Zeeshan Mahmood

Ontario, Canada

• Architected and shipped a peer-to-peer marketplace solo in 2 months, now in active beta with 200+ testers: a cross-platform Flutter app and web admin portal on Supabase using Clean Architecture and Riverpod.
• Designed a Stripe Connect payments system (authorize-and-capture escrow, deposit holds, seller payouts, automated dispute settlement) on serverless edge functions and webhooks, removing manual payout and dispute handling.
• Built a real-time location-tracking and safety platform (Flutter, Firebase, Google Maps) with an event-driven geofencing pipeline that sends push alerts and escalates unacknowledged ones.
• Enforced multi-tenant data isolation with Postgres row-level security and Firestore RBAC rules (zero cross-tenant access in security tests), and set up TDD and CI gates across unit, widget, integration and end-to-end tests.
• Isolated third-party SDKs behind provider-agnostic interfaces, so database and auth swaps needed no UI changes.

• Flutter
• Supabase
• PostgreSQL
• Firebase
• Stripe Connect
• Clean Architecture
• Serverless
• Multi-tenancy
• TDD

Islamabad, Pakistan

• Scaled an IoT platform by integrating 1000+ smart mobility vehicles from two vendors into Go microservices over TCP with IMEI-based connection validation.
• Cut MTTR by 40% by migrating observability to Dynatrace, sped up responses by 25% by tuning slow database queries, and reduced IoT update latency by 10% by moving to Kafka events.
• Reduced financial losses by ~20% with a backend pre-authorization workflow, and delivered geo-fencing across the backend and the Next.js operations portal to meet regulatory requirements.
• Designed for graceful degradation over full failure and led incident response, cutting outage recovery time by 35% through staged rollouts, RFCs, Product Readiness Reviews and incident documentation.
• Raised the team's test coverage standard to 90%, shipped 5+ operations portal features, resolved 20+ critical bugs, and mentored and onboarded new engineers.

• Go
• Java
• Spring Boot
• Kafka
• Microservices
• IoT
• Dynatrace
• Next.js
• Incident response
• Feature flags
• TDD

Islamabad, Pakistan

• Devised and executed an automation strategy on AWS and GitHub Actions, establishing efficient build pipelines and cutting packaging time ~15%.
• Introduced coding standards across 6+ projects (linting, pre-commit hooks, sanity builds, contribution guidelines, TDD), reducing 50+ code smells and lifting coverage ~30%.
• Translated product requirements into RFCs and allocated work across the team, improving efficiency and reducing feature development time.
• Led the transition from a synchronous system architecture to an events-based framework, improving real-time data update speed ~15%.
• Migrated Git repositories from legacy on-prem systems to GitHub with sanity pipelines, branch protection, and code-owner configurations.

• Event-driven architecture
• AWS
• GitHub Actions
• CI/CD
• TDD
• RFCs
• Mentoring

Islamabad, Pakistan

• Transitioned 5+ monolithic modules to microservices, improving API response time ~25%.
• Led the revamp of core infrastructure services (authorization, configuration) to support a fast-growing user base of 50K+.
• Rebuilt the authentication mechanism and shipped a private NPM auth utility via GitLab CI/CD, adopted across 15+ backend services.
• Standardized logging and internal API documentation, cutting cloud costs 15%+, and designed a custom architecture for distributed transactions across microservices.
• Integrated system monitoring (New Relic, Sentry) for deeper insight into bottlenecks and service crashes.

• Node.js
• Microservices
• Distributed transactions
• GitLab CI/CD
• New Relic
• Sentry
• Authorization

Islamabad, Pakistan

• Used service workers to move data processing to the background, boosting UI performance ~20%.
• Developed and maintained the frontend for a scalable system handling large data volumes with Angular v8, REST APIs, and WebSockets.
• Built serverless APIs with Auth0 authentication using AWS Lambda and API Gateway.

• Angular
• WebSockets
• REST APIs
• AWS Lambda
• API Gateway
• Auth0
• Service workers

Wilfrid Laurier University · Canada

NUST CEME · Pakistan