Senior Battery Electrical Engineer

World Aquatics; Ivry-sur-Seine; Sur place; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Equity package

Competitive compensation

Cutting-edge facilities

Dynamic international team

Résumé du poste

Gama, a NewSpace startup based in Ivry-sur‑Seine near Paris, seeks a senior Battery Systems Engineer to design and qualify next‑generation BMS hardware and software for space applications.

You will own the subsystem end‑to‑end, from calculations to test results, and contribute to a fast, hands‑on culture with world‑class aerospace engineers.

Qualifications

• MSc or equivalent in electrical engineering with hands-on battery systems or power electronics.
• Solid understanding of Li-ion cell behavior and pack design implications.
• Experience with BMS architectures: monitoring, balancing, and protection.
• Strong electronics design skills: high-current PCB design (heavy copper, busbars, creepage/clearance).
• Hands-on cell and battery testing experience: cyclers and thermal chambers.
• Autonomy in the lab: oscilloscopes, differential/isolated probes, power analyzers, electronic loads.
• Professional level English; further languages welcome.

Responsabilités

• Design and bring up battery pack electronics, including high‑current boards and protections.
• Define BMS architecture and hardware, including interfaces with the power converter.
• Develop BMS software: state estimation, balancing and charging strategies.
• Plan and execute test campaigns for cells, packs, and the BMS subsystem.
• Select and qualify cells for the LEO environment, including qualification testing.

Connaissances

Battery systems design

Power electronics

BMS architecture

State estimation (SoC/SoH)

High-current PCB design

Test campaign planning

Lab autonomy

English proficiency

Formation

Master of Science in Electrical Engineering

Outils

Oscilloscopes

Differential probes

Power analyzers

Electronic loads

Thermal chambers

Description du poste

Responsibilities

• Design and bring up the battery pack electronics: high-current board design, instrumentation, interconnects, wiring, and battery-side protections.
• Define the BMS architecture and design its hardware: monitoring, balancing and protection circuits, and interfaces with the power converter.
• Develop the BMS software functions: state estimation (SoC/SoH), balancing and protection logic, and battery charging strategies (CC/CV profiles, current/voltage limits over temperature and state of charge).
• Define and run test campaigns for cells, packs, and the BMS subsystem: cell screening and characterization, cycling and aging in the in-house cell testing laboratory, and functional validation of the BMS (protections, balancing, state estimation) on the battery board.
• Select and qualify cells and battery components for the LEO environment including battery cells supplier selection: qualification testing (thermal‑vacuum, radiation), derating analysis, and incoming inspection.

Qualifications

• Professional engineering education (MSc or equivalent) in electrical engineering / electronics, with 5+ years of hands‑on experience in battery systems or power electronics.
• Solid understanding of Li‑ion cell behavior from an electrical standpoint: electrical characteristics, aging mechanisms, safety, and their implications for pack design.
• Experience with BMS architectures: cell monitoring, balancing, and protection circuits.
• Strong electronics design skills: high-current PCB design (heavy copper, busbars, creepage/clearance), sensing chains, protections.
• Hands‑on cell and battery testing experience: cyclers, thermal chambers, test protocol definition.
• Autonomy in the lab: oscilloscopes, differential/isolated probes, power analyzers, electronic loads.
• Strong analytical skills, a proactive attitude, excellent interpersonal skills and unbounded curiosity.
• You enjoy owning your scope end‑to‑end.
• Professional level English — further languages welcome.

Nice to have

• Experience in space, automotive, aerospace, or other high‑reliability industries.
• Programming skills for BMS function implementation (embedded C or similar): state estimation, protection logic, charging strategies.
• Familiarity with electrochemical characterization methods: ACIR/DCIR, EIS, RPT-based protocols.
• Familiarity with power conversion and battery charging strategies (CC/CV profiles).

Company

Gama is a NewSpace startup based in Ivry-sur‑Seine, near Paris. We are developing a next‑generation power system for commercial LEO satellites — from solar array power conversion to battery energy storage. We design, build, and test our hardware in‑house, and we move fast: our engineers see their designs go from schematic to flight hardware.

We are a small team where ownership matters: you own your subsystem end‑to‑end, from first calculations to test results. We work hands‑on, we help each other without ego, and we treat mistakes as data — finding out why something failed is how we get better.

Benefits

• Your work will fly. Contribute directly to the future of space exploration and Sustainable Space.
• Access to cutting‑edge facilities and development opportunities in the heart of the European space industry.
• A steep personal development path, working alongside world class aerospace engineers.
• Equity package and competitive compensation.
• A highly talented, dynamic and international team.