API development
REST and gRPC APIs with clear contracts, sound error handling and an eye on performance – from specification through to operation.
Freelance Software Engineer
Design · Build · Operate
Solid APIs and interfaces that connect your systems reliably: REST and gRPC APIs, microservices and scalable backends for companies that rely on maintainable software. Remote, across Germany.
- 7+ years of software engineering
- Go & C#/.NET as core stack
- Remote across Germany
01 · About
A software engineer with a soft spot for clean interfaces
I studied computer science at Otto von Guericke University Magdeburg and have been building software professionally since 2019 – first as a team lead in AI-assisted image processing, later focusing on backends in fintech, retail and logistics. I have been working freelance since 2022.
My focus is where systems have to talk to each other: APIs, interfaces and backend services in Go and C#/.NET. I care about stable, maintainable software – and I enjoy getting to the bottom of stubborn bugs.
- Location
- Bismark (Altmark), remote across Germany
- Education
- BSc Computer Science, OVGU Magdeburg
- Languages
- German (native), English (C1–C2)
02 · Services
Where I can support you
Four areas, one common thread: backend systems that work reliably and that are still pleasant to extend a few years from now.
System integration
I connect your applications with third-party systems, partners and existing databases – robustly, traceably and well documented.
Microservices & cloud
Distributed backend services in Go or C#, containerised and run on Kubernetes – with event sourcing where complete traceability matters.
Maintenance & debugging
Security updates, bug fixing and further development of long-lived .NET applications – including release and CI infrastructure.
03 · Strengths
Where my strengths lie
From more than seven years of software engineering: the areas I know inside out – and what that means for you.
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Integration as a core discipline
Interfaces between systems run through my whole career. I account for data contracts, failure modes and the behaviour of foreign systems from the outset – so that integrations hold up under real-world conditions.
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Traceability in distributed systems
Go microservices, Kubernetes and event sourcing: architectures in which any state can be reconstructed completely – a real advantage in regulated, compliance-critical environments.
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Finding causes instead of treating symptoms
Stubborn bugs in long-lived codebases appeal to me. I analyse thoroughly, fix durably, and take care of security updates and dependable releases.
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Responsibility beyond the code
As a former team lead and backend owner I bring more than implementation: coordination within the team, CI/CD and release infrastructure, and a feel for maintainable solutions.
Languages
- GoCore
- C# / .NETCore
- C++Solid
Architecture & APIs
Data
Platform & operations
04 · Projects
Selected projects
A selection of my work so far. Clients are not named, for reasons of confidentiality.
In-house business software for a retail group
- Task
- Operating and extending an internal application with a WinForms front end, a .NET backend and an MSSQL database.
- Contribution
- Security maintenance, bug fixing, feature development and work on the release infrastructure.
- Outcome
- A long-standing, trusted collaboration – continuously engaged since 2022.
- Technologies
Anti-money-laundering platform
- Task
- Building a distributed backend that helps companies detect and prevent money laundering.
- Contribution
- Go microservices on a Kubernetes cluster in Azure, implemented with event sourcing.
- Outcome
- Any past state of an entity can be reconstructed completely – an essential basis for compliance.
- Technologies
Store logistics for large grocery chains
- Task
- Software controlling the supply of franchised stores from large distribution centres.
- Contribution
- Ownership of the C# backend including data access, CI pipelines and containerisation.
- Technologies
AI edge camera for licence plate recognition
- Task
- Developing an edge camera for automatic licence plate recognition (ALPR) and security applications.
- Contribution
- Leading the development team; AI-assisted object detection and object tracking directly on the device.
- Technologies
05 · How I work
How working together looks
Transparent, pragmatic and inside your existing processes – without unnecessary overhead.
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First conversation
You describe the goal, the starting point and the constraints. I ask questions, and we find out whether it is a good fit – with no obligation.
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Assessment & quote
You receive an honest assessment of effort, risks and approach, together with a concrete quote.
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Delivery
Iterative and transparent, remotely in your tools: regular check-ins, code reviews and visible progress.
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Handover & support
Maintainable, documented code and knowledge transfer to your team – with long-term support if you want it.
06 · Contact
Let us talk about your project.
Briefly describe what it is about – a few sentences are enough. I will get back to you shortly with a first assessment.
Availability: on request