Dipak Sumesara

Backend-heavy full-stack engineer with 8+ years designing and shipping scalable systems end-to-end. Spent 3 years as architect and lead for a US enterprise SaaS platform — owning system design, building the backend, leading the team, and contributing to the React frontend — where I cut API response times from seconds to milliseconds. Contributed to a quality-first Singapore government health platform enforcing 90% test-coverage gates and pixel-perfect design QA, and built the real-time backend for a fantasy-sports app serving 100K+ concurrent users at peak.

Comfortable across the full stack and time zones; daily user of AI-assisted development tools.

Senior Backend Engineer / Platform Lead at SwagUp (via Extendime) (2023-03 – 2026-04)

Aloha — Enterprise Admin & Operations Platform: Architect and lead for a B2B enterprise operations platform (vendor, distributor, admin workflows) — owned system design, built the backend, led the team, and contributed to the React frontend, working alongside US product and engineering teams. SwagUp.com — Customer-Facing Platform: Built REST and GraphQL APIs and the React frontend for order tracking and a multi-tier pricing engine with dynamic discount logic and real-time quote generation.

• Cut API response times from seconds to milliseconds via Redis caching, query optimization, and database indexing.
• Built backend microservices behind an API Gateway pattern with centralized authentication, authorization, and session management on AWS Lambda.
• Implemented a reliable Node-to-Salesforce data sync using AWS SQS with a dead-letter queue (DLQ) for guaranteed delivery and error handling.
• Designed fault-tolerant, event-driven flows with pub/sub and SQS queuing, backed by robust retry and observability patterns.
• Built Elasticsearch-backed search for ~20K products with custom indexing pipelines; the core challenge was keeping the index reliably in sync with the source data.
• Containerized services with Docker — maintaining Dockerfiles for build steps and versioning — and ran deployments through the same pipeline; served assets via S3 and CloudFront CDN.
• Owned CI/CD pipelines, branching strategy, and release workflows, including off-hour production deploys under high-availability SLAs.
• Established Jest test automation and code-review standards across the platform.

Software Engineer / Backend Lead at CoffeeBeans Consulting (2021-06 – 2023-03)

Health Promotion Board (Healthy 365) — Singapore Government Health Platform: Built backend systems (Node.js) for a high-quality-bar citizen health application (React frontend), delivered by a 10-person cross-functional team under a rigorous engineering process. Salam Kisan — Agritech Platform: Owned backend architecture on Strapi CMS; built REST APIs and automated data-sync workflows for an agri supply-chain platform, including Open edX integration for learning content.

• Worked within a strict quality pipeline: mandatory kickoff calls with QA and design before development, pair programming, dual QA (pixel-level design QA against Figma, then functional QA), and staged Dev → QA → UAT → Production promotion.
• Met enforced quality gates: 90% minimum unit-test coverage (commits blocked below threshold), strict ESLint rules, and standardized commit conventions — build/commit failed on any violation.
• Led a 3-engineer backend team across sprint delivery, code quality, and production support.

Software Engineer at Yudiz Solutions (2020-05 – 2021-05)

11Wickets — Fantasy Sports Platform (Dream11 competitor): Built real-time backend features for a platform serving 100K+ concurrent users at peak match load.

• Built real-time backend features for a platform serving 100K+ concurrent users at peak match load: live score updates over WebSockets and Redis caching to sustain high-concurrency read traffic.
• Implemented full-stack WebSocket-based live chat (frontend and backend) for real-time user engagement during matches.
• Led a React UX overhaul: migrated to functional components with Hooks, added lazy loading, infinite scroll, and optimized state management.
• Mentored junior developers.

Software Engineer at Biztech Consulting & Solutions (2019-01 – 2020-03)

• Proposed and led a v2.0 overhaul, migrating from legacy Angular to a modern, modular architecture with clean design patterns and secure API integrations — adopted by the founding team.
• Rebuilt the product from the ground up, splitting the feature set into modules to enable a tiered pricing model (Professional, Ultimate, and Custom — pick-your-own feature set), replacing the previous all-or-nothing model and driving significant customer growth.
• Built a Fabric.js product designer with live 2D preview and Three.js 3D preview for real-time customization.

Software Engineer (Intern → Full-Time) at Angular Minds (2017-12 – 2018-09)

Numnu — Food Event & Fair Discovery App: Built a food-event and fair discovery app (Angular, Ionic) that surfaces local food events and trending dishes by proximity and date range.

• Delivered an interactive event-guide mode used at large events (e.g., Royal Manitoba Winter Fair) for schedules, maps, vendor discovery, and guest reviews, plus a photo-rich review pipeline with pricing and timelines.

Master of Computer Applications in Computer Applications – Pune University (2018)