Cell Validation Engineer
Altris
Company Overview
Altris AB
HeadquartersUppsala, Sweden
Founded2017
SizeApproximately 50 employees (source: zoominfo.com). Revenue of $13.6 million (source: zoominfo.com).
What They Do
Altris AB focuses exclusively on sodium-ion battery technology, developing cathodes, electrolytes, and full cells using abundant, low-cost materials like sodium, iron, carbon, and nitrogen to avoid lithium, cobalt, nickel, and conflict minerals (source: altris.se). Their core product is Fennac®, an iron-based cathode material similar to lithium iron phosphate (LFP) in voltage and capacity but cheaper to produce, with higher power, better low/high-temperature performance, and no thermal runaway risk; it's produced via a low-energy process at scale (source: winway.se). They also offer patented NaBOB fire-retardant electrolyte and complete sodium-ion cells with energy density matching LFP, using compatible production lines (source: altris.se). Target markets include grid storage (commercial/residential), commercial transportation (buses, trucks, marine), and low-cost personal vehicles (two/three-wheelers); they license cells, electrolytes, and processes to customize for customers (source: altris.se). Altris differentiates through a fully European supply chain, cost stability from abundant materials, superior safety, and rapid commercialization, positioning it ahead of lithium-dependent rivals amid CATL's 2020 endorsement of sodium-ion; they've secured automotive/energy partnerships while scaling to gigawatt-hour output (source: uic.se).
Projects & Track Record
Altris has no large-scale completed projects publicly detailed as turnkey installations, focusing instead on material production ramp-up and cell prototyping; their Uppsala R&D line produces up to 100 MWh/year of cells, while Sandviken's Ferrum facility (launched 2023 via deal with AB Sandvik Materials Technology) hit 2,000 tonnes/year of Fennac by design, enabling 1-3 GWh batteries annually (source: altris.se). Ongoing projects include expanding Uppsala cell production to 15 MWh, establishing a pilot plant for sodium-ion cells with SEK 77 million from Swedish Energy Agency (Industrial Leap/NextGenerationEU programs), and scaling Fennac output to meet 2022 demands pre-Ferrum (source: youtube.com). Key clients and partners encompass Northvolt, Volvo Cars, Clarios (low-voltage batteries), Maersk Growth (maritime), and recent collaborators like Ligna, Jemac, RISE (ultrathin sodium-ion battery for electronics, Vinnova-funded) and Oscilion (Nordic sodium-ion module for military, with initial orders) (source: altris.se). Geographic presence centers on Sweden (Uppsala/Sandviken), with European partnerships and Asian outreach for mass-market adoption; expansion targets full-scale production within three years of earlier funding rounds (source: winway.se).
Recent Developments
In 2024, Altris raised SEK 150 million ($14.5 million) in Series B1 from Clarios, Maersk Growth, EIT InnoEnergy, and Molindo to expand production and European market presence (source: ess-news.com). Recent funding includes SEK 80.75 million from existing investors, following SEK 77 million Swedish Energy Agency grant for a pilot cell plant (source: altris.se). Earlier, €4.8 million (SEK 50 million) bridge financing in 2023 supported industrial manufacturing in Uppsala, with appointments of Björn Mårlid as CEO and Christer Bergquist as CFO (Bergquist later permanent CEO) (source: zoominfo.com). In 2025, Altris launched collaborations for ultrathin sodium-ion batteries (with Ligna/Jemac/RISE) and military modules (with Oscilion, initial orders secured); they earned third consecutive Ny Teknik 33-listan 'golden company' nod as Sweden's top innovative tech firm (source: altris.se). Prior rounds: €9.6 million (SEK 100 million) Series A for 2,000-tonne Fennac scale-up (enabling 1 GWh/year), €7.3 million from InnoEnergy, and €4.8 million bridge; total funding exceeds $29.8 million across four rounds (source: altris.se).
Working There
Altris seeks battery experts for roles in designing, producing, and licensing cells, electrolytes, and processes, spanning R&D, materials science, production engineering, and commercialization teams; open positions are listed on their site, emphasizing customized customer solutions (source: altris.se). Hiring occurs at Uppsala (R&D/cell production) and Sandviken (cathode factory) (source: altris.se). Company culture highlights a tight-knit community of passionate specialists driving planetary impact via sustainable energy, supported by early-stage programs like UIC Startup (2018), Build (2019), and Swedish Scaleups (2021-2023) for structure and funding (source: uic.se). No specific benefits like salaries or perks are publicly documented in sources, though employee participation in recent €4.8 million bridge funding indicates stock incentives (source: zoominfo.com).
Last updated on Feb 23, 2026 | Report an issue
We are seeking a one year temporary Cell Validation Engineer to join our Cell Development team at Altris, where we are pioneering the next generation of Sodium-Ion battery technology. This role is centered on cell-level testing and analysis, and is ideally suited to someone who enjoys working at the interface between early-stage prototype development and scale-up to larger-format cells.
As a Cell Validation Engineer, you will work in the core of Altris - where battery cells are manufactured. You will work with the cell validation activities to confirm performance, safety and reliability of cells against project requirements, ensuring readiness for customer delivery and scale-up.
The Cell Validation Engineer reports into the cell development team and is responsible for conducting a wide variety of tests on battery cell level. The primary focus is in-house electrochemical testing, however the role extends to covering externally conducted tests (electrochemical, environmental, safety, abusive and certification testing). The cell test engineer will collaborate closely with the cell development team to design tests, prepare cells for testing, execute the test and report the results in an efficient way.
You will work in a modern workplace with a new innovative battery technology with the aim of enabling the transition to a carbon free society.
Main Responsibilities
- Responsible for full end to end cycle of testing on cell level (R&D Samples and Production samples) from planning through to reporting
- Prepare test protocols and scripts in accordance with customer requirements and internal requirements
- Preparation of the DUT (Device under test) including but not limited to: additional sensors or measurement devices, planning test channel allocation
- Executing on the test whilst keeping safety as a number one priority
- Reporting results and drawing conclusions. The individual shall be very strong in documentation and have a desire to standardise the data handling and reporting
- Summarise test results, draw conclusions in close collaboration with cell development engineers and communicate results in an effective way through reports and presentations internally and for customers.
- Identifying, executing and managing tests with external partners (environmental, safety, certification etc).
- Ensure that our validation equipment is maintained regularly and kept in great conditions, including testing channels, temperature chambers and computers controlling the systems.
- Participate in root cause analysis if the formation and aging (F&A) cycles are out of specification for the pilot scale production
What We´re looking for
At Altris we value individuals who are keen to learn and develop their own skill set. If you're a problem solver who loves batteries and making complex things work, then this is the place for you. Beyond that we imagine that you have some of the following points on your resumé:
- Engineering Degree (any area, but preferably with a battery focus)
- 4+ years Practical experience working with cell validation is required with experience ranging from designing tests, executing tests, analysing data and reporting results.
- Basic understanding of battery cell components (cathode, anode, separator, electrolyte etc) is required
- Experience with data handling and drawing conclusions from complex data sets, preferably trough scripts, data bases and other ways to systematise the data.
What you will get
We can promise you that you will be challenged, develop your skills and have the opportunity to work with truly amazing and competent colleagues. If you like changes and want to set new processes and ways of working - this is the place for you!
Diversity and inclusion are very important to us and we are committed to creating an inclusive work environment. We want to be a workplace where everyone's perspectives and opinions are valued, and we are dedicated to creating opportunities for all employees to thrive and reach their full potential.
Apply now
Job expired?Please let Altris know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
Apply now
Job expired?Please let Altris know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
August 26, 2026
August 26, 2026
Contract position
On-site
Company
- Uppsala, Sweden
4+ years
UTC+01:00