Quantum Computing Jobs

Rigetti · US or UK Locations

Deploys and operates Rigetti quantum systems at customer sites, owning technical work from initial bring-up through sustained cloud operation. Specialises in either systems integration (cryogenic hardware, qubit and fridge characterisation) or gate calibration (1Q/2Q gate performance, automated recalibration, production monitoring). Requires up to 25% international travel and close collaboration with internal R&D teams.

Universal Quantum · Haywards Heath

Design, model and test high-fidelity quantum operations, developing control methods and accurate physics models based on real hardware specifications. Work closely with hardware teams to implement new methods on quantum devices, build benchmarking procedures and compare experimental results against theoretical predictions.

Universal Quantum · Haywards Heath

Designs and simulates quantum error correction protocols, tailoring them to hardware strengths and characterising physical qubit noise profiles. Performs resource estimation for large-scale applications and advises on hardware and software control choices to optimise error correction performance in the near and far term.

IonQ · Oxford

Owns a service or subsystem of the control plane that schedules and arbitrates access to trapped-ion quantum computers, keeping them calibrated and productive. Involves Rust, async programming, gRPC/REST services, PostgreSQL state machines, concurrency and failure handling, plus moving live systems onto new behaviour. Works closely with runtime, systems and operator teams.

Rigetti · Berkeley, United States · US$190,000 – US$240,000 pa

Hands-on role owning networking and physical infrastructure across Berkeley labs and a Fremont fabrication facility, including routing, racking, cabling, switches, firewalls and storage, while also supporting AWS cloud environments and infrastructure-as-code. The engineer flexes between data center work and cloud/DevOps tasks such as Terraform, Kubernetes and CI/CD, building new infrastructure as lab and fab space expands.

IonQ · Oxford

This role involves leading the validation and characterisation of analogue and mixed-signal ASICs for trapped-ion quantum processors. Responsibilities include developing validation strategies, building reusable hardware and software, and conducting cryogenic measurements to ensure silicon acceptance.

Infleqtion · Oxford

Designs, verifies and implements mixed-signal and analogue electronic systems for quantum products, covering signal-chain architecture, modelling and simulation, and digital/mixed-signal circuit design with DAC/ADC and FPGAs. Also handles PCB design and layout, RF shielding, cabling and routing, plus test plans and supplier engagement within a multi-disciplinary team.

PsiQuantum · Warrington

Develops scalable fibre-to-chip alignment schemes and opto-electronic packaging workflows for chip-based photonic integrated circuits at the UK R&D facility in Daresbury. Involves prototyping packaging flows, reviewing BOMs, sourcing materials with supply chain and external vendors, and transferring designs to manufacturing partners.

Infleqtion · Oxford

Lead scientist role focused on quantum radio frequency (QRF) research within a global quantum technology company. Involves driving experimental work on atom-based quantum sensors and platforms, bridging fundamental physics with commercial product development. Based in Kidlington, Oxford, with up to two days remote working per week.

Universal Quantum · Haywards Heath

A speculative application opening for a quantum computing company, inviting candidates to submit their details for roles that are often not publicly advertised. The team reviews submissions and reaches out to arrange a conversation when there appears to be a potential fit, with new roles being created regularly.

IonQ · Oxford

Inspects incoming, in-process and finished components against mechanical, electrical and PCBA specifications, interpreting GD&T drawings and programming CMM, OMM or vision systems. Owns the inspection side of the Material Review Board, controlling nonconforming material and closing NCRs, while allocating daily work and guiding less experienced inspectors.

IonQ · Oxford

The Staff Supplier Quality Engineer will lead the quality management of IonQ's supply chain, ensuring components meet high reliability and performance standards. Responsibilities include supplier selection, qualification, audits, and continuous improvement, with a focus on maintaining a robust quality system and compliance with industry standards.

IonQ · Oxford

As a Senior Mechanical Engineer on the Reliability Engineering team, you will focus on maintaining and improving the performance of IonQ's quantum computers. Your responsibilities include diagnosing and resolving mechanical, vacuum, cryogenic, and thermal faults, designing and implementing solutions, and updating product lifecycle management systems.

IonQ · Oxford

Hands-on role supporting the optical manufacturing team building and upgrading quantum computer systems. Day to day involves optical, mechanical and electrical assembly, keeping the lab and workshop tidy and safe, and producing and maintaining technical documentation alongside engineers, scientists and senior technicians.

IonQ · Oxford

Owns full-chip mixed-signal modelling and verification for cryo-CMOS ASICs used in trapped-ion quantum processors, building Verilog-A/AMS and real-number SystemVerilog models correlated against schematic and measured silicon. Leads AMS methodology, sign-off criteria and reviews, runs Cadence AMS/Xcelium-Spectre co-simulation and regressions, and mentors engineers through tape-out and silicon bring-up.