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Job Title:  Senior Cell Engineer

Requisition ID:  9931

Abingdon, ENG, GB, OX14 3ED

Home-based Position:  No
Regular/Temporary:  Regular
Job Type:  Full-Time
Job Description: 

EnerSys is the global leader in stored energy solutions for industrial applications. We have over thirty manufacturing and assembly plants worldwide servicing over 10,000 customers in more than 100 countries. Worldwide headquarters are located in Reading, PA, USA with regional headquarters in Europe and Asia. We complement our extensive line of Motive Power and Energy Systems with a full range of integrated services and systems. With sales and service locations throughout the world, and over 100 years of battery experience, EnerSys is the power/full solution for stored DC power products. 

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Job Purpose

The Senior Li-ion Engineer role is within the Engineering department at Culham. They will work in a team of engineers and technicians that carry out Li-ion cell evaluation, batch acceptance testing, and preparation of Li-ion cells for space projects.

The Senior Li-ion Engineer will be responsible for a small team of engineers who work with colleagues from other disciplines to produce documentation and hardware for internal testing programmes, and supply data, e.g. for battery sizing and hazard analysis, to customer projects.

The role acts as an expert in the area of Li-ion cell performance both for internal projects and external customers/space agencies.

The candidate will have a STEM background, and experience working with Li-ion batteries.

Essential Duties and Responsibilities

  • Accountable for the technical work within internal cell engineering projects through:

o Identification and assessment of Li-ion cell technologies against performance requirements

o Definition, specification and delivery of cell testing programs to meet space industry standards, including:

  • Test plans and procedures
  • Test data review
  • Reporting to business and customers/agencies
  • Verification and sign-off of cell batches as flight suitable through acceptance testing, including comparison of batch performance against other batch data
  • Technical input and review of non-conformances

o Supporting cell ordering to meet future demand

o Ensuring preparation of cells for production, including:

  •  Electrical screening data analysis and reporting
  •  Inspection data analysis
  • Support the cell availability databases for project use
  • Technical input and review of non-conformances

o Review of documentation written by more junior engineers

  • Responsible for supplying data for product design:

o Definition of cell operating envelopes (thermal, mechanical, electrical)

o To enable and enhance in-house sizing, e.g. life time degradation

o Safety data to enable the completion of hazard analyses

  • Disseminating Li-ion cell information to external customers/space agencies through meetings and/or conferences
  • Providing training in Li-ion cell performance
  • Responsible for technical inputs to improvement projects within the team
  • Managing direct reports, including:

o Timesheets/absence monitoring/annual leave etc

o Setting of goals/objectives and performing appraisals

o Training and career development plans

o Allocation of tasks

  • Planning/Delivery

o Supports cell engineering hours in projects/bids

o Supports Cell Engineering Team Leader in work package definition


  • A degree in STEM subject.



  • Test and data analysis of Li-ion cells in at least one of the following areas:
    • Performance
    • Life testing
    • Safety testing
  • Presenting technical information
  • Reviewing and constructively criticising analytical results, technical reports and documents
  • High level of IT skills for data analysis, modelling, results presentation and reporting


  • Experience of sizing batteries to customer requirements
  • Mentoring / training more junior engineers


EnerSys provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.  EEO/Minority/Female/Vets/Disabled

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