Sazzad Rume
> full-stack engineer · React, Next.js & AI integrations
I build fast, production-ready web and AI-powered applications with React, Next.js, TypeScript, and modern LLM tooling.
currently · senior software engineer @ holgrex
Works
A selection of work I've built and shipped
Postprism
A social media content management SaaS — compose, adapt, schedule, and publish across 8 platforms from a single editor
- Built end-to-end AI publishing pipeline for 8 social platforms using Claude, GPT-4, and Gemini interchangeably via Vercel AI SDK
- Engineered background job architecture with BullMQ + Upstash Redis + QStash for reliable scheduled publishing on Vercel Hobby
- Designed plan-based entitlement system (Solo/Freelancer/Agency) with per-user AI rate limiting and Row Level Security at DB layer
Holgrex
A technology consultancy where I lead frontend architecture across healthcare, analytics, and AI SaaS products — from a shared design system to production applications serving 500K+ users
- Delivered 15+ production applications serving 500K+ users across mobile, web, and AI platforms
- Built a shared component library adopted across every client project, cutting new-project bootstrap time from days to hours
- Shipped CI pipelines with type-checking, linting, and automated tests gating every merge, with structured error monitoring catching issues within minutes
Experience
Where I've worked and what I've accomplished
Holgrex
Senior Software Engineer
- Lead frontend development for modern web and mobile applications, balancing functionality with clean, user-friendly design
- Build scalable interfaces using React, Next.js, and TypeScript with a focus on performance and maintainability
- Develop real-time analytics dashboards to help client teams monitor key metrics and operational performance
- Deliver a healthcare platform that cut patient-data load times from 8–12 seconds to under 2 seconds by restructuring the data-fetching layer
- Maintain a reusable design system and component library using Storybook and Tailwind CSS
- Lead frontend efforts on an AI-powered SaaS platform with real-time data streams and tool calling
SEBPO
Software Engineer
- Reduced frontend load times from 25 seconds to 2 seconds through optimized API calls and caching strategies
- Created an in-house frontend framework using React and TypeScript, significantly enhancing scalability and performance
- Led frontend development for SaaS-based school management project, delivering polished and responsive interface on schedule
- Contributed to automation of application processing and fund management for Youth Ministry of Bangladesh, handling 100,000+ applications
- Mentored interns and fostered collaborative environment between design team and project managers
Decor IT
Software Engineer
- Designed and implemented frontend project architecture using React and TypeScript, providing scalable and reusable structure for team collaboration
- Developed software engineering course app with intuitive interface, empowering thousands of aspiring engineers in Bangladesh
- Created frontend for photo restoration app, ensuring seamless user experience as secondary company product
- Contributed to UI/UX design of fintech product for credit card and bank account information aggregation
- Built a scalable frontend architecture that became the team's shared foundation for new features
Daffodil
TA and Problem Solving Instructor
- Taught C++, Python, and data structures to undergraduate CS students as a teaching assistant
- Held weekly office hours and lab sessions covering programming fundamentals and problem-solving
- Solved complex data structure and algorithm challenges with students
- Mentored students in problem-solving techniques and programming best practices
Skills & Technologies
A comprehensive showcase of my technical expertise and years of experience
Core Frontend
Backend & Database
AI & Streaming
Tools & Deployment
About
Product-minded engineering with a strong focus on performance, accessibility, and clean design systems.
I specialize in React and Next.js ecosystems — from greenfield SaaS architecture to AI feature integration and design-system scale. My work spans client-services engagements at Holgrex and Postprism, a social-publishing SaaS I've built solo end-to-end.
What you can expect
- Clean, maintainable UIComponents that are easy to reuse, extend, and test.
- Reliable deliveryShipped 15+ production applications on schedule across concurrent client engagements at Holgrex.
- Good documentationA shared component library and Storybook docs that let new projects bootstrap in hours, not days.
Contact
Open to new opportunities