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Bilal SharifBS
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Bilal Sharif

@bilalsharif

Senior backend & full-stack engineer building Python/Go systems and AI agents with measurable performance gains.

Pakistan
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What I'm looking for

I’m open to remote/contract roles with 5 to 6 hours of daily overlap with the UK and EU (4 with US East). I want to own backend systems end to end—optimize latency at scale and build LLM/multi-agent workflows—without hand-holding.

I’m a Senior Backend & Full-Stack Engineer with 5 years shipping and scaling production systems for startups. I own backends end to end—Python/Django and Go services—while staying hands-on across reliability, performance, and delivery.

I’ve driven major runtime wins: I served 500M+ monthly API requests and cut p95 latency from 900ms to 220ms using query optimization, multi-layer caching, and connection pooling. I also re-architected my real-time WebSocket stack (Django Channels with Daphne) to handle 30K concurrent connections, reducing response time from ~5,000ms to ~100ms.

I’m equally focused on pragmatic infrastructure and cost control. I replaced managed load balancing and autoscaling with a custom Caddy-based stack to cut monthly DevOps spend, remove vendor lock-in, and keep zero-downtime deploys—while maintaining observability and fault tolerance through Celery pipelines and retry/dead-letter strategies.

On the AI side, I build LLM and multi-agent systems end to end: RAG (Pinecone/pgvector), agent orchestration, and fine-tuned SLMs with self-hosted image/video generation models (Qwen, LTX) on GPU infrastructure to avoid recurring third-party API costs. I operate as an early engineer with on-call and incident response, mentor juniors, and ship with tools like Claude Code, Codex, and Cursor.

Experience

Work history, roles, and key accomplishments

DA
Current

Senior Software Engineer

DarkBytes

Sep 2024 - Present (2 years 1 month)

Own the Django/DRF and Go backend behind ChatsX at 10,000 requests per second peak, cutting p95 latency from 900 ms to 220 ms. Rearchitected WebSockets for 50,000 concurrent connections. Built async pipelines for 300,000 background jobs, agentic LLM systems on LangGraph and CrewAI, self hosted FLUX, LTX-2.3 and Qwen on RunPod GPUs, and a self built Caddy autoscaler.

VI

Senior Software Engineer

Vinnyandco

Sep 2023 - Aug 2024 (11 months)

Built a white label, multi tenant ecommerce platform on Django and React serving multiple brands with per tenant theming and data isolation. Built the React and Next.js operations dashboard. Built a RAG system with hybrid retrieval and reranking, cutting brand strategy research by up to 70 percent. Owned the multi tenant architecture end to end.

AU

Software Engineer

AurLab

Sep 2021 - Aug 2023 (1 year 11 months)

Cut API query time by 40 percent through N+1 fixes, composite indexing and connection pooling, and CI/CD deploys from 25 to 7 minutes with GitHub Actions. Built a Pinecone and OpenAI RAG pipeline saving 30 analyst hours per month. Implemented Stripe and NOWPayments integrations. Built Playwright session based auto login, systemd units and health check scripts.

Education

Degrees, certifications, and relevant coursework

Superior University, Lahore logoSL

Superior University, Lahore

Bachelor of Science, Computer Science

Completed a Bachelor of Science in Computer Science at Superior University in Lahore, Pakistan, in 2024.

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