Lead Piping Designer

Lead Piping Designer  – Addison Project, Harlow

For over 25 years, Addison Project plc has delivered innovative, sustainable engineering solutions across the chemical, pharmaceutical, energy, and food & beverage sectors. As a family‑owned business with UK‑wide coverage, we combine technical excellence with a collaborative, client‑focused approach. Our fully integrated EPCM capability supported by strong CDM and HSSEQ leadership and accredited management systems ensures projects are delivered safely, efficiently, and to the highest standards from concept through to commissioning and start‑up.

If you’re passionate about engineering and want to join a dynamic, people‑focused consultancy driving progress and sustainability across the UK’s manufacturing and process industries, Addison Project is the place to grow your career.

Job Type: Contract Outside IR35

Start: Spring
2026

Location: Harlow, Essex with travel to site in Home Countries

Addison Project Plc are seeking applications from PSC Contractors who are Lead Piping Designers to support an upgrade industrial project in Greater London. This opportunity will be based in our Harlow office and requires both office and site presence to ensure the smooth running of the project and client satisfaction.

Piping design management of the full design process from concept through to construction, including pipe support design, scopes of work, relaying information to the piping design team, checking of other designer’s work, and communication with sub contractors and vendors. The design of piping systems using Auto Cad Plant 3D is also required.

• You must be able to suitably demonstrate experience as either a Principal or Senior Piping Designer or Team Lead who has lead projects or preferably design teams for onshore UK projects in the process sector.
• Experience with in the process industry (chemical, petrochemical, food & beverage, oil & gas)
• As an excellent communicator, leader, and mentor you will be confident in liaising with external and internal customers
• You must have AutoCAD Plant 3D experience
• You must have up to date knowledge of relevant UK standards.
• You must have the ability to utilise laser scan point clouds
• You must have the ability to complete site surveys, and create reports and scopes of work
• You must be confident in writing scopes of work for piping installation
• You must have the ability to produce check and validate General Arrangement Drawings, Isometric and Pipe Support Drawings
• You must have experience of complying design and installation estimates
• Client facing experience where you have been the main discipline point of contact for new and existing scopes is essential

If you are an experienced Lead Piping Designer looking for a flexible, Outside IR35 opportunity and would like to be considered for this role, please submit your application today via

In accordance with current legislation, this position is only open to candidates who have indefinite eligibility to work in the UK. Unfortunately we are unable to offer sponsorship.