Hire the best Backend Rest API Freelancers in San Diego, CA

Check out Backend Rest API Freelancers in San Diego, CA with the skills you need for your next job.
Clients rate Backend Rest API professionals
Rating is 4.7 out of 5.
4.7/5
based on 118 client reviews
  • $75 hourly
    Seasoned software developer with broad experience and skills: • Web application and server development, from proprietary C++ to J2EE to LAMP. • WordPress plugin; Laravel application • Adoption/integration of thirdparty components into applications. • Single page web applications with Javascript; HTML/CSS; Bootstrap, Vue.js • Web site setup and administration. • Porting C++ code from Unix to Windows. Write clean, robust, and well documented code.
    Featured Skill Backend Rest API
    Multithreaded Programming
    Amazon ECS
    Laravel
    OAuth
    RESTful API
    LAMP Stack
    API Development
    Web Development
    WordPress
    C++
    Java
    JavaScript
    PHP
  • $76 hourly
    US-born, native English speaker, based in San Diego, California. I am a Computer Engineer with 20+ years experience in the tech industry writing all sorts of code, everything from Windows Device Drivers (WDM / WDF) to Embedded Android code and RTOS services written in C / C++ to Windows applications in C# and ASP.Net. I love the beauty of software written elegantly. And for the past 7 years I have been working almost exclusively as a Full Stack Web Developer. My current technical skill set is focused on using Laravel / PHP on the back-end and Javascript along with the Vue and Livewire Frameworks on the front-end. I am proficient implementing RESTful web services and working in a microservice architecture. I have integrated Web APIs from a number of providers, comfortable working with data formats like JSON and SOAP. Experience writing SQL queries and creating new database schemas. I have created custom logic and views for multiple commercial websites including: sales / ordering, credit card processing, reporting, lead generation and document management features. I'm good at digging around your old, hard-to-understand code from the developer who's not around anymore and fixing the bug that's been driving you crazy! I'm well-aware of the challenges of working in a large, monolithic code base. Or maybe you need a brand-new, well-written, tight script to implement an endpoint or automate some work? I have a deep understanding of web fundamentals including: TCP/IP, HTTP, Javascript, HTML and CSS. And have a working knowledge of modern front-end Javascript frameworks like React.js and Vue.js. Very comfortable administrating Linux and Windows servers. I can draw from a deep reservoir of industry experience and academic studies of software architecture, data structures and Object Oriented Design patterns. Whether it's Agile / Scrum, TDD, classic waterfall or just hacking away like in the Wild West ... whichever software development methodology you have adopted, my industry experience means I'll be comfortable working with the tools you already use to solve the problems at hand. Excellent written and verbal communication. I also speak Hindi and Spanish fluently. Accomplished, organized and focused on understanding my clients needs and helping their business flourish. New to Upwork but I have many years of experience working in the Software Industry ... from home office start-ups to a few well-established, large corporations and Silicon Valley players. What kinda code do you need help writing?
    Featured Skill Backend Rest API
    MySQL Programming
    RESTful API
    JavaScript
    HTML
    WordPress
    Microservice
    PHP
    CSS
    jQuery
  • $85 hourly
    As a Full Stack Software Engineer, I have extensive experience designing, developing, and maintaining software solutions for a wide range of clients. I am proficient in a variety of programming languages, including JavaScript and Python and I have a strong understanding of software development methodologies and best practices. I have worked on both front-end and back-end development, and have experience with technologies such as Django, Vue.js, and Nuxt.js. I have also used ORM technology to develop software applications that access and manipulate data in a Postgres database. I am a problem-solver by nature and enjoy tackling complex technical challenges. In my current role, I am responsible for the full lifecycle of software development projects, from initial concept through to deployment and support. I am a team player and enjoy working with others to deliver high-quality software solutions.
    Featured Skill Backend Rest API
    Unit Testing
    GUI Design
    Database Design
    Software
    Software Architecture & Design
    Google APIs
    RESTful API
    API Integration
    Vue.js
    JavaScript
    Nuxt.js
    Django
    Python
  • $60 hourly
    I am a developer with over 25 years of experience including the work for the world's top software companies. I am experienced in building websites for small and medium sized businesses. In addition, I am an expert iOS and MacOS developer. I bring to the table a wealth of experience in numerous programming languages, database design, and backend systems. My formal education is in computer science with the focus on computer graphics. Looking forward to hearing from you...
    Featured Skill Backend Rest API
    iOS
    Mac OS App Development
    Graphics Programming
    React
    Web Development
    Scala
    Java
    C#
    C++
    SQL
    Database Design
    .NET Framework
    Python
    RESTful API
    F#
  • $70 hourly
    Hi 👋, I'm Martin - a passionate and skilled software engineering professional offering over 8 years in IT industry with experience in entire software engineering lifecycle. Skilled at designing, developing, optimizing and maintaining systems to solve real-world business problems. A consistent team player. A passionate engineer & thriving analyst specialized in React/Next.js and JavaScript/TypeScript. ✔Skill set: Frontend (React/Next.js, Vue.js, Angular, …) Backend (Ruby, Python/Django, Elixir, Node.js, Golang, ASP.NET, C# …) Database (MySQL, PostgreSQL, MongoDB, Supabase, Firebase, …) Cloud Services (AWS, GCP, Azure, …) Infrastructure (GitHub actions, AWS Code Pipeline, AWS Elastic Beanstalk, Heroku, …) 🏆 My aim is to give my client best possible solution for any situation and provide great service as aspect in the time frame. I am passionate about continuous learning and collaborating with exceptional individuals. Let's create something amazing together! 🤝
    Featured Skill Backend Rest API
    GraphQL
    RESTful API
    Vue.js
    Angular
    Amazon Web Services
    SaaS
    Web Application
    Material UI
    Supabase
    Tailwind CSS
    Node.js
    JavaScript
    TypeScript
    React
    Next.js
  • $30 hourly
    I’m a results-driven Senior Full Stack Developer with a deep passion for programming and solving complex problems. I focus on delivering projects on time and within budget, always ensuring my clients receive peace of mind through reliable solutions. Rather than selling hours, I prioritize efficient, outcome-focused work that meets client needs. Specializing in: Backend Technologies: ✔️ Node.js ✔️ AWS Amplify, DynamoDB, Cognito Serverless development ✔️ .NET Core 2-3 ✔️ PHP / WordPress / Custom Plugins ✔️ Python Frontend: ✔️ React ✔️ Next.js ✔️ Vue.js ✔️ jQuery / HTML5 / CSS / Bootstrap Data: ✔️ SQL ✔️ Postgres ✔️ ElasticSearch ✔️ Firebase Specialties: ✔️ REST API development ✔️ Web/Video Conferencing technologies: WebRTC, WebEx API, Wowza, Agora, OpenVidu ✔️ Twitter/Instagram Automation ✔️ Data Management Dashboards ✔️ JSON Data Manipulation ✔️ .NET Core Entity Framework / Design Patterns / Data Access Layer ✔️ Highcharts / Chart.js ✔️ ETL (Extract Transform Load) for Data Warehouses ✔️ Data Scraping: Selenium, Casper.js, Robot, BeautifulSoup, lxml AI, Machine Learning & LLM Integration: ✔️ Designing and deploying AI solutions using frameworks such as TensorFlow, PyTorch, and Scikit-Learn ✔️ Building and integrating natural language processing (NLP) applications and LLM-powered solutions using models like OpenAI o3-mini-high ✔️ Developing custom chatbots, conversational agents, and automation pipelines leveraging state-of-the-art LLMs ✔️ Implementing AI-driven analytics, predictive modeling, and recommendation systems to transform data into actionable insights
    Featured Skill Backend Rest API
    RESTful API
    MongoDB
    Database Design
    React
    Node.js
    API
    API Development
    SQL
    Python
    Scripting
    Artificial Intelligence
  • $30 hourly
    I focus on delivering reliable, high-quality software solutions on time and within budget. Passionate about programming and problem-solving, I prioritize efficiency and results over hours worked—providing peace of mind to my clients. Backend Technologies: ✔️ .NET Core 2-3 ✔️ Node.js ✔️ Python ✔️ PHP / WordPress / Custom Plugins ✔️ AWS Amplify, DynamoDB, Cognito Serverless development Frontend: ✔️ Next.js ✔️ React ✔️ Vue.js ✔️ jQuery / HTML5 / CSS / Bootstrap Data: ✔️ Postgres ✔️ SQL ✔️ Firebase ✔️ ElasticSearch Specialties: ✔️ REST API development ✔️ Web/Video Conferencing technologies: WebRTC, WebEx API, Wowza, Agora, OpenVidu ✔️ Data Scraping: Selenium, Casper.js, Robot, BeautifulSoup, lxml ✔️ JSON Data Manipulation ✔️ Twitter/Instagram Automation ✔️ Highcharts / Chart.js ✔️ ETL (Extract Transform Load) for Data Warehouses ✔️ .NET Core Entity Framework / Design Patterns / Data Access Layer ✔️ Data Management Dashboards AI, Machine Learning & LLM Integration: ✔️ Designing and deploying AI solutions using frameworks such as TensorFlow, PyTorch, and Scikit-Learn ✔️ Building and integrating natural language processing (NLP) applications and LLM-powered solutions using models like OpenAI o3-mini-high ✔️ Developing custom chatbots, conversational agents, and automation pipelines leveraging state-of-the-art LLMs ✔️ Implementing AI-driven analytics, predictive modeling, and recommendation systems to transform data into actionable insights
    Featured Skill Backend Rest API
    RESTful API
    MongoDB
    JavaScript
    Database Development
    React Native
    API
    Node.js
    API Integration
    API Development
    SQL
    AI Chatbot
    Next.js
    Python
    Scripting
    Artificial Intelligence
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