Md.MahafujurRahamanMasud
End-to-end product engineering — quiet interfaces, solid systems.
Senior software engineer and founder building offline-first mobile apps and resilient full-stack web platforms. I design end-to-end — from quiet, considered interfaces to the systems that hold them up.
Moto
"Build calm software. Ship with intent. Respect the user's time."
I build offline-first mobile apps and full-stack web platforms — with an obsession for clarity, performance, and the small details that make software feel calm.
I design and engineer full-stack products end-to-end — from offline-first mobile apps to high-throughput web platforms. My focus is on clean architecture, calm interfaces, and software that holds up under the weight of real users.
I'm the founder of Champ Coders, and I've shipped products used across South Asia — including TakaMinder, an offline ledger for small business owners, and LeadSync, a unified outreach inbox for sales teams.
- Years shipping
- 4.5+
- Products built
- 10+
- Countries served
- 5
- Product founded
- 1
Tech Stack
- Next.jsFrontend
- ReactFrontend
- TypeScriptFrontend
- TanStack RouterFrontend
- Tailwind CSSFrontend
- Framer MotionFrontend
- GSAPFrontend
- React NativeMobile
- ExpoMobile
- SQLiteMobile
- Offline-first syncMobile
- EASMobile
- NestJSBackend
- Node.jsBackend
- PostgreSQLBackend
- PrismaBackend
- RedisBackend
- RESTBackend
- GraphQLBackend
- LLM APIsBackend
- AI-assisted discovery & searchBackend
- Personalization & matchingBackend
- DockerTooling & Infra
- AWSTooling & Infra
- Cloudflare WorkersTooling & Infra
- GitHub ActionsTooling & Infra
- VitestTooling & Infra
- PlaywrightTooling & Infra
- PuppeteerTooling & Infra
✦ 02 / Services
What I do — end to end.
Product Engineering
End-to-end build of web platforms and mobile apps — from architecture to ship. Embedded with founders as a long-term technical partner.
- Architecture & system design
- Web + mobile delivery
- Founder partnership
Offline-first Mobile
React Native apps that work without connectivity. Local SQLite stores, conflict-free sync, and interfaces that feel native on every device.
- React Native + Expo
- SQLite + CRDT sync
- EAS deployment
Full-stack SaaS
Multi-tenant Next.js + NestJS platforms built to scale — dashboards, automation engines, real-time inboxes, and the infra that holds them up.
- Next.js + NestJS
- PostgreSQL + Redis
- Real-time systems
✦ 04 / Process
A calm path from idea to shipped.
- 01
Discover
A focused sprint to map the problem, the user, and the smallest valuable cut—surfacing constraints early when mobile, offline, browser extensions, or multi-channel delivery matters. I leave you with a written scope and a clear plan.
- Scope brief
- Architecture sketch
- Risk map
- 02
Design
Quiet, considered interfaces — flows and layouts anchored to the real data model, not placeholder copy. Implementation-ready specs and reusable patterns; I partner with designers when the project calls for deeper visual craft.
- Flow & UI specs
- Component patterns & tokens
- Interactive prototype
- 03
Build
Weekly shippable increments. TypeScript end-to-end—from web apps to React Native—with offline-first and sync paths when the product demands them. Tested where it matters, with previews you can try each week.
- Production app
- CI/CD pipeline
- Weekly previews
- 04
Scale
Once it's live, I tune what real users hit—performance, observability, and the next set of bets backed by data.
- Monitoring
- Performance tuning
- Roadmap iteration
✦ 02 / Selected Work
Products shipped with intent.
A focused index of work spanning founder products, client engagements and engineering retainers — each shipped end-to-end.
- ✦ 01
LeadSync.ai/ AI-assisted outbound · unified inbox · CRM
Ships as- Web
- Mobile
- Next.js
- React
- TypeScript
- NestJS
- ✦ 02
LeadSync Extension/ Find · close leads · Chrome
Ships as- Browser extension
- TypeScript
- Chrome Extension
- Manifest V3
- ✦ 03
TakaMinder/ দেনা-পাওনা · ব্যক্তিগত খরচ · বাংলা UI
Ships as- Mobile
- React Native
- Expo
- SQLite
- TypeScript
Founder
- ✦ 04
VioResume/ AI resume builder · job matcher · ATS-ready templates
Ships as- Web
- Next.js
- React
- TypeScript
- Tailwind CSS
- ✦ 05
Renesa Bazar/ Tech e-commerce · PC & camera builders · Bangladesh
Ships as- Web
- Next.js
- React
- TypeScript
- Tailwind CSS
✦ 03 / Skills
A toolkit, used with restraint.
Frontend
- Next.js✦
- React✦
- TypeScript✦
- TanStack Router✦
- Tailwind CSS✦
- Framer Motion✦
- GSAP✦
Mobile
- React Native✦
- Expo✦
- SQLite✦
- Offline-first sync✦
- EAS✦
Backend
- NestJS✦
- Node.js✦
- PostgreSQL✦
- Prisma✦
- Redis✦
- REST✦
- GraphQL✦
- LLM APIs✦
- AI-assisted discovery & search✦
- Personalization & matching✦
Tooling & Infra
- Docker✦
- AWS✦
- Cloudflare Workers✦
- GitHub Actions✦
- Vitest✦
- Playwright✦
- Puppeteer✦
✦ 04 / Experience
4.5 years, shipped end-to-end.
2025 — Present
Remote · Republic Plaza, Singapore
Senior Software EngineerLeadSync.ai
2-step pathAI-assisted B2B outbound across web dashboard, APIs, React Native apps, and the Chrome extension — one product story across four surfaces. Grew from Mid into Senior while shipping end-to-end.
Role progressionMid Software Engineer
Mid2025 — 2026
Shipped LeadSync across frontend, backend, mobile app, and Chrome extension — dashboard and inbox UX, services and integrations, and clients that share one sequencing model.
- Built sequences, inbox, and CRM-connected flows on web and extension surfaces
- Implemented and consumed APIs from backend services for mobile and dashboard features
- Tuned UX and reliability on high-traffic dashboard, extension, and app paths
Senior Software Engineer
Senior2026 — PresentLatest role
Senior scope across web, backend, mobile, and extension — mentoring, architecture for multichannel outbound, and sustainable releases on every surface.
- Lead delivery when features span Next.js, services layer, React Native, and Chrome extension
- Shape API and integration design so extension, mobile, and web honor the same tenancy and limits
- Mentorship, reviews, and raising quality bar across stacks and regressions
2024 — 2025
Remote
Frontend LeadVioResume
Frontend lead at VioResume — AI resume builder and job matcher. Owned the Next.js layer end-to-end: templates, resume flows, checker entry points, marketing surfaces, and how design became production UI.
- Led frontend practice — architecture, patterns, and delivery quality for all Next.js surfaces
- Shipped ATS-focused authoring, checker flows, matching UX, and calm marketing aligned with design
- Mentored contributors and coordinated with backend on AI-guided flows and product narrative
- Kept responsiveness, accessibility, and template consistency cohesive across app and marketing
2023 — 2024
Onsite · Dhanmondi, Dhaka, Bangladesh
Software EngineerCodeact Soft
Shipped multiple products across frontend, backend, and mobile — Next.js/React web apps, Node.js services (Express, Prisma, MySQL), and React Native apps in production.
- Owned frontend UI, backend APIs, and mobile clients for Renesa Bazar, Superstructure, Hej Care, and Pet Obsession
- Stack mix: Next.js, TypeScript, Redux on web; Node.js, Express, Prisma, MySQL on server; React Native on mobile
- Delivered two production mobile apps with aligned backend contracts and release cadence
- Contributed to Tech-Concies — large-scale initiative spanning web services and clients
- Performance, scalability, and UX improvements across frontend, backend, and app surfaces
2022 — 2023
Remote
MERN Stack DeveloperAide Business Solution
Junior MERN engineer on an e-commerce ERP dashboard — Next.js and Tailwind on the front, Node.js, Express, and MongoDB on the back.
- Built ERP dashboard with Next.js, React, and Tailwind CSS
- Backend APIs with Node.js, Express, TypeScript, and Mongoose
- Partnered with design to ship responsive, user-friendly interfaces
- Led and mentored interns toward milestones and delivery quality
✦ Now booking · Q2 / Q3 2026
Have a quiet idea worth shipping?
I take on a small number of founder partnerships each quarter. If you're building something you care about for the long term, send a note — I'll reply within 24h.
✦ 05 / Contact
