Software Engineer - Energy

N-SIDE Belgium; Louvain-la-Neuve; On-site; EUR 65,000 - 90,000; Full time

Benefits offered by this job

Company car

Flex Income Plan

Job summary

N-SIDE Belgium seeks a Software Engineer - Energy in Louvain-la-Neuve to join the Energy department and help build a grid optimization platform. You will work on inception, development, and validation of new optimization tools for system operators, focusing on scalable backend capabilities and AI-native approaches.

You will collaborate with product owners and the GEO task force, lead backend development, and participate in CI/CD, containerization, and integration with existing solutions.

Qualifications

• Master in Computer Science or related field, or Bachelor with 3+ years' experience.
• Strong proficiency in Java and Spring Boot.
• Solid knowledge of Spring Web MVC, Spring Data JPA, Spring Security.
• Fluent in English and good communication skills.
• Interest in software design and evolution within a team.
• Willingness to continuously learn and adopt new tech.

Responsibilities

• Lead backend development and rapid prototyping in a Spring Boot stack.
• Design software solutions to meet business needs with product owners and tech leads.
• Contribute to containerization (Docker) and orchestration (Kubernetes, Helm).
• Provide code reviews, mentor juniors, and promote best practices across the team.

Skills

Java

Spring Boot

Spring Web MVC

Spring Data JPA

Spring Security

AI integration

English fluency

Team collaboration

Problem solving

Continuous learning

Education

Master in CS or related

Bachelor + 3 years exp

Tools

Docker

Kubernetes

Gradle/Maven

SQL/NoSQL

CI/CD

Job description

We are looking for a Software Engineer - Energy to join our Energy department based in Louvain-la-Neuve.

Who we are

N-SIDE is a world leader in increasing the efficiency of life sciences and energy industries by providing software and services that optimize the use of natural resources, facilitating the transition to a more sustainable world.

To achieve this, N-SIDE leverages its deep industry knowledge, technical expertise, and understanding of applied mathematics to help global pharmaceutical and energy companies anticipate, adapt, and optimize their decisions.

N-SIDE is driven by a diverse team of over 200 passionate engineers, computer scientists, and business experts from 30+ different nationalities, with 25% holding PhDs. Together, they are committed to making a meaningful impact toward a more sustainable future.

We are continuously looking at how we can support system operators (TSOs, DSOs, Transcos, and Integrated Utilities) with advanced grid optimization tools. System operators face a tremendous challenge. They are under heavy pressure to upgrade and expand their networks fast - but face shrinking time windows available to execute this work. Our standardized solutions enable operators to maximize work throughput while maintaining uncompromised grid safety, efficiency, and reliability.

As a Software Engineer - Energy, you willhelp the company be the top reference in Advanced Analytics Solutions for energy power systems. You will contribute in particular to the inception, development, and validation of a new optimization platform, aimed to help system operators better execute expanding CAPEX and maintenance programs within tighter, less predictable execution windows.

What you’ll do

• Together with the N-SIDE team, and more particularly the GEO task force, you will help incept, develop and deliver a new grid execution optimization platform:
  • Collaborate with the product owners, analysts and tech lead to gather and analyze requirements, and design software solutions that meet business needs.
  • Lead backend developments & rapid prototyping. Implement new features and do the maintenance of a Spring Boot backend codebase (Web MVC, JPA, Security, ,...), including, among others algorithm, servers, APIs (Rest API, …) and databases.
  • Contribute to the integration of some of our existing solutions at customers to get acquainted with the tech stack.
  • Participate in containerization (Docker), container orchestration (Kubernetes, Helm charts, Argo, …), continuous integration & continuous deployment aspects.
• As a Software Engineer, you will also participate in the technical growth of the product and team. You will therefore:
  • Stay up-to-date with emerging technologies, industry trends, and best practices in software development.
  • Depending on your seniority level, you may also mentor junior developers, providing technical guidance and fostering their growth within the team. Contribute to a positive and inclusive work environment, promoting collaboration and knowledge sharing.
  • By providing qualitative code reviews and participating in technical choices around our product, you will ensure that the team develops an efficient, reusable, and reliable code, and that they adhere to coding standards, best practices, and company guidelines.

About you

• You have a master in Computer Science or Software Development; or a bachelor with minimum 3 years of relevant professional experience.
• You have solid programming skills. Proficiency in Java and Spring Boot is a must.
• You demonstrate extensive knowledge of Spring Web MVC, Spring Data JPA, Spring Security.
• You are interested in software design and wish to contribute and evolve in that career path.
• You demonstrate excellent problem-solving abilities. You are able to break down complex problems into manageable components and devise efficient solutions.
• You have a continuous learning mindset. The tech stack is constantly evolving, so a willingness to continuously learn and adapt to new technologies, tools, and best practices is essential for long‑term success.
• You have a great team spirit, creativity, sense of initiative and responsibility. You are willing to share your knowledge and, depending on your seniority level, to mentor junior profiles.
• Leveraging agentic coding for rapid prototyping and proof-of-concepts has no secret for you.
• You are also able to take AI integration to a higher level: everything we build will leverage AI directly or be architected as AI‑native (e.g., agent or LLM‑powered apps, scalable model interfaces, etc…)
• You are fluent in English.
• Nice to have:
  • Mathematical optimization
  • Other Spring tools
  • Build tools (Gradle/Maven)
  • Database management (SQL / NoSQL)
  • Containerization and orchestration (Docker, Kubernetes, Helm, …)
  • Experience in or interest for building user interfaces
  • Python
  • Knowledge in the Energy sector

Travel: 5%

Our offer

What’s important for us is that you grow and learn, because we care about you, which is N-SIDE’s hallmark.You will be part of a fun and flexible work environment in which creativity, freedom and initiative are rewarded.

You will join a diverse team of over 200 passionate engineers, computer scientists, and business experts from 30+ different nationalities, with 25% holding PhDs. Together, we are committed to making a meaningful impact toward a more sustainable future.

N-SIDE offers a great compensation package, which includes a company car and full range of benefits which can be personalised thanks to our Flex Income Plan.

All candidates will be treated equally without regard to race, color, religion, sex, age, sexual orientation, citizenship, disability, gender identity, marital or family status, veteran status or any other legally protected basis, in accordance with applicable law. N-SIDE will not tolerate discrimination or harassment based on any of these characteristics.

We are headquartered in Belgium with offices in the USA and Japan. The company is certified B Corporation, Best Managed Company by Deloitte Belgium, and ISO 27001.

We are committed to respecting your privacy and protecting your personal data, including any information which allows us to identify you as an individual person. N-SIDE uses the applicant’s personal data in a fair and lawful manner. N-SIDE collects and processes personal data in accordance with the privacy statement available in the privacy policy. Personal information (applicant data) submitted by an applicant will only be used by N-SIDE to ensure an effective recruitment process and will be used for recruitment purposes only.