Hi, I’m Sajad Rahimi.

Technical Team Lead · Ima

• Led end-to-end development for a digital entertainment platform across Python, Java, Rust & Go.
• Owned Kubernetes operations & zero-downtime releases; built CI/CD with GitLab CI + Helm.
• p95 < 100 ms at peak; <1h downtime over two years; no critical prod bugs.

Senior Software Engineer · Toman

• Led a 5-dev Python backend team; delivered an Escrow service with >80% test coverage in <2 weeks.
• Reduced CRM contact by ~90% via resilient flows & automation.
• Designed SSO across services with Keycloak.

Technical Lead · Boomino

• Led 15-dev team (Python/Kotlin/JS); cut Dev↔Product comms time by ~80%.
• Ran red/blue-team exercise; fixed >40 security vulns; 70% fewer bug reports.
• Mentored 6 interns/juniors to higher technical levels.

Lead Backend Developer · Boomino

• Led 8-dev team; improved QA/user bug reports by 60–70%.
• Designed stack to fit product & team; built recommender with ~93% predictive accuracy.

Lead Backend Developer · Hamrah Academy

• Designed 12-service microservice architecture serving 3k+ concurrent users.
• Shipped VOD/live streaming for 2k live viewers; live chat handling 10k+ rps.
• Built CDN layer (MinIO/SeaweedFS/Nginx/FastAPI); −60% media load time.

Senior Backend Developer · Innowin

• Built behavior-based recommender (≥80% prediction accuracy) & follow-suggest system.
• Autoscaling with Docker; sustained ~200k req/s.

Backend Developer & DevOps Engineer · Innowin

• Delivered 500+ APIs on a monolith; resolved 100+ legacy bugs (−70% future reports).

Python Freelance Developer