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Omer Haroon

@omerharoon

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I build globally distributed backend platforms and high-volume data services for Microsoft 365.

Pakistan

Message

At Microsoft, I build globally distributed, graph-based database infrastructure for Microsoft 365 and Copilot, enabling multi-geo data retrieval with sub-100ms lookups. I own C# and .NET Framework services end to end, from architecture through production monitoring, supporting billions of queries per month.

I've also built data platforms and full-stack products at Unacast, Educative, and Strategic Systems International using Python, Java, React, Google Cloud, AWS, BigQuery, and Spring. I focus on performance, observability, incident response, and practical agent-driven development workflows with GitHub Copilot and Claude Code.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer II

Current

Microsoft

Apr 2023 - Present (3 years 5 months)

Designed and developed a globally distributed, graph-based database for Microsoft 365 services to enable sub-100ms lookup of data across M365. Engineered C# and .NET Framework backend services handling billions of queries per month, supporting Microsoft 365 Copilot.

C#.NET Framework Distributed Systems Graph Databases Performance Optimization Telemetry Incident Response GitHub Co Pilot Copilot CLI

Software Engineer

Unacast AS

Jan 2022 - Mar 2023 (1 year 2 months)

Improved and maintained data-ingestion and delivery pipelines for location-data products. Developed Python, Java, and Go applications using BigQuery, Cloud Storage, Cloud Composer, and Cloud Run.

Python Java Go BigQuery Cloud Storage Cloud Composer Cloud Run Airflow Docker React

Software Engineer

Educative Inc.

Jun 2020 - Dec 2021 (1 year 6 months)

Delivered Python 3 REST APIs and full-stack features for an interactive learning platform. Implemented backend functionality using Google Cloud Datastore, Cloud Storage, BigQuery, and task queues.

Python REST APIs React Next.js Redux Datastore Cloud Storage BigQuery Jest Enzyme Selenium

Software Engineer

Strategic Systems International

Jun 2018 - Mar 2020 (1 year 9 months)

Built Java and Spring framework microservices and REST APIs for Flywheel Digital's marketing analytics application. Wrote complex SQL queries against MySQL and Amazon Redshift and used AWS services.