Senior Thermal Engineer: Mechanical Design Lead

Concurrent Technologies Plc; Colchester; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

25 days holidays + bank holidays andr?

Job summary

Concurrent Technologies Plc is seeking a Senior Thermal Engineer to own the thermal direction of high‑power electronic systems. You will lead design activities, drive CFD analysis, and ensure robust, manufacturable cooling solutions across environmental conditions.

You will collaborate with mechanical, electrical and manufacturing teams, mentor junior engineers, and push improvements in tools, processes and best practices. A strong background in heat transfer and mechanical design is essential.

Qualifications

• Significant experience in thermal design of electronics or high-power systems.
• Strong proficiency in CFD tools (e.g Solid works flow simulation).
• Excellent understanding of heat transfer fundamentals and practical application.
• Experience with conduction and air-cooled systems in constrained environment.
• Proven hands-on mechanical design experience (not just analysis).
• Strong CAD capability (SolidWorks).
• Experience designing thermal/mechanical assemblies for production.
• Understanding of tolerancing, interfaces, and real-world build constraints.
• Demonstrated ability to take ownership of designs from concept through to production.

Responsibilities

• Own thermal architecture and design for complex electronic systems.
• Perform detailed thermal modelling using CFD and analytical approaches.
• Define and manage thermal budgets and worst-case analyses.
• Develop and optimise cooling solutions (forced air, conduction, hybrid approaches).
• Ensure designs meet performance requirements across full environmental conditions.
• Correlate simulation results with physical test data and refine models.
• Design and develop thermal hardware (heatsinks, frames, cold plates, enclosures).
• Contribute directly to mechanical design, ensuring thermal considerations are embedded.
• Create/review CAD models and engineering drawings.
• Ensure manufacturability, robustness, and cost-effective design solutions.
• Influence materials selection, surface finishes, and interface design for thermal performance.
• Engage at concept stage to influence system architecture and layout.
• Identify thermal risks early and drive mitigation strategies.
• Work closely with electrical, systems, and manufacturing teams.
• Provide technical input into design reviews and key engineering decisions.
• Define and execute thermal validation plans.
• Instrument systems and support test activities.
• Analyse and present data clearly to stakeholders.
• Ensure strong correlation between predicted and measured performance.
• Act as subject matter expert for thermal engineering within the team.
• Mentor and support junior engineers where required.
• Drive improvements in tools, processes, and best practices.

Skills

Thermal design

CFD analysis

SolidWorks CAD

Thermal testing

Education

Mechanical Engineering degree

Thermal Engineering degree

Tools

SolidWorks

SolidWorks Flow Simulation

CFD tools

Job description

Concurrent Technologies Plc is seeking a Senior Thermal Engineer to own the thermal direction of high‑power electronic systems. You will lead design activities, drive CFD analysis, and ensure robust, manufacturable cooling solutions across environmental conditions.

You will collaborate with mechanical, electrical and manufacturing teams, mentor junior engineers, and push improvements in tools, processes and best practices. A strong background in heat transfer and mechanical design is essential.