Job Title:Technical Design Engineer Location: Croxley Green, Hertfordshire (Hybrid 3 days office / 2 days home after training) Salary: Up to £38,000 per annum (DOE) Annual Bonus Benefits Hours: Monday Thursday 8:30am 5:15pm, Friday 8:30am 4:15pm (40 hours per week) Are you a technically minded engineer with experience in estimating and design within plumbing, heating, or HVAC systems? This is an excellent opportunity to join a leading manufacturer of innovative plumbing and heating solutions, supporting both domestic and large-scale commercial projects across the UK. Working within the Projects Team, youll play a vital role in providing technical, design, and estimating support to the UK Sales Teamhelping deliver accurate system designs, quotations, and customer solutions for a variety of building applications. Key Responsibilities: Support the UK Sales Team by managing customer enquiries and providing timely technical advice. Produce commercial and domestic system designs, quotations, and estimates. Create technical drawings, hydraulic calculations, and material lists for client proposals. Provide day-to-day technical support to sales and marketing teams. Ensure design and estimating deliverables are completed on time and to specification. Assist in the development of design tools, processes, and documentation. Develop proficiency with company software and systems through structured training. What Theyre Looking For: Proven experience in design and estimating roles within plumbing, heating, or HVAC sectors. Strong technical mindset with a good grasp of design principles, fluid mechanics, and heat transfer. Proficiency in CAD tools, MS Office, and relevant engineering or CRM software (e.g., Salesforce). Excellent communication and problem-solving skills with a collaborative approach. HNC/Degree in Mechanical Engineering or related discipline (advantageous). Candidates with strong estimating experience and interest in developing design capability are encouraged to apply. What They Offer: Competitive salary up to £38,000 (DOE) Annual company bonus 25 days holiday Christmas shutdown Health Cash Plan, Life Insurance, and up to 5% Pension Match Hybrid working (after training) Excellent career development and training opportunities in a supportive, social team environment Join a business where team culture, technical growth, and innovation come first. Youll be part of a collaborative environment where your input is valued and your development supported working on projects that shape the future of sustainable building solutions. By applying to this job advertisement, you confirm you have read and understood our Data Privacy Statement and give Bolt Technical authorisation to hold your provided data. Thank you for your interest in this vacancy, which is being advertised by Bolt Technical, who are acting as an employment agency/business. Your application will be considered alongside others, and we will contact you within five working days.