Muhammad Anees

Full Stack Developer

DPS

Aug 2024 - Present • 1 yr 9 mos

Managing a backend team of 3–4 developers, conducting code reviews, mentoring junior engineers, and ensuring scalable, maintainable, and production-ready solutions. • Resolved Redis connection pool exhaustion across 600K+ concurrent sessions by implementing connection multiplexing strategy, eliminating production outages during peak traffic load. • Designed and deployed bulk push notification scheduler processing 600K–700K notifications per 7–8 minute cycle with multilingual support, platform-specific targeting (iOS/Android), and media attachments. • Built CI/CD pipelines using Docker and Jenkins with exact PreProd-to-Prod image promotion post QA/UAT sign-off, reducing deployment incidents by 90%. • Developed static and dynamic QR-based peer-to-peer payment flows using TLV encoding for secure in-app transactions compliant with telecom payment standards. • Integrated OTAPP bus ticketing REST API enabling real-time seat selection, booking, and dynamic fare calculation across 100+ routes within the Mixx Tanzania mobile application. • Engineered core telecom use cases: SIM registration, SIM swap, re-identification, and airtime/bundle subscription integrated with legacy telco infrastructure via WSO2 API Gateway. • Architected B2B and B2C onboarding registration flows including Kinara registrations, bulk enterprise onboarding, and multi-tenant workflows for Tanzania market deployment. • Conducted regular code reviews, mentored junior engineers on scalable design patterns, and enforced clean, testable, and maintainable code standards across backend services. PS: Company name is actually DPL but as it was not appearing in the list so added DPS.