Sofia Kowalski
Backend Engineer
Portland, OR
Resume & Portfolio
Skills
About
Sofia is a backend engineer with 7 years of experience specializing in Go and Kubernetes. She builds high-performance, scalable distributed systems and has deep expertise in container orchestration, service mesh architectures, and observability.
Previously at Datadog and Cloudflare, Sofia designed and maintained critical infrastructure serving billions of requests. She is passionate about reliability engineering, open-source tooling, and writing clean, well-tested code. She is actively looking for senior backend or infrastructure roles at companies pushing the boundaries of scale.
Experience
- Designed and built gRPC-based microservices in Go processing 2B+ events per day for the metrics pipeline.
- Led the migration of legacy services to Kubernetes, improving deployment frequency by 5x and reducing incidents by 40%.
- Implemented distributed tracing and monitoring dashboards that reduced mean time to resolution by 60%.
- Built and maintained edge computing services in Go, handling 25M+ requests per second globally.
- Designed PostgreSQL schemas and query optimizations that reduced p99 latency by 35%.
- Contributed to Cloudflare’s open-source projects and internal developer tooling.
- Developed REST APIs and background workers for an e-commerce platform using Python and Redis.
- Set up Docker-based development environments and CI/CD pipelines for the engineering team.
Education
Details
Role match breakdown
Engagement
Pipeline position
Resume summary
- Deep backend engineering experience with Go and Kubernetes at Datadog and Cloudflare.
- Led infrastructure migrations and built high-performance microservices at massive scale.
- Strong observability and reliability engineering track record.
Cover letter
I am excited to apply for this role. My background in building high-performance backend systems in Go aligns closely with the problems your team is solving. I have led infrastructure projects that improved reliability and deployment frequency significantly. I look forward to bringing my experience to your team.
Application timeline
Recruiter notes
Excellent backend profile. Go and Kubernetes expertise is a strong match. Fast-track to technical interview.