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Vytautas Briauka

Vytautas Briauka

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Rising Codementor
US$10.00
For every 15 mins
ABOUT ME
Senior AI-Powered Full Stack Engineer
Senior AI-Powered Full Stack Engineer

Senior AI-powered Full-Stack Engineer with 8+ years of experience building scalable SaaS platforms, real-time dashboards, and AI-driven applications used by startups and enterprise teams across the UK, EU, and US.

I specialise in React, Next.js, Node.js, and TypeScript, building modern web platforms that are secure, performant, and production-ready. My work spans the entire stack — from designing frontend architectures and APIs to deploying scalable cloud infrastructure on AWS.

Recently, I have focused on AI-enabled products, integrating large language models such as OpenAI and Claude to power automation, document intelligence, and AI-assisted workflows.

Key highlights:

  • Delivered 15+ SaaS platforms and data dashboards for fintech, healthtech, and EdTech startups
  • Built AI-powered features using GPT-4, Claude, LangChain and vector databases
  • Designed cloud architectures achieving 99.9% uptime and <300ms global latency
  • Improved system performance by 40% through caching, database optimisation, and real-time architectures
  • Led infrastructure modernisation using AWS, Docker, and CI/CD pipelines

I enjoy working with startup teams and product-focused companies, helping turn ideas into reliable, scalable software from MVP to production.

London (+00:00)
Joined November 2025
EXPERTISE
Node.js
9 years experience
React
9 years experience
Python
8 years experience
Vue.js
8 years experience
AWS
6 years experience
PostgreSQL
8 years experience
Next.js
8 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE
GitHub
Event-Seating-Map
TypeScript
0
0
BTC-tracking
TypeScript
0
0
EMPLOYMENTS
Senior Full-stack Engineer
Norstella
2023-01-01-Present

Working on large-scale multi-product platforms and infrastructure modernisation initiatives.

Key contributions:

    <l...

Working on large-scale multi-product platforms and infrastructure modernisation initiatives.

Key contributions:

  • Led a large monorepo migration integrating multiple frontend applications into a unified Nx + Next.js architecture, improving code reuse and maintainability.
  • Developed an automated Contentful → KeystoneJS CMS migration tool, reducing manual migration work by 60%.
  • Designed and implemented CI/CD pipelines to streamline deployments and eliminate unnecessary redeployments.
  • Implemented Terraform infrastructure-as-code, enabling scalable cloud infrastructure management.
  • Optimised container infrastructure using AWS Fargate, improving reliability and reducing downtime.
  • Contributed to security posture improvements, infrastructure scalability, and performance optimisation.
  • Provided technical leadership and mentoring within a cross-functional engineering team.
CMS
Terraform
AWS Lambda
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CMS
Terraform
AWS Lambda
Infrastructure as Code
Next.js
CI/CD
Performance Optimization
Nx
Contentful CMS
AI
Multi Product platforms
Security posture management
Monorepo management
Cross Functional program execution
View more
Senior Full-Stack Web Developer
Freelance
2019-01-01-2023-10-01

Delivered full-stack SaaS platforms and AI-driven applications for international startups and product teams.

  • Shipped...

Delivered full-stack SaaS platforms and AI-driven applications for international startups and product teams.

  • Shipped 15+ SaaS platforms and real-time dashboards for fintech, healthtech, and EdTech clients.
  • Built AI features using OpenAI, Claude, LangChain, and vector databases including chat assistants, document intelligence, and automated workflows.
  • Architected Next.js + Supabase + tRPC platforms achieving <300ms global latency and 99.9% uptime.
  • Improved backend performance by 40% using Redis caching, query optimisation, and WebSocket-based real-time updates.
  • Implemented subscription systems using Stripe, Paddle, and Lemon Squeezy with secure webhook integrations.
  • Deployed scalable applications using Vercel, AWS Lambda, and serverless architectures.
Node.js
PostgreSQL
WebSocket
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Node.js
PostgreSQL
WebSocket
TypeScript
Cloudflare
Cache
Database Tuning
GraphQL
AWS Lambda
Next.js
RESTful API
OpenAI
Vercel
Supabase
Langchain
Claude
View more
Full-Stack Developer
BrightLayer Technologies
2016-08-01-2018-12-01

Developed enterprise web applications and API systems.

Key contributions:

  • Built web platforms using React, No...

Developed enterprise web applications and API systems.

Key contributions:

  • Built web platforms using React, Node.js, PostgreSQL and REST APIs.
  • Implemented automated backend workflows using AWS S3 and microservices architecture.
  • Integrated payment infrastructure using Stripe APIs.
  • Improved API performance using Redis caching and database query optimisation.
  • Delivered responsive frontend interfaces using React and Tailwind CSS.
Node.js
PostgreSQL
Amazon S3
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Node.js
PostgreSQL
Amazon S3
Redis
Query Optimization
React
Microservices
Stripe api
RESTful API
Tailwind css
View more
PROJECTS
Event Analytics PlatformView Project
2025
Full-stack event management and analytics platform built with Next.js, Node.js, PostgreSQL, and Stripe. Features include: • Real-time ev...
Full-stack event management and analytics platform built with Next.js, Node.js, PostgreSQL, and Stripe. Features include: • Real-time event analytics dashboards • Secure event creation and participation system • Payment integration for paid events • Responsive UI and admin management tools
Node.js
PostgreSQL
TypeScript
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Node.js
PostgreSQL
TypeScript
Stripe Payments
Jwt
Axios
Next.js
Tailwind css
Framer motion
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AI SaaS Productivity PlatformView Project
2025
AI-powered productivity platform built with Next.js, TypeScript, Firebase, and LLM APIs. Key features: • AI-assisted task planning using...
AI-powered productivity platform built with Next.js, TypeScript, Firebase, and LLM APIs. Key features: • AI-assisted task planning using an energy-matching algorithm • Focus timers and productivity analytics • Collaboration tools and subscription management • Designed specifically for neurodivergent users (ADHD-friendly UX)
Node.js
TypeScript
Firebase
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Node.js
TypeScript
Firebase
Next.js
Firestore
Tailwind css
LLM
Shadcn
Ai/llm apis
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