Engineering
- Software architecture
- System design
- REST APIs
- Performance optimization
- Code review
- Technical leadership
Available for impactful opportunities
Architecting web products for SaaS, GIS and decision support systems.
I’m Raiyan, a senior software engineer turning complex climate, agritech and enterprise workflows into scalable products used across Asia-Pacific and Africa.
Based inDhaka, Bangladesh
5+years building
production software
production software
8countries reached
through my work
through my work
400msadvisory generation
down from 2 min
down from 2 min
Angular✦React✦TypeScript✦NestJS✦Django✦PostgreSQL✦Redis✦Docker
01 Profile
A product-minded engineering partner
I build for the people using the product and the team maintaining it.
With more than five years of experience, I design, architect and deliver scalable web applications, SaaS platforms and enterprise systems from interface architecture through API and database performance.
My work combines technical leadership with practical product thinking: clear interfaces, resilient backends, efficient queries and code that distributed teams can confidently extend.
01
Performance is a feature. Fast feedback and thoughtful loading strategies are part of the experience.
02
Architecture should enable change. Modular systems keep growth sustainable.
03
Clarity beats cleverness. Maintainable code makes teams and products move faster.
Frontend
- Angular
- React
- Next.js
- Astro
- TypeScript
- JavaScript
- Leaflet
- Three.js
Backend
- Node.js
- NestJS
- Django
- Express.js
- Python
- Redis
Data & delivery
- PostgreSQL
- Knex.js
- Docker
- Git & GitHub
- CI/CD
- Firebase
- Vercel
- GA4
02 Experience
Five years of steady progression
From SaaS foundations to international product architecture.
01
Senior Full Stack Developer
RIMES
Regional Integrated Multi-Hazard Early Warning System
- Architect and lead Angular development for ADSS, a multi-country agritech decision-support platform deployed across 8 countries and 8 government organizations.
- Own roughly 20 modules within a 7-person engineering team, shaping reusable frontend architecture, coding standards, reviews and system-design decisions.
- Reduced crop advisory generation from 2 minutes to 400ms and optimized a critical database query from 95 seconds to 200ms.
- Led production features from requirements through release, including stakeholder collaboration, CI/CD, monitoring, performance and application security.
- Built GIS-heavy flood forecasting interfaces with Leaflet, reducing large-map rendering from about 60 seconds to 500ms.
02
Junior Software Engineer
Intelletive Technologies Bangladesh
- Built Angular and NestJS modules for TekumoPRO, a US field-service SaaS platform covering order management, technician dispatch and work-progress tracking.
- Modernized backend services from Restify to NestJS while preserving core business workflows and improving maintainability.
- Automated invoice generation and email workflows, reducing manual processing by 90%.
03
Full Stack Developer · Contract
Luminous Engineering Pte Ltd.
Singapore-based property services company
- Architected and built the company portfolio website with React, Next.js and reusable components.
- Implemented Sanity CMS, GA4 analytics, SEO-optimized markup, responsive layouts and Vercel deployment.
04
Full Stack Developer · Contract
SynoIT
Singapore-based software services company
- Architected and developed a 3D interactive portfolio website using Astro, GSAP and Three.js.
03 Selected work
Systems with real-world reach
Complex engineering, translated into measurable outcomes.
Selected products spanning climate resilience, field operations, national forecasting, CMS-backed websites and interactive 3D platforms.
Senior Full Stack Developer
Agricultural Decision Support Systems
A multi-country agritech platform for predictive weather, crop, pest and disease advisories serving government teams and farming communities.
ImpactLed roughly 20 modules across 8 countries and reduced advisory generation from 2 minutes to 400ms.
Full Stack Developer
TekumoPRO
A US field-service management SaaS platform connecting enterprises with local technical labor through order, dispatch and work tracking workflows.
ImpactModernized Restify services to NestJS and automated invoice and email workflows, cutting manual processing by 90%.
Frontend Developer
Flood Forecasting & Warning Centre
A flash-flood forecasting module and interactive geospatial dashboards supporting national disaster preparedness and response.
ImpactReduced large-map rendering from about 60 seconds to 500ms for faster flood-risk visualization.
Full Stack Developer
Luminous Engineering
A CMS-backed portfolio website for a Singapore property services company, built with reusable React components and responsive layouts.
ImpactImplemented SEO markup, analytics and a GitHub-to-Vercel production deployment workflow.
Full Stack Developer
Synoit
A 3D interactive portfolio website for a Singapore-based software services company.
ImpactArchitected the interactive experience with modern static-site performance and motion-rich storytelling.
04 Learning & research
Education
2025
Advanced Certificate for Management Professionals
IBA, University of Dhaka
2020
B.Sc. in Computer Science & Engineering
East West University · CGPA 3.50 / 4.00
Publication
IEEE CONIT · 2021Analyzing and Evaluating Boosting-Based CNN Algorithms for Image Classification
View publication05 Start a conversation
Have a meaningful problem to solve?
Let’s build something that works beautifully and keeps working.
I’m open to senior engineering roles, architecture-heavy product work and ambitious web platforms. Tell me what you’re working on.