Hire the best JavaScript Developers in Alameda, CA

Check out JavaScript Developers in Alameda, CA with the skills you need for your next job.
Clients rate JavaScript developers
Rating is 4.8 out of 5.
4.8/5
based on 2,042 client reviews
  • $75 hourly
    I have expert knowledge of JavaScript, TypeScript, React, HTML5 & CSS3. I have specialized in JavaScript over the last decade, and my accomplishments run the gamut from flashy portfolio sites to robust single-page applications using current best practices for front-end development. I have extensive experience developing for Ruby on Rails, Node.js with Express & Next.js. I have worked with databases including MySQL, PostgreSQL & MongoDB and have recently adopted Prisma as my JavaScript ORM of choice. I am adept at designing and consuming various styles of APIs, including REST & GraphQL. I am passionate about doing the best possible work, and I code using the most modern technologies available. I am a very strong communicator and can discuss requirements with technical or non-technical team members with equal facility. I pursue test-driven development and am especially fond of React Testing Library.
    Featured Skill JavaScript
    Node.js
    HTML5
    CSS 3
    React
  • $99 hourly
    Expert Twilio & AI Conversational Solutions Developer | Top 1% Expert-Vetted Talent AI Communication Solutions Architect specializing in Twilio integrations and conversational AI tools that transform customer interactions. As an Expert-Vetted Talent (top 1% on Upwork), I help businesses implement intelligent communication systems that deliver measurable results. I combine deep technical expertise with strategic consulting to create solutions that solve real business problems. My Expertise: Twilio Development & Integration Specialist - Full-stack Twilio platform development with 7+ years of experience - Custom SMS, voice, and messaging workflows that scale with your business - Integration of Twilio services with existing business systems and CRMs AI Conversational Tool Development - Custom chatbots, SMS bots, and voice assistants powered by ChatGPT and other LLMs - Multi-channel AI solutions (phone, SMS, WhatsApp, Facebook Messenger, live chat) - Intelligent IVR systems that improve customer experience and operational efficiency Strategic Communication Consultant - Process analysis to identify automation opportunities - ROI-focused solutions that deliver measurable business impact - Clear roadmaps for implementing AI communication strategies Results I've Delivered: - Developed a custom missed call Slack app that reduced agent response time from 30+ minutes to under 3 minutes, improving customer satisfaction and sales conversion - Created custom screen pop tools for Five9 that decreased call handling time by 6 seconds per call and reduced agent training by 4 hours per client - Built React components and plugins for custom call-center dashboards that streamlined agent workflows - Implemented multi-channel messaging flows with AI integration that provide 24/7 customer support Technology Stack: Twilio, ChatGPT (OpenAI API), Claude API, Ruby, JavaScript, React, Node.js, Bootstrap, WhatsApp Business API, Facebook Messenger API, Slack API, Airtable API, Monday.com API, Pipedrive API, Make.com API, Zapier API, Hubspot API, and more. I bring both technical expertise and business acumen to every project. Whether you need implementation support or strategic consulting on your communication systems, I'm here to help you leverage AI and cloud communication platforms to achieve your business goals. Let's discuss how we can transform your customer interactions.
    Featured Skill JavaScript
    OpenAI Codex
    Azure OpenAI Service
    ChatGPT
    Twilio
    Product Roadmap
    Product Management
    Product Launch
    Product Strategy
    Chatbot
    Twilio API
    Chat & Messaging Software
    IVR Software
    React
    API Integration
  • $100 hourly
    Programming for about 20 years at this point. I've worked on many AI projects including LlamaPress, Procurement Sciences. I was a CTO for 4 years at a bay area start up. I worked at Cisco Webex as a senior engineer Programming Languages: Python, C#, Javascript, Java, C, Ruby, Typescript, php, Objective-C, Swift Frameworks and Libraries: Django, Django Rest Framework, React, Flask, Angular, Node.js, GraphQL, jQuery Storage: PostgreSQL, MySQL, Redis, ElasticSearch, MSSQL, SQLite, Parse Development Tools: AWS, DigitalOcean, Docker, Kubernetes, Gitlab, Git, Jenkins, XCode, Ubuntu Integrations: Stripe, Stripe Connect, Google OAuth, Microsoft OAuth, GoodData SSO. Server: Ubuntu/Linux AI: Langraph, LlamaIndex, Langchain, Arize, Weaviate, RAG, Agentic Systems.
    Featured Skill JavaScript
    Stripe
    RESTful API
    Django
    MySQL
    C#
    .NET Framework
    PostgreSQL
    TypeScript
    Bootstrap
    Python
    SQL
    React
    Node.js
    Flask
  • $70 hourly
    Your technical projects need more than just code—they require someone who understands your business objectives and delivers solutions that work. My background includes Stanford engineering credentials and NeurIPS 2024 publication, offering clients proven expertise in AI systems engineered for measurable business impact. I frequently work with new technologies depending on the task at hand and adapt quickly to your specific needs rather than limiting solutions to rigid frameworks. This adaptability has directly contributed to client success—in one case, I built an MVP and presented it directly to investors, helping a startup client secure a vital funding round. What sets successful technical projects apart is understanding the business challenges first, then applying the right technical approach. Unlike many developers, I prioritize clear communication and social skills alongside technical expertise. You'll find working with me refreshingly straightforward as I aim to make the experience as hands-off as possible for you, handling the technical complexity while keeping you informed without overwhelming you. Let's discuss how to bring your vision to life efficiently and without unnecessary complications.
    Featured Skill JavaScript
    C++
    TensorFlow
    PyTorch
    Web Scraping
    iOS Development
    Blockchain Development
    AWS Application
    Web Development
    React
    REST API
    Natural Language Processing
    Machine Learning
    Python
    Artificial Intelligence
  • $50 hourly
    I craft seamless, responsive, and intuitive mobile experiences Hey there! I'm a skilled Software Engineer specializing in mobile app development. I have expertise in React Native, allowing me to build high-quality apps for both iOS and Android. Additionally, I have experience in iOS development with Swift, providing flexibility to create native iOS applications. I pride myself on being a team player who values clear communication and collaboration. I'm patient, detail-oriented, and determined to deliver exceptional results, no matter the complexity of the task. Let’s grab a coffee and get together to bring your mobile app ideas to life.
    Featured Skill JavaScript
    GitHub
    TypeScript
    Adobe Creative Suite
    Figma
    React Native
    Web Application
    App Development
    iOS Development
  • $80 hourly
    I’m a Full-Stack Engineer with 10+ years of experience building everything from internal enterprise tools to public-facing apps and APIs. My background spans both frontend-heavy interfaces and backend systems, with a strong focus on .NET, JavaScript frameworks, and clean architecture. I’ve also built and maintained production-grade Rails apps, especially for internal tooling and API backends. What I Do Best: ✔ Frontend Development – React, Angular, Chakra UI, custom component systems, pixel-accurate UI builds ✔ Backend Development – ASP.NET Core, Ruby on Rails, NestJS, C#, PostgreSQL, SQL Server ✔ API Design – RESTful APIs, authentication/authorization flows, Swagger/OpenAPI docs ✔ System Design – Clean architecture, modular monoliths, scalable microservices ✔ DevOps & CI/CD – GitHub Actions, Docker, environment setup, deployment pipelines ✔ Performance & Debugging – Query tuning, memory profiling, async logic, logs you can actually read ✔ AI Integration – GPT-based chatbot integration, stream-based token responses, real-time UI updates I’ve worked closely with both product teams and backend-heavy stacks. I care about shipping code that’s clean, testable, and easy to build on later — not just “it works on my machine.” If you’re building something serious — whether it’s a chatbot UI, a web dashboard, or a business app with complex logic — I can help bring it to life.
    Featured Skill JavaScript
    Unit Testing
    Agile CRM
    Ruby on Rails
    Git
    REST API
    NestJS
    SQL
    Node.js
    Angular
    React
    ASP.NET
    .NET Core
    C#
  • $60 hourly
    I'm a software engineer with a background in game development, app development and cross platform SDK development.
    Featured Skill JavaScript
    Graphics Programming
    WebKit
    CSS
    HTML
    Node.js
    iOS Development
    Android App Development
    Mac OS App Development
    Kotlin
    Java
    C++
    Software Development
    Desktop Application
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