S M Nowshadur Rahaman
Senior Full-Stack Engineer
Professional 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.
Core 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
Professional Experience
AdoptSequence & AdoptIQ (Curtis Digital Inc.) — Remote
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.
Tech Stack
TypeScript, JavaScript, Node.js, React, Remix, Lit, Astro, Next.js
AWS (Lambda, EC2, S3, RDS, CloudFront), Cloudflare (Workers, Durable Objects, R2)
PostHog, Datadog, CloudWatch, GitHub Actions, Docker
Colliers International (via TopCoder) — Remote
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%.
Tech Stack
Angular, TypeScript
GraphQL, Power BI, Mapbox, Syncfusion
Relisource Inc. — Dhaka, Bangladesh
- 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.
Tech Stack
TypeScript, Angular, AngularJS
Xamarin
Astha IT — Dhaka, Bangladesh
- 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