Your role

• Probabilistic forecasting of electricity consumption and on-site generation at client premises — not only point forecasts, but the uncertainty estimates the control layer needs to make defensible decisions.
• Turning forecasts into control actions: converting forecasts and price signals into dispatch decisions across our clients' assets — batteries, PV and EV charging — with a single objective, minimizing their energy bill. In practice this means formulating and solving a constrained optimisation problem over each site's tariff structure, capacity limits and asset behavior, and doing it well enough that the result holds up when the forecast turns out to be wrong.
• Real-time execution, including control logic running on edge devices, that stays stable when conditions deviate from plan.
• Closing the loop between prediction, decision and execution, so the system runs unattended and improves on its own operating history. In practice: tracking forecast error against realized load and generation to drive retraining; comparing the savings actually achieved against what the optimiser expected, and attributing the gap to the forecast, the formulation or the asset; and correcting our models of the assets themselves — round-trip efficiency, degradation, state-of-charge drift — against what the fleet really does.
• R&D delivery: work alongside our Research Manager and top tier Research institutes on the data science workstreams of our ongoing research projects.

What we're looking for

• Mathematical optimisation is essential for this role: linear and quadratic programming, mixed-integer formulations, and ideally stochastic programming. You should be comfortable moving from a business objective to a formulation, and from a formulation to something that solves reliably within an operational time budget.
• A strong foundation in machine learning, time series forecasting and statistical modelling.
• Practical experience with real-time control algorithms on edge devices — PID, rule-based supervisory control, MPC, or comparable approaches you have deployed and maintained in the field.
• A problem solver by instinct: you're comfortable being handed an ambiguous situation, working out what's actually going on, and deciding what to do about it.
• The ability to explain a complex model or control decision to a non-technical audience — colleagues in sales and operations, and clients who want to understand why their battery did what it did.
• Commercial judgement: you can tell the difference between the solution that is optimal on paper and the one that goes live this quarter and starts paying for itself.
• Fluency in Python.

A clear plus

• Working knowledge of energy systems: electricity markets, load forecasting, asset dispatch, balancing mechanisms.
• Experience with AI Coding.
• Experience with AWS.
• A track record with messy field data — gaps, drift, sensors that contradict one another.
• Experience shipping models and controllers into production systems that run unattended, with monitoring in place. Notebooks are where the work starts, not where it ends.

What's in it for you

• Hardware in the loop. Your algorithms don't stop at an API boundary. They move megawatts through equipment installed at real sites.
• A short feedback loop. Models go live, are measured against real financial outcomes, and get improved. You'll know within days whether an idea worked.
• Room to set the direction. The team is small enough that your decisions about modelling, tooling and control architecture become the way Octave.energy does it.
• A mission with urgency. A renewable grid runs on flexibility: shifting demand towards the hours when the wind blows and the sun shines. Batteries, PV and EV charging are the three levers we pull, and better forecasting and control get more out of each of them.

We also offer

• An attractive salary package
• Offices in Mechelen and Brussels
• Flexible hours and hybrid working (2–3 days in the office)
• A collaborative team with genuine room to learn and grow in a fast-growing cleantech scale-up
• An attractive benefits package: Car/mobility budget, hospitalization & group insurance, training budget, cafeteria plan with 13th-month optimization, €10/day of lunch vouchers, eco-cheques and extra benefits (e.g., gym subscription).

About Octave.energy

Founded in April 2020, Octave.energy is a Belgian cleantech company specialized in battery energy storage and energy management services for businesses. We have sold over 200 MWh of storage capacity and operate the largest fleet of behind-the-meter batteries in Belgium. Backed by private investors, imec, and the European Commission's EIC Accelerator, we work at the forefront of the energy transition.

Interested?

Send your CV to recruitment@octave.energy, along with a few lines about something you've built — a forecasting model, a controller you designed, a project that shows how you approach a problem. We'll get back to you shortly.

Your role

As a Business Developer – BESS, you'll work closely with, and report to, our Business Development Manager Netherlands, who launched the Dutch market. Together you'll build Octave into an established name in the Dutch battery energy storage market.

• You identify, approach, and convince new installers and integrators to become Octave partners.
• You build lasting relationships with installation partners and guide them through the entire partner journey, from first introduction to successful first projects.
• You support installers both commercially and technically with questions from their end customers, including on grid congestion, connection capacity, peak shaving, and energy flexibility.
• You provide commercial product trainings and demos on our battery systems and EMS, so partners can independently run strong sales conversations.
• You attend relevant trade fairs, events, and networking opportunities in the Dutch energy sector.
• You identify market needs, competitive insights, and product feedback, and feed them back to the commercial and technical teams.

Who are you?

• You have at least 3 years of experience in B2B sales or business development, preferably in the energy sector, installation industry, or a technical environment. A network among small and medium-sized electrical installers is a plus!
• You combine commercial drive with technical affinity: you can hold an informed conversation about battery storage, EMS, grid congestion, and energy markets, or you're willing to quickly get up to speed.
• You have a true hunter mentality: you get energy from opening new accounts and convincing partners.
• You're a natural relationship builder who not only wins over installers but also makes them successful.
• You work independently, take initiative, and feel at home in a dynamic scale-up environment with short lines of communication.
• You're willing to travel regularly within the Netherlands to visit installers and partners.
• You're fluent in Dutch and can express yourself well in English.

Extra advantages

• An existing network of installers, integrators, or EPC companies in the Netherlands.
• Knowledge of the Dutch energy market: grid congestion issues, connection contracts, energy prices, and flexibility markets.
• Experience with channel sales or building a partner network.
• A technical education or background (electrical engineering, energy technology, or similar).

What do we offer you?

• A key commercial role in growing a young, fast-growing market.
• The opportunity to help build Octave's Dutch organization from an early stage, with real growth opportunities as the market grows.
• A lot of autonomy and trust, with strong commercial and technical support from the Belgian team and direct guidance from our Business Development Manager Netherlands.
• A competitive salary package, supplemented with a variable component.
• Flexible working hours and hybrid work.
• An open, collaborative culture with short decision-making lines.

Why Octave?

Octave is a Belgian cleantech scale-up, founded in 2020, specialized in battery energy storage and energy management for businesses. With more than 200 MWh of battery capacity, we manage one of the largest behind-the-meter battery fleets in Belgium and prove our technology works every day.

We are backed by private investors, imec, and the European Commission's EIC Accelerator Fund, and are building strong European growth. The Netherlands is one of our most important growth markets.

Interested?

Do you see yourself as the person who will build out Octave's installer network in the Netherlands?
Send your CV and a short motivation to recruitment@octave.energy.

Your Role

EMS Business Development

• Contribute to the EMS commercial strategy, identifying target markets, customer segments, sales channels, and growth opportunities.
• Build and maintain strong relationships with key partners, including installers, integrators, energy suppliers and end customers.
• Identify, negotiate, and develop strategic partnerships that accelerate the adoption and deployment of Octave's EMS solutions.

Revenue Growth

• Drive revenue growth through effective sales, pricing, and market positioning strategies.
• Develop and manage the EMS sales pipeline and business development activities.
• Contribute to the commercial objectives, track performance, and continuously improve sales effectiveness.
• Support partners throughout the sales process and help remove barriers to successful project delivery.

Market & Product Strategy

• Contribute to the definition and evolution of Octave's EMS value proposition and go-to-market strategy.
• Collaborate with the marketing team to promote Octave’s EMS solutions and strengthen Octave’s market presence.
• Represent Octave.energy at industry events, trade fairs, and customer meetings.
• Work closely with management team to align commercial activities with overall business strategies and provide inputs for product development.

Skillset

• Strong business development, sales, or commercial experience in the energy field.
• Proven track record of growing revenue and developing partnerships.
• Strong commercial negotiation and stakeholder management skills.
• Desire to work in a fast moving and entrepreneurial environment.
• Fluent in Dutch and English. French is a plus.

With some (or all) of the following points, you have a clear plus

• Master's degree in the field of economics or engineering, or equivalent level of experience.
• Fluency using MS Excel and interest in AI tools.
• Experience with Odoo is a nice to have.

What’s in it for you

An incredibly interesting and diverse job in a dynamic and fast-growing company. We offer the opportunity to further develop a marketing & sales approach for an innovative product and become a driving force in the transition to sustainable energy.

We also offer

• An attractive salary package.
• A nice office in Mechelen.
• Flexible working hours with hybrid working (2–3 days in the office, 2–3 days remote).
• A collaborative team environment with strong learning and growth opportunities in a fast-growing cleantech scale-up.

Why join Octave.energy

Founded in April 2020, Octave.energy is a Belgian cleantech company specialized in battery energy storage and energy management services for businesses. Octave.energy has sold over 180 MWh of battery energy storage capacity and operates the largest fleet of behind-the-meter batteries in Belgium. Backed by private investors, Imec, and the EIC Accelerator of the European Commission, Octave.energy is working on large-scale projects at the forefront of technology and sustainability.

How to apply

Interested in joining Octave.energy as an EMS Business Development Manager?

Send your CV to recruitment@octave.energy and we’ll get back to you as soon as possible.