Open to Senior Remote Contracts

Sirin Kolasseri
AI Engineer &
Full-Stack Architect

I build production AI systems — Agentic AI backends, multi-LLM routing, MCP architectures — and ship full-stack platforms that scale. 15+ years delivering for US & EU clients.

View My Work Get in Touch
15+
Years Experience
10+
US / EU Clients
50+
Open Source Projects
2
Live AI Platforms
Expertise

Skills & Tech Stack

Deep expertise across the full AI + full-stack spectrum — from LLM orchestration to production infrastructure.

AI Engineering
LLM / GenAI Agentic AI MCP OpenAI API Claude API Ollama FastAPI STT / TTS PyTorch Machine Learning Python Scikit-Learn VectorDB RAG FalkorDB
Backend
Golang Node.js Python / FastAPI REST API GraphQL Microservices MongoDB MySQL Redis PostgreSQL Kafka RabbitMQ JWT / OAuth2 gRPC
Frontend
React.js Next.js Vue.js Angular React Native Tailwind CSS Bootstrap Recharts Vite TypeScript
Infrastructure & DevOps
AWS / EC2 Docker Kubernetes Nginx CI/CD GitLab GitHub Actions SSL / HTTPS Vercel Lambda DynamoDB Selenium / TDD
Work

Featured Projects

Production systems built from zero — not tutorials or side projects.

AI Business Chat Bot
May 2022 – Present
AI / LLM Live Open Source

A production-deployed, full-stack AI chatbot platform for business intelligence — real-time conversational AI, hands-free voice conversation, a 25+ chart analytics dashboard, and 27 ML-powered BI reports with PDF/CSV export. Multi-LLM, multi-language, deployable on-premise or cloud.

Talk mode — sub-500ms voice via OpenAI Realtime API + WebSocket
Multi-LLM routing: Claude / GPT-4o / Groq / Cerebras / Ollama / llama.cpp
25+ analytics charts — RFM, LSTM churn, CLV, cohort, AR aging, EOQ
27 ML-powered BI reports — OLS forecasting, FP-Growth, MLP bad-debt
MCP Tool Architecture — plugs into Claude Desktop, n8n, ChatGPT
FalkorDB knowledge graph + OpenViking semantic memory (~85% token reduction)
Multilingual STT/TTS — English, Arabic, Malayalam, Hindi, Bengali, Urdu
SSE streaming with step-by-step execution visibility
PythonFastAPI React.jsVite OpenAI Realtime APIClaude API GroqOllama FalkorDBfaster-whisper ElevenLabsMCP SSEWebSocket AWS EC2Recharts
▶ Live Demo 🌐 Website
StartPOS — AI-Powered POS & ERP
Jan 2022 – Present
AI / ML Live Open Source

Open-source Point of Sale & ERP system for the Saudi Arabian market with a full AI layer — ask your business anything in plain English or Arabic and get instant answers, live charts, and forecasts. ZATCA Phase 1 & 2 certified for Saudi e-invoicing (Fatoora).

50+ analytics charts + 33 ML-powered BI reports
ZATCA Phase 1, 2 & B2B certified — ECDSA-signed invoices
6-month revenue/expense/profit forecasting with confidence intervals
Customer RFM segmentation, LSTM churn risk, CLV prediction
WhatsApp invoice delivery via Evolution API
Full double-entry accounting · multi-store · multi-warehouse
MCP integration — Claude Desktop, ChatGPT, n8n compatible
Voice mode with multilingual STT/TTS
GolangPython FastAPIReact.js MongoDBRedis Claude APIGPT-4o GroqOllama FalkorDBMCP Bootstrap 5JWT AWS EC2
▶ Live Demo 🌐 Website ⌥ GitHub (Backend) ⌥ GitHub (Frontend)

More Projects

Wolfpack
Nov 2023 – Jan 2024 · Denmark
Denmark's easiest expense-sharing app — available on iOS & Android.
Spring Boot · PostgreSQL · Angular 14 · React Native
Sunburst
Nov 2021 – Oct 2023
Aircraft Maintenance Management System.
Golang · GraphQL · MSSql · Vue.js · Redis · Docker
Pantacor Platform
Nov 2018 – Sep 2020 · London, UK
Linux firmware sharing & deployment platform for IoT devices at scale.
Golang · MongoDB · GraphQL · Kubernetes · Kafka
Haikujam
May 2015 – Oct 2016 · London, UK
Collaborative haiku-writing mobile app with real-time social features.
Yii2 · Node.js · Angular · MySQL · Redis · AWS
Staff Allocation Solution
2013 · Florida, USA (2amigos)
Staff utilization & profitability tracking platform.
Yii1 · Node.js · MySQL · Redis · TDD
Engineering Doc Control System
2014–2015 · Kazakhstan
Document control system for construction companies.
Yii2 · Node.js · Angular · MySQL
Career

Work Experience

13 roles across US, EU, GCC, UK, and India — predominantly remote since 2013.

Technology Consultant Startup Tech. Consultancy LTD Remote Feb 2024 – Present · London, UK
Golang · React.js · Python · FastAPI · LLM · GenAI · Agentic AI · MCP · Ollama · AWS
Full Stack Developer N30 Aps Remote Nov 2021 – Jan 2024 · Copenhagen, Denmark
Golang · Node.js · MongoDB · MSSQL · Vue.js · React.js · AWS
Technology Consultant Startup Tech. Consultancy LTD Remote Aug 2021 – Oct 2021 · London, UK
Golang · Node.js · MongoDB · Vue.js · React.js · AWS
Technology Consultant 2amigos Remote May 2021 – Jul 2021 · Florida, USA
PHP · Yii2 · MySQL · MongoDB · Vue.js · React.js · AWS
Sr. Software Engineer Pantacor Remote Nov 2018 – Sep 2020 · London, UK
GoLang · GraphQL · MySQL · MongoDB · Kubernetes · Kafka · Docker
CTO Nintriva Jan 2017 – Oct 2018 · Kochi, India
GoLang · GraphQL · PHP · Yii2 · MySQL · MongoDB · AWS
Lead Web Engineer Haikujam Remote May 2015 – Oct 2016 · London, UK
PHP · Yii2 · Node.js · MySQL · MongoDB · Redis · AWS
Technology Consultant 2amigos Remote Mar 2013 – Aug 2013 · Florida, USA
PHP · Yii1 · Node.js · MySQL · MongoDB · Redis
Social Proof

What Clients Say

LinkedIn recommendations from clients across Denmark, UK, USA, Spain, and Australia. View on LinkedIn →

"Sirin is a very skilled and experienced Senior Full Stack Engineer with a great grasp of architecture patterns such as Micro Services. Sirin's delivery mindset is also exceptional."
Co-Founder & CEO · N3O Aps, Denmark
"During Sirin's time at Pantacor he excelled in tackling new problems and finding quick but clean solutions, as well as innovative architecture ideas for our fast growing backend infrastructure."
Co-Founder & CEO · Pantacor Ltd, UK
"Sirin is a rare find — someone who really cares about work and customers. Trust Sirin to make things happen!"
Sr. Software Dev Manager · Amazon, USA
"Sirin is an excellent developer — his team offers top-quality software development covering a wide range of languages & frameworks. Responsive & personable."
VC Investor & COO · COPRESENCE, London
"Sirin has repeatedly proven to be a reliable coworker. He has always been available, effective and fast when solving problems."
Embedded Software Engineer · Pantacor, Spain
"Sirin and his team are great to work with — they produce the goods and deliver the software on time and in line with the client's expectations."
Superintendent · Water Corporation, Australia
Open Source

Open Source Contributions

Yii framework extensions used by thousands of developers worldwide.

pos-rest
Full-stack AI-powered POS & ERP backend in Golang
reactjs-pos
React.js frontend for StartPOS
Yii Bitcoin Extension
Bitcoin / Coinbase API integration for Yii
Yii Braintree
Braintree payment integration for Yii
EasyPaypal
PayPal Express checkout for Yii
Golang Microservice Boilerplate
Production-ready Go microservice with OAuth2, MongoDB, Redis
Let's Work Together

Available for Senior Remote Contracts

Golang · Python · AI/LLM · React.js · Full-Stack · Architecture
EU · US · Middle East · India · Asia-Pacific · Immediate start
GMT, CET, GST, IST, PST timezone coverage available

✉ sirinibin2006@gmail.com in LinkedIn ⌥ GitHub ▶ AI Demo