Senior Authorised Person

Last Mile Infrastructure Limited; Oxford; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Holiday entitlement

Pension contribution

Salary sacrifice

Cycle to work

Life assurance

Employee discounts

Refer a friend

Private medical insurance

Sick pay

Job summary

Last Mile is seeking a Senior Authorised Person (Operations Engineer) to lead and mentor a technical team across field sites, ensuring safe, compliant construction and energisation of 11kV and LV networks.

You will coordinate with DNOs, perform testing, and support Self-Connect activities while traveling to sites around London and beyond. A strong safety background and DNO authorisation are essential for success.

Qualifications

• HNC or equivalent qualification with knowledge of 1ph and 3ph systems at LV/HV.
• Current or previous DNO/iDNO 11kV AP/SAP Authorisation.
• A recognised supervisory Health & Safety qualification (e.g. SSSTS or IOSH).

Responsibilities

• Supervise and mentor staff to support development and enhance company performance.
• Conduct competency assessments as an Assessing Officer to ensure compliance with authorisation standards.
• Perform pre-commissioning and testing of 11kV & LV switchgear, including IR, continuity, and pressure testing.
• Liaise with DNO engineers for final connections, energisation of substations, and IDNO/DNO LV networks.
• Plan and execute DNO LV & HV Self-Connect activities and support fault location/repair.
• Install and test CT Metering wiring in line with COP3/COP5 & P283.

Skills

Supervision

Mentoring

Competency assessments

Electrical testing

Education

HNC or equivalent

SSSTS or IOSH

Tools

11kV switchgear

CT Metering wiring

Job description

Senior Authorised Person (Operations Engineer)

Step into a leading utilities company that champions innovation and service excellence. At Last Mile, we take pride in delivering top-quality solutions across the multi-utility sector. Our dedicated Technical and Operations team is expanding, and we're excited to welcome a talented Senior Authorised Person (Operations Engineer) to join us.

As a Senior Authorised Person (Operations Engineer), you will use your technical expertise, initiative, and problem‑solving skills to support Craftsmen and Project Managers with the construction, auditing, and energisation of electricity networks. Your role will be key in ensuring projects are delivered efficiently, safely, and to the highest standards.

The position requires travel to various sites, with occasional overnight stays, so flexibility is essential. We're actively looking for someone who is based in and around London.

What’s in it for you as a Senior Authorised Person (Operations Engineer)?

• 25 days holiday, increasing after 2 years by 1 day each year up to 30 days, plus 9 public holidays
• Holiday buy scheme
• EV and ULEV salary sacrifice scheme (subject to minimum length of service)
• Cycle to work salary sacrifice scheme
• Up to 7% employer pension contribution
• Volunteering Day
• Life assurance (x4 annual basic salary)
• Retail, travel and leisure discounts via our MilesMore benefits platform
• Refer a friend incentive
• stream – Financial wellbeing platform
• Employee assistance programme
• Private medical insurance*
• Company sick pay**
• Some of our benefits are only applicable when you have successfully completed your probation period

Your responsibilities as a Senior Authorised Person (Operations Engineer):

• Supervise and mentor staff to support development and enhance company performance.
• Conduct competency assessments as an Assessing Officer to ensure compliance with company authorisation standards.
• Perform pre-commissioning and testing of 11kV & LV switchgear, including IR, continuity, and pressure testing.
• Liaise with DNO engineers for final connections, energisation of substations, and IDNO/DNO LV networks.
• Plan and execute DNO LV & HV ‘Self-Connect’ activities and support fault location/repair.
• Install and test CT Metering wiring in line with industry standards (COP3/COP5 & P283).

Experience / Knowledge:

• Previous experience in the utility sector in a similar Operational Role
• Possess a sound knowledge of HV and LV distribution networks and the apparatus and cables used in construction.

Qualifications:

• HNC, or equivalent, level of qualification, with a good theoretical and working knowledge of 1ph and 3ph electrical systems at both LV and HV.
• Current or previous DNO/iDNO 11kV AP/SAP Operational Authorisation
• A recognised supervisory Health & Safety qualification (e.g SSSTS or IOSH)

Have you got the drive to go to the Last Mile as a Senior Authorised Person (Operations Engineer)?

About us:

Last Mile is one of the largest last-mile multi-utility businesses in the UK. We understand construction and we know utilities. We design, build, own, and manage the ‘last mile’ of essential utilities infrastructure.

With a proven history of delivering multi-utility connections across Great Britain, we provide a full suite of utility infrastructure, including clean heat networks, electricity, gas, water, wastewater and fibre.

With a strong track record, deep industry knowledge and solid investor backing, we take a forward-thinking approach to the complex economic, social and environmental challenges of today, to innovate for a better tomorrow.

Through Last Mile and our asset adoption business Last Mile Asset Management, we provide a ‘one-stop shop’ for new utility connections.

We’re proud to be both a Great Place to Work® certified business and a Living Wage Employer, reflecting our commitment to supporting and valuing our people.

For further enquiries, contact [e-mail] or visit our website at www.lastmile.co.uk

At Last Mile, we are proud to be an equal opportunities employer. We consider all applications solely on the basis of skills and experience and actively encourage candidates from all backgrounds to apply.