Test Engineer - Energy Storage Systems

Lyten Poland Sp. z o. o; Stockholms kommun; On-site; SEK 502,200 - 781,200; Full time

Job summary

Lyten Poland Sp. z o. o is looking for a skilled HIL Tester in Stockholms kommun, Sweden. The role requires 3+ years of experience in HIL testing for battery management systems. Candidates must have strong skills in Python or LabVIEW, and an understanding of functional safety standards.

You will be responsible for validating BMS hardware, designing automated test suites, and running large-scale test campaigns. Join a collaborative team driven to succeed in real-world energy solutions.

Qualifications

• 3+ years of experience in HIL testing for BMS or power-electronics systems.
• Proficient in Python and/or LabVIEW for automation.
• Ability to read schematics and PCB layouts, and understand embedded C firmware.
• Experience with functional-safety standards like ISO 26262 and UL 1973.

Responsibilities

• Own validation and verification of BMS hardware using HIL tests.
• Design and execute automated test suites for reliability and performance.
• Run large-scale test campaigns and analyze test data.
• Produce test specifications and reports for stakeholders.

Skills

HIL testing experience

Python

LabVIEW

Analyzing test data

Understanding schematics

Functional safety standards

Fluent English

Education

B.Sc. or M.Sc. in Electrical Engineering

Tools

Real-time simulators

Programmable power supplies

CAN/Ethernet interfaces

Job description

What you’ll do

• Own the validation and verification of BMS hardware using HIL test environments.
• Design, develop, and execute automated test suites covering functional safety, performance, reliability, and fault scenarios.
• Build, maintain, and improve HIL setups that emulate battery cells, modules, and system‑level dynamics.
• Run large‑scale test campaigns including functional, stress, thermal, fault‑injection, and transient‑event simulations.
• Analyze test data, identify root causes of failures, and collaborate with cross‑functional teams to drive corrective actions.
• Ensure traceability between system requirements, safety standards, and test results.
• Produce clear test specifications, reports, dashboards, and release documentation for engineering and management stakeholders.

What you bring

• 3+ years of hands‑on HIL testing experience for BMS or power‑electronics systems.
• Strong skills in Python and/or LabVIEW for test automation.
• Ability to read and understand schematics, PCB layouts, and embedded C firmware.
• Experience writing test plans, acceptance criteria, and traceability matrices aligned with system and safety requirements.
• Familiarity with functional‑safety standards such as ISO 26262, IEC 61508, UL 1973 is a strong plus.
• A B.Sc. or M.Sc. in Electrical Engineering or a related field.
• Fluent English, written and spoken.

Technical strengths

• Hands‑on experience building and maintaining HIL platforms, including real‑time simulators, programmable power supplies, and CAN/Ethernet interfaces.
• Ability to develop robust, repeatable automation scripts for high‑volume and regression testing.
• Strong analytical skills to collect, process, and interpret test data, turning results into actionable insights.
• Proven ability to diagnose issues across hardware, firmware, and system models.

How you succeed here

You take full ownership of your work and see validation as a critical part of product success. You enjoy solving complex technical problems and collaborating in fast‑paced, international teams. You’re curious, quality‑driven, and motivated by seeing your work used in real‑world energy systems. You bring flexibility, positive energy, and a sense of humor, and you’re excited to take on meaningful challenges.