Location: London Bridge / Southwark

Type: Full-time / 100% Office-based (Monday–Friday, 8:30 AM – 5:30 PM)

About Us

Maris Contracts is one of the UK’s emerging build specialists, delivering mechanical, electrical, partitioning and specialist construction services. Since launching in July 2020, we’ve grown by developing and inspiring our people to build smarter and to the highest standards. We believe in hiring, mentoring, and retaining the best talent to ensure quality and consistency throughout our projects.

The Role

We’re looking for a Mechanical Services Design Engineer to join our team. Reporting to the Mechanical Services Director, this role involves full project engagement, working on the design of HVAC systems and above-ground water and waste services. This position serves as a stepping stone to a Pre-Contracts Manager role. You will receive extensive support and training throughout your journey toward Pre-Contract Management.

You'll be responsible for producing technical designs, coordinating with wider project teams, and supporting the delivery of practical, regulation-compliant building services solutions.

What You’ll Be Doing

Producing mechanical and public health layouts, schematics and detailed designs using AutoCAD and Revit

Creating equipment schedules (e.g. FCUs, AHUs, HRUs, grilles, attenuators, fire dampers etc)

Completing fresh air and load mapping calculations using IES or similar software

Sizing ductwork and pipework accurately

Preparing technical submissions and reports using MS Office

Selecting mechanical equipment and plant

Coordinating designs with existing services, building constraints and all related trades

Undertaking site surveys and ensuring no adverse impact on existing systems

Ensuring all designs meet building regulations, health and safety requirements and best practice

Supporting junior engineers and maintaining high quality design standards

What We’re Looking For

✅ Minimum 5 years’ experience in mechanical and public health services design

✅ Degree in mechanical or building services engineering

✅ Proficient in AutoCAD; confident using MS Office

✅ Knowledge of thermal dynamics and experience with IES or similar software

✅ Good understanding of commercial design and build fit-out projects

✅ Revit and AutoCAD MEP experience desirable

✅ Self-motivated, organised and able to prioritise in a fast-paced environment

Why Join Us?

Generous holiday package with 25 days annual leave plus bank holidays, Christmas period off and every last working Friday off each month with pay day

☕ On-site coffee shop – Free breakfast, tea, coffee and fresh fruit all day

Salary sacrifice pension scheme – Maris Contracts contributes 15% savings to your pension scheme

️ Life assurance – 3x salary after 12 months’ service

Employee Assistance Programme – 24/7 online GP service plus mental, financial, and physical wellbeing support