Software developer in Naarden.

A software developer builds the digital infrastructure your organisation runs on. For an asset manager on Naarderbos, that means a client portal with reporting, mandate administration and custody integrations. For a family office in one of the quiet lanes around the fortress, a case management platform with document workflows and encrypted communication. For an executive consultant, time tracking with a client portal and invoicing integration. For a cultural institution around Naarden-Vesting, membership administration, an event platform or a donor portal.

At Appfront we cover the full software spectrum: web applications, custom back-ends, API integrations and AI components that run on top of that data. We are a building agency with a senior Dutch team that writes the code and takes it into production itself, not a pure strategy consultancy and not a loose freelance layer on top.

Many clients in Naarden sit in the mid-market segment: too specific for an off-the-shelf package, too limited to set up an in-house tech team. If you are specifically looking for a mobile app, our app developer page for Naarden is the right place. That sister page serves the same region for mobile, while this page covers the broader software picture: web, back-end, integrations and AI. If you are exploring the neighbouring municipality of Bussum, the software developer page for Bussum offers the same service, one town further along.

Software running in production is more than an attractive front end. It has to work for your elderly client, for your compliance officer who wants to trace every change, and during the first serious error situation around a tax deadline. We work per project with a suitable stack: TypeScript/Node.js or Python for most back ends, .NET where Microsoft leads, React, Vue, Next.js or Astro for the front end, and PostgreSQL as the standard database.

For hosting we work with AWS (Frankfurt or Ireland), Azure NL or a Dutch cloud provider, with EU data residency as the starting point; no US data routes for client or case data. CI/CD via GitHub Actions or GitLab, infrastructure-as-code via Terraform, and monitoring via Datadog or Grafana. All infrastructure is reproducible.

For systems where AI is involved, such as a copilot over your case archive, a summarisation pipeline for due diligence material, or a retrieval engine over client correspondence or investment reports, we work with retrieval-augmented generation on your own content, with evaluations, logging and consent management from sprint one. You remain the owner of your data and model outputs. No generic OpenAI account where your case text ends up in a shared service.

For compliance-sensitive sectors we start with a GDPR and sector check (Wwft, FBP code of conduct, Wta, Bft professional rules, DORA where applicable). For clients with confidential files we work under team-level NDAs and separate development environments. At your request we can carry out the work entirely on your own infrastructure, with key management under your control.

A project begins with an introductory call: half an hour to an hour in which we discuss the problem you want to solve, for which users, and which systems are already in place. No obligation and free of charge. Sometimes it turns out this doesn't need to be custom-built. Sometimes custom development is indeed the right answer, for example because your mandate workflow, family office reporting or client portal doesn't fit well into an off-the-shelf product.

For a suitable use case we plan a discovery: a defined phase in which we sharpen the solution around modules, integrations, compliance requirements and user roles. We deliver a concrete plan with scope, timeline and budget. For financial, tax and legal practices we almost always start with a short technical due diligence of your existing stack. We would rather not replace what already works; we build carefully around it.

Then comes the build, in sprints. At the end of each sprint, something working is running, even if it is initially limited, so you can steer early. We work in your own repository, with code review, automated testing and a staging environment where you can click through and give feedback yourself. For Naarden clients, a fixed onsite session at your office is often included; in between there are stand-ups and review sessions by video.

After go-live comes maintenance and ongoing development. Software requires upkeep: libraries receive security updates, users raise new questions, and regulations change. We offer ongoing support, or hand over cleanly to your own team or an external systems administrator.