Sourav Chowhan

Bangladesh — Remote

1. Co-Founder & Technology Officer Founding team

   2026 – Present

   One of four founders, leading technology for a community platform and digital commerce brand — launching soon.

   • → One of four co-founders of CHAWMEN — a community of builders, founders, and creators, with its own digital luxury commerce platform.
   • → Lead the technology side: architecture, backend, and engineering decisions for the community platform and the Duhan storefront.
   • → Development is underway, with public launch coming in the next few days.

   • Founding Team
   • Technical Leadership
   • Backend Architecture
   • E-Commerce

Remote — clients worldwide

1. Founding Member · Director of Web & Software Engineering Founding team

   Jul 2026 – Present

   Founding member leading web and software engineering at a technology and advisory firm serving businesses worldwide.

   • → Founding member of Sabre Stone Research, a strategic advisory and technology development firm — the resources and expertise I brought helped shape its identity.
   • → As Director of Web & Software Engineering, I lead web and software development — designing and building backend systems tailored to each client rather than templated solutions.
   • → Work alongside the advisory side of the business on executive consulting, risk assessment, and growth planning for clients.

   • Software Development
   • Systems Architecture
   • Consulting
   • Client Delivery

London, UK — Remote

1. Software Engineer Part-time

   May 2026 – Jul 2026

   Built core currency-exchange services and real-time rate ingestion for a fintech backend.

   • → Built the core exchange services and an internal tool to calculate and monitor currency conversion rates, taking it to a completed MVP.
   • → Built high-performance, real-time background workers and endpoints for currency rate ingestion.
   • → Focused on transaction-rate performance in a Go-based backend — my first dedicated fintech role.

   • Go
   • Fintech
   • Background Workers
   • Real-time Data

Dhaka, Bangladesh

1. Software Engineer Full-time

   Oct 2024 – Nov 2025

   Core engineer on aviation crew scheduling and large-scale e-commerce data pipelines.

   • → Core team member on the Aviation Crew Scheduling and Resource Optimization platform — built complex simulation-based planning logic for crew assignments, handling constraints like crew certifications, aircraft types, duty regulations, and availability rules.
   • → Developed thread-safe, real-time backend components supporting thousands of concurrent updates, improving reliability and performance in a critical aviation environment.
   • → Contributed to large-scale e-commerce data pipelines using Spring Batch and Apache Kafka.
   • → Built low-latency synchronization services with gRPC and CQRS, keeping read-heavy operations under 100ms while optimizing database patterns for high concurrency.

   • Java
   • Spring Boot
   • Spring Batch
   • Kafka
   • gRPC
   • CQRS
   • Concurrency

2. Junior Software Engineer Full-time

   Apr 2023 – Oct 2024

   Owned a mobile app backend end-to-end and scaled a high-traffic news media platform.

   • → Took full ownership of the mobile application backend — implemented secure authentication with JWT/OAuth2 and RBAC, and real-time push notifications with Firebase Cloud Messaging.
   • → Worked on a high-traffic news media platform: optimized database performance with Redis caching, integrated third-party APIs, and enabled real-time SEO-friendly content indexing.
   • → Supported the enterprise HR application through bug fixes, performance improvements, and ongoing maintenance.
   • → Grew into a reliable contributor who could deliver key features independently while collaborating closely with the team.

   • Spring Security
   • JWT / OAuth2
   • RBAC
   • Firebase FCM
   • Redis
   • PostgreSQL

3. Software Engineering Trainee Internship

   Oct 2022 – Apr 2023

   Backend development on a high-traffic news media platform.

   • → Contributed to backend development for a high-traffic news media platform, gaining hands-on experience with Spring Boot, PostgreSQL, Redis, and RESTful API development.
   • → Assisted with query optimization, caching strategies, and smaller feature work while learning Agile practices and production support workflows.
   • → Built a strong foundation in backend engineering and a practical understanding of large-scale system operations.

   • Spring Boot
   • PostgreSQL
   • Redis
   • REST APIs