How much experience is required?

At least 4 years of relevant experience for this Senior Mechanical Engineer, Reliability role.

What's the tech stack?

Joblaze extracted these technologies from the posting: Cryogenic systems, GD&T, Optomechanical Systems, PLM, Solidworks, vacuum systems.

What seniority level is this role?

IonQ targets senior candidates for this position.

Is this full-time or contract?

Full-time for this Senior Mechanical Engineer, Reliability role at IonQ.

Senior Mechanical Engineer, Reliability at IonQ

Joblaze summary

In the role of Senior Mechanical Engineer on the Reliability Engineering team at IonQ, the individual will focus on maintaining and enhancing the performance of quantum computers by diagnosing and resolving mechanical and thermal issues in live systems. Key skills include proficiency in CAD software, particularly SolidWorks, and experience with cryogenic and vacuum systems, alongside a solid foundation in root cause analysis. This position is ideal for a mechanical engineer with over four years of industry experience who thrives in collaborative environments and is eager to tackle complex engineering challenges. IonQ's commitment to innovation in quantum computing offers a unique backdrop fo

Joblaze insights

Listed today — first seen on Joblaze October 21, 2026. Last confirmed on IonQ's careers page October 21, 2026.
Cryogenic systems appears in 0.8% of 128 comparable senior other roles in United Kingdom; vacuum systems appears in 0.8% of 128 comparable senior other roles in United Kingdom.

Quick facts

How much experience is required?: At least 4 years of relevant experience for this Senior Mechanical Engineer, Reliability role.
What's the tech stack?: Joblaze extracted these technologies from the posting: Cryogenic systems, GD&T, Optomechanical Systems, PLM, Solidworks, vacuum systems.
What seniority level is this role?: IonQ targets senior candidates for this position.
Is this full-time or contract?: Full-time for this Senior Mechanical Engineer, Reliability role at IonQ.

From the original posting

About IonQ:

Role Overview

Role:

At Oxford Ionics, now part of IonQ, we are building the first practical quantum computer. As a Senior Mechanical Engineer on the Reliability Engineering team, you’ll keep our quantum computers running at their best, boosting fleet uptime and cutting operating cost.

You’ll work closely with electrical, optical and science colleagues as part of a supportive, collaborative team, updating mechanical designs and managing configuration so their system improvements can land.

Responsibilities:

Your focus will be the live fleet. You will root-cause mechanical, vacuum, cryogenic and thermal faults on running systems, prioritise issues by their impact on uptime, and analyse failed parts to track recurring failure modes.

Where a challenge keeps coming back, you will design, prototype and test the solution, then write the assembly and upgrade instructions that bring the new design into existing fleets, working with our operations team to get upgrades implemented into live systems. You will keep the product lifecycle management (PLM) system, build records and engineering change requests (ECRs) up to date so fixes carry into future builds.

Key responsibilities include:

Root-cause mechanical, vacuum, cryogenic and thermal faults on live systems, prioritising issues by impact on uptime.
Design, prototype and test solutions to recurring challenges.
Implement mechanical changes that enable electrical and optical improvements.
Write assembly and upgrade instructions to bring new designs into existing fleets, and work with our operations team to implement upgrades in live systems.
Analyse failed parts, track recurring failure modes and update the PLM system, build records and ECRs so fixes carry into future builds.

Requirements:

You will be a mechanical engineer with a strong design background and 4+ years of relevant industry experience. A degree in Mechanical Engineering or a related field, or equivalent practical experience (including apprenticeship routes), is expected.

You are proactive and self-directed, happy to ask for input, and comfortable working on systems where uptime matters while collaborating across disciplines.

Quantum experience is not required. We will teach you the rest, and if you meet most of this posting and the work excites you, we encourage you to apply.

You’d be a great fit with:

Established CAD ability, ideally SolidWorks, plus geometric dimensioning and tolerancing (GD&T) and PLM experience.
Experience with cryogenic, vacuum, or optomechanical systems.
Structured root cause and failure analysis (e.g. 5 Whys, failure mode and effects analysis).
Ability to explain technical trade-offs across disciplines.

The total compensation package includes base salary, bonus, equity, and a range of benefits available on our career site.

Compensation will vary based on individual factors such as education, qualifications, and experience of the final candidate(s), specific office location, and calibration against relevant market data and internal team equity. Posted base salary figures are subject to change as new market data becomes available. Our benefits include comprehensive medical, dental, and vision plans, matching 401(k), unlimited PTO and paid holidays, parental/adoption leave, legal insurance, and a home technology stipend. Details of participation in these benefit plans will be provided when a candidate receives an offer of employment.

Standard company text repeated across IonQ's postings is omitted here.