Available for work
Hi, I'mSoumik Sarkar.
I build
Full-stack developer specializing in Next.js, Node.js, and AI/LLM engineering. Building products at the intersection of web and artificial intelligence.
3+
Years Experience
15+
Projects Shipped
4
Companies
12+
Technologies
SCROLL
01. AboutBuilding at the intersection of
Building at the intersection of
web & artificial intelligence.
Full-stack developer from Bangladesh with a passion for scalable, high-performance applications and cutting-edge AI integration.
I specialize in building end-to-end web applications with modern JavaScript frameworks and integrating AI capabilities into production systems. From e-learning platforms to marketplace solutions, I focus on performance and user experience.
I've led engineering teams, managed CI/CD pipelines, built internal MCP tools, and collaborated closely with CTOs on key product decisions across companies in Singapore, Canada, and the US.
When not coding, I'm exploring new AI models, contributing to open-source, and sharing knowledge with the developer community.
📍Sylhet, Bangladesh
📧ratulsarkar216@gmail.com
Full Stack Development
End-to-end web applications with Next.js, React, Node.js, and modern databases.
Next.jsReactNode.jsTypeScript
AI/LLM Engineering
RAG systems, vector databases, LangChain integrations, and MCP server development.
LangChainRAGVector DBMCP
Cloud & DevOps
Scalable infrastructure with AWS, Azure, Docker, and CI/CD automation.
AWSAzureDockerCI/CD
Performance Engineering
API optimization, database tuning, and high-traffic system architecture.
RedisBullMQPrismaPostgreSQL
43%
DB Reduction
Optimized storage with rrule.js scheduling
50%
Faster Load
SSR & code-splitting improvements
30%
Cost Saved
AWS serverless infrastructure
25%
More Engagement
Push notifications & UX redesign
02. Skills
Technologies I work with.
A toolkit spanning frontend to AI/ML, refined across 4+ years and 15+ production projects.
Full Stack
21+technologies
End-to-end application development with modern JavaScript ecosystem.
AI & LLM
6+AI tools
RAG pipelines, vector search, MCP servers, and multi-model orchestration.
Infrastructure
8+platforms
Cloud architecture, containerization, CI/CD, and serverless deployments.
JavaScript
TypeScript
Node.js
Next.js
React
Redux / RTK
Tailwind CSS
Express.js
NestJS
GSAP
Framer Motion
JavaScript
TypeScript
Node.js
Next.js
React
Redux / RTK
Tailwind CSS
Express.js
NestJS
GSAP
Framer Motion
MongoDB
PostgreSQL
Redis
MySQL
Prisma
Mongoose
Socket.io
BullMQ
Stripe
Jest
REST APIs
MongoDB
PostgreSQL
Redis
MySQL
Prisma
Mongoose
Socket.io
BullMQ
Stripe
Jest
REST APIs
AWS
Azure
Docker
GitHub Actions
AWS Lambda
S3
EC2
API Gateway
AWS SES
CI/CD
Vercel
AWS
Azure
Docker
GitHub Actions
AWS Lambda
S3
EC2
API Gateway
AWS SES
CI/CD
Vercel
LangChain
RAG Systems
MCP Server
TensorFlow
Vector DB
Qdrant
Google Gemini
Mistral AI
Hugging Face
OpenAI
LangChain
RAG Systems
MCP Server
TensorFlow
Vector DB
Qdrant
Google Gemini
Mistral AI
Hugging Face
OpenAI
03. Experience
Where I've worked.
Professional experience spanning startups across Singapore, Canada, and the United States.
Software Engineer II @ SJ Innovation LLC
Sylhet, BangladeshNov 2025 — PresentFull-time
Developed AI-powered voice call systems and architected comprehensive EHR/EMR integration solutions for USA-based healthcare systems.
Key Achievements
- Built AI-powered voice call agent system using 11lab (ElevenLabs) and Twilio for automated customer interactions with high-quality voice synthesis
- Architected EHR Medibill Online project with HL7 FHIR R4 and HL7 v2 ADT standards, including canonical relational database schema, patient matching with multiple identifiers, and normalized search fields
- Implemented FHIR Coverage and HL7 v2 IN1/IN2/IN3 mapping for insurance/billing workflows, supporting Commercial/Medicare/Medicaid with comprehensive US EMR integration data models
- Developed nexHealth synchronizer implementation for seamless data synchronization between healthcare systems
- Created audit, provenance tracking, and idempotency systems with source system identification, message ID tracking, version control, and synchronization capabilities for reliable EMR data exchange
Stack
11labTwilioHL7FHIREMRHealthcarePostgreSQLNestJS
04. Work
Featured projects.
Production systems I've built — from AI-powered platforms to enterprise SaaS.
05. Contact
Let's build something together.
Currently open to new opportunities. Whether you have a project in mind or just want to connect, I'd love to hear from you.
Location
Sylhet, Bangladesh