I build high-scale, performance-critical systems that stay boring in production.
10+ years of experience designing and shipping cloud platforms used by hundreds of thousands of users across multiple regions.

My work usually lives at the intersection of backend systems, data, and infrastructure—with enough frontend fluency to keep products fast and humane.

High-throughput ingestion, event-driven architectures, batching, deduplication, and cost-aware scaling.

Turning 10-second queries into sub-200ms paths. Measuring first, fixing second, bragging never.

Zero-data-loss pipelines, idempotency, graceful degradation, and observability-first design.

Choosing the right tool, not the fashionable one. PostgreSQL + ClickHouse beats magic every time.

TypeScript, JavaScript, SQL, Node.js, Lua, Python

Node.js, Bun, NestJS, Kafka, PostgreSQL, TimescaleDB, ClickHouse, Redis, MongoDB

React, Next.js, TypeScript, TailwindCSS, shadcn/ui

AWS, GCP, Docker, Kubernetes, Terraform, GitHub Actions, Rancher, Traefik

Event-driven architecture, microservices, batching, schema validation, CI/CD, TDD

• Make the database do the work
• Measure before optimizing
• Prefer boring, explainable systems
• Build tooling that helps the next engineer
• Optimize for long-term operability, not short-term cleverness

I care deeply about systems behaving correctly under pressure—even if users never know my name.

I started programming at age 9 trying (and failing) to build games.
I never stopped being curious about how things work, only the scale got bigger.

Over time, I’ve worked across frontend, backend, and infrastructure—which helps me design systems that are both technically sound and practical to maintain.

Lately, I’ve been especially interested in AI-assisted systems, embeddings, and data-driven product behavior—where correctness and scale really matter.

• 📧 Email: hlltvfk@gmail.com
• 💼 LinkedIn: linkedin.com/in/teyfik
• 🧑‍💻 GitHub: github.com/teyfix
• 📍 Istanbul, Turkey

I enjoy building systems that stay quiet at 3 a.m. That’s usually a good sign.