Rebaba is building circular battery systems from second-life EV batteries. Our products power buildings, industries, and charging infrastructure while reducing costs and emissions. We design and assemble our systems in Sweden and combine hardware, embedded software, and cloud control into one integrated platform.

We are now hiring a Certification Engineer to build and own our certification process from the ground up, making sure everything we design, build, and ship meets the standards, directives, and safety requirements. You will shape how Rebaba certifies BESS systems today and become one of the few real experts in the world in certifying second-life BESS. If you want to go deep on real electrical systems, own a process end to end, and become a genuine expert in a field that barely exists yet, we would love to hear from you.

As Certification Engineer at Rebaba you will own the full certification process for our BESS products, from reading and interpreting the applicable directives and standards, to defining what needs to be tested and how, to producing the technical documentation that proves it. This is a hands-on role that sits between engineering, quality, and delivery. You will work closely with our engineering team and external certification partners, and over time become the internal and external authority on what it takes to certify second-life battery systems for European markets.

Responsibilities

Build, own, and continuously improve Rebaba's certification process for BESS products, covering LVD, EMC, and the EU Battery Regulation

Interpret and apply the standards, directives, and regulations governing battery systems, electrical safety, EMC, and enclosures (e.g. IEC 62619, IEC 62933, UN 38.3, CE marking, the Low Voltage and EMC Directives, RoHS), and determine which requirements are applicable to our specific product design

Translate standards and customer, grid, and safety requirements into clear, traceable technical requirements for the engineering teams, and maintain requirements traceability across product development

Define what tests need to be run, how, and against which acceptance criteria, based on the relevant standards

Plan and manage compliance and certification activities as projects - scope, timeline, testing, documentation, and sign-off

Coordinate and align certification processes with notified bodies, test labs, and external partners; select and manage external test labs

Own technical compliance documentation, including declarations of conformity, technical files, risk assessments, and test reports, ensuring every compliance claim is traceable to a primary source

Lead product safety, hazard, and risk analyses for our battery systems

Track open regulatory and standard-interpretation questions, escalate where needed, and drive them to closure

Work closely with electronics, mechanical, software, and quality teams to build compliance into the design from the start

Keep Rebaba ahead of evolving standards and regulatory requirements in energy storage, and feed changes back into the product

Lay the path for how certification scales as Rebaba expands into new products and markets

Requirements

Experience with power electronics and electrical systems in one or more of: UPS systems, PV inverters, LV switchgear, EV charging infrastructure, motor drives/VFDs, EV battery packs, or stationary battery/backup power systems

Solid understanding of core electrical concepts relevant to BESS: insulation coordination, DC/DC or DC/AC power conversion, contactor/switching logic, short-circuit protection

Comfortable reading and working directly with electrical schematics and system architecture, not just specifications

Well-versed and structured in requirements analysis and requirements management

Comfortable working across electronics, mechanical, and software teams and translating between them

You are exceptionally rigorous and precise, read regulations and standards carefully and literally

You have the patience to trace every claim back to its source, and the discipline to keep detailed, structured records over long-running projects

Professional English; Swedish is a plus

You thrive in an entrepreneurial environment with fast decision cycles and high autonomy

You are excited about clean energy and want to build something you believe in

Meriting

Prior experience with product certification, CE marking, or regulatory compliance

Experience with IEC 62933, IEC 62477-1, IEC 61439-1, IEC 62619, or IEC 60664-1

Background in battery chemistry, EV batteries, or second-life applications

Prior direct contact with notified bodies or testing laboratories

Experience with gap analysis or risk tracking in technical/regulatory projects

Benefits

Own certification end to end, in a field where the playbook is still being written

Become one of the few real experts in certifying second-life BESS, in Europe or anywhere

Close collaboration with a small, hands-on engineering team

A mission-driven company focused on sustainable energy solutions

A clear path to grow as Rebaba scales - in seniority, responsibility, and scope

About Rebaba

Rebaba is at the forefront of sustainable energy storage solutions. We specialize in giving second life to electric vehicle batteries, transforming them into efficient energy storage systems. Our mission is to accelerate the transition to renewable energy while reducing waste and environmental impact.