Process Engineer - Cell Assembly

Lyten; Skellefteå kommun; On-site; SEK 550,000 - 850,000; Full time

Job summary

Lyten is seeking a Process Engineer specialized in Laser and Ultrasonic welding to drive development, qualification, and optimization of high‑volume joining processes for dissimilar materials and thin metals.

You will lead DOE studies, develop WPS and control plans, and apply SPC/Lean methods to reduce defects and improve yield, collaborating with design and manufacturing teams across global operations.

Qualifications

• Bachelor’s degree in Welding Engineering, Materials Science, Mechanical Engineering, or a related field.
• 3+ years of experience in Process Engineering with Laser/Ultrasonic Welding.
• Deep knowledge of welding metallurgy, HAZ, SPC software and NDT methods.

Responsibilities

• Design and execute DOE methodologies to define and optimize welding parameters for new products and materials.
• Develop and qualify Welding Procedure Specifications (WPS) and process control plans for Laser and Ultrasonic welding.
• Apply SPC and Lean Manufacturing principles (FMEA) to monitor performance, reduce variability, and drive yield and cost improvements.
• Lead Root Cause Analysis and implement corrective actions for welding defects such as porosity, cracking, and spatter.
• Collaborate with Product Design/R&D to optimize manufacturability of new designs.
• Define specifications for and participate in selecting, installing, and commissioning welding equipment and tooling.
• Create Bill of Process, SOPs, and training programs for weld technicians.
• Authorize temporary process halts when weld quality or safety is compromised.

Skills

Welding metallurgy

HAZ

SPC software

NDT methods

Education

Bachelor’s degree in Welding Engineering, Materials Science, Mechanical Engineering

Tools

DOE

Welding Procedure Specifications (WPS)

Process control plans

Job description

Lyten is leading an industrial revolution through Lyten 3D Graphene™, a breakthrough supermaterial unlocking a new generation of products — from lithium–sulfur batteries and energy storage systems to concrete admixtures, lightweight composites, and next‑generation sensors that are revolutionizing industries. Together, these innovations are making a massive global improvement and driving real‑world impact across energy, mobility, construction, and defense.

At Lyten, we believe the most meaningful careers begin with purpose — and with people who want to make a difference. We’re not just developing advanced supermaterials — we’re about to change the world as we know it, reshaping how energy is stored, how products are built, and how progress is made.

We’re entering an exciting growth phase, scaling production across the U.S. and Europe and expanding our team of engineers, scientists, and innovators.

Job Scope

The primary purpose of this role is to develop, characterize, and optimize advanced welding processes, specifically Laser Welding and Ultrasonic Welding, to ensure high‑quality, high‑volume production. This engineer acts as the subject matter expert (SME) for process capability, yield improvement, and defect reduction in critical joining applications, particularly for thin metals, plastics, or dissimilar materials (e.g., in battery components or electronic assemblies).

Key Responsibilities

Key responsibilities include (but are not limited to)

Process Development & Qualification

• Design and execute Design of Experiments (DOE) methodologies to define and optimize critical welding parameters (e.g., laser power, welding speed, focal distance, pulse duration, ultrasonic pressure/amplitude) for new products and materials.
• Develop and qualify Welding Procedure Specifications (WPS) and process control plans for both Laser and Ultrasonic welding in accordance with industry codes (e.g., AWS, ASME)

Optimization & Improvement

• Apply Statistical Process Control (SPC) and Lean Manufacturing principles (FMEA) to monitor process performance, reduce variability, and drive continuous improvement in yield, throughput, and cost.
• Lead Root Cause Analysis (RCA) and implement corrective actions for welding defects such as porosity, cracking, tears, cold welds, spatter, and material deformation.

Design for Manufacturability (DFM)

• Collaborate with Product Design/R&D teams to ensure new product designs are optimized for manufacturability using specialized welding technologies (e.g., recommending optimal joint configuration and material fit up).

Equipment & Tooling

• Define specifications for and participate in the selection, installation, and commissioning of new Laser and Ultrasonic welding equipment and custom tooling/fixtures. Knowledgeable in CE and regulatory requirements.
• Work with equipment and manufacturing to define and document the process set up and parameters.

Training & Documentation

• Create detailed Bill of Process (BOP), work instructions standard operating procedures (SOP) and training programs for welding technicians and operators to ensure process adherence and safety.

Accountability/Authorization

• Budget responsibility: No
• Direct reports: No
• Manager work environment responsibility: No
• All employees are accountable for complying with safety regulations and actively supporting a safe workplace.
• Decision Authority: Authorized to recommend temporary process halts when weld quality or safety is compromised. Can define and update process parameters within the qualified WPS range.

Requirements

Educational background, experience and skills.

Education

• Bachelor’s degree in Welding Engineering, Materials Science, Mechanical Engineering, or a related field.

Experience

• 3+ years of experience in Process Engineering, with direct hands‑on experience in Laser Welding and/or Ultrasonic Welding.

Technical Skills

• Deep knowledge of welding metallurgy, HAZ, SPC software and NDT methods

Why Work at Lyten

At Lyten, you’ll be part of a team that’s redefining what’s possible in energy, materials, and manufacturing. We’re not just imagining the future — we’re building it today with breakthrough technologies that are changing how products are made and how industries innovate.

Our people are the heart of that mission. From world‑class scientists and engineers to creative problem‑solvers in operations, manufacturing, and commercialization, every member of the Lyten team plays a role in turning bold ideas into real‑world impact. We believe that the best work happens when you’re doing great things in the world — with people you like. Collaboration, curiosity, and a shared sense of purpose drive everything we do.

What You’ll Find at Lyten

• A mission that matters: Contribute directly to solving complex challenges in energy, mobility, and materials innovation.
• Cutting‑edge innovation: Work on technologies at the intersection of materials science, energy storage, and advanced manufacturing that strengthen energy security and local supply chains.
• Extraordinary people: Join a team of talented, friendly, and down‑to‑earth innovators who support, challenge, and inspire one another every day.
• Teamwork and culture: Experience a workplace built on trust, respect, and shared success — where collaboration fuels breakthroughs and everyone’s ideas are heard.
• Global impact: Help scale new materials and energy solutions that reinforce industrial resilience across the U.S. and Europe.
• Career growth: Be part of a fast‑moving company entering a commercial growth phase, with opportunities to lead, learn, and make your mark.
• Purpose‑driven values: Thrive in an environment that celebrates ingenuity, optimism, and meaningful progress — together.

Lyten offers the opportunity to do the most important work of your career — helping build the technologies that will power the next century of innovation.

Join us, and help transform industries, communities, and the planet with friends who share your drive to make a difference.