John Doe

Senior Software Engineer / Platform

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Summary

Software engineer with 9+ years building backend systems and developer platforms for e-commerce and fintech. I care about reliable services, fast feedback loops and helping teams ship with confidence.

Experience

Northwind Commerce

Amsterdam, Netherlands

Senior Software Engineer

Mar 2022 – Present
  • Led the migration of the checkout platform to an event-driven architecture, reducing order processing latency by 40%.
  • Introduced service level objectives and on-call runbooks across 6 backend teams.
  • Mentored 4 engineers and ran the internal backend guild.

Software Engineer

Jan 2019 – Mar 2022
  • Built the internal deployment pipeline used by 30+ services.
  • Designed the product catalogue search API serving 2,000 requests per second at peak.

Contoso Payments

Berlin, Germany

Backend Engineer

Jun 2016 – Dec 2018
  • Developed payment reconciliation services and integrations with 3 acquiring banks.
  • Improved test coverage of the core ledger from 45% to 85%.

Projects

Open source feature flag service

Built and maintain a lightweight feature flag service in Go, used by several small teams for gradual rollouts and kill switches.

Skills

Languages
Go · TypeScript · Python · SQL
Platform
Kubernetes · Terraform · AWS · PostgreSQL · Kafka
Practices
System design · Observability · CI/CD · Code review

Education

Master's in Computer Science

2014 – 2016

University of Amsterdam, Netherlands

Thesis on distributed consensus protocols

Bachelor's in Computer Science

2011 – 2014

Delft University of Technology, Netherlands

Recognition

Speaker, GopherCon EU

Talk on event-driven checkout systems, 2024

Languages

English · Dutch · German