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Sample document — fictional candidate for illustration purposes only. Your CV is prepared from your own record.

Lena Kowalski
Senior Site Reliability Engineer
lena.kowalski@email.com +49 151 234 56789 Berlin, Germany (Open to remote) github.com/lenakowalski linkedin.com/in/lenakowalski
Technical Stack
Go Python Kubernetes Terraform Kafka Prometheus OpenTelemetry GCP AWS Helm ArgoCD PostgreSQL Redis GitHub Actions
Professional Summary

Senior SRE with 6 years building and operating distributed systems at scale. Reduced p99 API latency from 880ms to 210ms across a 40-service mesh. Designed on-call frameworks that cut mean time to recovery by 62%. Proficient with AI-assisted development tooling (GitHub Copilot, Cursor) — shipping features 35% faster since adopting in 2024.

Experience
Senior Site Reliability Engineer Feb 2022 – Present
Zalando SE, Berlin
  • Owns reliability posture for 40 microservices processing 2.8M orders/day; maintained 99.97% uptime across 24 months.
  • Reduced p99 API latency from 880ms to 210ms by redesigning service mesh routing and introducing circuit-breaking policies.
  • Led migration of 18 services from VM-based deployments to GKE, cutting infrastructure cost by €340K/year.
  • Designed on-call runbooks and incident response framework; MTTR dropped from 42 min to 16 min over 12 months.
  • Mentored 3 junior SREs; all 3 passed Google Professional Cloud Architect exam within 6 months of joining team.
Software Engineer — Platform Aug 2020 – Jan 2022
N26 GmbH, Berlin
  • Built internal deployment pipeline in Go reducing release cycle from 3 days to 4 hours for 12 backend teams.
  • Instrumented 8 critical services with OpenTelemetry; surfaced 3 latency regressions before they reached production.
  • Automated certificate rotation across 200+ services, eliminating 4 outages caused by expired TLS certificates annually.
Software Engineer Sep 2018 – Jul 2020
Delivery Hero, Berlin
  • Developed order-tracking service in Go handling 120K events/sec; zero downtime since launch in Nov 2019.
  • Reduced PostgreSQL query time by 67% through index optimisation and query plan analysis on a 2.4TB dataset.
Open Source & Projects
  • k8s-cost-exporter — Prometheus exporter for Kubernetes cost attribution (420 GitHub stars)
  • go-slo-toolkit — SLO tracking library for Go services (contributor, 2 merged PRs)
  • Wrote "Zero-downtime database migrations with Go and Postgres" — 18K reads on personal blog
Certifications
  • Google Professional Cloud Architect — 2023
  • Certified Kubernetes Administrator (CKA) — 2022
  • AWS Solutions Architect Associate — 2021
Education
B.Sc. Computer Science Oct 2014 – Sep 2018
Technische Universität Berlin — Grade 1.4 (First Class equivalent)