Hire the Best Gatsby Developers in California

I'm not your typical HubSpot Developer. I coined the term "Full Stack HubSpot Expert" when I realized the need for a resource that could utilize the full power of HubSpot’s powerful ecosystem. Yes, HubSpot was built for marketers, but, your typical marketer doesn’t understand API Integrations or HubL Development, and you’ll have better luck winning the lottery than getting them to deliver something that is both beautiful and converts. This is usually how it goes: Your typical HubSpot “Expert” will promise you Inbound growth and lead generation and lead nurturing services. They’ll probably download a couple templates from the HubSpot marketplace and if you’re lucky they’ll make it match your brand colors. For some people that’s enough, but, businesses that want to maximize their HubSpot setup need more. Getting started with HubSpot can also be a challenge for many growing businesses. Whether you are coming from another CRM or Marketing Automation platform, or you are starting fresh getting started with the right foundation is essential. We live in a technology-driven world and your marketing and sales teams may use a number of different tools that need to speak with your CRM. I'll help you streamline your tech stack while leveraging HubSpot's best in class platform. Let’s talk HubSpot. HubSpot Website Services HubSpot Website Migration (Migrate from WordPress, SquareSpace or any other Platform) HubSpot Website Strategy HubSpot Page Template Design HubSpot Blog Template Design HubSpot Landing Page Template Design HubSpot HubL Development HubSpot Marketing Services Workflows Email Template Design Lead Generation Strategy Search Engine Optimization Lead Nurturing Strategy Blog Content HubSpot CRM Services HubSpot CRM Migration (Salesforce, Agile CRM or any other CRM) HubSpot CRM Training

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.

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.

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.

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.

Working in the start-up and technology space for over 30 years, I have a history of successfully leading software development, AI-powered product launches, and technical strategy initiatives. As a technical executive, I work closely with domain experts, engineers, and stakeholders to drive product vision; as an engineer, I contribute hands-on across the full stack. From a technical standpoint, I work across Node.js, TypeScript, Python, PHP, Bash, Go, and Rust, with experience in cloud-native architectures on AWS, GCP, and Digital Ocean. I build and deploy with Docker, Terraform, and GitHub Actions CI/CD pipelines, and I maintain a self-hosted private infrastructure lab supporting local AI model serving, automated testing, and development workflows. My database experience spans PostgreSQL, MySQL, MongoDB, Redis, Qdrant (vector DB), and more. My extensive AI experience includes context engineering, RAG pipelines (embeddings, vector search, reranking), and agentic coding workflows. I work with LLM providers including OpenAI, Anthropic, Google, Meta, Cerebras, Groq, and DeepSeek, and I build with tools like vLLM, Ollama, LangChain, and PyTorch. I've developed custom MCP servers, AI-assisted development toolchains for Claude Code, Gemini CLI, and Qwen Code, and I maintain an active open-source portfolio including llm-interface (120+ GitHub stars). Recent project work includes a production Rust API for brand voice alignment through stylometric analysis — a ground-up rewrite from Python with ML-based content safety and optional CUDA GPU acceleration. I have a diverse management background, leading teams of various sizes and configurations — on-site, remote, nearshore, and offshore — with Agile and SCRUM methodologies (Certified Scrum Master). Notable accomplishments include: - Co-founded two public companies achieving peak valuations of $600M and $73M - Built data acquisition pipelines including proxy-based web scrapers and reverse-engineered proprietary validation schemas, improving extraction accuracy from 9% to 81% for a major utility client - Founded and ran a technology consultancy for 8 years, delivering enterprise CMS software, a contextual advertising network, and services including SEO, security audits, and custom development - Led and mentored teams ranging from 5 to 24 members across multiple companies, from early-stage startups to growth-stage ventures - Established TDD practices with automated CI/CD across all active projects, backed by dedicated self-hosted infrastructure I am confident I can hit the ground running and immediately become a valuable asset to your project. My experience as both a technical leader and a hands-on contributor means I can operate at whatever level your engagement requires — from architecture and strategy down to shipping code.