Yigitalp Ertem

Hey, I'm Yigitalp

I'm a freelance software engineer & consultant in Berlin. I design, build, and maintain data-intensive web applications with a focus on reliable backends, clean APIs, and pragmatic delivery.

  • 15+ years of experience across Java/Spring, .NET, Python, TypeScript/Node, and Nuxt/Vue
  • Backend-first, DevOps literate, comfortable with Postgres, Elasticsearch, Docker/Kubernetes, Cloud
  • Since 2024: applied ML/LLM integrations for real products

I describe myself as pragmatic, modest, and product-minded. I’ve spent most of my career in startup environments shipping and maintaining real systems under real constraints. I care about quick prototyping, strong ownership, and maintainability.


What I do

  • Backend & APIs: greenfield services, refactors, performance work, observability
  • Systems & Data: relational modeling, search, ETL, analytics, caching strategies
  • Platform/DevOps: CI/CD, containers, Kubernetes, IaC basics, cost/ops optimization
  • Applied LLMs: retrieval and operations
  • Product help: roadmapping, scoping, engineering leadership

See projects →

View CV →


Recent/typical stack

Java + Spring Boot, .NET Core, Python, Node/TypeScript, Postgres, Elasticsearch, Redis, Docker/K8s, AWS, Nuxt/Vue, Supabase


Work with me

  • Based in Berlin, available remote or on-site (EU)
  • Flexible: project-based, or hourly/daily work
  • Prefer clear scopes, measurable outcomes, and respectful collaboration

Explore

  • CV — experience, education, skills
  • Projects — shipped work, code, case notes