Interaction is a workplace design and build company creating beautiful, sustainable workspaces across the UK. Since 1992, we’ve helped organisations create offices where people really want to work.
We design and deliver CAT A, CAT A+ and CAT B office fit-outs, sustainable retrofits and tenant-ready workspaces for ambitious organisations and commercial property owners.
Our mission is simple: everybody deserves a space where they can thrive.
What really makes Interaction different is our culture. Yes, we know every company says that (and no, we still haven’t found a less clichéd way to say it) but we genuinely believe it’s true.
We’re a close-knit, collaborative team who care deeply about the work we deliver and the people we work with. As we continue to grow, maintaining that culture, while strengthening the way our projects are led, is incredibly important to us.
That’s where this role comes in.
We’re looking for an experienced Project Manager to lead the operational delivery of CAT A and CAT B workplace design-and-build projects, typically valued from circa £1m to £10m, from pre-construction and mobilisation through to Practical Completion, handover and defects close-out.
You’ll be the day-to-day project lead: bringing together the client, design team, site team, consultants and supply chain; owning the programme; coordinating technical & design information; and making sure every project is delivered safely, beautifully and with no avoidable surprises.
Commercial responsibility on projects of £1m and above sits with our Commercial team, so this is not a QS role in disguise. You will, however, identify change early, protect the records needed for recovery and understand the commercial impact of delivery decisions. From time to time, you may also be asked to manage the full commercial cycle of a specifically allocated, less complex project below £1m, within agreed authority and Commercial Team oversight.
- Lead allocated CAT A and CAT B projects from pre-construction and mobilisation through construction, commissioning, handover and defects close-out.
- Validate buildability, methodology, logistics, resources and programme before commitment, then own the detailed master programme, critical path and recovery plans.
- Act as the main day-to-day contact for clients, consultants, landlords, building management and the supply chain, providing clear updates and decisive leadership.
- Coordinate drawings, specifications, RFIs, samples, submittals and approvals so the site always has current, buildable information.
- Competently challenge and coordinate CAT A and CAT B MEP, fire-safety and technical packages through design, installation, testing, commissioning and certification.
- Manage Building Regulations and statutory-delivery interfaces, including enhanced information, approval, change-control and dutyholder requirements on projects within higher-risk buildings.
- Lead the site manager & internal project team and manage subcontractor mobilisation, sequencing, performance, quality, safety and conduct.
- Maintain a visible site presence, resolve operational constraints early and drive defect prevention rather than relying on end-stage correction.
- Keep accurate operational reports, risk and decision registers, progress evidence and site records.
- Identify instructions, change, delay and disruption immediately, then provide Commercial with the evidence needed for valuation, notices and recovery.
- Procure delegated minor or site packages within approved scope, budget, terms and authority; work with Commercial on major and specialist packages.
- Plan and coordinate commissioning, O&Ms, warranties, statutory approvals, Practical Completion, client training, handover and Client Care transition.
- Use AI tools effectively and responsibly to improve planning, information understanding, risk management, reporting and communication, while checking accuracy and protecting confidential information.
- On an allocated less complex project below £1m, manage budget, procurement, applications, variations, supplier accounts, forecasting, cash and final account within documented authority and Commercial oversight.
- Visible, accountable and calm under pressure... you create clarity and keep people moving.
- Organised and disciplined, with the detail and follow-through needed to avoid late surprises.
- Client-focused and personable, but confident challenging assumptions and escalating risk.
- Technically curious: you want to understand how design, MEP, fire and specialist systems fit together.
- Commercially aware and respectful of clear decision rights between Delivery and Commercial.
- Practical, positive and solutions focused, balancing pace with safety, quality and compliance.
- Collaborative and generous with information, feedback and support for less-experienced colleagues.
- Strong project management experience within UK CAT A and CAT B commercial fit-out, refurbishment or design and build, including projects of circa £1m–£10m.
- Proven experience of programme management, mobilisation, logistics, design coordination, supply-chain leadership, quality control and handover.
- Competent practical understanding of CAT A and CAT B MEP, fire-safety and technical packages, including coordination, sequencing, commissioning and compliance.
- Sound knowledge of Building Regulations affecting fit-out and refurbishment, including relevant HRB controls and dutyholder interfaces.
- Working knowledge of delivering & administering projects under the JCT 2024 Design and Build Contract, with the ability to recognise obligations, change, delay, notice and record requirements and involve Commercial at the right time.
- Enough commercial capability to manage a selected less complex project below £1m, including budget control, procurement, applications, variations, supplier accounts, forecasting and final account.
- Confident client communication, stakeholder management, meeting chairing and written reporting skills.
- Good working knowledge of Excel, programming and project-management software and common data environments such as ACC.
- Current role-appropriate health-and-safety competence and site qualifications.
- Confident, responsible use of AI tools, with appropriate human checking and confidentiality controls.
A degree, HNC/HND, NVQ or equivalent construction qualification; CIOB membership; SMSTS, CSCS and First Aid; and experience in occupied or higher-risk buildings would all be advantageous.
You’ll be joining a growing company with a strong reputation in the commercial property sector and a genuinely supportive culture.
You’ll have the opportunity to:
- Lead distinctive, fast-moving workplace projects and see your decisions translated into real spaces.
- Work closely with senior leadership and talented colleagues across Sales, Design, Commercial and Delivery.
- Help shape clearer project controls, technical coordination and delivery standards as the business grows.
- Build broader commercial capability through carefully selected sub-£1m projects, without losing your core focus on delivery leadership.
- Develop and mentor junior colleagues while continuing to grow your own project management career.
- Work in a creative, collaborative environment where great delivery and a brilliant client experience matter equally.
Most importantly, you’ll help ensure Interaction continues to be a brilliant place to work—and a brilliant company to work with.
We’re looking for someone who combines energy and strong people skills with disciplined project control and genuine technical curiosity.
You’re likely to be someone who:
- Enjoys being close to the client, the team and the site, and takes visible ownership when decisions are needed.
- Can turn a complex set of drawings, dependencies and stakeholder needs into a clear, credible plan.
- Spots risk early, records it properly and follows it through to closure.
- Is comfortable getting into the detail of MEP, fire strategy, compliance and commissioning rather than treating them as someone else’s problem.
- Builds trust quickly but remains willing to challenge the client, designer or supply chain when the project needs it.
- Understands that good commercial outcomes start with good operational decisions and reliable records.
- Can occasionally switch into full project-commercial ownership on a smaller, less complex scheme and knows when to ask for support.
- Takes pride in an organised handover, minimal defects and a client who wants to work with us again.
- You prefer to manage projects mainly from a desk and do not want regular, visible involvement on site (across the UK).
- You see programme, design coordination, safety, quality or handover as responsibilities that sit entirely with somebody else.
- You are uncomfortable challenging technical information or coordinating MEP, fire-safety and specialist packages.
- You tend to raise change or risk after the event rather than protecting records and escalating it early.
- You want either a pure quantity-surveying role or a role with no commercial responsibility at all; the core role is Delivery, but selected sub-£1m projects may require both.
- You prefer working in silos rather than sharing accountability across Sales, Design, Commercial and Delivery.
- You are looking for a remote or remote-leaning hybrid role. We’re “Face First”: if something can be done better in person, we believe it should be done face to face.
This is a role for someone who loves making complex projects feel controlled: aligning people and information, solving problems early and staying close to the detail without losing sight of the client experience.
You don’t need to arrive knowing everything about Interaction. You do need strong fit-out delivery fundamentals, sound judgement, technical curiosity and the confidence to lead openly and collaboratively.
If you enjoy turning an ambitious workplace design into a safe, coordinated and beautifully finished project, we’d love to hear from you.
Salary Range: £55k - £80k OTE subject to experience & seniority.
Availability: Immediate
Interview Process:
Initial 15min introduction call
60min in person excel/maths assessment
60min in person formal interview with Contracts Director
Interaction nurtures diversity through inclusive practices. We will consider all qualified applications for this position, regardless of their age, race, religion, gender identity, sexual orientation, disabilities or other characteristics.
