Assistant Pre-Construction Manager

Assistant Pre-Construction Manager

Department: Building Fabric - Pre-construction

Employment Type: Full Time

Location: London

Harmony is on a mission to be the best life safety partner to work with and for. Rated an ‘Outstanding Employer’ by Best Companies in 2025, we are only getting bigger and stronger — and we’re looking for A-players to help us get there.

We are passionate about making a difference and obsessed with quality. Our goal is to build a world where every resident can sleep safely at night, knowing their home is 100% safe.

Our Building Fabric Pre-Construction team in London is growing fast, and we are looking for an Assistant Pre-Construction Manager to support the delivery of high-quality bid submissions, project pricing, and pre-construction activity across our London portfolio. Reporting to the Pre Construction Manager, you will play a key role in turning enquiries into winning proposals across fire doors, fire stopping, compartmentation, and wider building fabric works.

This is a hands‑on commercial role at the heart of a fast‑moving pre‑construction operation. If you are numerate, organised, and want to build a career in pre‑construction at one of London’s fastest‑growing fire safety specialists — read on.

• Support the Pre-Construction Manager in the preparation of tenders, quotations, and pricing submissions for building fabric and passive fire protection works across the London portfolio.
• Carry out take-offs and material quantification from drawings, specifications, and survey information, ensuring accuracy at every stage.
• Assist in the preparation of method statements, programmes, and supporting documentation for tender submissions.
• Liaise with supply chain, subcontractors, and internal teams to gather pricing and technical information required to complete bids.
• Maintain and update the pre‑construction tracker, ensuring all live enquiries, deadlines, and submission statuses are accurately recorded.
• Support site surveys and pre‑construction visits, building your understanding of scope and specification requirements on the ground.
• Assist with the handover of won projects to the delivery team, ensuring all pre construction information is transferred accurately.
• Develop your knowledge of passive fire protection systems, fire doors, fire stopping, and the compliance framework that underpins our work.
• Contribute to continuous improvement of the pre‑construction process — including templates, pricing tools, and submission quality.

• An A-player mindset — high standards, extreme ownership and the drive to do things properly, the first time.
• Experience in a pre‑construction, estimating, quantity surveying, or commercial support role within building fabric, passive fire, construction, or a closely related discipline.
• Ability to carry out accurate take-offs and quantification from drawings and specifications.
• Strong numerical and analytical skills — comfortable working with pricing data, cost summaries, and tender documents.
• Highly organised with strong attention to detail — able to manage multiple live bids simultaneously and meet submission deadlines without dropping the ball.
• Good communication skills — able to liaise professionally with clients, supply chain, and internal colleagues.
• Proficient in Microsoft 365 — particularly Excel, Outlook, and Word.
• London office-based and available full time.
• Full UK driving licence.

This is a chance to build a pre‑construction career at one of the UK’s fastest‑growing fire safety specialists — working on a high‑volume London pipeline across fire doors, fire stopping, and passive fire works, supported by an experienced Pre‑Construction Manager, and developing the commercial and technical skills that will take your career forward. At Harmony, we ask a lot — and we give a lot back.

The hours are real, the standards are high and the work is demanding, but for those who show up, deliver and go the extra mile, the rewards follow. A-players here enjoy a competitive salary, a Personal Development Plan with ongoing training and mentoring, unlimited holiday, a bonus scheme paying up to 50% of annual…