Hire the Best Gatsby Developers in California

Over the past decade, I've had the privilege of teaming up with businesses of all shapes and sizes, helping them carve out their digital footprint in the ever-evolving online world. Whether starting from scratch or fine-tuning existing setups, I ensure every project is up to date with modern tooling, practices, and workflows. I combine customer-focused design with unrivaled development knowledge with technical expertise and know-how to create unrivaled excellence for new and established brands. Some brands and companies I've worked with — Miramax, The Kardashians, Blind Barber, The NoMad Hotel, and many more.

Self-motivated systems engineer with years of experience in Unix/Linux systems admin. Strong troubleshooting skills and fluid communication from start to finish. Positive track record of delivering creative and efficient solutions in a cost effective manner. I have extensive experience with Google's Cloud Platform as well as Amazon's AWS EC2 and Lightsail platforms, and have helped dozens of clients migrate their web sites and applications into the cloud, as well as installing a wide variety of on-premises, self-hosted solutions on Linux servers. These solutions include: -Mautic Marketing Automation -NextCloud and OwnCloud Fileshare & Collaboration Suites -Jitsi Meet Video Conferencing -OpenVPN and Wireguard VPN protocols for Secure Remote Access -Mattermost (Slack replacing) Team Collaboration & Messaging -Odoo CRM -SuiteCRM And more I am also a Web Developer, with several years of experience building custom Blogs, Company websites, eCommerce Stores, Landing Pages and more using WordPress and ReactJs/GatsbyJS, as well as using builder platforms such as Squarespace and Wix. I look forward to learning more about your project and how I can help you achieve your goals in the most efficient and cost efficient manner. Thanks, Salem A. Mackintosh

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.

Frontend developer with 9 years building high-performance web applications and implementing A/B testing solutions for conversion optimization agencies. Core expertise: - JavaScript/jQuery/ReactJS - A/B testing implementation (VWO, Optimizely, Google Optimize) - Translating Figma designs into pixel-perfect, responsive UIs - Performance optimization and accessibility standards I specialize in fast turnaround times for landing pages, UI components, and test variations. My 100% Job Success Score across 127+ projects reflects my commitment to quality and clear communication. Available for ongoing retainer work or project-based engagements.

I build AI-enabled web applications, LLM workflows, RAG systems, and automation tools for businesses that need practical AI implementation connected to real products, data, APIs, and users. I am an applied AI engineer and software architect with deep experience in full-stack product development, enterprise architecture, systems integration, and technical leadership. My strength is not just calling an AI API; it is designing and building maintainable software systems where AI capabilities fit the actual business process. I can help you build: • AI-enabled SaaS features and internal tools • LLM-powered chat, assistant, and workflow applications • RAG systems and document-grounded generation • Tool-calling agents and human-in-the-loop review flows • AI automation connected to APIs, databases, and business systems • Dashboards for AI agents, workflow state, approvals, and traceability • Evaluation workflows, structured outputs, and quality checks • Full-stack AI applications using Next.js, TypeScript, Python, Supabase, PostgreSQL, Vercel, AWS, OpenAI, Anthropic, and related tooling Recent AI-related work includes: • Production AI-enabled marketing SaaS using OpenAI, React, GraphQL, Node, AWS, social media APIs, email marketing APIs, billing integration, staging/production environments, and human review workflows. • AI agent dashboards using Next.js, TypeScript, Supabase, OpenAI, Vercel AI SDK, durable workflow patterns, tool-calling agents, and persistent chat history. • RAG-style biography workflow application using Next.js, Supabase, OpenAI, retrieved reference material, structured generation, and approval/disapproval routing. • Weekend planning agent using Claude, tool calling, streamed responses, weather, search, routing APIs, and live agent trace display. • MCP Web Reader server that fetches web pages and returns clean Markdown using the Model Context Protocol SDK, Puppeteer, Mozilla Readability, and Turndown. • Computer vision and deep learning work using Python, PyTorch, OpenCV, EfficientNet-B2, ResNet50, TensorBoard, dataset curation, validation macro F1, checkpointing, and inference pipelines. My background also includes senior full-stack and enterprise architecture work across React, Next.js, TypeScript, GraphQL, Node.js, PostgreSQL, AWS, Vercel, API architecture, authentication, integration patterns, testing, deployment, and maintainable application design. I am not a frontier AI researcher, and I do not present experiments as production deployments. I focus on applied AI engineering: building systems that are useful, testable, maintainable, and aligned with real workflows. If you need a senior engineer who can design the architecture, build the application, integrate AI capabilities, and think through reliability, maintainability, and business process fit, I can help.

Professional backend developer using Java, Kotlin, Python, and C#. Hosted services on AWS and Azure. Has designed and setup APIs. Develops and programs videogames as a hobby.