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3E

Front-End Developer

Become a Front-End Developer at 3E in Brussels, Belgium, working on SynaptiQ, a SaaS product for renewable energy asset management. You'll develop scalable web applications using React, optimize performance, and collaborate with a diverse team. Enjoy flexible working hours and the option for remote work in a stimulating environment.
3E
3E
Brussels, Belgium   Flexible   Full Time  UTC+01:00

3E

Company Overview

3E

Brussels, Belgium

2000

Business Model

Renewable Energy

3E specializes in providing consultancy services, software solutions, and engineering services for renewable energy projects.

Consulting services, software licensing, and project management.

Locations & Geography

3E operates in multiple countries, including Belgium, France, Germany, the Netherlands, and Spain.

Company Culture

Their mission is to accelerate the transition to renewable energy through innovative solutions and expert guidance.

3E promotes a collaborative and inclusive work environment that values sustainability and innovation.

They offer various training programs and opportunities for professional growth.

Activities & Projects

3E is currently involved in several large-scale renewable energy projects across Europe, focusing on solar and wind energy.

They have developed advanced software tools for energy forecasting and project management.

3E implements sustainable practices in their operations and encourages clients to adopt similar strategies.

Career Opportunities

Typical job openings at 3E include roles in project management, engineering, and consultancy.

They offer competitive salaries, flexible working hours, and opportunities for remote work.

Contact Information

LinkedIn

Careers at 3E


Last updated on 2025-05-19 | Report an issue

Job Description

SynaptiQ is 3E's SaaS product, an independent, evolutionary software suite for asset management of renewable energy portfolios (more information on 3e.eu/synaptiq). SynaptiQ collects near-real time data of more than 20 million devices spread over 10 thousands utility scale and commercial solar and wind sites spread all over the globe.

We develop and operate advanced analytical services to enrich the monitoring data by:

  • satellite imaging data,
  • meteorological modelling,
  • advanced system modelling,
  • machine learning & artificial intelligence.

The platform combines domains related to big data, high-performance processing, IoT protocols and AI and is the product of the interactions between a multidisciplinary team of developers, scientists, renewable energy architects, electrical engineers, and enthusiast sales that implement, operate and commercialize SynaptiQ worldwide.

The added value realized by SynaptiQ is performance improvement and operational cost reduction for its Operations & Maintenance customers.

What you will be doing

We are looking for a Front-End Developer with extensive experience in React and a passion for creating efficient, scalable, and accessible web applications. The ideal candidate has a proven track record of optimizing performance bottlenecks, enforcing good front-end practices. At 3E, you will have the opportunity to work on meaningful projects that contribute to the advancement of renewable energy technologies and digitalization.

Responsibilities

  • Develop, test, and maintain robust, performant, and scalable front-end codebase in accordance with design and product requirements
  • Identify and optimize performance bottlenecks in the application using best practices and techniques
  • Use React and Redux Toolkit to build modern, dynamic UIs that are efficient, maintainable, and reusable
  • Create reusable components in the internal component system using Material UI
  • Design and develop efficient data-intensive pages that can handle large datasets, including table views, charts, and other UI elements
  • Conduct thorough code reviews and enforce good front-end practices to ensure quality and maintainability of code
  • Collaborate with multidisciplinary teams of developers, scientists, renewable energy architects, electrical engineers, and sales enthusiasts to achieve project goals
  • Implement and maintain user management workflows and secure coding practices to ensure security of data
  • Maintain a codebase that is easy to understand, modify, and extend, and adhere to coding standards and best practices

Requirements

To fulfil this role we are looking for someone with:

  • Minimum of 4 years of experience as a Front-End Developer, primarily with React
  • Proficient using Typescript inside a React codebase
  • Experience with CSS-in-JS
  • Strong understanding of performance optimization techniques in the context of React
  • Good debugging skills
  • Product-based experience - supporting and modifying a product through several years - living with the decisions of the past and building on top of them
  • Experience with refactoring a codebase as new features are written

Bonus points for:

  • Experience with MUI
  • Experience with Playwright
  • Experience with Highcharts
  • Experience with Nx & Vite
  • Experience with Docker and Azure pipelines

Benefits

Our offices are hidden in the centre of Brussels with a view on a pond, with ducks and a heron bringing a regular visit. In addition to a stimulating atmosphere in a highly motivated group of people, 3E offers a unique opportunity to further develop yourself in a company/team with an ambitious growth plan, delivering innovative services.

Furthermore:

  • Flexible & gliding working hours
  • Open to fully remote candidates
  • An international environment with colleagues of 25+ nationalities and projects in over 100 countries.
  • An open-minded company where everybody can bring their ideas to the table

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About the role

December 12, 2025

Full Time

Company

December 12, 2025

Flexible

3E

3e.eu

  •  Brussels, Belgium

Minimum of 4 years

UTC+01:00

Apply now

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