Mechanical & thermal engineer Work, Jobs in London, Eng (with Salaries)

Mechanical & Thermal Engineer
Lúnasa —London
- Analysis skills
- In-person
- Employee assistance programme
Mechanical Engineer
OLIX —London
- From £102,000 a year
- Full-time
- Engineering
Mechanical Design Engineer
Motorola Solutions —Ware
- Full-time
- English
- Quality control
- Travel
Senior Opto-Mechanical Engineer
OLIX —London
- From £102,000 a year
- Full-time
- Heavy lifting
- Engineering
- Master's degree
Environmental / Mechanical Test Engineer ( Hardware)
OP —Slough
- £21 - £24 an hour
- Temporary
- Laboratory experience
- In-person
Quick apply
Managing Engineer - Thermal Sciences (Ph.D.)
Exponent Inc. —London
- Full-time
- Doctoral degree
- Engineering
- Business development
Mechanical Design Engineer
Equans —Bow
- Full-time
- Microsoft Word
- HVAC
- Communication skills
- Annual leave
- Employee assistance programme
Principal Engineer - Thermal Sciences (MS/PhD)
Exponent Inc. —London
- Full-time
- Doctoral degree
- Engineering
- Master's degree
Mechanical Engineering Manager
OLIX —London
- From £163,000 a year
- Full-time
- Team management
- Budgeting
- Leadership
Associate Director Bioresources Mechanical Engineering
AtkinsRéalis —Epsom
- Full-time
- Hybrid work
- Engineering
- Travel
- Mentoring
Mechanical Design Engineer
IONATE —London
- Full-time
- Hybrid work
- Engineering
- Bachelor's degree
- Continuous improvement
Quick apply
Lead Mechanical Engineer, EMEA
Verda —London
- Full-time
- Hybrid work
- Engineering
- HVAC
Mechanical Engineer
AtkinsRéalis —London
- Full-time
- Hybrid work
- No degree
7d
Mechanical Design Engineer - Optronics & Missile Electronics (OME)
Capgemini —Woking
- Hybrid work
- Bachelor's degree
- Travel
Senior Mechanical Engineer (Modular Data Center)
Orbital —London
- Full-time
- Hybrid work
- Continuous improvement
- HVAC
- Manufacturing
- Annual leave
Junior Space Systems Engineer
Foundational —London
- £35,000 - £45,000 a year
- Full-time
- Engineering
- Scripting
- In-person
Quick apply
4d
Senior Process Engineer - Waste Thermal Treatment
SLR Consulting —London
- Full-time
- Engineering
- Master's degree
- Business development
- Annual leave
- Employee assistance programme
Senior Mechanical Engineer
Motorola Solutions —Ware
- Full-time
- Hybrid work
- English
- Travel
- Communication skills
- Employee stock purchase plan
- Employee assistance programme
5d
Senior Thermal Engineer
ALTEN —London
- Full-time
- Remote
- Writing skills
- Engineering
- Master's degree
- Employee assistance programme
- Life insurance
Quick apply
Technical Staff, Thermal Architect
Dell Technologies —London
- Doctoral degree
- Engineering
- Master's degree
7d

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Mechanical & Thermal Engineer

Lúnasa -
London

Apply Now

Job details

Benefits

Company pension
Employee assistance programme

Qualifications

Finite element modelling
Mechanical design
Analysis skills
FEA
Drafting and CAD design experience

Full job description

April 8, 2026

About Lúnasa

Lúnasa is a UK-based NewSpace company (acquired by Infinite Orbits) building advanced and autonomous systems and satellites for in-orbit satellite services. Our mission is to provide geostationary operators with all the in-orbit services they need, from the inspection of their assets to the extension of their lifespan and the management of the end-of-life phase.

The company has received multiple contracts from the UK Space Agency and ESA to build and deploy AI-based satellite rendezvous proximity operations (RPO) technology and is set to demonstrate the innovation in space by 2027.

Location: London (on-site)
This position is for a candidate who has the right to work in the UK.
The applicant must be able to obtain UK national security clearance

Job Summary:
In this role, as a Mechanical and Thermal Engineer, you will lead the design, analysis, and development of spacecraft structures and thermal systems across the full lifecycle, from early trade studies and preliminary design through detailed design, manufacturing, and verification. You will work closely with systems, avionics, and AIT teams to ensure robust, flight-ready hardware, and play a key role during integration, testing, and delivery.

This is a hands-on, high-ownership role in a fast-paced environment. You will be expected to make critical design decisions, solve complex engineering challenges, and directly contribute to hardware that will operate in orbit. The ideal candidate is comfortable working across disciplines, thrives in ambiguity, and is motivated by building real space systems end-to-end.

Key Skills and Experience:

Strong background in spacecraft mechanical and thermal engineering, with hands-on experience across the full lifecycle (concept design build

test)
Proven experience in mechanical design of space hardware, including structures, mechanisms, and/or payload integration
Solid understanding of thermal control systems (passive and active), including thermal modelling and analysis
Experience with FEA and thermal analysis tools (e.g. ANSYS, Nastran, Thermal Desktop, ESATAN, or similar)
Proficiency in CAD design (e.g. SolidWorks, CATIA, NX, or similar), including manufacturing-ready drawings and assemblies

Essential Skills:

End-to-end ownership mindset: able to take a subsystem from early concept through to flight hardware
Strong analytical thinking with the ability to translate requirements into robust engineering solutions
Comfortable operating with high autonomy and responsibility in an evolving environment
Excellent problem-solving skills, especially under constraints and ambiguity
Clear and structured communication, both written and verbal

Refine Your Search

mechanical & thermal engineer jobs in london, eng

Mechanical & Thermal Engineer

Mechanical Engineer

Mechanical Design Engineer

Senior Opto-Mechanical Engineer

Environmental / Mechanical Test Engineer ( Hardware)

Managing Engineer - Thermal Sciences (Ph.D.)

Mechanical Design Engineer

Principal Engineer - Thermal Sciences (MS/PhD)

Mechanical Engineering Manager

Associate Director Bioresources Mechanical Engineering

Mechanical Design Engineer

Lead Mechanical Engineer, EMEA

Mechanical Engineer

Mechanical Design Engineer - Optronics & Missile Electronics (OME)

Senior Mechanical Engineer (Modular Data Center)

Junior Space Systems Engineer

Senior Process Engineer - Waste Thermal Treatment

Senior Mechanical Engineer

Senior Thermal Engineer

Technical Staff, Thermal Architect

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