Do you enjoy working on real energy systems at the intersection of engineering, customers, and deployment? Are you comfortable switching between technical due diligence, system integration, and commissioning & troubleshooting?
Octave is looking for a Field Applications Engineer - BESS to ensure our battery energy storage projects are technically sound from specification and procurement all the way to installation, commissioning, and reliable operation in the field.
Your role:
As Field Applications Engineer - Battery Energy Storage Systems (BESS), you will be a key technical interface between Sales, Purchasing, Engineering, and our customers/installation partners.
* You support customers and partners during the installation, commissioning, and problem-solving of their battery energy storage systems.
* You provide technical support to Sales: validate use cases, review technical requirements, and support solution definition for BESS projects.
* You provide technical support to Purchasing / supplier selection: review and challenge technical specifications, ensure compliance with requirements, and support technical evaluation of BESS components and systems.
* You perform electrical and system integration engineering for BESS projects at customer sites (interfaces, protections, controls, grid connection considerations, documentation).
* You troubleshoot electrical, system-level, and software-related issues in collaboration with the software and operational teams.
* You deliver mainly remote support, with occasional on-site support whenever required.
* You document issues, solutions, and best practices to continuously improve internal processes, customer support and system reliability.
What we are looking for:
* A background as an electrical engineer (Bachelor or Master level, or equivalent experience).
* Knowledge of electrical systems, norms and regulations (electrical distribution and installation, transformers, earthing, protection equipment, AREI, …).
* Hands-on, problem-solving mindset with a strong sense of ownership.
* Knowledge of battery energy storage system (batteries, inverters, EMS).
* Experience with commissioning, troubleshooting, or field support of Low voltage (up to 1000VAC and 1500VDC) AC and DC systems. Holding a BA5 certification is a plus but can also be obtained on the job.
* Willingness to interact directly with customers and installation partners.
* Basic experience with or interest and willingness to learn:
* Linux bash, Python, Networking.
* You don’t need to be a software expert, curiosity and learning ability matter more.
* Fluent communication skills in English and either Dutch or French.
What we offer:
* A hands-on technical role in a fast-growing cleantech scale-up.
* Direct involvement in real battery energy storage projects.
* Flexible working hours with hybrid working (2–3 days in the office, 2–3 days remote, occasional on-site support).
* A collaborative team with strong expertise in batteries, energy markets, and software.
* Competitive salary package.
* Flexibility, autonomy, and room to grow technically and professionally.
Why Octave?
Octave is a Belgian cleantech scale-up founded in 2020, specialized in battery energy storage and energy management solutions for businesses. With over 120 MWh of deployed battery capacity and the largest behind-the-meter battery fleet in Belgium, we operate at the cutting edge of flexible energy systems.
Supported by private investors, imec, and the EIC Accelerator Fund of the European Commission, Octave is scaling its technology and operations across Europe.