Assembler (m/w/d)

Job Description

Energy storage is the most exciting area in energy today. Massive amounts of energy storage are required if renewable energy is to take its rightful place on the electric grid. Invinity provides an alternative to the most common type of battery, lithium-ion because the battery technology that works so well in our pockets doesn't work as well at the grid scale; it wears out, limits use, and even catches fire.

Manufactured as a standardised product in a factory, Invinity's vanadium flow batteries don't degrade, won't catch fire, and can be operated continuously from full charge to full discharge for over 30 years. Invinity has 75 megawatt-hours of its modular battery systems in 82 projects across 15 countries - more than any other company in the space. We've deployed the largest flow battery systems in the U.S., Canada, Australia, and the UK, and are supported by the UK's National Wealth Fund, some of the world's leading institutional investors and our projects are backed by major institutions including the U.S. Department of Energy and the UK Government.

A compelling product and recent funding put Invinity in a position to grow dramatically as it addresses the global imperative for stationary energy storage. Join us as we help transform renewable energy into a stable and dependable contributor to the transition to net zero.

Invinity has operations in the UK, Canada and the U.S. and trades publicly in the UK on AIM and in the U.S. on OTCQX. For more information about us visit our webpage.

Role Purpose

The Assembly Worker is responsible for the precise and efficient assembly of panel components used in Vanadium Flow Battery (VFB) systems. This role requires attention to detail, mechanical capability, and the ability to work with specialised tools, materials, and processes to ensure high-quality, leak-free, and structurally sound battery panels.

Key Responsibilities

Panel Assembly

• Assemble battery panels and sub-components following technical drawings, work instructions, and standard operating procedures (SOPs).
• Potentially handle membranes, frames, electrodes, gaskets, seals, and fasteners carefully to prevent contamination or damage.
• Ensure correct alignment, compression, and fastening of panel stacks to required tolerances.

Quality Control

• Conduct in-process checks and final inspections to verify panels meet dimensional and quality standards.
• Identify defects such as misalignment, seal issues, surface damage, or contamination.
• Record assembly data accurately, including batch numbers, measurements, and inspection outcomes.

Equipment & Process

• Use hand tools
• Potential work within chemical handling protocols relating to electrolytes or cleaning agents (training provided).
• Follow EHS procedures around handling vanadium electrolyte components and cleanroom/controlled-environment practices where applicable.

Collaboration & Continuous Improvement

• Work collaboratively with Production Technicians, Engineers, and Quality teams to solve assembly issues.
• Suggest improvements in processes, tooling, and work methods to enhance repeatability and efficiency.
• Participate in training, cross-skilling, and improvement initiatives.

Skills & Competencies

Essential

• Experience in technical or precision assembly work (electronics, automotive, aerospace, precision manufacturing, etc.).
• Ability to follow detailed technical instructions, drawings, and quality standards.
• Strong attention to detail and commitment to high-quality work.
• Basic mechanical understanding and confidence using hand tools.
• Good communication skills and ability to work as part of a team.

Desirable

• Experience assembling electrochemical, battery, fuel cell, or similar energy storage components.
• Familiarity with cleanroom or controlled-environment procedures.
• Experience using precision measurement equipment.
• Understanding of torque specifications and pressure sealing principles.

Qualifications

• Additional technical or vocational assembly training is beneficial BUT NOT ESSENTIAL

Physical Requirements

• Good hand-eye coordination and ability to perform detailed, repetitive tasks.
• Ability to work seated or standing for extended periods.
• Comfortable handling small components.
• Use of PPE as required (gloves, safety glasses, lab coats, etc.).

Working Conditions

• Workshop or assembly environment; may include controlled humidity/clean areas.
• Interaction with chemicals in a safe, controlled process (full training provided).
• Occasional overtime or shift work depending on production demand.
• 40 hrs week with lunchtime finish on a Friday

Financial & Reward

• Competitive salary aligned to market and industry standards
• Company pension scheme with employer contributions
• Life assurance cover

Time Off & Leave

• 25 days annual leave plus bank holidays
• Enhanced sick pay
• Enhanced parental leave (maternity, paternity, adoption)

Health & Wellbeing ( some are post 3 month probation)

• Private medical insurance (PMI)
• Employee Assistance Programme (EAP) - confidential support for mental health, financial advice, and wellbeing
• Occupational health support
• Eye care vouchers and health & safety PPE provided

Professional Development

• Training and development programmes
• Support for professional qualifications and role-related certifications

Additional

• Cycle to Work scheme
• Electric Vehicle (EV) salary sacrifice scheme ( currently trialling)
• Free on-site parking

At Invinity, we are actively focused on increasing the representation of women across all levels of our organisation, particularly within our engineering, manufacturing and technical teams. We believe that diverse perspectives drive better innovation, and we are committed to providing a working environment where women can thrive, lead, and progress their careers in STEM.

We support this through inclusive hiring practices, equal pay for equal work, flexible working options, leadership development and continuous review of our policies to ensure they meet the needs of all genders and life stages.

Our culture is one of respect, inclusion, and empowerment - where every individual can contribute fully and confidently to a sustainable energy future.