Hi, I'mWaseem& I build thingsthat scale.
I'm the tech lead for a team of four at Tajir (YC W20), building the order-to-delivery platform behind 100K+ stores across Pakistan. Backend, web, or mobile — whatever the problem needs.
About Me
I'm a software engineer who likes owning problems end to end. At Tajir (YC W20) I lead a team of four on the order-to-delivery platform serving 100K+ stores — which in practice means Python services, React dashboards, and Android and Flutter apps, often in the same week. I studied CS at LUMS.
I care more about systems that hold up in production than clever code, and lately a lot of that has meant shipping real LLM pipelines rather than demos. Outside of work I contribute to open source — PandasAI and ng-select — and published research at ESORICS 2023.
Experience
Tajir
YC W20B2B distribution platform serving 100K+ storesLahore, PK
Senior Software Engineer
Dec 2023 — Present- Tech lead for a team of 4 engineers building Tajir's order-to-delivery platform (Python, React/TypeScript, Kotlin Android), serving 30K+ daily active retailers and processing 10K+ orders a day
- Took delivery from 6 to 7 days a week, rebuilding shift planning, vehicle assignment, and dispatch to support it; Sundays now carry 14% of weekly orders with no loss in weekday volume
- Automated brand labeling across an 18K+ SKU catalog with an LLM pipeline, from prototype to production
- Rebuilt the retailer app in Flutter in 3 weeks using agentic coding workflows, shipping Tajir's first iOS app
Software Engineer
June 2022 — Dec 2023- Built fleet GPS tracking and route optimization, cutting fuel spend about 15% and lifting delivery acceptance 6%
- Automated Tajir's vendor payments, integrating QuickBooks and building withholding-tax and clearance handling
Elevate Security
Acquired by MimecastHuman risk management platformRemote (US)
Software Engineer
Sept 2021 — May 2022- Cut p95 API response times 30% by adding Redis caching and rebuilding the platform's legacy data pipelines
- Owned production support for enterprise customers, taking issues from first report to root-cause fix
Projects
Writing
Optimizing Delivery Routes at Scale: GPS Tracking & Zone-Based Routing
Engineering GPS tracking and route optimization that cut fuel spend about 15% across a fleet serving 100K+ stores.
Domain-Driven Design in Practice: Lessons from Scaling a B2B Platform
How we structured a codebase serving 30K+ daily users using bounded contexts, aggregates, and event-driven architecture.
SoK: A Tale of Reduction, Security, and Correctness
Published at ESORICS 2023. Co-authored with SRI International, Georgia Tech, Stony Brook & U. of Arizona — evaluating C/C++ software debloating tools.