Muhammad Abdullah

▸ Built the AWS Bedrock insights feature at Xref from scratch, a FastAPI pipeline that reads Pulse survey data and spits out HR performance summaries automatically. Before this, someone had to do that manually. Now it runs for 10,000+ daily users. ▸ Migrated a 10+ year Django monolith into 5 independently deployable microservices. Releases that used to require coordinating across the whole codebase became isolated deploys. ▸ Cut API response times by 40% across 15+ endpoints. Found the slow spots in PostgreSQL with Datadog, rewrote the ORM queries, added indexes where they actually mattered. ▸ Built the async backbone, Lambda, SQS, Redis that now processes 50,000+ tasks daily. Report generation, email delivery, scheduled workflows. None of it blocks the user. ▸ Took test coverage from 75% to 90%+ with pytest. Production incidents fell 35% in the following six months. Not a coincidence. ▸ Rebuilt the Docker/Kubernetes CI/CD pipelines and cut release cycles by 40%. The main fix was removing manual steps that kept getting skipped and causing environment drift. ▸ Designed a shared Angular component library 15+ components, Storybook docs, used across the whole frontend team. Code redundancy dropped 40%, load times improved 25%. ▸ Promoted to senior code approver across backend and frontend. Reviewed production PRs daily and mentored 3 junior engineers — primarily on TypeScript, Angular, and what a good review actually looks like.

▸ Integrated OpenAI APIs for writing assistance — autocomplete, grammar suggestions, content generation. Also wired it into QA test generation, which cut manual QA effort by 30%. First production LLM integration I'd shipped. ▸ Built Version History using PostgreSQL JSONB diff storage. The feature stuck: Squibler tied it directly to a 12% revenue increase from better writer retention. ▸ Designed and shipped the Document Sharing system — Django, GraphQL, NgRx, real-time sync, granular permission controls — used by 3,000+ active writers. ▸ Led the Django 2.2 → 3.2 upgrade with zero downtime. Rewrote deprecated APIs, overhauled async views, removed 5,000+ lines of dead code. Smaller codebase, same features. ▸ Eliminated 80% of database anomalies by enforcing foreign keys, migration constraints, and validation rules across the schema. The kind of fix that's invisible once it's done.

▸ Joined as an intern, promoted to Associate Software Engineer within three months. ▸ Built a content recommendation engine in Python and Django using ML APIs — first production ML system I shipped. User engagement increased 13%. ▸ Shipped Django REST Framework APIs integrated with the Gmail API, handling real-time email processing across 10,000+ mailboxes. ▸ Cut API response times by 33% by introducing Celery + Redis for async task execution and eliminating N+1 query patterns with select_related and prefetch_related.