App and software developer in Haarlemmermeer.

Economically, the Haarlemmermeer municipality is not a typical Dutch municipality. It is effectively a densely populated logistics and business ring around Schiphol. As a result, an app and software developer here faces a very different kind of demand than in Haarlem or Leiden: cargo platforms, ground-handling tools, parking and mobility apps, fintech portals and internal tools for mid-market head offices a few minutes from Europe's fourth-largest airport.

At Appfront, we build the full spectrum for clients in Haarlemmermeer: mobile apps (iOS, Android, cross-platform), web applications and SaaS platforms, custom back-ends and APIs, system integrations with ERP and industry software, and AI components for logistics optimisation or document processing. We are a building studio, not a pure consultancy or a loose freelance layer, with a senior Dutch team that writes the code itself and puts it into production itself.

Typical software challenges in Haarlemmermeer include: a real-time logistics platform for a cargo handler at Schiphol-Centrum-Oost; a customer portal for a fintech provider with an office in Beukenhorst-Oost; a field service app for an installation company in Nieuw-Vennep; an EHR integration for a healthcare group with locations in Hoofddorp and Badhoevedorp; and an internal tool for the head office of a car importer. Many clients start with one specific challenge and then expand into broader software support. If you are specifically looking for a mobile app, our app service is the right place to start; for broader software projects, see our software service.

Software running in production is more than a nice front end. It has to work under peak load, on a slow network, for the ten-thousandth user and when support gets its first serious customer question. We work per project with a suitable stack: TypeScript/Node.js or Python for most back ends, .NET where the Microsoft ecosystem leads, React or Vue for front ends, and PostgreSQL as the default database. For mobile apps, Swift, Kotlin, React Native or Flutter, depending on performance and budget requirements.

For hosting we work with AWS, Azure or a Dutch cloud provider, with EU data residency as the starting point. CI/CD via GitHub Actions or GitLab, infrastructure-as-code via Terraform, and monitoring via Datadog, Grafana or a simpler open-source stack, depending on what suits your scale. We don't build unnecessarily complex infrastructure where it isn't justified.

For systems that involve AI — a copilot in a back office, a document processor for air waybills, a recommendation engine for a retail arm — we work with retrieval-augmented generation on your own content. We build evaluations, logging and consent management from sprint one. For compliance-sensitive sectors (aviation, finance, healthcare) we start with a GDPR, NEN and DORA check and arrange the right documentation straight away, not as a separate phase afterwards.

A project with us begins with an introductory conversation: half an hour to an hour in which we discuss which problem you want to tackle, for which users, and which systems are already in place. That conversation is free and without obligation. Sometimes it turns out this does not need to be built in-house: an existing package or an affordable SaaS solution will do. Other times, custom development is indeed the right answer — and then we talk about scope, integrations and compliance.

If there's a suitable use case, we'll plan a discovery. This is a short phase in which we sharpen the solution: which modules, which integrations, which compliance requirements, which user roles. For Schiphol-related projects, we look at customs integrations, GDS or cargo data protocols and the existing integrations; for fintech, at SSO, DORA and PSD2 requirements and core banking; for automotive, at dealer and lease systems. We deliver a concrete plan with scope, timeline and budget. Not a vague deck, but something you can make internal decisions on.

Then comes the build, in sprints. At the end of each sprint something working is running, even if it is limited at first. This helps to test design choices early, adjust priorities and bring stakeholders along. We work in your own repository, with code review, automated tests and a staging environment you can use to test with real users.

After go-live comes maintenance and ongoing development. Software needs upkeep: libraries change, security patches are released, users request new features, and integrations move to new API versions. We offer ongoing support or hand the system over cleanly to your own team, depending on what suits your scale and internal capacity.