Senior Backend Developer (Node.js)

Pro4all; Weesp; On-site; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Competitive salary

Pension plan

25 holidays

Travel allowance

Job summary

A leading software company in construction located in Weesp is seeking a Backend Developer with expertise in Node.js and MariaDB to take ownership of their backend platform. You will lead technical improvements and develop secure APIs to enhance safety in the construction sector. Candidates should have at least 3 years of experience, a strong security mindset, and be proficient in English. This role offers a competitive salary and a collaborative team culture.

Qualifications

• 3+ years experience with Node.js and MariaDB/MySQL at scale.
• Ability to design and operate service-oriented systems.
• Security-first mindset focused on data privacy and secure practices.
• Professional proficiency in English; Dutch is a plus.
• Residing in the Netherlands.

Responsibilities

• Take full ownership of our back-end platform.
• Lead technical direction and improve data models.
• Develop APIs and implement integrations.
• Collaborate with other developers on features.

Skills

Node.js

MariaDB/MySQL

Service-oriented architecture

Collaboration

Data privacy (GDPR)

Communication

Tools

React (TypeScript)

Bootstrap

Kubernetes

Job description

Your mission

At VeiligWerk, safety comes first. Our mission is to help construction companies prevent accidents and protect their people. With our software, workers can easily report incidents and unsafe situations, organize toolbox meetings, run inspections, and more. Today, over 200,000 construction professionals across the Netherlands rely on our platform, with clients including Heijmans, Dura Vermeer, Boskalis, and TBI.

We’re a dedicated team of 15 in Weesp. As part of Pro4all, we combine our focus on safety with the strength of shared integrations. After a full frontend rebuild, we’re now working on backend‑heavy features and are looking for someone to take ownership of our backend and help us build an even safer industry.

What You’ll Do

• Own and Evolve: Take full ownership of our back‑end platform; a domain‑driven microservice architecture based on Node.js, supported by Express and RPC protocols and a MariaDB database.
• Architect & Design: Lead technical direction, design and improve schemas, queries, indexing, and data models and ensure performance, security, and reliability.
• Build & Integrate: Develop APIs for our frontend and implement key integrations with the Pro4all ecosystem (e.g., shared logins/SSO).
• Collaborate: Work closely with the other developers in Weesp to create awesome new features that prevent accidents on the construction site.

Our stack

• Backend: Node.js, RPC‑style microservices, MariaDB
• Infra: Bare‑metal Linux, migrating to Kubernetes
• Frontend: React (TypeScript), Bootstrap, Redux

Your profile

• At least 3+ years experience with Node.js and MariaDB/MySQL at scale.
• Proven ability to design and operate service‑oriented systems with clear boundaries.
• A security‑first mindset: authentication/authorization, secure‑by‑default practices, data privacy (GDPR).
• A great communicator who enjoys collaborating in a tight‑knit, on‑site team.
• Professional proficiency in English; Dutch is a plus.
• Someone residing in the Netherlands.

Why us?

• Become owner of the backend in a small team, where you can really make an impact.
• Mission with purpose: help reduce accidents in construction.
• Friendly, low‑ego, on‑site culture in Weesp with fast feedback loops.
• A competitive salary, pension plan, 25 holidays, travel allowance.

Interesse?

Are you ready to be part of our adventure and help transform the construction industry? Then apply now – or if you have any questions, feel free to give us a call on 020-2170628 and ask for Niels van Rijn.

About Us

20 years ago at Pro4all, we embarked on a challenging mission: to digitise construction. Why? Because we saw that, despite all good intentions, costly mistakes were being made and materials unnecessarily wasted. Thanks to our software, construction companies can now work together more efficiently, build more sustainably and possibly even contribute to solving the housing shortage. Our products are used daily by tens of thousands of professionals working in the construction industry. But note that we are not just another software company. We are a team of passionate tech enthusiasts with years of experience. We believe digitalisation is the key to our customers' success. We want to move the (often conservative) construction industry and show that building can be easier (and more fun). Our solutions have contributed to the largest (and smallest) projects in the Netherlands and abroad such as: Amare, Coolblue and Schiphol Airport.