Computer Aided Design Designer

At Harmony Fire, our work saves lives. As a CAD Engineer within our Pre-Construction team, you will play a key role in producing accurate technical drawings that underpin the success of every project. By translating design calculations and layouts into precise 2D and 3D drawings, you will provide the clarity and consistency that gives our clients confidence in our professionalism and technical capability.

• Produce accurate 2D and 3D drawings for mechanical, electrical, and sprinkler installations
• Translate design calculations and layouts into detailed technical drawings for pre-construction and bid packages
• Collaborate closely with designers and estimators to ensure all drawings reflect project requirements and quantities
• Support estimators by providing drawing outputs that aid in quantity take-offs and accurate costing
• Maintain drawing standards, ensuring consistency, precision, and professional presentation
• Coordinate services with architectural and structural constraints to ensure buildable solutions
• Assist with the preparation of professional bid packages and technical submissions
• Contribute to the continuous improvement of CAD standards and workflows within the team
• Manage drawing revisions, including version control, file naming, and record-keeping

This is a detail-driven role requiring speed, accuracy, and collaboration. Working closely with designers and estimators, you will ensure every drawing is presented with precision and reflects the requirements of each project — from mechanical and electrical systems to sprinklers and fire protection layouts.

• Proven experience producing technical drawings in a construction, M&E, or fire protection environment
• Knowledge of building services, including mechanical, electrical, and sprinkler systems
• Ability to coordinate with multiple disciplines and manage drawing revisions effectively
• Sharp attention to detail with a do it right first time attitude
• Strong CAD skills (2D essential; 3D desirable), with the ability to produce clear, accurate layouts under time pressure
• A collaborative mindset — comfortable working with estimators, designers, and project managers
• Highly organised, with strong version control and documentation discipline

• Team socialising budget for all employees
• Private Medical cover
• Auto-enrolment pension scheme
• Cycle to work scheme
• Spacious and modern workspaces with state-of-the-art facilities
• Unlimited holiday provision
• Lunch, snacks, and refreshments all provided, including fresh fruit and ‘Takeaway Friday’
• Ongoing training, coaching, and mentoring
• Two company events each year
• A collaborative and supportive environment in which you can grow and develop your career
• Fun Loving Heart – we celebrate success and enjoy the journey together
• Family friendly policies including enhanced Maternity and Paternity
• Bonus scheme – opportunity to earn up to 50% of annual salary
• A chance to work alongside some of the best people in the industry, who always seek to share their knowledge and experience
• Bespoke Personal Development Plan for every employee
• Reward and Recognition scheme – European mini-breaks on offer