Hassan Raza — Backend & Distributed Systems Engineer
I'm a software engineer focused on backend systems that stay correct under load: real-time telemetry pipelines, event-driven services, and the data models and APIs on top of them. At Tenderd (YC S18) I led delivery of the module that onboarded Saudi Aramco, rebuilt IoT telemetry ingestion on Kafka with zero event loss, and turned raw device pings into operator and utilization metrics that didn't exist before. Before that I led backend on a small team at Clozer and spent a year on high-scale systems at Bykea (5M+ users). I care about data you can trust, systems that hold up in production, and shipping things that work in front of real customers.
- Real-time telemetry & event-driven systems (Kafka)
- Backend architecture & data modeling
- Enterprise delivery & client-facing engineering
- API design and system reliability
- Applied AI over operational data (in progress)
Software Engineer
Fleet-management platform for tracking cost, utilization, safety, and sustainability across heavy equipment fleets.
- Led end-to-end delivery of the Booking module — built from scratch and shipped in under two months with a 7-engineer team — to onboard Saudi Aramco, who manage ~200 pieces of equipment through it.
- Rebuilt telemetry ingestion from a third-party device server: migrated the CDC → Kafka pipeline to a new schema with zero event loss, and fixed pre-existing Kafka reliability bugs (uncommitted offsets, poison-message handling).
- Built operator and shift timesheets from scratch, deriving utilization from device-to-equipment attachment and raw pings; added engine-on-hours detection for more accurate metrics.
- Rebuilt the Safety module (v2): redesigned violation categorization and built the APIs and dashboards; added real-time WhatsApp and email alerting for violations.
- Cut a core reporting query from 60s+ to 2–3s, and moved editable frontend-exposed reports into the backend to close security holes.
Software Development Lead (Contract)
Influencer site-generation and music-distribution platform.
- Sole backend engineer on a 3-person team — owned all backend architecture in Go and drove features end-to-end.
- Built a service resolving artists' tracks across Spotify, Apple Music, Deezer, and SoundCloud, reconciling inconsistent metadata into a single view.
- Built release scheduling/automation, instrumented ~150 analytics events, and supported 50k+ daily requests; directed frontend and mentored a junior developer.
Backend / Full-Stack — Corel, Cofeapp, Zippia & others
Full-time contract and consulting work across several clients, often concurrently.
- Corel Corporation — built invoice PDF generation on Corel Vector, improved features, and resolved 15+ bugs with testing.
- Led full product infrastructure (mobile, web, admin, backend, CRM) for the Send-me-a-Pro project.
- Delivered contract backend/full-stack work for Cofeapp (UAE) and a US recruiting platform (Zippia).
Senior Software Engineer
All-in-one app for transportation, logistics, and cash-on-delivery payments, serving 5M+ users.
- Migrated internal services from RabbitMQ to Kafka for event sourcing, cutting operational data loss to near zero.
- Built a trip-state event-logging service (Fastify + PostgreSQL) used downstream for fraud detection; audited Redis usage and cut cache load by nearly 50%.
- Built an internal CSR support system full-stack; ran sprints with a 95% on-time delivery rate and mentored engineers.
Software Engineer
Digital agency.
- Built a web annotator tool (Vue front end, Node back end); hands-on with NestJS and React Native.
Backend Developer
Digital agency building consumer products.
- Built the backend for a ride-sharing app (Node, MongoDB, SSE) and its React admin panel.
- Built a MERN Classroom product with WebRTC video calling; wrote an AWS Lambda to start/stop EC2 on call events to cut cost.
Full Stack Developer
Software consultancy.
- Built web applications; early work with React and NestJS.