Job description agorum Software GmbH topic home

business

agorum Software GmbH is a small, family-owned company in the Stuttgart area with a single product: agorum core, which is a document management system that processes invoices and other company data (via email, scanner + OCR, or through various APIs), enriches it with metadata to provide powerful searching and legally-compliant archiving. This basic functionality is extended by a graphical workflow engine and recently also AI agents, all accessible via a web-based UI. It's used by SMEs in the DACH area, who have the product tailored to their own processes by consulting through agorum or one of its partners. The software can be self-hosted on Windows or Linux, or rented in the cloud. Most of the functionality is implemented in a custom JavaScript environment, which wraps a Java application server and relational database. Most of that (including the default functionality, but excluding enterprise features) is GPLv2-licensed and can be inspected by its users. However, there's no open source community; the free version is mainly used for evaluations, not for amateur use, and the community forum is low-traffic and mostly frequented by customer and partners.

job title

Full Stack Java / JavaScript Software Developer
Mar 2025 - Apr 2025
Implemented a generic overview component separately in two home-grown JavaScript UI toolkits.

achieve­ments

The virtual appliance that can be freely downloaded from the company's website revealed a tech stack consisting of a JBoss application server and Rhino JavaScript engine, with a primitive Ant-based build system of Windows batch files and hardly any unit tests; the kind of environment I had worked on twenty years ago (and fortunately long moved on from). Open source components and libraries were almost exclusively out-of-date and often also out-of-support, and the imminent end-of-life of OpenJDK 8 in 1½ years really put the pressure on tackling these issues.

With my background and specialization in software modernization, this felt like a perfect match to support the founder and CTO and one long-standing core developer who were maintaining this large body of legacy software (embedded in an R&D organization of one support and one project/customization team). My knowledge of Maven, containerization, modern CI/CD-processes and microservice architectures would perfectly complement their deep domain and product knowledge.

Onboarding took place at their headquarters for two weeks, with introductions, some pair programming with the busy founder, and computer-based trainings from their own academy centered around the users', developers', and admin perspectives. During the trainings, I collected feedback on the content (which is continually updated to remain aligned with the evolving product), prepared a list of UX and smaller product issues and even implemented a small patch blocking one training step (which in my mind would have been enough cause for a small well done, but received a rather irritated you did what?! from my mentor). Interestingly, my first task did not involve the Java core yet but was a UI-only reimplementation of a details tab on any kind of document object shown in the document explorer (which is named just like the open in explorer context menu action that targets the Windows Explorer (or whatever file manager that client is using) — I reported this confusing overlap, but again didn't get much of a reaction). Before the backend could be modernized, first some outdated UI components had to be reimplemented. The custom UI toolkit (aguila) was implemented in ES5(ish) JavaScript and consisted of a widget library and a newer Cardlet subsystem for non-interactive visualizations. Both had their own handling of domain data and events that need to be bridged. As custom toolkits, these had their quirks and inconsistencies, but were well tailored to the product and its use cases.

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virtuousness IS

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because should&the;that

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because because

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responsi­bilities

skills

used tools

Ingo Karkat; last update 15-May-2025