Senior Mechanical Engineer - Downhole Tools

iO Associates; Bristol; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

Join a cutting-edge engineering company as a Mechanical Engineer - Downhole Tools in Bristol. Utilize your expertise in mechanical design and downhole tool applications to tackle engineering challenges and contribute to innovative energy solutions. The role offers a flexible hybrid environment and growth opportunities within a supportive team.

Benefits

Flexible work environment

Career development support

Cross-disciplinary collaboration

Qualifications

• Minimum 6 years of experience in mechanical design.
• Proven experience with downhole tools is essential.
• Hands-on experience with manufacturing methods and shop floor testing.

Responsibilities

• Designing mechanical assemblies for downhole applications.
• Substantiating designs with calculations and FEA analysis.
• Producing comprehensive documentation for design reports and test results.

Skills

Mechanical design

Downhole tools

FEA

CFD interpretation

Communication

Education

Degree in Mechanical Engineering

Tools

3D CAD Systems (Creo preferred)

Job description

Job Title: Mechanical Engineer - Downhole Tools
Location: Bristol (Hybrid)
Salary: Competitive + Benefits
Type: Permanent | Full Time (Monday-Friday, 37.5 hours/week)

iO Associates is proud to be partnered with a cutting-edge engineering company at the forefront of downhole technology development. As part of their continued growth into the geothermal and energy sectors, they are looking to expand their mechanical engineering team with an experienced Mechanical Engineer who brings specific experience with downhole tools.

This is a highly collaborative role within a multidisciplinary team tackling some of the industry's toughest engineering challenges-from high-pressure, high-temperature environments to mechanical dynamics, corrosion, and wear.

The Role:

As a Mechanical Engineer, you will play a key role in the design, development, and testing of downhole tools. You'll be expected to validate your work through engineering calculations, contribute to experimental setups, and participate in hands-on shop floor testing. This role requires both practical and analytical expertise, with opportunities to work on products used in both Oil & Gas and emerging geothermal markets.

Your Responsibilities Will Include:

• Designing mechanical assemblies for downhole applications

• Substantiating designs with calculations and FEA analysis

• Developing test setups and participating in test execution

• Producing comprehensive documentation (design reports, test results, specifications)

• Supporting manufacturing and suppliers with technical queries

• Reviewing and approving engineering drawings and specifications

• Collaborating across teams to enhance product reliability and innovation

What You'll Need:

• Degree in Mechanical Engineering

• Minimum 6 years of experience in mechanical design

• Proven experience with downhole tools is essential

• Understanding of materials, coatings, and mechanical properties

• Proficiency with FEA (static and dynamic) and CFD interpretation

• Hands-on experience with manufacturing methods and shop floor testing

• Excellent communication and documentation skills

• Familiarity with 3D CAD systems (Creo preferred)

Why Join?

• Work in a high-impact industry at the intersection of energy, innovation, and sustainability

• Be part of a supportive team that values technical growth and cross-disciplinary collaboration

• Enjoy a flexible and stimulating work environment with career development support

• Get involved in both established and next-gen energy technologies