Sujit Kumar Maiti
Full Stack Developer
I build scalable systems and intuitive interfaces that stay calm when traffic spikes.
01 — About
I build things for
the internet.
I'm a full-stack developer with 3+ years turning ambitious ideas into production systems, the kind that handle real traffic, real transactions, and real people.
My bread and butter is NestJS, PostgreSQL, and AWS, but I'll reach for whatever tool gets the job done properly. I've wired up microservices, tuned slow queries, automated CI/CD pipelines, and shipped payment flows, sometimes all in the same sprint.
Before turning to code full-time, I published research on protecting medical records with cryptography. Old habit: I still care too much about how data is stored and who can touch it.
I work across the full stack, backend services are where I live, but I've shipped frontends in Next.js and React and know what makes a product feel right end-to-end.
02 — Work
Where I've been
Full Stack Developer Cravin Technologies LLC FZCO
- Designed and scaled backend services for a booking platform using NestJS & PostgreSQL, reducing API latency by 25% while supporting 2× user growth.
- Collaborated on frontend flows in Next.js to ensure seamless integration between UI and backend services.
- Integrated payment gateways, POS systems, and AWS SES workflows, reducing transaction inconsistencies and support overhead.
- Led cross-functional efforts to harden the platform for peak traffic without service degradation.
Associate Software Engineer Coditas Solutions LLP
- Built and shipped 3 production-grade web applications using Node.js & PostgreSQL.
- Improved API performance by 20% through query optimisation and Redis caching strategies.
- Contributed to microservices adoption, enabling the system to handle 2× peak load reliably.
- Delivered 10+ features end-to-end with ownership across backend logic and deployments.
03 — Projects
Things I've built
- Problem
- Orders across multiple restaurant branches were failing silently due to race conditions and duplicate submissions.
- Approach
- Designed idempotent event-driven workflows with PostgreSQL advisory locks and a Redis-backed deduplication layer.
- Impact
- Zero duplicate transactions in 6+ months of production; delivery delays cut by 15%.
Designed and built a backend-heavy SaaS platform managing order lifecycles, delivery-zone optimisation, real-time map integrations, and analytics reporting.
- Implemented idempotent order workflows to prevent duplicate transactions.
- Integrated third-party map APIs for delivery-zone optimisation, reducing delays by 15%.
- Built a reporting layer generating 5+ business-critical analytics dashboards.
- Structured PostgreSQL schemas for real-time dispatch logic under peak load.
- Problem
- Manual verification workflows couldn't scale, processing backlogs grew with every client onboarded.
- Approach
- Migrated to a serverless event-driven architecture on AWS Lambda with encrypted data pipelines and async job queues.
- Impact
- Supported 50% more users without added infrastructure; processing time cut by 20%.
Architected a serverless compliance system with encrypted data pipelines and automated verification workflows designed for scale.
- Migrated workloads to AWS Lambda, supporting 50% more users with reduced infrastructure overhead.
- Implemented encryption and secure data handling practices to reduce security incidents by 30%.
- Automated verification workflows, cutting manual processing time by 20%.
- Designed event-driven processing to handle large verification volumes asynchronously.
04 — Skills
My toolkit
Languages
Frameworks
Databases
Cloud & DevOps
Working style
05 — Philosophy
How I Build
I optimise for clarity first, clever code ages badly.
Idempotency and data consistency are non-negotiable in distributed systems.
Observability and CI/CD are part of the product, not afterthoughts.
AI is a productivity multiplier, but architecture is still a human decision.
06 — Contact
Let's work
together.
Got an interesting problem? Building something ambitious? Or just want to say hi, I'm always happy to chat.
hello@sujitmaiti.cv