Trinity Fire & Security Systems
Design and Estimating Manager
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Design and Estimating Manager
At Trinity Fire & Security, we’re more than just experts in safety and security — we’re a supportive team with a shared purpose: protecting what matters most to our customers.
Trinity Fire & Security Systems is seeking a skilled Design and Estimation Manager to join our dedicated Design & Estimating team, delivering high-quality solutions for nationally recognised organisations.
This role is a full-time, permanent position working 8:30 am to 5 pm, Monday to Friday, and can be based on a hybrid basis from either our Abingdon or Exeter offices.
What You’ll Be Doing
Team Leadership & Development
- Lead, mentor, and develop the Design & Estimating team, ensuring effective workload planning, performance management, capability development, and succession planning.
Operational Performance & Resource Management
- Manage departmental capacity, workload allocation, and priorities to ensure the delivery of accurate, timely, and commercially viable design and estimating outputs.
Technical & Commercial Governance
- Establish, maintain, and monitor standards, processes, and controls to ensure designs, estimates, and proposals are compliant, accurate, and commercially robust.
Bid & Tender Leadership
- Oversee the preparation and review of major bids and tenders, providing strategic direction and challenge to maximise quality, competitiveness, and win rates.
Cross-Functional Collaboration
- Work closely with Sales, Operations, Procurement, and Project Delivery teams to improve communication, remove barriers, and ensure successful project handover and execution.
Performance Monitoring & Reporting
- Develop and manage KPIs, forecasting, pipeline visibility, and management reporting to support informed decision-making and continuous improvement.
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Supply Chain & Commercial Management
- Build strategic supplier relationships and support procurement activities to improve commercial outcomes, consistency, and supply chain performance.
Continuous Improvement & Business Change
- Identify opportunities to improve systems, processes, automation, and ways of working, supporting departmental and wider business transformation initiatives.
What We’re Looking For
At Trinity, we know that how you work with others matters as much as what you know. We’re looking for someone who:
- Leads and develops teams through clear direction, coaching, and accountability.
- Drives continuous improvement in performance, quality, and efficiency.
- Makes sound commercial and operational decisions.
- Builds strong relationships across departments and with key stakeholders.
- Uses data and insight to manage workloads, priorities, and performance.
- Promotes high standards, compliance, and best practice.
- Remains calm, organised, and effective under pressure.
Why You’ll Love Working Here
- Car allowance/Company Car
- 23 days’ holiday (plus bank holidays)
- Salary sacrifice Pension scheme
- 3 x salary Life Assurance to support your future
- Access to our Employee Assistance Programme for your wellbeing
- Access to Vivup employee discounts platform
- 24/7 Online GP service
- Friendly and supportive team environment
- Long-term career opportunities within a growing organisation
About PTSG
PTSG Group is a leading provider of specialist services across the UK and Europe.
Through the acquisition of high-quality specialist businesses, PTSG has built a group of industry-leading companies delivering services across Access & Safety, Electrical Services, Building Access, Fire Solutions, and Water Treatment.
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With over 3,300 specialists supporting 90,000+ customers across 200,000 buildings, delivering over 170 different services, we are committed to delivering safe, compliant, and high-quality services nationwide.
At PTSG, our aim is simple. To be a great place to work and a great company to do business with.
Armed Forces Covenant
PTSG Group is proud to support the Armed Forces community and has formally signed the UK Armed Forces Covenant.
We recognise the valuable skills and experience that service leavers, veterans, reservists, and military families bring to the workplace, including leadership, teamwork, resilience, and technical expertise.
As part of our commitment, we guarantee an interview to ex-Forces applicants who meet the minimum criteria for the role and are committed to supporting Armed Forces personnel in building long-term civilian careers across our business.
Equal Opportunities
PTSG Group is an equal opportunities employer. We are committed to creating an inclusive and supportive workplace where everyone is treated fairly and with respect.
We welcome applications from all backgrounds and are dedicated to promoting diversity, equality, and inclusion throughout our recruitment process and across the wider business.
Security Vetting
It is an industry requirement that successful candidates undergo security vetting. Offers of employment are subject to satisfactory vetting and may be withdrawn if the required standards are not met.
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