About Vytautas
I help businesses launch and scale high-performance web applications from AI-powered SaaS platforms to real-time dashboards using Next.js, TypeScript, Node.js, Supabase and AI APIs such as OpenAI and Claude. My work is production-ready, scalable and delivered on time.
🛠️ Core Expertise
Frontend: Next.js (App Router, Server Components), React, Vue 2 & Vue 3 (Options API, Composition API), Tailwind CSS, TypeScript
Backend: Node.js (Fastify/Express), Ruby on Rails, Python (Django, FastAPI), Deno (edge-ready), Laravel
Databases: Supabase, PostgreSQL, MongoDB, Redis, Firebase
AI/LLM Integration: OpenAI, LangChain, Claude, Vercel AI SDK
API Development: REST, tRPC, GraphQL, WebSockets, Stripe
DevOps & Infrastructure: Vercel, AWS (Lambda, S3), Cloudflare Workers, Docker, GitHub Actions
⚙️ What I Deliver
-AI-native SaaS products (chatbots, dashboards, automations)
-Real-time applications (WebSocket + Redis streaming)
-Serverless solutions with edge functions for speed and cost-efficiency
✅ Why Clients Choose Me
-Clean, modular, and scalable code — built quickly and to a high standard
-Clear communication, reliable delivery, and proactive problem-solving
-A product-first approach — I focus on your users, your business, and your goals
Let’s turn your idea into a robust, scalable product 🚀
English
Native or bilingual
Lithuanian
Native or bilingual
Remote only
Primarily works remotely
Experience
- NorstellaSenior Full-stack EngineerJanuary 2023 - Today (3 years and 7 months)• Led a large-scale monorepo migration integrating multiple front ends into a single repository using Nx and Next.js, improving code reuse and maintainability.• Developed a conversion tool that automated Contentful to KeystoneJS CMS migrations, reducing manual effort by 60%.• Architected and implemented CI/CD pipelines, optimizing deployments to prevent unnecessary redeployments and improving developer efficiency.• Configured Terraform from scratch, enabling a scalable infrastructure-as-code approach for the company's multi-product platform.• Enhanced system reliability and scalability by implementing AWS Fargate, optimizing resource allocation, and reducing downtime.• Provided technical leadership for a cross-functional team, guiding architecture decisions and mentoring junior engineers.• Actively contributed to infrastructure improvements, security enhancements, and system performance optimizations.
- FreelanceSenior Full-Stack Developer (AI & SaaS)January 2019 - December 2022 (3 years and 11 months)• Shipped 15+ AI-powered SaaS platforms & real-time dashboards for fintech, healthtech and EdTech clients (UK/EU/US)• Built end-to-end AI features using GPT-4o, Claude 3.5, LangChain and vector DBs (chat assistants, document QA, content generation)• Architected Next.js + Supabase + tRPC apps with <300ms global latency and 99.9% uptime (Vercel Edge + caching)• Improved performance 40-60% via Redis, query optimisation and WebSockets• Integrated Stripe/Paddle/Lemon Squeezy with subscription flows and webhooks
- BrightLayer TechnologiesFull-Stack DeveloperAugust 2016 - December 2018 (2 years and 4 months)Brighton, Brighton and Hove, UK• Developed enterprise-grade web applications with React, Node.js, PostgreSQL, and RESTful APIS• Led backend integrations and automated workflows using AWS S3, Stripe APIs, and microservices• Collaborated with UI/UX teams to deliver responsive, mobile-friendly interfaces using Tailwind CSS
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Education
- Bachelor of ScienceWest Herts College2013Bachelor of Science