Ravyar Tahir

IQ Labs — Sulaymaniyah, Iraq

Promoted to Senior, effective June 2025

• Built a real-time vehicle tracking system (buses/taxis) using Go, WebSockets, and PostGIS, handling 5,000+ concurrent connections with <200ms P95 latency and zero data loss under peak load.
• Designed and implemented a production ISP billing system with RADIUS integration, enabling real-time provisioning and automated subscription enforcement, eliminating manual workflows.
• Engineered and productionized an ML/RAG platform using Milvus vector database, custom embeddings, and re-ranking models: reduced response latency from ~2s to <400ms, introduced streaming SSE responses for real-time UX, and replaced REST with gRPC between Go and Python services.
• Provisioned and managed AWS EC2 GPU instances to host ML models, significantly accelerating inference compared to CPU environments.
• Built a vendor-agnostic voucher and billing middleware integrating Microsoft Dynamics and external providers: reduced reconciliation workload by ~70% and cut vendor onboarding time from weeks to hours.
• Delivered multiple production systems including: nationwide IoT telemetry ingestion pipeline (air quality sensors), automated KYC verification backend, and full backend for Kurdim (language learning platform).

Neofinity & Client Projects — Fully Remote (Part-time / Contract)

• Managed end-to-end backend development for various client projects, transitioning legacy PHP applications to modern Python and Go architectures.
• Migrated the Kurdoc platform (later rebranded as Gloctor) from PHP to Python, then rewrote core services in Go to resolve performance bottlenecks and improve API response times.
• Built custom POS and retail systems from the ground up, implementing real-time inventory tracking, IMEI-based device management, and financial reporting integrations.