Available for Collaboration

I build the AI and the app around it.

Full-stack engineer putting LLM features into real web and mobile apps. I handle the prompt, the API, and the screen your users tap, so nothing gets lost in a handoff. 6+ years of shipping.

Kamal Hossain
6+
Years Exp.
LLM APIs
RAG
pgvector
Qdrant
Agents & Tool Use
MCP
Evals
Python
FastAPI
Ollama
React
Next.js
Node.js
TypeScript
React Native
PostgreSQL
Docker
AWS
LLM APIs
RAG
pgvector
Qdrant
Agents & Tool Use
MCP
Evals
Python
FastAPI
Ollama
React
Next.js
Node.js
TypeScript
React Native
PostgreSQL
Docker
AWS

Core Philosophy

Software is more than just code. It's about Solutions.

I believe in building software that isn't just functional, but intuitive and scalable. My approach combines technical rigor with a deep understanding of user needs.

Performance
Optimizing for speed at every layer, from database to UI.
Scalability
Architecting systems ready for future growth and users.

Need a Senior Lead?

I help startups bridge the gap between design and production with expert technical guidance.

Send an Inquiry

AI Systems

LLM APIsRAGpgvector / QdrantAgents & MCPEvalsPython / FastAPI

RAG pipelines, agents with tool use, and MCP servers, built on hosted LLM APIs or local models via Ollama, with evals to check they actually work.

Full-stack

ReactNext.jsNode.jsTypeScript

The web app and API around the model: streaming chat UIs, auth, data models, and deployment.

Mobile

React NativeiOSAndroid

Bringing AI features to iOS and Android with React Native.

Experience

Where I've worked, and what shipped.

  1. President & Lead Software Engineer

    Ark-am

    Remote

    Current

    Jan 2022 – Present

    4 yrs 10 mos

    A software studio in Atlanta that builds web and mobile apps for US clients. Joined as a software engineer in 2022 and became President in September 2026, an officer title, not an ownership stake. Lead the engineering side and still write code every day.

    1. President & Lead Software EngineerSep 2026 – Present · 2 mos
    2. Software EngineerJan 2022 – Aug 2026 · 4 yrs 8 mos
    • Run client projects from planning to release: architecture, code reviews, and deploys, while still writing much of the code.
    • Add LLM features to client apps end to end, from the prompt to the API to the screen, so clients don't need a separate AI team.
    • Set up Docker deployments on AWS so every release goes out the same way.

    Featured projectGrowdie

    Apr 2024 – Present · 2 yrs 7 mos

    A habit and personal-growth app for iOS and Android, with a social feed, chat, and an in-app store.

    • Lead engineer since day one. Wrote most of the mobile app, the backend, and the admin panel, about 5,000 of the project's 5,500 commits.
    • Built 1:1 and group chat, the social feed, and the report and block tools the App Store asks for.
    • Set up subscriptions with Apple in-app purchases and store payments with Stripe.
    • Keep it healthy: five Expo upgrades so far, deploys, backups, and a time-zone fix every daylight-saving change.
    React NativeExpoNode.jsMongoDBRedisSocket.IOStripeApple IAP

    Featured projectShoulder to Cry On

    Jan 2022 – Present · 4 yrs 10 mos

    A mental-health platform where people support each other, with licensed therapists there when they need more.

    • Built it twice. Main developer on v1, reviewing and merging three other developers' pull requests, then rebuilt v2 almost entirely solo.
    • Built video and audio calling with WebRTC, plus real-time chat with attachments, reactions, and edits.
    • Kept private files off public links, since this is mental-health data. Attachments and therapist documents open through short-lived signed links.
    • Built sign-up with Google, LinkedIn, and Facebook login, email verification, and a separate sign-up for therapists.
    Next.jsReactNode.jsMongoDBSocket.IOWebRTCGoogle Cloud Storage
    LLM APIsRAGNext.jsNode.jsReact NativePostgreSQLAWS

    Verify on Ark-am's site:Officer appointmentEngineering team

  2. Software Engineer

    Fitlog

    Contract · Remote

    Dec 2021 – Dec 2021

    1 mo

    A coaching platform for personal trainers.

    • Built features for the trainer web app over a one-month contract and shipped them to production.
    ReactNode.js
  3. Software Engineer

    Scaledex

    Dhaka, Bangladesh

    Sep 2020 – Nov 2021

    1 yr 3 mos

    A product agency building apps for startups and larger companies.

    • Built client web apps with React and Node.js, from the design files all the way to launch.
    ReactNode.jsMongoDB

The Track Record

Delivering Impact, One Line at a Time.

6+
Years Exp
10+
Products Launched
Available for New Projects

Ready to transform your business?

Let’s combine powerful engineering with seamless design to build a product your users will love.