Job search
About
Our specialisms
E-Mobility
Renewable Energy
Energy Storage
Sustainability
Clean Fuels
Energy Management & Grid Resiliency
Nuclear Power
Energy Trading
Candidates
Clients
Team
Join Us
Newsroom
Contact
lhi logo

Part of the LHi Group family. Learn more

Featured

19 Jan 2026
19 Jan 2026
Celebrating 10 Years of Piper Maddox

A decade of purpose, growth and impact in clean energy talent This year marks ten years of Piper Maddox, one of LHi Group’s fastest growing specialist brands, built with a clear purpose, to support the global clean energy transition and help protect the future of our planet through exceptional talent solutions.Founded in 2015 by Alex Cohen under the LHi Group, Piper Maddox was created with a belief that recruitment could be more than a commercial service, it could be a platform for positive change. From the outset, the brand committed fully to renewable energy and cleantech, stepping away from fossil fuels entirely and aligning its growth with the industries actively decarbonising the world. Over the past decade, Piper Maddox has become a trusted partner to some of the world’s most innovative clean energy organisations across the US and Europe, helping them build the teams shaping how energy is generated, stored and consumed. Its rapid growth reflects not only market demand, but the strength of its mission, culture and people, proof that purpose-led businesses scale with impact. At its core, Piper Maddox is driven by the belief that recruitment can be a force for good, contributing to a cleaner, more sustainable future, one hire, one partnership and one business at a time. From Vision to Global Brand As the energy sector began shifting towards renewables, it became clear that traditional recruitment models were struggling to keep pace with the urgency of change. The clean energy transition demanded specialist knowledge, speed and long-term thinking, not legacy approaches. Recognising this opportunity, Alex Cohen and LHi Group Founder, Tom Glanfield aligned on a shared ambition to build a recruitment brand dedicated entirely to clean energy and sustainability. Combining entrepreneurial platform, leadership and a strong cultural foundation, Piper Maddox was born as a values-led business designed to create long-term impact. From those early beginnings, the brand has expanded rapidly across Europe and North America, building leadership teams united by a shared purpose to accelerate the energy transition and support companies working to decarbonise the planet. “The success of Piper Maddox reflects what’s possible when purpose, people and platform align. It’s been incredible to watch the brand grow into a true global leader in clean energy and cleantech recruitment.” ~ Alex Cohen, US Brand Leader Specialist Expertise at Scale Today, Piper Maddox is home to more than 80 specialist consultants delivering talent solutions across: Renewable Energy Energy Storage eMobility Clean Fuels Nuclear Power Energy Trading Sustainability Energy Management and Grid Resiliency Sustainable Aviation Operating with a specialist, quality-first mindset, the brand combines deep market expertise, proactive headhunting and extensive global networks to deliver consistently high-quality outcomes for clients operating in highly competitive markets. With offices in New York, Los Angeles, Austin, Miami, London, Bristol, Berlin and Munich, Piper Maddox provides global reach supported by strong local market expertise across North America and Europe, including the UK, DACH, Benelux and Southern Europe. Evolving into a Talent Solutions Partner In line with LHi Group’s wider evolution, Piper Maddox has grown beyond traditional recruitment into a full talent solutions partner, supporting clients at every stage of scale and maturity through: Permanent and contract recruitment Executive search Subscription hiring models Embedded talent solutions Consulting services through Expert Project Solutions (XPS) This integrated approach enables clients to scale efficiently while maintaining quality, consistency and long-term workforce planning. “Over the past decade, Piper Maddox has matured into a true strategic partner for our clients. The next phase is about continuing to innovate and scaling our impact globally.” ~ Tom Clarke, UK & Europe Brand Leader Looking Ahead: Building a Lasting Legacy As Piper Maddox celebrates its ten-year anniversary, the brand continues to play a critical role in supporting the organisations building a cleaner, more resilient energy future. As one of LHi Group’s fastest growing brands, its success reflects the power of aligning commercial performance with meaningful purpose. By supporting companies whose missions centre on decarbonisation, sustainability and innovation, Piper Maddox is helping shape the legacy LHi aims to leave, protecting the future, enabling progress and proving that business can be a force for positive change. Interested in partnering with Piper Maddox?👉 Discover how their talent solutions can support your organisation’s growth by emailing info@pipermaddox.com Thinking about joining the journey?👉 Explore current opportunities across the Piper Maddox brand and become part of a business making real-world impact. Click here!

main banner
Commissioning Engineer
£48k - 60k per year
Energy Storage
UK
London, Greater London, England
Permanent
On-site
Back to all jobs
Email to a colleague
Apply

Commissioning Engineer – Junior / Mid-Level / Senior / Manager

UK, London (Europe focused)

 

A leading global energy technology company is expanding its international Commissioning team and is looking to hire Commissioning professionals across Junior, Mid-Level, Senior and Manager levels.

 

The business is at the forefront of the global energy transition, delivering large-scale battery energy storage and energy technology solutions across international markets. As the organisation continues to grow, this is an opportunity to join a technically ambitious company working on some of the largest and most advanced energy projects globally.

 

Depending on your level of experience, you will support or lead the commissioning of large-scale Battery Energy Storage Systems (BESS) and associated energy technology.

 

The role is highly international and hands-on, working closely with engineering, project management, construction, quality and operations teams to ensure systems are installed, tested, commissioned and handed over safely and effectively.

 

Global travel is a core part of the position. Candidates must be genuinely comfortable and happy with significant international travel and working on project sites globally.

 

Junior Commissioning Engineer

Responsibilities

  • Support commissioning activities for BESS and associated energy systems.
  • Assist with pre-commissioning checks, inspections, testing and system validation.
  • Support fault finding and troubleshooting of technical issues.
  • Assist senior engineers with commissioning documentation and reports.
  • Work alongside engineering and site teams to ensure equipment is correctly installed and prepared for commissioning.
  • Follow commissioning procedures, HSE requirements and technical standards.
  • Develop technical knowledge across BESS, electrical systems, controls and associated technologies.
  • Support Site Acceptance Testing (SAT) and system handover activities.
  • Work alongside experienced commissioning engineers to develop practical technical expertise.
  • Travel internationally to support project commissioning activities.

 

Requirements

  • Engineering degree, HNC/HND or equivalent qualification.
  • Some exposure to electrical systems, commissioning, automation, controls or energy technology.
  • Internship, graduate or early-career engineering experience is welcomed.
  • Strong technical curiosity and willingness to learn.
  • Strong problem-solving skills.
  • Fluent Chinese – C1 level or above (NON-NEGOTIABLE).
  • Professional working proficiency in English.
  • Genuine willingness and ability to travel globally on a regular basis.

 

Mid-Level Commissioning Engineer

Responsibilities

  • Lead commissioning activities for assigned systems and project areas.
  • Carry out testing, configuration, troubleshooting and validation of BESS and associated electrical systems.
  • Identify and resolve technical issues during commissioning.
  • Coordinate with engineering, construction and project teams to ensure commissioning activities remain on schedule.
  • Review technical documentation, drawings, test procedures and commissioning plans.
  • Support FAT, SAT and site acceptance activities.
  • Produce commissioning reports and maintain accurate technical documentation.
  • Liaise with customers, contractors and suppliers during commissioning.
  • Support and mentor junior engineers.
  • Contribute to the development of commissioning procedures and best practice.
  • Travel extensively to project sites globally.

 

Requirements

  • Typically 2–5+ years' relevant engineering or commissioning experience.
  • Experience with electrical systems, commissioning, testing or industrial equipment.
  • Experience troubleshooting technical issues independently.
  • Experience working on complex engineering projects or at customer/project sites.
  • Fluent Chinese – C1 level or above (NON-NEGOTIABLE).
  • Professional working proficiency in English.
  • Must be genuinely happy with extensive global travel and spending significant time internationally on project sites.

 

Senior Commissioning Engineer

Responsibilities

  • Take technical ownership of commissioning activities across major BESS projects.
  • Plan and execute commissioning strategies, testing procedures and site acceptance activities.
  • Lead troubleshooting and root-cause analysis of complex electrical, control and system-level issues.
  • Coordinate commissioning activities across multiple engineering disciplines.
  • Work closely with project management, engineering, construction and customers to ensure successful project delivery.
  • Review and approve commissioning documentation, test plans and procedures.
  • Lead FAT, SAT, energisation, testing and final system handover activities.
  • Provide technical guidance and mentorship to junior and mid-level engineers.
  • Manage commissioning risks, technical issues and project priorities.
  • Represent the commissioning function in meetings with customers, contractors and other stakeholders.
  • Contribute to continuous improvement of commissioning processes and standards.
  • Take a leading role in international project deployments and commissioning activities.

Requirements

  • Typically 5–8+ years' relevant experience in commissioning or a closely related technical discipline.
  • Strong experience leading commissioning activities and troubleshooting complex systems.
  • Experience within BESS, renewable energy, power electronics, industrial automation or a similar environment is highly desirable.
  • Demonstrable ability to lead technical activities and mentor less experienced engineers.
  • Strong communication and stakeholder management skills.
  • Fluent Chinese – C1 level or above (NON-NEGOTIABLE).
  • Professional working proficiency in English.
  • High mobility and a genuine willingness to travel globally extensively.

 

Commissioning Manager

Responsibilities

  • Take overall responsibility for commissioning activities across projects or a portfolio of projects.
  • Develop commissioning strategies, plans, schedules and resource requirements.
  • Lead and manage commissioning engineers and site teams.
  • Coordinate commissioning activities with project management, engineering, construction, quality and operations.
  • Manage commissioning budgets, timelines, resources and technical risks.
  • Act as the senior technical point of contact for customers, EPC partners, contractors and other stakeholders.
  • Oversee FAT, SAT, energisation, testing and final handover activities.
  • Ensure commissioning is completed safely, efficiently and in accordance with project requirements.
  • Resolve complex technical and commercial issues affecting commissioning delivery.
  • Establish and improve commissioning procedures, standards and best practices.
  • Provide technical leadership, coaching and development to the wider commissioning team.
  • Support the wider business with commissioning strategy and project planning.
  • Lead the international deployment of commissioning teams across global projects.

 

Requirements

  • Typically 8+ years' relevant experience, with significant commissioning and project leadership experience.
  • Proven experience managing commissioning teams and complex technical projects.
  • Strong understanding of electrical systems, controls, BESS or related energy technologies.
  • Experience managing customers, EPCs, contractors and multidisciplinary project teams.
  • Strong leadership, planning and problem-solving skills.
  • Fluent Chinese – C1 level or above (NON-NEGOTIABLE).
  • Professional working proficiency in English.
  • Must be highly mobile and genuinely happy to travel globally on a regular and potentially extensive basis.

 

Non-Negotiable Requirements – All Levels

Regardless of seniority, candidates must meet the following requirements:

  1. Chinese language proficiency – C1 level or above.
  2. Fluent English.
  3. Genuine willingness and ability to travel globally.
  4. Comfortable working for extended periods on international project sites.
  5. Comfortable working in a highly international, fast-paced environment.
  6. Strong technical and problem-solving capabilities.
  7. Willingness to work flexibly around project requirements and commissioning schedules.

 

This is an opportunity to join a global energy technology business at the forefront of the rapidly growing battery energy storage market.

 

You will work on major international projects, gain exposure to cutting-edge energy technology and collaborate with engineering and project teams across multiple countries.

 

For junior engineers, the role provides an excellent platform to develop into a specialist within BESS commissioning.

 

For experienced engineers and managers, it offers the opportunity to take ownership of major international projects, lead technical teams and play a significant role in the company's continued global expansion.

 

If you're interested, please apply below:

Apply
Other roles you might be interested in:
Senior Process Engineer
Colorado, United States

Senior Process EngineerLocation: Sisters, OR or Golden, CO Salary: $120,000–$145,000 base + bonus Relocation assistance availableAbout the RoleWe are seeking a Senior Process Engineer to lead process design, improve facility performance, and support projects from initial engineering through commissioning. This role will focus on developing practical engineering solutions, troubleshooting operational challenges, and establishing best practices to improve system reliability and design quality.The successful candidate will have the opportunity to transition into a Lead Engineer role within approximately one year, taking on greater technical leadership and team oversight responsibilities.Key Responsibilities- Develop, review, and modify process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), and other engineering deliverables.- Support EPC projects and facility upgrades from design through commissioning.- Perform material and energy balances, hydraulic calculations, and equipment sizing.- Troubleshoot process issues and validate engineering designs in industrial facilities.- Establish process control requirements and collaborate with automation and programming teams.- Identify opportunities to optimize processes, improve efficiency, and strengthen engineering standards.- Mentor junior engineers and support the development of the wider engineering team.Requirements- Bachelor's degree in Engineering or a related technical discipline.- Strong process engineering experience across industrial projects and facility operations.- Hands-on experience with process design, equipment sizing, field engineering, and commissioning.- Proficiency with ProMax, Aspen Plus, Aspen HYSYS, or comparable process simulation software.- Knowledge of applicable ASME and API codes and standards.- Strong technical problem-solving skills and the ability to work independently.Experience in RNG, natural gas processing, oil and gas, chemical processing, wastewater, petrochemicals, or other heavy industrial environments is highly desirable. Ideally, candidates will have 8–10+ years of experience and previous exposure to mentoring or technical leadership.Additional Details- Four days in the office, with one flexible day.- Approximately 20% travel during commissioning.- Quarterly travel to Sisters required for candidates based in Golden, CO.- Benefits include health, dental, vision, 401(k), and unlimited PTO, generally targeting 4–6 weeks annually.

Aerothermal Engineer
Bristol, England, United Kingdom

Location: South West or Midlands | Hybrid – three days per week on siteRate: Competitive hourly rates | Inside IR35 | Umbrella payrollHours: 37 per weekDuration: 12 months, with extensions highly likelyPiper Maddox is supporting a major aerospace engineering business with the appointment of a number of Aerothermal Engineers for a next-generation power and propulsion programme.These positions offer the opportunity to contribute to complex development work, from component-level analysis and concept evaluation through to wider powerplant integration. We’re interested in engineers with expertise across gas-path aerodynamics, turbomachinery, cooling, combustion, and inlet or exhaust flows. Individual responsibilities will depend on your specialism.The roleYou will use analysis and test evidence to understand performance, assess design options and support engineering decisions.Responsibilities will include:Defining aerodynamic, thermodynamic and combustion modelling requirements at system, subsystem and component level.Developing and evaluating concepts to support design trade-offs and concept selection.Performing CFD and other technical analysis, selecting methods and levels of detail appropriate to the development stage and problem.Supporting verification and validation, including test specification, model calibration against measured data and uncertainty assessment.Working with adjacent engineering disciplines to integrate and optimise aerothermal designs, accounting for component interactions and manufacturing constraints.Your backgroundWe’re looking for engineers who combine a strong understanding of fluid mechanics and thermodynamics with practical modelling and analysis experience. You should be comfortable explaining your assumptions, assessing the limitations of a model and translating results into clear recommendations.Relevant experience may include:Aerothermal development within aero engines, gas turbines or closely related applications.CFD, heat transfer, cooling, combustion or turbomachinery analysis.Test-data interpretation and validation of numerical models.Working across design, manufacturing and other engineering disciplines.Awareness of product integrity and relevant certification frameworks.You do not need expertise across every area listed; we are looking to build a team with complementary capabilities.Contract arrangementsThe roles are inside IR35, with payroll through an Umbrella company and weekly timesheets. A BPSS check is required before onboarding, and eligibility for SC clearance is essential.To discuss the opportunities, contact Charles Orr at Piper Maddox or apply with your CV, availability, preferred location and hourly rate expectations.

Electrical Engineer
San Francisco, CA, United States

Piper Maddox have recently partnered with an exciting start-up with one mission – reducing the number of gas-powered vehicles and increasing the adoption of Electric Vehicles (EV) in the United States. Currently, we are looking for an Electrical Engineer to join the team. This person will be responsible for designing, developing and validating all electrical systems. In this position, you will be tasked with a number of things including: • Integrate new electrical systems across multiple departments and support their implementation into production.• Develop and design electrical systems using ECAD software, including the creation and prototyping of electrical harnesses.• Install electrical components and systems on prototype vehicles while maintaining thorough and accurate documentation.• Perform vehicle and bench-level electrical testing, record results, and manage system documentation through PLM platforms.• Coordinate with electrical vendors and contractors while operating equipment safely, maintaining an organized workspace, and adhering to all applicable safety procedures.The ideal candidate will have a background similar to the below:• Bachelor’s degree in Electrical Engineering with 2–6 years of relevant professional experience.• Background in automotive, aerospace, or EV power electronics, with a strong understanding of electrical engineering principles applied to vehicle systems.• Hands-on experience designing and prototyping both 12V and high-voltage power distribution systems.• Familiarity with CAN hardware and software protocols, along with the ability to safely operate basic shop equipment.If this sounds like the kind of position you would like to be considered for, please follow the links and apply!

Search all jobs

Can't find the right role?

Let's talk!

We're in constant communication with our clients and although they might not be hiring they're always open to hearing about new and exciting candidates. So, get in touch and let us get your name out there.

Contact us
circle 1
circle 2