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Sourabh Singh

@sourabhsingh1

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Senior software engineer specializing in scalable Python backend systems.

India

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What I'm looking for

I seek a hands-on senior engineering role building scalable backend platforms, leading migrations, mentoring teams, and delivering measurable system reliability and performance improvements.

I am a Senior Software Engineer with 12+ years building and scaling distributed backend systems across global MNCs and high-growth startups. I focus on Python, gRPC, system design, and delivering reliable, maintainable services.

At Google I served as a gRPC Python maintainer and core contributor, driving adoption and mentoring contributors to ensure long-term maintainability. At Salesforce I led org-wide security monitoring and migrated 200+ Python repositories to a unified deployment model.

Previously I improved product reliability and analytics at Walmart and Microsoft by building large reporting pipelines, improving performance, and automating curation workflows. In startups I designed ETL systems, optimized booking flows, and shipped customer-facing services that scaled to millions of users.

I mentor engineers, lead cross-team migrations, and enjoy solving system-design challenges that balance scale, reliability, and developer productivity. I look for roles where I can drive technical direction and deliver measurable impact.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Google

Jan 2024 - Jan 2025 (1 year)

Maintained gRPC Python core, drove adoption of gRPC within the Python ecosystem, mentored contributors, and improved long-term maintainability of Python gRPC tooling.

Python gRPC Open Source Maintenance System Design Mentoring Code Review CI CD API Design

Freelance Developer

Freelance

Jan 2023 - Jan 2024 (1 year)

Led integration of insurance APIs with compliance to industry standards and regulatory requirements, coordinating with stakeholders to deliver secure, auditable integrations.

API Integration Python REST & Compliance & Security Testing Documentation

Lead Member Technical Staff

Salesforce

Jan 2021 - Jan 2023 (2 years)

Implemented org-wide security monitoring across 200+ repositories and directed migration of 200+ Python repositories across 25+ teams to a unified deployment model on latest Python.

Python Security Monitoring Repository Migration DevOps CI CD Automation)System Design

Senior Software Developer

Walmart

Jan 2019 - Jan 2021 (2 years)

Built a reporting pipeline handling 4M+ items enabling analytics for 20K–30K daily uploads and reduced curation effort by 70% through pipeline automation and analytics tooling.

Python ETL Data Pipelines Analytics Automation)PostgreSQL Elasticsearch Performance Optimization

Software Developer II

Microsoft

Jan 2018 - Jan 2019 (1 year)

Improved Teams performance by reducing boot time by 30% and resolved major memory leaks; contributed to ingestion services syncing on-prem data to cloud at ~10+ Mbps.

Performance Optimization Cloud Sync C++Python Monitoring Diagnostics

Senior Software Developer

Treebo

Jan 2016 - Jan 2017 (1 year)

Designed ETL solutions processing 1.2M+ events/day, migrated inventory services in-house, and optimized booking flow architecture to significantly lower failure rates.