Senior Mechanical Engineer

Box Twenty Consulting Engineers; United Kingdom; Hybrid; GBP 40,000 - 50,000; Full time

Benefits offered by this job

Hybrid working options

Support towards Chartership

Friendly team environment

Work on sustainable projects

Job summary

A growing consultancy in Bristol seeks a Senior Mechanical Engineer to lead the mechanical design process. You will work closely with clients, mentor junior engineers, and produce high-quality design documents for diverse projects. This role offers competitive pay (£40,000 – £50,000) and benefits, including hybrid working options and ongoing career support. Ideal candidates should have experience in mechanical design, be chartered or working towards it, and be proficient with tools like Revit and AutoCAD.

Qualifications

• Experience in mechanical building services design.
• Ability to lead independently and work collaboratively.
• Fluency in English.

Responsibilities

• Produce design documents including calculations and models.
• Represent the business in client meetings.
• Mentor junior engineers.
• Ensure compliance with building regulations.

Skills

Mechanical building services design

Collaboration

Clear communication

Revit

IES

Amtech

AutoCAD

Education

Chartered engineer or working towards chartership

Tools

Revit

IES

Amtech

AutoCAD

Job description

Box Twenty Consulting Engineers provided pay range

This range is provided by Box Twenty Consulting Engineers. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Senior Mechanical Engineer – £40,000 – £50,000, depending on experience + Benefits - Bristol

Ready to step into a senior role where your ideas matter, your growth is supported, and your work has real impact?

At Box Twenty Consulting Engineers, we give you more than just a job title. You'll have the chance to lead meaningful building services projects, guide a talented team, and shape low‑carbon design solutions that make a difference. No corporate red tape – just a clear path to progress, recognition for your work, and a team that values what you bring.

The role

As a Senior Mechanical Engineer, you’ll take ownership of the mechanical design process from day one. You’ll work closely with clients, contribute to strategy, and mentor junior engineers – all while working on a wide range of interesting, design‑led projects in Bristol and beyond.

Key Responsibilities

• Produce high‑quality design documents – from calculations and models to specifications and drawings
• Represent the business in client meetings and design team workshops
• Provide day‑to‑day support and mentorship to junior colleagues
• Keep on top of design standards, building regulations, and sustainable technologies
• Plan and manage your work effectively to meet project deadlines

About our company

We’re Box Twenty – a growing, independent consultancy based in Bristol. We believe great engineering starts with great people. That’s why we prioritise collaboration, innovation, and real flexibility. Our projects span residential, education, leisure, and commercial sectors – giving you variety and challenge without the burnout.

The Benefits

• Hybrid working options – balance home and office life
• Ongoing support towards Chartership and career development
• A friendly, no‑ego team that genuinely enjoys what they do
• Opportunity to work on exciting, sustainable design projects that matter

The person

We're looking for someone who:

• Is Chartered or actively working towards it
• Has solid experience in mechanical building services design
• Enjoys working collaboratively but can also lead independently
• Communicates clearly and professionally with clients and teams
• Is confident using Revit, IES, Amtech, AutoCAD and similar tools
• Is fluent in English and eligible to work in the UK

What’s next

This could be your next big move – and we’d love to hear from you. Apply now to join a company where your skills, voice, and future are all valued.

Seniority level

Not Applicable

Employment type

Full‑time

Job function

Consulting, Engineering, and Other

Industries

Design Services

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