Senior NodeJS Developer | 60K-85K | Hilversum |

Guidewell; Hilversum; On-site; EUR 50,000 - 70,000; Full time

Benefits offered by this job

Competitive salary

Pension plan

25 vacation days

Travel reimbursement

Job summary

A tech company in construction safety is seeking a backend developer to take ownership of their platform built with Node.js and MariaDB. The role involves leading technical direction, designing data models, and developing APIs for integrations. Ideal candidates have at least 3 years of experience with Node.js in production, a security-first mindset, and strong communication skills. The company offers a competitive salary, 25 vacation days, and a collaborative culture in a tight-knit team environment.

Qualifications

• At least 3 years of experience with Node.js and MariaDB or MySQL.
• Skilled in designing and maintaining service-oriented architectures.
• Strong communicator who enjoys working in a collaborative team.

Responsibilities

• Take full ownership of the backend platform with a microservice architecture.
• Lead the technical direction and optimize data models for performance.
• Develop APIs and implement integrations with broader product ecosystem.

Skills

Node.js

MariaDB

Microservices

APIs development

Collaboration

Security practices

Tools

Kubernetes

React

Bootstrap

Job description

At our company, safety isn’t just a checkbox. It’s our mission. We help organizations in the construction and infrastructure sectors prevent accidents and protect their people. Our software enables workers to report incidents, flag unsafe situations, organize toolbox meetings, and run inspections, all from one intuitive platform.

Today over 200,000 professionals rely on our technology to keep job sites safer every day.

We’re a close-knit team of about 15 people based in the Amsterdam region. After a complete frontend rebuild we’re now entering a backend-focused phase, building new integrations, improving architecture, and scaling our platform. We’re looking for a developer who wants to take ownership of our backend and help shape the future of safety in construction tech.

What you’ll do

• Own and evolve Take full ownership of our backend platform with a domain-driven microservice architecture built on Node.js with Express, RPC protocols, and a MariaDB database.
• Architect and design Lead the technical direction, design and optimize schemas, queries, indexing, and data models while ensuring performance, reliability, and security.
• Build and integrate Develop APIs for our frontend and implement integrations with our broader product ecosystem such as shared authentication and unified dashboards.
• Collaborate Work closely with our frontend developers and product team to deliver impactful features that improve safety outcomes on construction sites.

Our stack

Backend Node.js, RPC-style microservices, MariaDB

Infrastructure Bare-metal Linux migrating to Kubernetes

Frontend React (TypeScript), Bootstrap, Redux

Your profile

• At least 3 years of experience with Node.js and MariaDB or MySQL in production environments
• Skilled in designing and maintaining service-oriented
• Security-first mindset with attention to authentication, authorization, and data privacy (GDPR)
• Strong communicator who enjoys working in a small collaborative team
• Fluent in English, Dutch is a plus
• Based in the Netherlands and available to work on-site part of the week

Why join us

• Become the key owner of our backend and make real impact without corporate layers
• Work on a mission with purpose by making construction safer
• Tight-knit, low-ego culture with quick decision cycles
• Competitive salary, pension plan, 25 vacation days, and travel reimbursement