Open to opportunities

Umar Nasir

@umarnasir2

Message

I build production Python SaaS platforms, APIs, and AI-powered workflows from backend architecture through deployment.

United Kingdom

Message

What I'm looking for

I'm looking for UK or remote roles where I can build and ship production SaaS systems, Python backends, APIs, and AI-powered workflows end-to-end.

I've delivered four production platforms end-to-end for independent clients: Email Vault, SourceHawk, CatAutoTech, and Scriptovate. My work spans backend architecture, REST APIs, authentication, subscriptions, background workers, webhooks, deployments, and technical handover.

At Bestway Europe, I built multi-tenant CRM and SaaS backends for more than five business entities using Python, Django, PostgreSQL, Redis, and Celery. I reduced API response time by 40% and order-processing time by 30% on the Miami Bikes platform.

For Email Vault, I built ingestion, archival, and search services for more than one million email records, delivering sub-second Elasticsearch retrieval. I also build AI-assisted products using Claude API and OpenAI API, including bounded browser automation and writing workflows.

I ship services through Docker, AWS, Kubernetes, and CI/CD pipelines, then support them with structured logging, monitoring, and incident resolution. Where needed, I build focused React and Next.js interfaces around backend-driven product flows.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Independent Client Delivery via Upwork

Jan 2024 - Present (2 years 8 months)

Designed and delivered backend systems using Django, FastAPI, and Flask, including REST APIs, database schemas, authentication, subscriptions, background workers, webhooks, and third-party integrations for SaaS and automation products. Deployed services to Docker, AWS, and Kubernetes environments, and diagnosed production issues through structured logs, monitoring, and controlled releases.

Python Django fastAPI Flask REST APIs PostgreSQL Redis Celery Docker AWS Kubernetes React Next.js JavaScript TypeScript CI CD WebSockets Authentication RBAC Background Jobs Logging Monitoring

Senior Python AI Developer

Bestway Europe

Jan 2022 - Feb 2024 (2 years 1 month)

Architected and developed multi-tenant CRM and SaaS backends supporting more than five business entities, using Python, Django, PostgreSQL, Redis, and Celery. Built REST APIs, role-based access controls, Stripe payment flows, and inventory, order, and customer workflows used by operational teams.