Senior Developer – Node.js & .NET

At

Sytac , we build high-performing engineering teams for leading organizations in the Netherlands and beyond. We combine a pragmatic, people-first culture with strong technical craftsmanship giving engineers autonomy in real production environments, backed by a consultancy that invests in growth, community, and long-term partnerships.

For one of our

major clients in the energy domain , we are looking for a

Senior Developer with deep experience in Node.js and .NET , and a strong background in document processing and document management systems. You’ll help modernize and rebuild a core document platform that supports thousands of users across a rapidly evolving, data-driven organization advancing the energy transition.

This role requires a senior engineer who is comfortable across cloud-native development in

Azure and AWS , enjoys working on scalable backend services, and can help shape a robust, future-proof document solution.

What you’ll do

Design and build backend services, APIs, search capabilities, and document-processing components

Develop a modern document management system within a focused, high-skilled engineering team

Build cloud-native solutions across

Azure

and

AWS , ensuring reliability, scalability, and security

Deliver backend functionality in

Node.js

and

.NET , aligned with platform and business requirements

Assess technical approaches critically and contribute to solution architecture

Work in a SAFe/Agile environment within a digital product domain

Collaborate closely with colleagues in the EDS team, known for strong domain expertise and knowledge sharing

Continuously explore new technologies, tools, and concepts to improve engineering quality and system maturity

What we’re looking for

Proven senior-level experience in

Node.js

and

.NET

development

5+ years of experience working on

document processing

or document management solutions

Hands‑on experience building cloud solutions in

Microsoft Azure

and

AWS

Strong backend engineering capabilities, including API design and distributed systems fundamentals

Comfortable working independently and taking ownership of technical decisions

Strong communication skills in both English and Dutch

Experience working in Agile / SAFe environments

Team-oriented mindset with a proactive, collaborative attitude

Nice to have

Experience with

Python

and

Docker

Familiarity with Git and Gitflow branching strategies

Experience with Infrastructure-as-Code (IaC) tools such as

Terraform

What we offer

A

high-impact engineering role

on a mission-critical document platform used across a large enterprise

The opportunity to contribute to a digital transformation in an organization at the center of the energy transition

Hybrid collaboration with a skilled, supportive engineering team

A culture rooted in ownership, craftsmanship, and continuous improvement

Access to Sytac’s engineering community, knowledge-sharing sessions, and development support

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