Transmission System Operator (TSO) Expert

🌍 Transmission System Operator (TSO) Expert (Europe | English)

Location: Europe, Ideally Based in or Willing to Relocate to Brussels, Belgium
Employment Type: Full-Time
Languages Required: English proficiency, other languages an advantage
Experience Required: As below
Salary Range: EUR 30k to 90k gross per annum, based on experience
Reports to: Project Director, ESM
Works Closely With: Energy System Modelers
Work Travel Requirements: Some
Start Date Goal: Late 2025/Early 2026 (TBD)

🧭 About Us

We’re a remote-first, mission-driven, registered non-profit, comprising around 50 highly-skilled and motivated professionals from all around the world! Our culture is built on trust, autonomy, and collaborative professionalism.

We thrive in a fast-paced, distributed environment, where communication is clear, empathy is second nature, and each of us takes full ownership of our work. We work independently, but also collaborate easily when appropriate. Open Energy Transition (OET) is a non-profit organisation advancing the global energy transition by developing innovative open-source tools and data solutions for energy and grid planning.

Our vision is to make open approaches the global standard by 2030, enabling energy planning that is more accessible, transparent, and effective. This shift is essential to better guide trillion dollar worth public and private investment toward affordable, sustainable, and secure energy systems. This is not a distant aspiration; our work is already being adopted by leading system operators, regulators, and philanthropic partners.

We are seeking a Transmission System Operator (TSO) Expert to join our innovative team.

To learn more about OET and our team, you can visit our website, and browse around our Handbook.

🎯 About the Role

As a TSO Expert, you would support OET in aligning open-source energy modelling tools and project outcomes with the planning and decision-making needs of Transmission System Operators (TSOs), or equivalent institutions.

Language proficiency in English is required.

A willingness to relocate to a Brussels office is prefered.

We’re all about transparency, and want to give you the best possible opportunity to prepare for any potential interviews. To learn a bit more about the people you’ll be working most closely with, click here:

1. Project Director, ESM (aka your future Manager), Lisa Zeyen

🛠️ Your Key Responsibilities

• Advise OET on how TSOs and regulators integrate long-term energy planning into operational and investment decisions.
• Bridge the gap between open-source modelling tools and internal planning workflows of TSOs.
• Provide insight into how capacity expansion and production-cost models inform infrastructure planning and adequacy studies.
• Identify institutional “systems of change” within TSOs, including processes and regulatory oversight relevant for model adoption.
• Support the design of capacity-building sessions and documentation to align OET products with TSO analytical needs.
• Contribute to internal knowledge transfer by mentoring OET staff on TSO processes, decision frameworks, and policy drivers.
• Participate in stakeholder engagement with TSOs, regulators, and system-planning bodies across regions.

✅ You’ll Be a Great Fit If You Are/Have...

• 7+ years minimum experience required in a Transmission System Operator, system planning consultancy, or regulatory body overseeing power system transformation.
• Demonstrated experience in energy planning, capacity expansion, or production-cost modelling.
• Familiarity with the interaction between long-term system studies and regulatory or investment processes.
• Strong understanding of decarbonization pathways, system flexibility, and cross-sectoral integration.
• Excellent communication skills and ability to translate between technical modelling and organizational decision-making.
• Bonus points if you’ve worked at a TSO, at a startup, or in the general energy sector before
• Bonus points if you're already located in, or are willing to relocate to Brussels, Belgium
• Fluency in English
• Thrive in a highly self-managed, remote, transparent work culture, where you don’t wait around to be told what to do by your manager but show initiative and ownership, and where you give and receive honest feedback to help all, regardless of their role, grow and develop

✨ What We Offer

• A truly flexible work environment where you’re trusted to work very autonomously. Zero micro-management, as that goes against our culture.
• The opportunity to support hardworking, passionate, busy leaders who value and respect your contributions, and are working to create positive societal change in the energy sector.
• A culture that values transparency, empathy, trust, humility, diversity, collaboration, and recognition.
• We have an open-door policy, and value reciprocal feedback. You’ll always know where you stand, and always have the ability to have your voice heard, simply by reaching out.
• A pretty flat hierarchical structure, where titles are not emphasized, and all contributions are valued.
• Competitive salary with growth potential. Any relevant benefits depend on your region of residence.
• Supportive onboarding and training, tailored to your strengths, interests, and career ambitions.
• The ability to be part of our formation! We’re still growing, changing, and improving. Anyone who is part of our team now is able to meaningfully contribute towards our culture, and processes. We’re open to all suggestions, and take them seriously!

📝 What Our Hiring Process Entails

We take hiring seriously, and want to bring on candidates who will contribute positively towards our culture just as much as they will succeed in their roles.

Also, we don’t only want to have good outcomes from you. We also want you to feel happy and fulfilled in your position. That means we have a structured process to determine best fit. Our hiring process is as follows:

1. Candidates apply via Greenhouse, and include as much information as possible and comfortable.
2. Various team members of OET will shortlist candidates in our ATS.
3. Certain shortlisted candidates will be contacted to arrange a screening call.
4. Screening calls are conducted, and feature a max. 30 minute chat with our People Team.
5. Certain candidates will go through to a first-round interview, of max. 1 hour, with our People Team. This interview will screen for a combination of competency and culture fit.
6. Finalists will go through to a second-round interview, of max. 1 hour, with the OETers with whom they’ll work most closely.
7. Bonus round -  there may be a short written assignment, depending on the role.
8. The chosen candidate will be provided with an offer letter, and opportunity to ask any questions.
9. Onboarding with our People Team begins.
10. Your start date arrives!

➡️ How to Apply

If you're excited to bring clarity and efficiency to the chaos of the lives of our senior leadership team, we’d love to hear from you!

Please submit an application via Greenhouse (our ATS), and include the following:

1. Your CV (in English), including information about prior work and education, and current skills
2. A short cover letter explaining why this role is a great fit for you (please add a bit of personality if you wish)
3. A link to your LinkedIn profile, and any other social profiles you wish to include
4. Any relevant written references or testimonials (optional, but appreciated, and may give your application a boost)
5. Your gross salary expectations, annually, in Euros (EUR). A range is specified in this job posting
6. Your notice period/available start date (the sooner the better for us)
7. Any special needs requirements that may apply

If you have any questions about OET or the role, we’d be happy to answer them should we invite you to take part in a screening call or interview.

Please note that due to the volume of applications we receive, we are not able to respond to individual emails or LinkedIn requests. Kindly submit your application via Greenhouse, and we will shortlist and reach out to candidates.

If you have not received a response within 3 weeks of submitting your application, please consider it unsuccessful at this point in time. We may, however, still reach out in future. Our team maintains Talent Pools, containing candidates shortlisted for contact for future roles that may arise.

Deadline to apply: None (ongoing, so long as this role is live on our website)

We look forward to meeting the next person who will become an invaluable part of our team! Thank you for your time, and for considering joining OET.

If this role is not for you, feel free to check back later for any future positions that may have been posted.