Rasmus Kockum
Senior Engineer & Tech Lead
I build Java backends handling 20k+ RPS, React frontends built to last, and the cloud infrastructure between them. I tune database queries, design CI/CD pipelines, and know the difference between a real microservice architecture and a distributed monolith. I have held customer search for 20 million users to a 5 ms latency ceiling on Oracle.
How I can help ↓Three areas where I make a difference.
Senior Engineer
I write the code others avoid: high-throughput services in Java and Go, React frontends that hold up under real load, database query optimization, and infrastructure that stays up. I have tuned systems past 20k RPS and know which levers to pull, wherever in the stack they are.
CI/CD & AI Workflow Coach
I set up the pipelines, testing strategies, and review processes that let teams merge AI-generated code with confidence. If your team wants to move fast with AI without breaking production, I build the guardrails that make it possible.
Software Architect
I design systems that stay decoupled under real-world constraints. Having seen both, I know the difference between a true microservice architecture and a distributed monolith wearing microservice clothing. I have served on architecture forums since 2016, shaping technical direction at the organizational level. I architect for EU data residency and GDPR from day one, not as a later bolt-on.
What I work with.
The tools and platforms I reach for when building systems that need to scale, stay reliable, and ship fast.
Projects I have led.
Custom platform for a CNC machine company
Acting as CTO and lead engineer for a company that manufactures and sells CNC machines. Designed and built a custom platform from the ground up: an integrated CRM, e-commerce storefront, product configurator, and order management system.
Customer service platform for airlines
Built a new customer service system from scratch for airlines. Designed the service boundaries, stood up the cloud infrastructure on Azure, and led the team through delivery. The system handles agent workflows, passenger data, and real-time case management at high reliability.
Cloud native Passenger Service System
Led development of a new PSS built for high availability and performance. Designed a cloud native architecture on Azure, defined the CI/CD pipeline, and drove the team to meet strict airline industry uptime and latency standards.
Airline alliance migration in 8 months
Switched an airline from one global alliance to another, end to end. Coordinated across reservation systems, departure control, and passenger handling on a tight deadline with zero room for downtime.
Stock portfolio recommendation platform
Architected, built and deployed a platform for stock portfolio recommendations. Implemented real-time stock price updates with websockets and a React frontend.
Customer search at 20M users, capped at 5ms
Led the team building a customer search system serving 20 million users with a hard latency ceiling of 5 milliseconds. Tuned the Oracle data model, indexing, and query paths to keep worst-case response times flat under load.
Core banking migration to SAP
Led migration from a legacy core banking system to SAP, coordinating across multiple teams in the organization. Managed the technical integration work while keeping existing operations running throughout the transition.
Breaking out a monolith, piece by piece
Led the first extraction from a large monolithic application into independent services. The approach proved itself: subsequent extractions followed across multiple teams, cutting deployment cycles and enabling parallel feature development.
Selected writing.
- May 31, 2026
Shipping AI-Generated Code with Confidence
The question with AI is no longer whether an agent can write the code. It's whether you can ship it. Here are the automated gates that let a team merge AI-written features without breaking production: OpenAPI breaking-change detection, SpotBugs, enforced coverage, and integration tests recorded from real third-party calls.
- February 17, 2026
Skepp — EU Infrastructure in One PR, and Why I Recommend It
I tested Skepp — a service that analyzes your repo, generates production Terraform and CI/CD, and opens a single PR to deploy your app to your own Scaleway account in the EU. Here's why I recommend it.
- December 17, 2024
The Perils of Premature Abstraction: When Code Duplication Isn't a Problem
Understanding why abstracting and centralizing duplicated code too early can be restrictive and how to avoid premature abstraction.
Interested in working together?
I'm available now for advisory, architecture, and review work, and open to full-time engagements from Q1 2027. The best way to reach me is email.