Senior Mechanical Design Engineer

HyKit Ltd; Bicester; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

25 days holiday

Private medical insurance

Discretionary bonus

Pension up to 8%

Life assurance

Income protection

Employee assistance programme

Electric car scheme

Cycle to work

Retail discounts

Job summary

Hykit, based in the United Kingdom, is seeking a Senior Mechanical Design Engineer to advance hydrogen infrastructure products for construction, transport and agricultural sectors. The role is onsite in Bicester and offers hands-on design work from concept through production release.

You’ll own design packages, deliver detailed 3D models and drawings, apply DFM/DFA, and collaborate with cross-functional teams to bring rugged, manufacturable solutions to deployment in clean energy applications.

Qualifications

• Bachelor's/Master's degree in Mechanical Engineering or equivalent.
• Strong CAD experience with SolidWorks or CATIA.
• Experience producing detailed drawings, assemblies and BOMs.
• Understanding of fabrication and manufacturing processes.
• Familiarity with engineering change control and document management.

Responsibilities

• Deliver high-quality mechanical design work across Hykit's product range.
• Produce detailed designs, drawings and documentation for concepts through to production release.
• Own assigned design packages and support lifecycle from concept to deployment.
• Apply DFM and DFA principles to improve manufacturability and quality.
• Support design reviews, risk assessments and FMEA activities.
• Collaborate with suppliers, manufacturing and cross-functional teams.

Skills

CAD capability

Problem-solving

Multi-project management

Hydrogen/pressured gas familiarity

ATEX/PED/PSSR familiarity

Chartered Engineer aspirations

Education

Degree in Mechanical Engineering (BEng or MEng)

Tools

SolidWorks

CATIA

Job description

We’re looking for a Senior Mechanical Design Engineer to join Hykit, supporting the development of hydrogen infrastructure products for the construction equipment and agricultural sectors.

This is an onsite role based in Bicester and an opportunity to work on complex mechanical design challenges within a growing clean technology business focused on practical, deployable hydrogen solutions.

About Hykit

Hykit focuses on hydrogen infrastructure solutions, including mobile refuelling, gas storage and compression systems.

Working across clean energy and industrial technology, Hykit develops rugged, modular products designed for real-world deployment across construction, transport and agricultural environments.

The business operates in a fast-paced engineering environment, working closely with manufacturing, testing and supply chain teams to bring products from concept through to production and deployment.

The role

This role sits within the mechanical engineering team and is responsible for delivering high-quality mechanical design work across Hykit’s product range.

You’ll take ownership of assigned design packages, producing detailed engineering designs, drawings and documentation while supporting the wider product development lifecycle from concept through to production release.

The role works closely with EC&I, manufacturing, testing and supplier teams, contributing to safe, certifiable and manufacturable hydrogen infrastructure products.

What you’ll be doing

• Producing detailed mechanical designs, 3D models and engineering drawings using CAD software such as SolidWorks or CATIA
• Developing and maintaining BOMs, technical documentation and engineering records
• Supporting full product lifecycle delivery from concept through to production release
• Applying DFM and DFA principles to improve manufacturability and product quality
• Supporting design reviews, engineering risk assessments and FMEA activities
• Resolving mechanical engineering challenges relating to structural integrity, thermal management, sealing and pressure containment
• Supporting prototype builds, testing and validation activities
• Working closely with suppliers, manufacturing and cross-functional engineering teams
• Supporting commissioning, installation and field deployment activities where required
• Contributing to continuous improvement of engineering standards, templates and processes

What we’re looking for

• Degree-qualified Mechanical Engineer (BEng or MEng)
• Strong experience within mechanical design or product development environments
• Strong CAD capability (SolidWorks, CATIA or equivalent)
• Experience producing detailed engineering drawings, assembly models and BOMs
• Understanding of fabrication, machining and manufacturing processes
• Familiarity with engineering change control and document management processes
• Strong problem-solving skills with the ability to work across multiple projects and priorities
• Experience within hydrogen, compressed gas, fluid handling, industrial equipment or adjacent sectors would be beneficial
• Familiarity with ATEX, PED or PSSR standards would be advantageous
• Chartered Engineer progression or aspirations desirable

What you’ll get from the role

• Opportunity to work on innovative hydrogen infrastructure technology
• Exposure to full product development lifecycle activities
• A collaborative engineering environment with broad technical exposure
• Involvement in real-world clean energy deployment projects
• Opportunity to contribute to a growing business within the net zero sector

Benefits include:

• 25 days holiday + bank holidays
• Private Medical Insurance (BUPA)
• Discretionary bonus
• Pension up to 8%
• Life Assurance
• Income Protection
• Employee Assistance Programme
• Electric car scheme & cycle to work
• Retail and lifestyle discounts

This role would suit someone who enjoys hands-on engineering challenges, takes ownership of technical delivery and wants to contribute to practical clean energy solutions in a growing business.