Dr. Michael Lesniak

Turning code into business value.

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Moin,

I’m an experienced freelance software engineer with 14 years of industry experience across fintech, SaaS, logistics, and tax software.

Skilled in software architecture (distributed systems, microservices, and maintainable monoliths), various programming languages (Java, Kotlin, Go), cloud-native development (AWS, Kubernetes), and AI engineering (LLM integrations, RAG pipelines, agent-based tooling).

I’ve led teams to success in multiple domains and mentored 30+ junior engineers.

I bring curiosity, passion, and dedication to every complex problem, championing software craftsmanship, continuous improvement, and code quality.

As a former CTO and Principal Engineer, I’ve driven large-scale migrations, defined company-wide architecture standards, and consulted with CTOs and heads of engineering on critical technical decisions.

Grounded in a Ph.D. in Computer Science and a strong background in mathematics, my work combines theoretical depth with hands-on engineering at scale.

If you’re seeking freelance services in software development, let’s connect:

Email me LinkedIn Book a free call

Outside of work I play chess, climb indoors (bouldering and lead climbing up to 16m walls), read science fiction, and explore the German countryside with my dog Suki.