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Aftab Mustafa

@aftabmustafa

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Software engineer specializing in backend microservices, cloud integrations, and production reliability.

India

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What I'm looking for

I seek backend/cloud roles where I can own integrations, improve production reliability, drive migrations, and grow in SRE/Platform responsibilities.

I am a software engineer with 3.5+ years at Optum focused on building and maintaining P1 backend micro-services for AI chatbots, driving large-scale integrations, migrations, and performance improvements. I led migrations from legacy systems, implemented Flask-to-FastAPI conversions for better concurrency, and designed Azure infrastructure with Terraform to improve observability and reliability.

I take ownership across the delivery lifecycle — from estimation and sprint planning to code reviews, automated testing, and incident triage — and have delivered zero rollbacks for several releases while meeting strict SLAs and high test coverage. I hold cloud certifications (Azure Fundamentals, AWS Cloud Practitioner, AWS AI Practitioner) and have hands-on experience with Python, JavaScript, Node.js, Express.Js, FastAPI, Azure, Github Actions, CI/CD tooling.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Optum

Feb 2026 - Present (4 months)

Owned P1 backend microservices for AI chatbots, migrating services (Flask→FastAPI) and integrations to improve concurrency and throughput while supporting up to 100 TPS and reducing P90 latency; led migrations that prevented outages for a P1 chatbot serving 20K advocates.

fastAPI Python Terraform JavaScript Azure RESTful APIs GitHub Actions