cover image
Hysopt

Frontend Developer

Hybrid

Antwerp, Belgium

Junior

Full Time

05-01-2026

Share this job:

Skills

Java TypeScript DevOps Scrum Architecture Software Architecture react AWS Software Development Agile Mathematics

Job Specifications

Want to grow with a technology-driven scale-up and work on a complex SaaS product that tackles real-world engineering challenges?

As a Frontend Developer, you will join the R&D team to build, expand and improve the user interface of the Hysopt platform, translating advanced engineering logic into clear, performant and user-friendly web applications.

Your day-to-day responsibilities:

Develop and expand the user interface of the innovative Hysopt software
Contribute to the user experience of our cutting edge applications
Integrate the Hysopt software with other software
Make use of modern software technologies and continuously improve the development process
Implementation, software architecture, cloud infrastructure, devops, testing and maintenance

You recognise yourself in this:

Frontend developer with good knowledge of React and Typescript
Required qualification: a master's degree in computer science, computer engineering, or equivalent with at least 3 years' experience in software development
Knowledge of Amazon AWS and Java backend development is an advantage
Affinity with physics and/or mathematics, and you are interested in understanding the hydraulic and thermodynamic behavior of heating and cooling systems
Experience with Scrum or Agile development methodology
Fluent in English (Dutch is an advantage)
Enjoys working independently in a structured way

What's in it for you:

You join a scale-up and fast-growing company with an open corporate culture
You have a big impact on the development of the Hysopt software, an innovative Belgian product
You work with the latest technologies
You have the opportunity for continuous learning
Attractive salary package and extra-legal benefits (company car, mobile phone, laptop, health insurance, meal vouchers, ...), with the possibility to work parttime from home
Regular teambuilding activities

We are Hysopt

Hysopt is a rapidly growing SaaS company originating from the University of Antwerp. We develop physics-based HVAC engineering software that helps engineers design, analyse and optimise complex hydronic systems with confidence.

Our cloud platform enables better-informed design decisions, improved system performance and a smoother transition towards low-carbon building systems. By replacing rule-of-thumb calculations with accurate simulation, we support HVAC professionals in delivering efficient, reliable and future-proof solutions.

Applications are reviewed on a rolling basis, so speed is key. The sooner you apply, the quicker we can arrange an interview. Unfortunately we aren't in a position to sponsor candidate visas. If you don't have the independent right to work in the EU we will not be able to progress your application.

About the Company

Hysopt (Hydronic System Optimisation) is a physics-based HVAC design platform that empowers engineers to deliver better-performing systems—faster, with less risk. Spun out from the University of Antwerp, Hysopt helps teams move from trial-and-error to simulation-backed certainty using digital twins and proven workflows. Design, compare, and validate HVAC systems with ease using prebuilt templates and automated checks. Win more projects by backing your bids with quantifiable performance insights and simulation-based evidence.... Know more