BESS Senior Engineer

About the role

3E is looking for a Battery and Energy Storage System (BESS) Senior Engineer to join its Expert (Engineering) Services team in Cape Town, South Africa. The workplace is hybrid and the goal is to strengthen and expand the company's advisory position in renewable energy across Sub-Saharan Africa.

Key responsibilities

• Technical expertise: advise clients on battery technology selection and system sizing, including hybridisation with solar and wind; assess technical and financial feasibility of BESS projects in African markets; conduct market and regulatory analysis and identify revenue streams such as energy trading, ancillary services and flexibility markets.
• Support BESS projects from early design through contracting, construction and commissioning, including technical specifications, procurement and contractor evaluation.
• Help clients improve system availability, performance and lifespan, and support grid integration of storage into utility and hybrid systems.
• Contribute to the development of 3E's storage offering and a regional roadmap, and build tools, templates and guidelines for consistent delivery.
• Mentor colleagues and share technical knowledge and best practices across global offices.

Required profile

• Master's degree in Electrical Engineering, Energy Systems or equivalent.
• 3-5 years of industry experience in BESS design and deployment focused on Li-ion technology.
• Strong project management skills and ability to handle several projects at once.
• Interest in renewable energy, analytical, structured and solution-oriented, with good communication and presentation skills.

Required skills

• BESS design and deployment with Li-ion batteries
• Project management
• Optional: BESS simulation software, solar energy experience, basic Python, fluency in French

What we offer

• Salary in line with experience, plus laptop, medical aid and phone allowances.
• 18 leave days (24 after one year of service) and a 13th-month end-of-year bonus.
• Flexible working and home office.
• An international environment with projects in over 100 countries and colleagues of more than 37 nationalities.