Shipped 32+ projects internationally, working directly with founders across SaaS, web platforms, mobile apps, e-commerce, AI products, and internal business systems, including digital platforms, dental operations, DropLink, EasyCV, TraxNYC, and BrightHire. I work across system design, backend architecture, databases, DevOps, integrations, AI agents, automation, and product problem-solving, taking ideas and existing products from technical planning through production, scaling, and long-term support. A lot of the most interesting work stays private.
Sabbir Rahman
Available for workCurrently fixing your vibe-coded $1M MRR SaaS
Just a developer trying to lock in. Building web and mobile applications using TypeScript, Next.js, Flutter, or whatever gets the job done. I care about clean interfaces, production-ready frontend systems, and practical full-stack workflows.
GitHub contributions
AugSepOctNovDecJanFebMarAprMayJunJulAug
1,107 contributions in the last year
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Experience
Led frontend development for commicplan.com, contributed across UI, backend, and database systems for the National Malaria Control Programme, and worked with the Mahidol Oxford Tropical Medicine Research Unit while conducting technical workshops across Chittagong upazilas.
Tech Stack
Languages
TypeScriptJavaScriptPythonGolangDart
Frontend
ReactNext.jsTailwind CSSFramer MotionReduxLeaflet
Backend & API
Node.jsExpress.jsFastAPIREST APIsWebSockets
Cloud & DevOps
AWS EC2AWS LambdaAWS S3CloudflareVercelDockerNginxGitHub Actions
Databases
PostgreSQLMongoDBMySQL
Mobile
FlutterFirebase
Architecture
Domain Driven DesignMicroservicesEvent-Driven ArchitectureReal-time SystemsScalable System Design
Developer Tools & Integrations
GitGitHubBashNeoVimObsidianRStudioStripen8n
Featured Projects
A tighter landing selection focused on product work, internal systems, and launch-ready software builds.
2025
QuickHire
UK geolocation-based hiring platform
A city-first hiring marketplace for local employers and nearby candidates across UK service markets.
FrontendBackendPostgreSQLStripe+1 more
View case study
2026
TraxNYC
Premium ecommerce platform
A luxury storefront with real-time operations for products, orders, support, and offer management.
Next.jsFirebaseAdmin CMSLive Chat+1 more
View case study
2026
Droplink
Multilingual SaaS acquisition engine
A multilingual growth website built to turn SEO traffic into qualified SaaS signups.
Next.jsTailwind CSSMultilingualSEO Metadata+1 more
View case study
2026
X Engage Bot
AI-assisted brand engagement automation
An automation system that helps brands stay visible on X without building heavy social infrastructure.
Node.jsOpenClaudeGitHub ActionsCron Jobs+1 more
View case study
2025
Early Warning Alert System for Disease Outbreaks
Disease surveillance, case prediction, and officer alerting.
A monitoring platform for outbreak detection, LLM-assisted case forecasting, risk-area mapping, alerts, and reporting across public-health operations.
FrontendBackendDatabaseRisk Prediction+1 more
View case studyLatest Writing
All posts27 Apr 2026
Backend Testing That Actually Catches Production Failures
A practical deep dive into testing SaaS backends with pytest and k6 against duplicate submissions, weak validation, rate-limit gaps, oversized payloads, and database abuse.
Backend TestingSaaSPytest
16 Nov 2025
Macrotask vs Microtask in Node.js
A practical guide to event loop ordering, Promise callbacks, and process.nextTick.
Node.jsEvent LoopJavaScript
Let's Work Together
Get in Touch
Choose your preferred method to connect and let's discuss your project.
Book a discovery call30-minute Google Meetsabberrahman.contact@gmail.comQuick inquiries and questionsWhatsAppQuick messages and project chats
Response within 24 hours - Available for hire