Lukas Krug
Freelance software architect with over 15 years of experience.
Rust, Kubernetes, AWS and more.
Projects I was involved in
Just an excerpt. I had a leading role in all of these.
A platform to build SEO optimized websites. APIs and internal tooling built in Rust, frontend in Typescript (with Next.js), CockroachDB and Redis as databases.
Video-on-demand portal, including livestreaming for a German sports league. Backend in PHP (Laravel), performance critical code in Rust, custom Kubernetes cluster, serverless Single Sign-On solution running on AWS (Lambda, DynamoDB, Cognito, SNS).
A platform providing tools for internal software development of a company. Multi-cloud Kubernetes cluster, running software for monitoring, CI/CD pipelines and managing other Kubernetes clusters. The cluster itself is managed with Terraform and Ansible, the machines are connected on a private network via WireGuard.
WebRTC-based video streaming system for video conferences, webinars etc. Backend in Java (Spring Boot), frontend in Typescript, Postgres as primary database. The system is used by several companies and handles hundreds of terabytes of traffic each month. It involves multiple self-administered Kubernetes clusters (set up with Rancher). I was responsible for onboarding several new engineers onto the project in 2023.
Video-on-demand portal. Multi-cloud Kubernetes cluster (set up with kubeadm), backend in PHP (Laravel), APIs and internal tooling built with Rust, Go and a bit of Python. CockroachDB, Redis and Elasticsearch as databases.
Lead Backend Engineer (mainly PHP) for a video- and chat-community with several millions of euros annually turnover. Hosted on custom On-Prem hardware, our primary tech stack was HAProxy, Varnish, Nginx, Redis, MySQL and Apache Solr. I was actively involved in several zero-downtime migrations and performance optimizations. The project was successfully sold to another company, I was primarily responsible for this migration as well.
More about me
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Reliable.
I have worked completely remotely for 15 years now (a few days per year on-site though). The key to success for me was providing reliability. I think it's essential to build up a trusting relationship with my clients through constantly delivering good work and being very transparent. -
Product oriented.
While I enjoy focusing on tech-related areas, I'm truly interested in the overall success of the product I'm building. The willingness to familiarize with domain-specific knowledge is not only a matter of course for me, I also consider it one of the most important factors for the success of a software project. -
Good with people.
I was frequently chosen as single point of communication between a developer team and product managers and have collaborated with and onboarded several developers. -
Self educational.
To me, learning new things is a hobby. I'm always interested in new technologies and a strong believer in lifelong learning. My primary sources are conference talks, podcasts and blog posts.
I hold a bachelor's degree in Business Informatics (finished in 2014). My most used languages these days are Rust, Go and Typescript. Software I have worked with: Kubernetes, Rancher, Postgres, MySQL, CockroachDB, Redis, Elasticsearch, Kibana, Neo4j, Tekton, Argo CD, Hashicorp Vault, Grafana, Prometheus, Loki, Nginx, Varnish, Fluentd, Ansible, Terraform, Docker, Git, Linux and more.
I care about efficiency, cost reduction and environmental impact. I'm not afraid of using complicated technologies (as you can see from my resume), but I try to keep things simple if the project allows it. This site, for example, is served statically, contains almost no JavaScript and is (hopefully) delivered from a server near you, to reduce latency and the energy needed for data transfer.
German is my native language, and I'm fluent in English as well.