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Technology resume example

Backend Developer resume example

A backend developer resume built around systems that carry load: what each service does, how much traffic it handles, and what got faster or cheaper.

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The example resume

Javier Ortega

Backend Developer

Backend developer with six years building APIs and data pipelines in Go and Python. I like boring, reliable systems: my last service handled 4,000 requests a second at 99.98% uptime.

Experience

Senior Backend Developer, Paymo 2021–now

Payments platform for 30,000 small businesses.

  • Rebuilt the payouts service in Go; p99 latency fell from 900 ms to 120 ms at 4,000 requests a second.
  • Moved nightly reconciliation from cron scripts to an event queue, cutting failed payouts by 70%.
  • Led on-call for a team of five and wrote the runbooks we still use.

Backend Developer, Datalia 2018–2021

Analytics start-up, Series A.

  • Built the ingestion API in Python (FastAPI) that took 2 billion events a month.
  • Cut the PostgreSQL bill by 40% by partitioning event tables and archiving to S3.

Education

BSc, Computer Science, Universidad Politécnica de Madrid 2018

Skills

  • Languages: Go, Python, SQL
  • Data: PostgreSQL, Redis, Kafka
  • Infrastructure: AWS, Docker, Kubernetes, Terraform