Willi Krappen

OPOX

Three years of product development at a Dresden digital agency. Main focus: shift-planning software for an industrial client with smart workplace assignment and automatic skill leveling. Clients include the City of Dresden and BOSCH.

2017–2020

The main project was shift-planning software for an industrial client. The system assigns workers to workplaces intelligently and levels qualifications automatically from deployment history. Whoever has staffed a workplace often enough counts as qualified; whoever has little experience gets scheduled with guidance. Alongside that, React/TypeScript applications for further industry and public-sector clients, from configurators to internal tools, with high requirements around accessibility and maintainability. Work in mixed teams of design, backend engineering and project leads; delivery on Scrum/sprint cadences.

Year2017–2020ClientOPOX GmbHRoleFrontend developer - planning software, configurators, internal tools

Context

The station between university and co-founding Lemonverse: full-time employment as a frontend developer at OPOX GmbH, before the current product-engineering focus.

Main project

Shift planning for an industrial client

The system assigns workers to workplaces intelligently and levels qualifications automatically from deployment history. Whoever has staffed a workplace often enough counts as qualified; whoever has little experience gets scheduled alongside experienced guidance. Built in React/TypeScript, in a mixed project team on Scrum cycles.

Clients (selection)

The client base ranged from public sector through industry to mid-market. The ones visibly recognisable, and so listable here, are:

Public sector

Stadt Dresden

Frontend work on web applications for the City of Dresden, with the corresponding requirements around accessibility, data protection and browser reach.

Industry / enterprise

BOSCH

Frontend contributions to BOSCH projects within a mixed agency team: components, integrations, stakeholder handoffs on Scrum cadences.

Focus areas

Production applications with React + TypeScript

Components, state management, routing, API integration. Code that survives multiple releases and multiple client iterations without rewrites.

Accessibility & performance

For public-sector clients WCAG conformance and fast initial loads weren't a nice-to-have; they were an acceptance criterion for delivery.

Work in an agency setting

Mixed teams of designers, backend engineers and project leads. Tight iteration with client stakeholders, sprint-review handoffs, code review across the team.

Build pipelines & deployment

Webpack-based setups, CI/CD integration, handoffs into staging and production stages with branch-based workflows.

What stuck

  • Three years of hands-on experience with enterprise applications in Scrum teams, from concept to production.
  • Client-stakeholder communication on sprint cadences, including review meetings and demos.
  • First in-depth practice with modern TypeScript / React, which later carries Lemonverse and the personal products.
  • Understanding that frontend maintainability matters more than the coolness of the next framework.

Note

Concrete project outputs belong to the respective clients. Details on individual applications are subject to the relevant agreements and are not broken down publicly here. Happy to walk through specifics on request.