Software Engineer

We’re obsessed with building a world-class experience for everyone who joins the team. You’ll be proud of telling people where you work and the impact you’re having. You’ll be surrounded by the brightest and smartest minds, in a fast-paced environment as we build something truly special and necessary for the world.

As a company and leadership team, we’ll double down on our investment in you – making sure you have the conditions needed to succeed; that means funding, autonomy, a voice so you know your ideas are heard, and the ownership of something that really matters in helping to deliver on our mission.

Relyion Energy is looking for an ESS Software Engineer to join their quickly growing team. In this role, you will be part of a larger team with the mission to enable a Circular Economy and provide a second life to EV batteries. The ideal candidate would have recent experience in a small start-up environment or be comfortable joining a company at this early stage. The company is in the process of closing its seed fundraising round so the opportunities are boundless. This role reports to our CTO and you would be one of 6 – 8 team members within this critical organization. This is a 100% on-site position with limited to no remote opportunity

• Responsible for the EMS/BMS Work across multiple charging system domains.
• Responsible for the design, development, and execution of Battery Management System (BMS) software and controls applications in both 48V and high-voltage battery systems
• Responsible for specifying, implementing, and validating BMS software related to electric battery and charging systems
• Author BMS software requirements and specification document
• Work with Battery Systems and supplier teams to develop a functional design and implementation of battery management system software features
• Implement and validate functional requirements including simulation of battery storage systems

• BS/MS in Electrical / Mechanical Engineering / Computer Science
• 3 – 5 years’ experience in developing and integrating software solutions with electric vehicles, EV charging and Stationary Charging solutions
• Extensive experience with BMS systems in Battery application for Grid/Microgrid, C&I and Residential applications
• Experience with Embedded Linux systems
• Experience with Bluetooth/CAN/Modbus communications
• Experience with development of User Interfaces is required
• Expert Software programming skills in Python
• Experience with AI is required
• Knowledge of UL and CE Certification requirements is desirable
• Ability to work without Visa sponsorship
• A “success” oriented mindset

• Ability to thrive in a fast-paced startup environment, adapting quickly to evolving priorities and challenges.
• Exceptional communication skills, including the ability to effectively engage with boards, partners, and investors through compelling presentations at meetings and conferences.

The company is committed to fostering a diverse and inclusive workplace. Employment decisions are based solely on merit, qualifications, and competence, and will not be influenced by factors such as race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.