Albara Hassan Senior Backend Engineer

Senior Backend Engineer, Kinly

UK benefits platform: Python, FastAPI, Azure, Cosmos DB, OpenAI

• Own the knowledge-base RAG pipeline end to end (Azure Functions ingestion and embedding, Cosmos DB vector search, OpenAI-backed FastAPI): 500+ documents indexed, answers in under 3 s.
• Scheduled ingestion for freshness: hourly incremental ingest plus a weekly full resync and external web crawl, staggered into the lowest-traffic window.
• Eliminated latency spikes for ~270 users by tuning the API and adding a second uvicorn worker: windows with p95 over 2 s fell from up to 13 a day to 0, business-hour p95 from 1.0-1.7 s to 0.5-0.7 s.
• Cut requests over 3 s by 80%+ (up to 3,900 a day down to 469), health-check 503s from up to 30 a day to 0, and autoscale instance churn by half, with no new errors.
• Took the slowest endpoints from 20 s to under 2 s by eliminating N+1 queries and tuning database queries and async I/O, guarded by a 1,400+ test pytest suite.
• Shipped eligibility-form prepopulation from website enquiries via HubSpot and Cosmos DB: agent-open trigger, config-driven mappings across 8 field groups, and freeze rules that protect agent edits from automation.
• Authored the post-incident review for a 65-minute production outage caused by Key Vault references resolving empty after a slot swap, with root cause, recovery runbook and 12 corrective actions.

A production RAG pipeline for a UK benefits platform From 20-second endpoints to a 0.5 to 0.7 s p95

Full Stack Engineer, Rayna Corp

TypeScript, Express, TypeORM, React, AWS

• Built a dedicated AWS Lambda for TypeORM migrations that runs idempotently at 3 points: every staging deploy, the end of the nightly replication Step Function, and behind an approval gate in production.
• Moved migrations off an API Gateway endpoint capped at 30 seconds onto Lambda's 15-minute window, so long schema changes stopped timing out.
• Redesigned onboarding for law-firm admin users, replacing two conflicting verification and password emails with a single verify-and-set-password flow.
• Shipped platform features across React and Express, including cross-tab cache synchronization and bulk provider connection management.

Database migrations that stopped timing out

Software Engineer, Epiisa

• E-Advokat (legal AI agent): built a LangChain and ChromaDB RAG pipeline that answers legal questions with citation-level attribution, with OCR ingestion of statutes and court rulings served through FastAPI.
• CueLoop (AI email and calendar assistant): built FastAPI services on Google APIs via OAuth2, with LLM draft generation, meeting detection and embedding-based semantic search over email threads.
• Engineered an asyncio task engine for minute-level polling and concurrent background jobs across parsing, scheduling and indexing.
• Built secure multi-tenant FastAPI services with PostgreSQL and MongoDB schemas, token-based authentication and RBAC.
• Designed a dynamic-programming pricing engine that optimizes rental rates from regional usage patterns (Vroomski).
• Ran CI/CD with Docker Compose and GitHub Actions, maintained pytest coverage, and delivered Next.js frontends where products needed them.

Legal RAG and an AI email assistant

Full Stack Engineer (Contract), Rapidfacture GmbH

• Built an e-commerce platform for industrial clients with real-time quoting, part configuration and inventory synchronization.
• Automated backend workflows in Python, including CAD file parsing, PDF generation and email handling.
• Extended Node.js APIs and a custom CRM, replacing brittle legacy logic with modular, testable services.

Software Engineer, Epifront

• Led development of Spacerra, a hosting automation platform offering no-code deployment and generated CI/CD pipelines.
• Built modular FastAPI services with PostgreSQL and MongoDB schemas, authentication and RBAC.
• Built containerized environments and Git-triggered Docker pipelines with infrastructure-as-code tooling.