Hello

Amar Kumar Thakur

AI, Frontend & Mobile Engineer

Building AI, frontend, and mobile applications. Next.js, React Native, TypeScript, and LLM/RAG systems. Founding Engineer at FREMN — crafting production AI features, web interfaces, and cross-platform mobile apps for healthcare SaaS. Open to AI, frontend, and mobile engineering opportunities.

Available for work

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Terminal Portfolio

Run this if you wanna see my portfolio in the terminal.

$npx amar-cli

01 / About

AI FullStack & Application Engineer

Turning curiosity into
Software.

Full-Stack AI Engineer focused on building production-grade applications — from responsive web UIs to native mobile apps with intelligent AI features. I work with Next.js, React Native, TypeScript, and LLM pipelines, prioritizing clean architecture, performance, and rapid iteration.

50+Concurrent users supported

85%RAG pipeline accuracy

40%Bandwidth reduction

Peer code reviewsEvery change reviewed — two-engineer team at FREMN, review habit from client work.

CI/CD deliveryActive contributors ship through automated pipelines on collaborative builds.

Solo end-to-end ownershipDesigned, built, and shipped CleoCode and SoapBoard alone.

02 / Experience

2025 – Present

Current

Remote

Founding Engineer

FREMN

Co-building AI-driven SaaS products with a 4-person team (2 engineers) — from architecture to deployment.

2 of 4

Engineers on a 4-person team — co-owning architecture, builds, and releases end to end.

0→1

MVPs taken from concept to production deployment, including design, development, and iteration.

E2E

Shared product strategy and core feature implementation with peer code reviews on every change.

Aug 2026 – Present

Current

Kolkata, West Bengal

Incubatee — FREMN

AIC Techno

Selected for the inaugural cohort of the AIC Techno Incubation Program — West Bengal's first Atal Incubation Centre.

Access

Co-working infrastructure, tailored mentorship from industry leaders, and investor connects.

Support

Comprehensive fundraising support and strategic guidance for scaling FREMN's AI and healthcare SaaS offerings.

Network

Built connections within West Bengal's startup ecosystem and gained exposure to growth best practices.

May 2025 – May 2026

Completed

Rampurhat, West Bengal

Software Development Intern

Yolopment IT Solution

Collaborating with a cross-functional team to implement and test features for internal and client-facing modules.

20%

Reduction in feature delivery time across 8+ application features with a 5-person team.

15%

Improvement in dev workflow efficiency through debugging, code reviews, and 3 sprint cycles.

95%

Deployment success rate maintained via strict documentation and confidentiality standards.

Aug 2024 – July 2027

B.Tech — Computer Science & Engineering

Techno India University · Kolkata, WB

4th year undergraduate student with focus on AI development and software engineering fundamentals

Aug 2021 – July 2024

Diploma — Computer Science & Engineering

Techno India University · Kolkata, WB

Graduated with focus on full-stack development and software engineering fundamentals

03 / Projects

Co-developedLive

FREMN AI Frontdesk

AI Receptionist for Healthcare Clinics

Co-built · 2 engineers in a team of 4

Production AI receptionist for dental clinics. Automated appointment booking, patient communication, and conversational workflows. RAG pipeline using LangGraph and pgvector for context-aware responses. Multi-tenant architecture with secure knowledge isolation. WhatsApp API integration for patient engagement.

Next.jsTypeScriptConvexClerkLangGraphOpenAI APIspgvectorWhatsApp APISentryAWSTailwind CSS

60–70%Appointment booking and patient communication automated

100+Clinic knowledge bases indexed via RAG pipeline

99.9%Uptime with real-time monitoring via Sentry

Solo BuildOpen SourceLive

CleoCode

Terminal-Native AI Coding CLI

Solo-built · sole engineer

Terminal-native AI coding CLI built with Bun, OpenTUI and React. PLAN vs BUILD modes gate file writes and shell commands, with streaming chat via a self-hosted Hono server and Postgres-backed sessions. Clerk PKCE login from the terminal with Polar credit billing and 6 switchable models.

BunOpenTUIReactTypeScriptHonoPrismaPostgresClerkPolarAnthropic APIOpenAI API

10Slash commands across sessions, models, auth and themes

6Models across Anthropic + OpenAI, default GPT-5.4

7Local workspace tools with PLAN/BUILD mode gating

Co-developedOpen SourceLive

Solvia

AI-Powered Customer Support OS

Co-built · active open-source contributors

Open-source AI-driven support platform for SMEs. Admin dashboard and embedded widget for real-time support. RAG pipeline indexes PDFs and FAQs for context-aware AI responses with human escalation. Active contributors ship through CI/CD.

Next.jsTypeScriptConvexClerkLangGraphOpenAI APIsGeminipgvectorAWSTailwind CSSTurborepo

60–70%Routine queries automated across chat + voice

85%RAG pipeline accuracy over 100+ documents

35%Code duplication reduced via Turborepo monorepo

SaaS ProjectOpen SourceLive

SoapBoard

Real-Time Collaborative Whiteboard

Solo-built · sole engineer

Real-time collaborative whiteboard with multi-user drawing, text, shapes, and live cursor presence. Organization-based multi-tenant SaaS with secure auth and logical data isolation.

Next.jsReactConvexLiveblocksClerkTypeScript

50+Concurrent users with sub-100ms latency

40%Bandwidth reduction via throttled WebSocket updates

10+Organizations on multi-tenant architecture

Mini Projects

3 builds

Drum Kit

Interactive drum machine with sound effects and visual feedback.

Dictionary App

Simple API-based dictionary application with search and translation features.

Terminal Themed Portfolio

A terminal-themed portfolio website built with Next.js and Tailwind CSS.

04 / Skills

Resume

LangGraphLangChainOpenAI APIsRAG SystemsVector EmbeddingsPrompt EngineeringVapiReactNext.jsTypeScriptTailwind CSSHTMLCSSJavaScriptReact NativeExpoDartFlutterPythonFastAPINode.jsExpress.jstRPCREST APIsWebSocketsPrisma ORMInngestLangGraphPostgreSQLNeon PostgrespgvectorMongoDBRedisCloudflare R2ConvexFirebaseSupabaseDockerGitGitHubAWSLinuxSentryTurboRepoClerkLiveblocksWhatsApp APIOpenAIGeminiLangGraphLangChainOpenAI APIsRAG SystemsVector EmbeddingsPrompt EngineeringVapiReactNext.jsTypeScriptTailwind CSSHTMLCSSJavaScriptReact NativeExpoDartFlutterPythonFastAPINode.jsExpress.jstRPCREST APIsWebSocketsPrisma ORMInngestLangGraphPostgreSQLNeon PostgrespgvectorMongoDBRedisCloudflare R2ConvexFirebaseSupabaseDockerGitGitHubAWSLinuxSentryTurboRepoClerkLiveblocksWhatsApp APIOpenAIGemini

AI/LLM systems, full-stack web development, mobile applications & cloud infrastructure.

AI/LLMs

LangGraphLangChainOpenAI APIsRAG SystemsVector EmbeddingsPrompt EngineeringVapi

Frontend

ReactNext.jsTypeScriptTailwind CSSHTMLCSSJavaScript

Mobile

React NativeExpoDartFlutter

Backend

PythonFastAPINode.jsExpress.jstRPCREST APIsWebSocketsPrisma ORMInngestLangGraph

Databases

PostgreSQLNeon PostgrespgvectorMongoDBRedisCloudflare R2ConvexFirebaseSupabase

DevOps & Infrastructure

DockerGitGitHubAWSLinuxSentry

Tools & Platforms

TurboRepoClerkLiveblocksWhatsApp APIOpenAIGemini

05 / Contact

Let's build
something.

Emailkumaramar4880@gmail.com↗Phone+91 9062936687↗LinkedInlinkedin.com/in/amarkt↗GitHubgithub.com/supercell02↗PortfolioPortfolio link↗ResumeSee Resume↗

Available for opportunities