Freelancer profile translated to English.
Back to original languageAbout David
Welcome to my profile!
I have been a freelance software developer since 2021. Before that, I was responsible for the development of the online tax return at smartsteuer GmbH, a subsidiary of Haufe/Lexware.
One of my strengths is to get things done quickly and with just enough effort as the situation requires, without compromising too much on testability and maintainability. I also have no problem working with legacy code or fighting at the bleeding edge. Where others see technical debt, I might find a valuable asset.
Software is never perfect, but with the right attitude, most problems can be solved in a reasonable amount of time.
German
Native or bilingual
English
Fluent
Japanese
Basic
Can work on-site
Hannover (up to 50km)
Experience
- Cheftresor GmbHSenior Software Developer & ConsultantSOFTWARE PUBLISHINGSeptember 2021 - June 2025 (3 years and 9 months)Zwickau, SN, GermanyLong-term intensive support of the startup in backend, frontend, scaling, and prototyping of new features, apps, and products.The "Cheftresor" controlling solution is based on .NET and Angular, deployed dockerized as a SaaS solution within a managed Kubernetes.
- smartsteuer GmbHSenior Software Developer & Core ArchitectSOFTWARE PUBLISHINGOctober 2010 - August 2021 (10 years and 10 months)Hannover, GermanyFor 11 years, from its inception until 2021, I contributed to the development of the smartsteuer online tax return, making it one of the leading products on the market. By mid-2021, this application had already reclaimed over a billion euros for customers from the tax authorities and sent millions of tax returns.From 2019 onwards, as Core Architect, I was responsible for the development of the core product.In addition to development itself, I was also responsible for hosting contracts + SLAs, security audits, and certifications.Primarily, Java-based applications using Spring Boot were employed, with frontends in YUI, jQuery, and Prototype. Various microservices in Docker + Kubernetes were used in the periphery.
- iD.on GmbHSoftware DeveloperApril 2007 - September 2010 (3 years and 5 months)Hannover, GermanySoftware developer at iD.on GmbH, a software agency from which smartsteuer GmbH also originated and was spun off.There, I worked on various projects in the Java environment.
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