Looking for a job

Makhmud User

@makhmuduser

Full Stack Engineer at Langcode building an internal AI Transformation platform for a Fortune Global 500 semiconductor manufacturer.

South Korea

Message

What I'm looking for

I'm open to remote full-stack, AI/Agentic AI engineering, or team lead roles with teams in the US, Europe, or Asia.

At Langcode, I work full-stack on an internal AI Transformation platform for a Fortune Global 500 semiconductor manufacturer.

At Ainex Lifetime Education, I took over a stalled government platform and shipped OpenAI-driven features. I also rewrote slow MySQL queries and added a CDN layer to improve load times on its busiest pages.

After being promoted from Developer to Team Lead, I managed five engineers across 18 concurrent client maintenance projects. I also designed LiveKit live-classroom APIs and integrated PayApp server-side.

I built Lexara, a production RAG SaaS, on my own in under a week. My work spans full-stack products and AI systems, including RAG pipelines, document intelligence, and agent workflows.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Engineer

Current

Langcode

Jul 2026 - Present (4 months)

Worked as Full Stack Engineer at Langcode.

Developer → Team Lead

Ainex Lifetime Education

Oct 2025 - Jun 2026 (8 months)

Took over as owner of a stalled government platform (4,000+ users, 13 accounts); shipped OpenAI-driven features.
Rewrote slow MySQL queries and added a CDN layer for media — cut load times on the busiest pages.
Designed LiveKit live-classroom APIs and integrated PayApp server-side end-to-end (webhooks, verification).
Promoted to Team Lead; managed 5 engineers across 18 concurrent client maintenanc

Freelance Software Engineer

Dropshipping Admin Panel

Aug 2025 - Aug 2025 (0 months)

Designed and built a full-stack dropshipping admin dashboard from scratch
as a freelance project — covering the full lifecycle from architecture to
deployment.

The platform centralized inventory tracking, order management, and supplier
data across multiple vendors into a single unified interface. Built with
Angular for the main dashboard shell and Vue.js for modular widget
components, connec

Full-Stack Developer

BTREE

Jul 2023 - May 2025 (1 year 10 months)

Full-stack feature delivery: Joined with no single point of ownership across the stack and needed consistent Next.js/NestJS/MongoDB delivery without waiting on a dedicated architect for every feature. Built and maintained production features end-to-end, designing GraphQL schemas and REST APIs, and optimized large-scale backend queries with Prisma ORM as data volume grew.

Auth & deployment pipelin

Junior Frontend Engineer

Levelupsoft Inc

Apr 2022 - May 2023 (1 year 1 month)

Cross-browser & mobile fixes: The frontend rendered inconsistently across browsers and lagged on mobile, directly affecting real paying customers on a large food delivery platform. Fixed cross-browser compatibility issues and optimized rendering and performance for mobile without a full rewrite.

Design-to-code: Design and engineering worked from disconnected files, so Figma mockups drifted from w

Frontend/Backend Developer — Internship

와이랩스 (Y-Labs)

Jan 2022 - Mar 2022 (2 months)

University internship: learned frontend/backend fundamentals, implemented CRUD operations, and translated Figma designs into responsive UI.

Stack: JavaScript, HTML, CSS, REST API, Figma