Battery Software and Controls Assurance Specialist

Solaris Bus & Coach sp. z o. o. is a leading European manufacturer of city and suburban buses. Its activity is focused on the development of low- and zero-emission vehicles - electric, hydrogen and trolleybuses. Over 26,000 Solaris vehicles delivered to date operate in 33 countries and 850 cities throughout Europe and beyond. Solaris belongs to the Spanish CAF Group (Construcciones y Auxiliar de Ferrocarriles) SA and employs over 3,000 people in Poland and abroad. The brand's vehicles, from the idea through the design and implementation phase, are manufactured in Poland. The entire activity of the manufacturer is consistent with the mission contained in the slogan: "We are changing the face of public transport". Solaris is also an active partner for public transport operators in the zero-emission transport transformation process. The company's vehicles have been awarded many times for quality and innovation. The Urbino 18 hydrogen bus won the prestigious title of "Bus of The Year 2025".

We are currently looking for candidates for the role of

Battery Software and Controls Assurance Specialist

Location: Bolechowo - Osiedle, hybrid model - 50/50 monthly

Your tasks

• executing functional and software validation campaigns,
• running test cases on HIL (Hardware-in-the-Loop), SIL (Software-in-the-Loop), and real battery packs,
• monitoring live data streams and logs to detect anomalies in real time,
• collaborating with cross-functional teams to deliver detailed test reports, including plots, logs, and root cause analysis,
• conducting fault injection campaigns (e.g., sensor failures, communication drops, thermal excursions) to validate fault detection and mitigation strategies,
• verifying system behavior in degraded modes and ensure safe fallback mechanisms are triggered,
• calibrating and tunning battery control parameters based on test results (e.g., current limits, thermal thresholds, SOC/SOH estimation),
• analyzing logs and debug software behavior using tools like CANalyzer, Python (Jupyter Notebook), and other in-house tools,
• correlating log data with expected behavior to identify bugs or misconfigurations,
• logging issues in defect tracking systems (e.g., OTRS, JIRA) and follow up with software and systems teams,
• participating in issue triage meetings to prioritize fixes and ensure timely resolution.

Our expectations

• experience in battery management systems, embedded software validation, or control systems engineering,
• familiarity with HIL/SIL environments and fault injection techniques,
• proficiency in data analysis and debugging tools (e.g., CANalyzer, Python),
• understanding of battery system behavior and control logic,
• strong analytical and problem-solving skills,
• experience with defect tracking tools and agile development processes,
• excellent communication and teamwork skills,
• very good English command.

What do we offer?

• annual bonus,
• vacation subsidy,
• meal subsidy in the employee canteen,
• private healthcare - PZU Zdrowie,
• benefit platform - you decide what to use - Sports card - Multisport/Medicover Sport, points to spend (e.g., cinema, shopping, restaurants, trips),
• group insurance,
• foreign language learning - online English classes with a teacher sponsored by the employer,
• training and development - the opportunity to participate in internal recruitment, training relevant to your position and business needs, internal training, and the possibility of co-financing postgraduate studies,
• employee parking,
• employee referral program - a financial bonus after hiring a recommended employee,
• employee pension program - voluntary additional retirement funds,
• "I Have an Idea" program.