Sinewave was founded in 2015 with a clear mission from the very start - everything that we do will always be a power for good. Since then, we have gone from a living room start-up to a leading force within the energy transformation sector. Not bad, eh!
We are on a mission to help power the future more sustainably. But don't just take our word for it, we are the only B-Corp Certified ICP in the world.
We’re part of powering the UK’s energy transition with innovative high and low voltage electrical solutions up to 400kV. From EV charging to renewables and commercial projects, we design, deliver, and maintain networks with sustainability and efficiency at heart. Join us to drive change and make an impact!
This role:
We are looking for a Commissioning Engineer to come and join our growing Engineering team.
This will be someone who challenges what we do daily and thrives working in a fast-paced environment with tight deadlines helping us build for the future.
An idea of what you'll be doing:
- Deliver commissioning of LV up to 132kV electrical systems across ICP projects, including Solar and BESS installations.
- Configure, test and fault-find protection and control systems, including overcurrent, earth fault, line differential, sensitive earth fault, G99 and G100 schemes.
- Plan and support energisation activities, including switching plans, safety documentation and coordination with authorised persons.
- Develop, review and maintain commissioning plans, procedures, inspection and test plans, test sheets and risk controls.
- Interface with DNOs and IDNOs to demonstrate network compliance and secure acceptance of protection and commissioning arrangements.
- Lead the design to commissioning handover and provide technical input to design reviews, constructability reviews and project planning.
- Participate in site inspections, factory and site acceptance testing, witness testing and client or network-operator hold points.
- Commission and test transformers and switchgear up to 132kV, associated protection systems, SCADA interfaces and network communications.
- Undertake or coordinate cable testing, including VLF, oversheath and DC pressure testing where applicable.
- Diagnose and resolve technical issues during commissioning and early operational phases, escalating material risks promptly.
- Produce accurate commissioning reports, test records, as-built information, defect schedules and handover documentation.
- Support operations and maintenance contracts through planned maintenance, fault response and technical investigation.
- Ensure work complies with relevant legislation, industry standards, client specifications, Distribution Safety Rules and Sinewave procedures.
- Promote safe systems of work and stop work where conditions, controls or authorisations are inadequate.
When you join you will go through our top-notch induction and onboarding process and have opportunities to develop further through our in-house training academy.
Everyone belongs here at Sinewave
At Sinewave, we are proud to be an equal opportunities employer, dedicated to creating a diverse and inclusive workplace where everyone feels valued and empowered to contribute. We know what it takes to change the world and that’s why we review all applications impartially, ensuring decisions are based solely on merit, skills, and potential. If you require any adjustments to support you through the application or interview process, please let us know - we’re here to help.
#TeamSinewave
You’ll have a proven track record of:
- Strong technical knowledge of HV plant, protection, control and commissioning practices up to 132kV.
- Systematic fault-finding and problem-solving skills, with sound technical judgement under site constraints.
- Clear written and verbal communication with clients, project teams, DNOs, IDNOs, contractors and operational stakeholders.
- Ability to plan and prioritise complex commissioning activities while maintaining accurate records and programme visibility.
- Confident use of commissioning test equipment and supporting software.
- Strong safety leadership and the confidence to challenge unsafe or non-compliant activity.
- High attention to detail and a disciplined approach to configuration control, evidence and handover documentation.
- Ability to work independently at project sites and collaborate effectively across design, construction and operations teams.
You’ll be a successful Commissioning Engineer at Sinewave if you have…
- Proven experience commissioning HV electrical systems and protection schemes, ideally across distribution, ICP, Solar or BESS projects.
- Essential experience with protection systems including overcurrent, earth fault, line differential, sensitive earth fault, G99 and G100 requirements.
- Proficiency in the safe use of commissioning and electrical test equipment.
- Knowledge of grid connection standards, network compliance and DNO or IDNO approval processes.
- Valid UK driving licence (max 3 points)
- Right to work in the UK.
- HV Authorisation as SAP or AP, or demonstrable progress towards authorisation, is desirable.
- SMSTS or SSSTS is desirable.
- 18th Edition Wiring Regulations, City & Guilds 2382, would be an advantage.
- City & Guilds 2391-52 Inspection and Testing would be an advantage.
- Strong IT skills for technical reporting, document control and commissioning records.
- Comply with all company policies, procedures, and business ethics codes, including the anti-bribery policy, while adhering to the Environmental and Quality Management System in alignment with ISO standards and the requirements of the NERS accreditation.
So, let’s talk about what’s in it for you.
In return for everything you can bring, we can offer you an exciting place to work with a welcoming and friendly workforce. We are a fast-growing, dynamic business and even as our team grows in number, maintaining our company culture is important to us. We want to keep the feeling of being part of a small business alive, no matter how big we get.
Whether you’re based in the HQ in Swindon, field-based, or working from home we have a lot to offer:
The usual stuff
Along with a competitive salary and life assurance, we provide enhanced pension contributions matching 5% as standard.
25days + Bank Holidays
You can even buy or sell holiday allowance, giving you the flexibility to enjoy more time with family and friends.
Private Medical
We hope you’ll never need it, but just in case. We offer a fully comprehensive medical scheme that can extend to your family as well.
Sinewave Academy
Our academy provides you with all the tools and training needed to power your career.
Sinewave Worx
Our bespoke perks platform getting you discounts and cashback at loads of high-street retailers. Our perks list is as impressive as the range of our EV solutions! Want to know more? Charge ahead and check out here.
Any offer of employment will be subject to satisfactory pre-employment checks, including verification of your right to work in the UK. A basic DBS check will also be required, with details confirmed during the recruitment process.
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Commissioning Engineer in Swindon employer: Sinewave
Sinewave is an exceptional employer, offering a vibrant and inclusive work culture that prioritises employee growth and development. With a commitment to sustainability and innovation in the energy sector, employees benefit from comprehensive training through the Sinewave Academy, competitive salaries, and flexible holiday options, all while being part of a dynamic team dedicated to making a positive impact on the future of energy. Located in Swindon, our headquarters fosters a sense of community, ensuring that every team member feels valued and empowered to contribute to our mission.
