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Freelance React developer

React applications, existing codebases and API integrations. I am a freelance developer in Zaandam, next to Amsterdam, working across frontend and backend.

Working with what is already there

I work on React products as well as building with Svelte. An existing application has users, integrations and decisions behind it. My starting point is to understand those before deciding what needs to change.

The work can be an interface, an integration, a backend change or a rebuild. I am particularly interested in tools that people use daily, where small decisions about forms, permissions and loading states add up.

Apps connected to an organisation

For ThuiszorgInHolland I worked on a React app for care workers, clients and applicants, connected to AFAS. Access depends on information in the organisation’s payroll system. The same application also runs in a Capacitor shell.

UpLinked uses React and Convex. My work there covered the backend, agents, prompt system, migration and billing. The migration moved 196,000 rows from Bubble; keeping the product’s data intact mattered more than introducing a new stack.

Earlier work includes SPJ’s React website and editorial system, and Handlefy’s React Native inventory and storage app. The case studies below explain my role and the constraints of each project.

A useful first conversation

Show me the flow that is difficult for your users, or the part of the codebase that is difficult to change. We can work out whether it needs a small repair, a new feature or something more substantial.

Technologies

• React
• Next.js
• React Native
• Expo
• Convex
• Capacitor

Selected work

• ThuiszorgInHolland: connecting AFAS, recruitment and the care app

  For a home care organization, I connected AFAS to the recruitment website and care app: employee and client records coming in, vacancies and applications going out.

• UpLinked: LinkedIn content automation

  I built the backend, AI workflows, migration and billing for UpLinked’s move from Bubble to Convex, turned it into serious high-tech software, together with the two very tech savvy founders

• SPJ: financial & corporate communication

  I built SPJ’s React frontend with Jeffrey, who built the Laravel backend and administration. The site brings together news, people, services and client work in Dutch and English, with content maintained by the agency.

• Handlefy: real life 'Dropbox'

  Handlefy was a platform for decentralized storage space where you could administer and store your items, which would be picked up and returned where and whenever you wanted. Basically real life Dropbox/Cloud buckets. I worked on the iOS/Android app, website and cms.

Working together

I work from Zaandam, next to Amsterdam, in the Netherlands. Tell me what you want to build, what already exists and where you are getting stuck.

Email me at m [at] hacktis.ch.