S M Nowshadur Rahaman

Senior Full-Stack Engineer
+880 1851 836744nowshad.rahaman@gmail.comRampura, Dhaka, BangladeshLinkedIn·GitHub·TopCoder

Overview

Hands-on architect with over 11+ years of experience developing scalable, cloud-native platforms across startups and enterprises. Specializes in JavaScript/TypeScript, .NET, distributed systems, serverless architecture, and real-time data pipelines. Proven leadership in architecting platforms, driving cross-functional teams, and managing the DevOps lifecycle.

Competencies

Architecture:Microservices, Serverless, CQRS, SaaS Platforms, Edge-first Design
Cloud Platforms:AWS (Lambda, EC2, S3, RDS, CloudFront, SNS, SES), Azure (Functions, Blob, Cosmos DB), Cloudflare (R2, KV, Durable Objects)
Languages:JavaScript, TypeScript, C#, Python, Java, Go, SQL
Frontend:React, Remix, Angular, Lit, Astro
Backend:Node.js, .NET Core, Express, HonoJS, Next.js, FastAPI
Realtime:Kafka, Redis, Supabase, RabbitMQ, Ably
Data:Microsoft SQL Server, PostgreSQL, MySQL, ClickHouse, Cosmos DB, DynamoDB
DevOps & Observability:CI/CD Pipelines, Docker, Terraform, GitHub Actions, Azure DevOps, Datadog (RUM, Tracing), CloudWatch, App Insights
Mobile:Xamarin (Android), Flutter

Experience

AdoptSequence & AdoptIQ (Curtis Digital Inc.) — Remote
Solution ArchitectOct 2023 – May 2025

Led architecture and platform engineering for two SaaS products: an onboarding/automation platform and an A/V enhancement workflow service.

  • Led backend migration of AdoptSequence from AWS Lambda → Trigger.dev to support long-running video processing.
  • Built a public content-sharing system with Astro + Cloudflare Durable Objects; optimized for SEO and low global latency.
  • Integrated Supabase for real-time sync and Postgres storage; replaced Ably, lowering latency and cost.
  • Operationalized RUM + APM in Datadog with CloudWatch signals; guided devs to review error patterns, improving iteration speed by ~50%.
  • Developed a modular onboarding SDK (Shadow DOM → Lit Web Components) and a lightweight Chrome extension to test/debug onboarding flows.
  • Managed multi-repo codebases on GitHub with standardized PR reviews and automation.
  • Mentored junior developers, enforced best practices, and led roadmap execution with founders.
  • Integrated Clerk authentication across multiple applications.
Colliers International (via TopCoder) — Remote
Senior Full-stack DeveloperOct 2021 – Sep 2023

Modernized internal apps for a global commercial real-estate firm, replacing third-party tools with Azure-native and AWS-native services.

  • Replaced a 3rd-party valuation tool with an internal AWS solution (EC2, S3, SES, RDS) in 3 weeks; cut vendor cost ~60–80% and absorbed additional developer cost solo.
  • Modernized Angular apps (major version upgrades + module refactors); build time reduced 25–40%, unit test coverage to 90%.
  • Migrated Google Maps → Mapbox, added static-map support for exported documents.
  • Mentored engineers and led POCs with architects/BAs; reduced new-hire ramp ~30–50% and accelerated concept-to-pilot ~2x.
  • Drove code reviews and onboarding standards; PR cycle time −20–35%, post-release defects −20–40%.
Relisource Inc. — Dhaka, Bangladesh
Senior Software EngineerNov 2018 – Aug 2021
  • Developed a Clinical Trial Management System for a global pharmaceutical client.
  • Built an enterprise LMS platform with mobile support for educational clients.
  • Actively mentored team members on architecture and clean code practices.
Astha IT — Dhaka, Bangladesh
Senior Software EngineerMar 2014 – Oct 2018
  • Led development for enterprise systems in logistics, education, and fintech.
  • Mentored junior engineers and participated in system architecture, client demos, and delivery cycles.

Projects

FinSync — Personal Finance Intelligence

Elastic Serverless data streams + Vertex AI. Hybrid search (keyword + vector), monthly transforms, and a RAG chat layer. Pydantic-validated JSON ingestion.

Education

Bachelor of Computer Science and Engineering
Shahjalal University of Science and Technology · 2013