPHP - $45 hourly
- 4.8/5
- (21 jobs)
I am a senior web developer with more than 10 years of experience in back-end (PHP) and front-end programming; architecture patterns (such as MVC and others); relational databases (MySQL, SQLServer); the development of different modern applications based on WordPress (plugins/themes); Magento and Laravel; custom, functional server-side scripts for Linux based servers (Bash, ZSH, AWK); Docker with CI/CD; and implementing APIs from various services (Google, Facebook, LinkedIn, etc.).Senior Software Engineers
Bash ProgrammingMySQL ProgrammingCI/CDLinux System AdministrationMagentoWooCommerceMagento 2Search Engine OptimizationDockerGitEcommerce WebsiteWordPressCSSJavaScriptPHP - $105 hourly
- 4.7/5
- (26 jobs)
I have been a LAMP stack developer since 2003. I have worked primarily with Object Oriented PHP and MySQL during that time. I am competent as a Linux Administrator and an expert Web Developer. I most enjoy using Laravel and Vue at this point in my career but am comfortable in nearly any LAMP/LEMP based environment. I enjoy always learning and finding the best solution to a problem. Here is a list of some of the things I’m familiar with: Object Oriented PHP MySQL & Performance Tuning of MySQL Maria DB Laravel 5+ Vue.js AngularJS 1 & 2 WordPress HTML5/HTML/XHTML JavaScript CSS3/CSS Git XML AJAX SOAP REST fPDF ImageMagick PDO ADODB PHP Linux - (Ubuntu & CentOS) Apache2 Nginx Flexbox MongoDB Composer NPM Google Maps Javascript API YouTube Javascript API Google Analytics Mandrill Email API Twitter API Flickr API USGS Water Data SnowTel StrongLoop/Loopback Parse (by Facebook) and its migration process to Mongo Handlebars.js jQuery jQuery UI YUI2 (with some YUI3) TinyMCESenior Software Engineers
CentOSLAMP AdministrationUbuntuETLMySQLMongoDBWordPressVue.jsLaravelPHP - $20 hourly
- 5.0/5
- (44 jobs)
I am Premium WordPress developer specializing in High quality WordPress development. I have more than seven years of experience in web development. I have worked only with WordPress for last four years. I specialize in these areas: ✔ Custom WordPress Plugin. ✔ Custom WordPress Themes. ✔ Most popular WordPress plugin customization like Wocommerce, WP job manager, Gravity Form. ✔ WordPress Optimization(Image compress, GZip, Browser cache, server cache, minify code, WordPress cache plugins). ✔ WordPress Most popular Themes customization and child theme building. ✔ WordPress Design and development(ACF's, Visual composer and more) ✔ WordPress Site maintenance & Bug Fixing. ✔ HTML to WordPress. ✔ WordPress API Development. ✔ Responsive(mobile, tablet, iPad). I am very familiar with most popular WordPress Premium themes and framework like, The7, Divi, Codestar. Main Goals: ✔ 100% customers satisfaction is the my first goal. ✔ Clean and well structured code and use oops for better development. ✔ The highest level of optimization. ✔ We don't touch any core files. What you get: ✔ Response time within 24 hours. ✔ Negotiate on Fixed price works. ✔ Provide you full documentation to admin like Add, Edit page and Menu without any coding skill. Thank you in advance for your time and consideration. I look forward to working with you soon.Senior Software Engineers
Plugin DevelopmentEcommerce Website DevelopmentElementorWordPress Malware RemovalDiviWordPress ThemeWooCommerceWordPress DevelopmentBusiness with 1-9 EmployeesPage Speed OptimizationWordPress PluginPHPWordPressSQLWebsite - $50 hourly
- 5.0/5
- (35 jobs)
I am Naveen Giri 👋🏻✋. I am 8+ years of experienced WordPress and PHP developer. I am capable of handling projects related to blogging, E-commerce, and Membership. I am a WordPress Plugin Developer so I can Develop any Custom WordPress Plugin based on requirements. I am a WordPress 4.8, 4.9, 5.1 Core contributor, and BuddyPress 2.9, contributor. I am passionate about my work. Working hard every day to make myself the Best in my field. Since I am a Professional Developer, I love to treat my client professionally with a 100% completion rate. I am also happy to give my personal advice in case the client has a need for that. I am willing to handle work quickly. although I work alone when there is a need for quick work, I have a few remote Team Members to handle it. You can know more about me from WordPress release blogs. Expertise in ◉ WordPress ◉ Php ◉ Html, Html5 ◉ Website Designing ◉ Website Development. ◉ Graphics Designing. ◉ WordPress plugin modification. ◉ Woo-commerce Customisation. ◉ woo-commerce theme development etc. ◉ eCommerce site developing on the woo-commerce platform. ◉ Custom Plugin and theme development ◉ Performance improvement ◉ WP Geodirectory ExpertSenior Software Engineers
MySQL ProgrammingBuddyPressPSD to WordPressEcommerce Website DevelopmentHTML5WooCommercejQueryCSSPHPJavaScriptWordPress - $120 hourly
- 4.8/5
- (110 jobs)
Hi, my name is Andrew and I began using Wordpress when it first began. I've spent most of my waking hours for the last ten years designing, programming and operating Wordpress sites. One of my specialties is taking an idea from scratch and creating a full-fledged platform. I go beyond to produce sites with a unique, outstanding, contemporary look-and-feel. With extensive knowledge of web mechanics, I'm able to optimize complex integrations to require little-to-no maintenance while running on their own for years. I am a PHP programmer at heart and create features that are best suited for the job at hand, as opposed to trying to fit a job into features that I can find in pre-existing themes and plugins. I'm also attuned to performance issues and do a lot of repurposing of plugins. I also specialize in new and creative e-commerce solutions and bringing customized login panels for administrators to handle the website, while bypassing the clunky admin panel used by most wordpress sites. I can redo sites for design and optimization and can fix anything. I'm a geek at heart but pride myself with EXCELLENT customer service.Senior Software Engineers
Theme DevelopmentWooCommerceElementorAPIEcommerceWeb DevelopmentWordPressEcommerce Website DevelopmentWeb DesignWordPress PluginPHPJavaScript - $25 hourly
- 4.4/5
- (43 jobs)
I have more than 6+ years of experience for CS-Cart in web development and app development . I can develop or customise any type of PHP developed websites.I am ready to work on CS-Cart, PHP, Android, iOS, React Native and BI developement Project. I can hour hourly basis as well as on project basis. I am always open to give my suggestions to improve project models in case that are not inline. I have expertize in the following technologies. - CS-Cart Development - App Development - CS-Cart App Development - React Native App Development - Android & iOS app development - SMARTY, HTML,CSS, Bootstrap, J Query and JavaScript - Core PHP - CS-Cart Joomla - CS-Cart Theme customization - All payment gateways (International or specific to country or region) - All Shipping methods (International or specific to country or region) - REST API and SOAP - Google Maps and another related google API's - E-Commerce Connectors - Shopping carts - E-commerce solutions - Plugin and Add-on customization and development - Web scrapping - Python - Web scraping using python - React, Node js - CS-Cart addon customization - CS-Cart multi vendor - CS-Cart upgradation - CS-Cart Payment issues - CS-Cart Subdomain - Cs-Cart Reseller - Progressive Web App - Push notification I'm open to discuss any project related to E-Commerce or App Development or PHP development. Thanks. Shailesh KumarSenior Software Engineers
CSSEcommerce Website DevelopmentApp DevelopmentCS-CartHTMLMobile App DevelopmentCSS 3KotlinPythonPHPHTML5SwiftiOSAndroidReact Native - $50 hourly
- 5.0/5
- (61 jobs)
Hello, I'm Biruk Adera, a seasoned Node.js backend developer with over 6 years of experience crafting high-performance and scalable applications. I specialize in building robust server-side solutions for web and mobile applications, ensuring they operate seamlessly and efficiently. Why choose me? ⭐️ Expertise: My proficiency in Node.js is backed by a strong foundation in JavaScript, and I've successfully delivered numerous projects, handling everything from API development to server optimization. ⭐️ Scalability: I'm well-versed in designing architectures that can effortlessly scale as your application grows, keeping it responsive and cost-effective. ⭐️ Performance: I'm dedicated to optimizing code and enhancing application speed to ensure a snappy user experience. I'm a firm believer in keeping the codebase clean and maintainable. ⭐️ Team Collaboration: I'm a strong team player with effective communication skills, making sure your project progresses smoothly and according to your requirements. Skills: 👉🏾 Node.js 👉🏾 Express.js | Nest.js 👉🏾 MongoDB / Mongoose 👉🏾 RESTful APIs 👉🏾 GraphQL 👉🏾 Authentication & Authorization (JWT, OAuth) 👉🏾 Real-time Applications (Socket.io) 👉🏾 Docker & Containerization 👉🏾 Automated Testing (Jest, Cucumber, Cypress) 👉🏾 Performance Optimization 👉🏾 Security Best Practices 👉🏾 AWS / Azure / Google CloudSenior Software Engineers
Automated Deployment PipelineSocket.ioGraphic DesignAndroidGitHubDevOpsExpressJSReactAngularNode.jsJavaScriptPythonLaravelPHPDjango - $20 hourly
- 4.8/5
- (5 jobs)
Over the last 10+ years, developed a wide range of web application. Skilled on several Programming Language PHP, PHP Framework Laravel , Codeigniter , Android , JavaScript , jQuery ,Vue.js . I developed several Web and Android applications. I always like to write clean and well-designed code. I am a quick learner and a programmer. I gained expertise in the following fields: Backend skills: - PHP - CodeIgniter - Laravel - RESTful APIs Frontend skills: - Reactjs - JavaScript - JQuery - AJAX - HTML5, CSS3 - Bootstrap Databases: MySQL, SQLite Mobile Application Development Background - Android - Firebase Tooling: -PhpStorm, NetBeans, Android studio - Bitbucket - GIT I am focused on developing web and mobile that are easy to use. Employer satisfaction is my priority. I am able to work alone with client directly and find solutions to the most complex tasks, and I am also a team player. Please take some time to check my education, portfolio. Thank you for taking your time to review my profile. I'll be happy if get the opportunity to work for you. Thank you!Senior Software Engineers
AndroidPHPjQueryCodeIgniterBootstrapHTML5CSS 3AJAXLaravel - $30 hourly
- 5.0/5
- (8 jobs)
I develop web applications with PHP(Symfony, Laravel), Javascript (Nest, React, Next, and jQuery), and HTML/CSS. I have academic education in the IT field, and I've been working as a programmer for more than ten years. What are my services: 1- Develop custom websites/web applications based on Laravel/Symfony and React/Next.js 2- Maintain PHP/Javascript web application 3- Improve your website performance 4- Deploy your project to cloud services and config them I don't care just about the code, but I think about how my developed software can create value for my clients and efficiently reach their goals. You can contact me for any advice about your project, even if you don't want me to develop your software. I'm looking forward to hearing from you.Senior Software Engineers
HTMLReactNode.jsCSSMySQLSymfonyWebsiteCustom PHPAPILaravelPHPJavaScriptNestJSNext.js - $150 hourly
- 5.0/5
- (19 jobs)
I am a web and mobile developer with significant digital marketing experience focused on creating amazing customer experiences. I primarily use PHP and Javascript with Laravel, Vue.js, NativeScript, and WordPress and have built integrations between these tools and other platforms. I have also worked closely with digital marketing teams to automate prospect, lead, and customer data collection, targeting, and messaging. Projects include, tracking customer website behavior and triggering email campaigns based on the behavior, lead gen and nurturing, email template design and setup, etc. I have worked with a variety of marketing automation platforms, including Klaviyo, MailChimp, Eloqua, Responsys, Marketo, Mautic, and more. I have worked on development and marketing teams at large and small companies for over 25 years, so there's a good chance I'll bring additional experience and support to your project that will make it even more successful.Senior Software Engineers
Vue.jsPage Speed OptimizationWordPressEmail CommunicationSearch Engine OptimizationWooCommerceEmail Marketing StrategyWordPress PluginEmail MarketingDatabaseLaravelJavaScriptPHPAPI IntegrationNativeScript - $115 hourly
- 5.0/5
- (6 jobs)
I'm an Oxygen Builder specialist - I had a senior support role on the Oxygen Builder support team for three years and I know the builder inside and out. I usually build based on a Figma design - it's the quickest way to build a site as it's so easy for me to see the pixel-perfect design, rather than guessing based on a PDF or something similar. I have also spent that time working with ACF, and I have built multiple sites where the content is fully editable using ACF so that users don't need to go into Oxygen. For animation, I use Motion.Page or CSS Keyframes if the animation is less complex. I appreciate that my rate may be higher than what you would be looking to pay, but I can assure you that I will be noticeably faster and more thorough than similar people applying for this gig. If you're interested, please get in touch.Senior Software Engineers
Windows AdministrationTicketing SystemLinuxCustom PHPServer AdministrationMicrosoft WindowsGitHubLinux System AdministrationGoogleIssue Tracking SystemPHPHTMLWooCommerceCSS 3MySQL - $75 hourly
- 5.0/5
- (10 jobs)
I am a US Based web developer with 15 years of experience. I specialize in front end development including Javascipt, React, LitJS Web components and CMS templating. I have also spent many years building websites in Wordpress, Shopify, Magento, and Drupal utilizing PHP and Liquid. I am currently in the process of being certified as an Web Accessibility specialist and everything I build is accessible and WCAG compliant, Including email templates! Top rated Plus on Upwork with 100% job success! I'd love for you to be my next client.Senior Software Engineers
CSS 3styled-componentsWeb AccessibilityJavaScriptCSSjQueryPHPStorybookReactHTMLMagentoWordPressDrupal - $90 hourly
- 5.0/5
- (112 jobs)
Greetings! I'm a highly skilled Magento developer with a passion for crafting robust and scalable e-commerce solutions. With over 13 years of hands-on experience, I boast a profound understanding of the Magento platform and its vast capabilities. My expertise spans custom module development, seamless integration with third-party services, performance optimization, and smooth site migration. Over the years, I've successfully executed diverse projects for clients across various industries, consistently delivering top-notch results that surpass expectations. My forte lies in problem-solving, meticulous attention to detail, and a knack for meeting tight deadlines, making me the perfect fit for any Magento project. I prioritize transparent communication and foster positive, professional relationships with my clients. I'm committed to keeping you in the loop with timely updates and readily available to address any queries or concerns. My ultimate aim is to establish enduring partnerships and empower businesses to thrive through cutting-edge technological solutions. If you're in search of a dependable Magento developer to realize your e-commerce aspirations, I'm here to help. Let's collaborate and transform your vision into reality! Looking forward to connecting with youSenior Software Engineers
Linux System AdministrationWebsite MigrationData MigrationEnterprise Resource PlanningMagento 2MagentoPHPJavaScriptEcommerce Website DevelopmentMySQLEcommerce WebsiteWeb DevelopmentDocker - $50 hourly
- 4.1/5
- (112 jobs)
Greetings! I'm Tejdeep Singh, a seasoned web developer with a stellar track record of 14 years in the industry. My expertise lies in crafting dynamic e-commerce solutions and captivating WordPress websites. With proficiency in frameworks such as Magento, Shopify, WordPress, and BigCommerce, along with robust skills in PHP and MySQL database management, I am well-equipped to bring your online vision to life. 🚀 Why Choose Me? ✅ Extensive Experience: Over a decade of hands-on experience in web development, specializing in e-commerce and WordPress platforms. ✅ Versatility: Proficient in Magento, Shopify, BigCommerce, and WordPress, offering a comprehensive range of web development services. ✅ Technical Mastery: Skilled in PHP and MySQL database management, ensuring seamless functionality and performance optimization. ✅ Client-Centric Approach: Dedicated to understanding your unique requirements and delivering tailored solutions that exceed expectations. 🔍 Services I Offer: Custom e-commerce website development WordPress website design and development Theme customization and integration Plugin/module development and integration Database management and optimization 📈 My Approach: I take a collaborative approach to every project, working closely with clients to understand their goals and vision. From concept to execution, I prioritize clear communication, attention to detail, and timely delivery to ensure project success. 🌟 Client Satisfaction Guaranteed: Your satisfaction is paramount to me. I am committed to delivering high-quality solutions that meet your requirements and drive tangible results for your business. 💬 Let's Get Started: Ready to elevate your online presence? Feel free to reach out to discuss your project requirements and objectives. I'm eager to partner with you and turn your ideas into reality!Senior Software Engineers
JSON APIShopifyPHPShopify TemplatesShopify PlusEcommerce SupportEcommerceMagento 2MagentoReactJavaScriptEcommerce WebsiteCSSWordPressHTML - $50 hourly
- 5.0/5
- (39 jobs)
I'm a PHP and Python developer with 6+ years of experience. My passion is back-end programming. I like coding the software logic making all the 'magic' behind the curtains. Here is my shortlist of skills and experience. Python: - building chat-bost (Telegram, Discord, social networks) - making different web-scrapers - web-development and interacting directly with MySQL - building different analytics and working with cryptocurrency APIs PHP: - a full-stack web developer with 6+ years of CodeIgniter/WordPress/Opencart experience. - developed several websites and web applications (most of them are written from scratch, and others are based on such engines as Joomla and WordPress) - building WordPress themes and plugins - working with XenForo and developing plugins for the engine I always speak with the client during working on the project to get a clear understanding of his/her needs. My #1 goal will always be to meet your needs and deadline. Just let me know what you want and I'll help you bring your ideas to life. I'd like to find jobs that will allow me to grow as a professional. I want to build and architect applications, make sites on different frameworks and technologies, not only well-known CMSs like WordPress or Opencart (but I like and know them pretty well). Thank you in advance for your time and consideration. I look forward to working with you soon. My experience and skills full list - PHP 5.4/5.5/7 (+CodeIgniter, Symfony) - Python(2.7/3.6) (+Peewee, BeautifulSoup, Scrapy, Requests) - MySQL - Twitter bootstrap - Javascript/jQuery - Frameworks: CodeIgniter, Yii2 - CSS - UML - WordPress - Opencart - Joomla - XenForo - Web Scraping - Chatbots and integrating with social networks APIs - Integrating with cryptocurrency and e-money gatewaysSenior Software Engineers
WordPressPythonPHPSQLJavaScriptVue.jsYiiAPI IntegrationLaravelPSD to HTMLBot DevelopmentAutoitShopifyXenForoAutomation - $60 hourly
- 4.8/5
- (22 jobs)
I have over 25 years of experience writing software and administering databases. I am a PHP web developer with experience in Laravel, CodeIgniter, CakePHP, core PHP, and some Vue.js. I prefer to use an MVC pattern as provided by a good framework such as Laravel or CakePHP, but can also work with older PHP applications. I design and maintain databases in MySQL, PostgreSQL, and SQL Lite. I started as a PHP developer using the CakePHP 2 framework; this is where I first learned the MVC pattern, where manipulating, presenting, and controlling data is abstracted out. I then added SASS, to make CSS easier to write and maintain. For the user interface, I use bootstrap or the tailwind responsive framework along with jQuery or Vue. For non-Vue applications, I can use Smarty for view templates, but am also well-versed in using Blade, CakePHP, and CodeIgniter templates. I prefer to use Laravel for most projects; it provides better overall functionality than other frameworks and a superb ORM. I have recently started using Vue in projects via an open-source project called Inertia.js. Inertia bridges the gap between Vue and Laravel. This gives the best of both worlds where you get the power of Laravel on the back-end and the modern, sleek feeling of Vue on the front-end where your customers interact with the system. I started life after college (1998) as a Microsoft Visual C++ developer with some Visual Basic. In that role, I developed applications for law enforcement, 911 centers, jails, retail businesses, nursing homes, and trucking companies. I then moved into the .NET Framework in 2001. I set out to learn C# and have since developed many object-oriented and tiered client/server applications. These include applications for GIS mapping systems and some data mining and sharing initiatives. I have created custom TCP/UDP servers and clients for low-bandwidth mobile applications. I have worked with O/R mappers such as LLBLGen Pro and became accustomed to using entities in data layers rather than reading/writing data directly. My first database was Access 95 (yes, I know). From there, I moved into SQL Server 7.0, where I designed and maintained many databases. Database concepts such as normalization/denormalization, primary/foreign keys, and check/default constraints are not new to me. Whether it be T-SQL, PL/SQL, or MySQL, I am proficient with database programmability, such as triggers, procedures, functions, and views. File organization and usage, backup and maintenance, and database efficiency are also strengths. I currently primarily use MySQL, where available and PostgreSQL where it is not. Other databases include SQLite and Oracle. I have used a number of servers for hosting my web applications. I prefer either Ubuntu or CentOS running nginx and php-fpm with MySQL for the database. With the right configuration, this simply offers the best performance. I am proficient in the use of source control systems such as Git, Mercurial, SVN, Vault, and SourceSafe. Git really is the best choice here but Mercurial comes in at a close second. During the past two decades, I have created and maintained custom line-of-business applications, with a focus during the past ten years on web applications. I feel that I can be an added asset to your organization, even if it is only for the short-term. I've done a mix of short projects, several-month projects, and long-term engagements lasting a year or more. Preferences/Specialize In Web Applications/Services Records Management/Business Applications/CRMs Database Design/Administration Back-end Work API Programming Integration of Systems Data Mining/Conversion Programming Languages PHP C# VB.NET C++ Databases MySQL PostgreSQL SQLite SQL Server Oracle Database Access Web CakePHP CodeIgniter Laravel node/npm HTML5 CSS3 Bootstrap Tailwind Smarty Blade SASS JavaScript jQuery Vue.js Inertia.js REST JSON XML Regular Expressions Concepts Model-View-Controller Object-Oriented Programming n-Tier Architecture Service-Oriented Architecture Normalization/De-normalization Primary/Foreign/Unique Keys Check/Default Constraints Database Programmability Tools Visual Studio SQL Management Studio PhpStorm DataGrip LLBLGen Pro VMWare Microsoft Office Libre Office TextMate DbVisualizer Active Reports Crystal Reports Iron Speed CodeOnTime Source Control Git Mercurial SVN SourceSafe SourceGear Vault Web Browsers FireFox Chrome Safari Internet Explorer/Edge Operating Systems/Servers macOS Windows Ubuntu CentOS nginx apache php-fpm Payment Processors WePay PaySimple authorize.net Forte StripeSenior Software Engineers
SmartyPHPYiiCakePHPMicrosoft SQL Server ProgrammingObject-Oriented DesignVisual BasicC#MySQLMicrosoft Visual C++ - $25 hourly
- 4.8/5
- (48 jobs)
Hi, my name is Nikita Miroshnichenko (or just Nik). I believe my strong points are my creativeness, punctuality and honesty. I like to communitcate with my clients, so that I can have a clear understanding of his/her needs and understand their vision of the project. Have extensive experience with Wordpress development, CSS, HTML, PHP, MySQL. I am ready to work on any of the following tasks: - Wordpress Theme Development and Customization - Speed Optimization - DIVI and Visual composer development and Customization - PHP Development - PSD to HTML, WordPress - HTML to WordPress - Responsive Design customization - Custom Web Forms - Social API - Facebook API, Twitter API, Instagram API, Pinterest API, Google Maps API - CSS and jQuery tricks Feel free to contact me at any convenient time for you.Senior Software Engineers
Web DevelopmentWebsiteHTMLHTML5WordPressPHPCSS 3 - $35 hourly
- 5.0/5
- (29 jobs)
Creating reliable web and mobile apps with love and dedication. Instruments most used: Laravel, Vue.js, OctoberCMS.Senior Software Engineers
Test-Driven DevelopmentOctober CMSAmazon S3Mobile App DevelopmentJavaScriptVue.jsPHPLaravel - $25 hourly
- 4.9/5
- (31 jobs)
I am a PHP/Mysql/GoHighLevel Developer. I am having more than 5 years of experince working with various websites including Konnektive CRM, limelight CRM. I have worked on various projects and have implemented konnektive crm and Limelight crm API, SMS APIs With TWILIO, Email Responders like Active Campaign, Klaviyo, Shipstation Fullfillment, clickfunnel, has-offers. Also implemented paypal with konnektive crm and Limelight CRM projects. Having vast experince working with sites needed for bank approval.Senior Software Engineers
MySQL ProgrammingAPI IntegrationPHP Want to browse more freelancers?
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Rates charged by Senior Software Engineers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Senior Software Engineer on Upwork?
As the world’s work marketplace, we connect highly-skilled freelance Senior Software Engineers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Senior Software Engineer team you need to succeed.
Can I hire a Senior Software Engineer within 24 hours on Upwork?
Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Senior Software Engineer proposals within 24 hours of posting a job description.