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Vytautas Briauka

@vytautasbriauka

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Senior full-stack developer specializing in AI integrations and scalable SaaS platforms.

United Kingdom

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What I'm looking for

I want to build production-grade full-stack SaaS with strong AI integrations—shipping reliable, low-latency features on time. I’m looking for a team where architecture, infrastructure, and mentoring matter as much as delivery.

I’m a senior full-stack developer with 9+ years building production-grade, scalable web applications and AI-powered SaaS products. I specialize in shipping revenue-generating MVPs and enterprise platforms on time, including for UK and global startups.

In my current role, I led a large-scale monorepo migration, consolidating multiple front ends into a single repository using Nx and Next.js to improve code reuse and maintainability. I also built an automated Contentful to KeystoneJS CMS migration conversion tool, cutting manual effort by 60%.

I focus heavily on reliable delivery and scalable infrastructure—architecting CI/CD pipelines, configuring Terraform from scratch, and improving system uptime and performance. I enhanced resilience and scalability by implementing AWS Fargate, optimizing resource allocation, and reducing downtime.

I’m equally strong on the AI product side from prior freelance work, where I shipped 15+ AI-powered SaaS platforms and real-time dashboards. I’ve built end-to-end features using GPT-4o, Claude 3.5, LangChain, and vector databases—delivering chat assistants, document QA, and content generation with low latency and high uptime.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-stack Engineer

Current

Norstella

Jan 2023 - Present (3 years 5 months)

Contributed to large-scale platform modernization by leading a full monorepo migration (Nx + Next.js) that consolidated multiple front-end apps into a unified architecture. Built Contentful→KeystoneJS migration tooling (~60% less manual effort), implemented CI/CD pipelines to improve deployment reliability, and introduced Terraform-based infrastructure-as-code to manage scalable AWS environments.

TypeScript Next.js Contentful CMS KeystoneJS AWS Lambda Terraform Docker CI CD Infrastructure as Code

Senior Full-Stack Developer

Freelance

Jan 2019 - Dec 2022 (3 years 11 months)

Shipped 15+ AI-powered SaaS platforms and real-time dashboards for fintech, healthtech, and EdTech clients across the UK/EU/US. Built GPT-4o/Claude-based assistants and document QA using LangChain and vector databases, delivering <300ms global latency and 99.9% uptime.

Next.js Supabase tRPC GPT 4o Claude Lang Chain Vector Databases RAG Stripe Paddle Lemon Squeezy WebSockets

Full-Stack Developer

BrightLayer Technologies

Aug 2016 - Dec 2018 (2 years 4 months)

Built production web applications and APIs, developing frontend with React and Tailwind CSS and backend services with Node.js and PostgreSQL. Integrated Stripe billing and subscriptions, automated workflows with AWS S3, and improved performance using Redis caching and database query optimization.

React Node.js PostgreSQL AWS S3 Redis Microservices Stripe API RESTful APIs Caching Query Optimization NodeJS

Junior Web Developer

PixelWave Solutions

Jun 2014 - Jul 2016 (2 years 1 month)

Developed and maintained web applications and backend systems in an Agile environment. Built Laravel/PHP features including authentication, dashboards, and payment gateway integrations, and delivered responsive HTML/CSS/JavaScript UI components.

HTML CSS3 JavaScript PHP Laravel Authentication Payment Gateway Integration Responsive UI Development Git CI CD

Education

Degrees, certifications, and relevant coursework

West Herts College

Bachelor of Science, Computer Software Engineering

2010 - 2014

Completed a one-year Higher National Certificate (HNC) in Computing focused on software development. Covered programming concepts including Java, JavaScript, HTML/CSS, and database management, with practical group projects and coding challenges.