Latest Quantum Cryptography Jobs

Head of Systems Engineering

Lead multidisciplinary systems engineering across electronic, mechanical, cryogenic, vacuum, optical, software and control domains, owning system-level rigour from concept to customer deployment. Define the systems engineering strategy, lifecycle, standards and toolset including requirements management, MBSE, modelling and configuration control, while chairing design, readiness, test and acceptance reviews. Build and mentor engineering teams across UK and international locations, maintaining system-level plans, dependencies and technical risks to meet programme objectives.

Universal Quantum Haywards Heath

Hybrid Permanent

RF- Electronics Engineer

Designs RF PCBs and architecture for a custom RF delivery system, including cables and transmission lines, and defines specifications for key building blocks. Oversees RF verification and validation testing and documentation, working closely with electronics, ASIC, mechanical, software engineers and physicists on rapid proof-of-concept work.

Universal Quantum Haywards Heath

On-site Permanent

Senior Photonics Engineer, Optical Interfaces

Develops ultra-low-loss optical interfaces between dissimilar waveguiding platforms, combining device concept design, optical simulation with BeamPROP or FDTD, and hands-on experimental validation of coupling and mode conversion. Works with internal photonics, systems and experimental teams plus external partners to mature practical, manufacturable interface solutions.

PsiQuantum Warrington £64,000 – £76,500 pa

On-site Permanent

Mechanical Design Engineer – Photonic Hardware

Mechanical design role focused on precision hardware for optical quantum computing, covering enclosure and packaging design, thermal management, simulation and validation. Works closely with photonics, systems and architecture teams plus external suppliers, taking concepts from prototype build toward manufacturable systems.

PsiQuantum Warrington £50,000 – £56,000 pa

On-site Permanent

QRF Lead Scientist

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.

Infleqtion Oxford

Hybrid Permanent Flexible

Staff Supplier Quality Engineer

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

Senior Mechanical Engineer, Reliability

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

Senior Software Engineer, Internal Systems

Builds and maintains data-intensive Python backend services for Rigetti's internal software team, supporting quantum engineers and fab engineers with measurement, characterization and fabrication tooling. Work spans schema migrations, testing, CI, performance and observability, plus frameworks that let scientists use AI coding agents safely. Small senior team, no quantum background required.

Rigetti Berkeley, United States US$180,000 – US$250,000 pa

Hybrid

Senior Software Engineering Manager

Lead a cross-functional software engineering team building platforms for quantum device design, chip fabrication workflows, physics-informed data analysis, and QPU characterization. The role is hands-on, spanning team management, architecture, and data pipeline work with Python, AWS, and streaming tools, while partnering closely with quantum hardware, fabrication, and research teams.

Rigetti Berkeley, United States US$220,000 – US$250,000 pa

Hybrid Permanent

Senior Software Engineer - Modern C++ & Linux

A technical leadership role in an established backend team building Modern C++ (C++17) software on Debian Linux that controls scientific instruments, coordinating pumps, valves, sensors and gauges. You own APIs used by the web GUI and customer scripts, write Python automated tests, run design reviews, and mentor less experienced engineers while working with scientists and product managers.

KO2 Embedded Recruitment Solutions Abingdon £65,000 – £75,000 pa

Hybrid

Senior Software Engineers

Builds horizontally scalable, mission-critical enterprise software in a fast-moving product team where code ships to customers within weeks. Works across hybrid cloud IaaS/PaaS architectures using Java, Kotlin, Rust, Python or C++, embedding AI tooling across the development lifecycle, mentoring junior engineers and monitoring production performance.

Arqit Belfast

Liability Adjuster

Liability AdjusterLondon, RemoteCasualty claims If you’re a casualty / liability adjuster looking for a new home, then read on. Dealing with a caseload of EL/PL injury and TPPD claims on an investigate only basis, you’ll get a great manager who...

Exchange Street Claims & Financial Services London £42,500 pa

Internship Opportunities with Quantinuum 2026 - UK/Germany

Registering interest for ad-hoc internship positions lasting 3-6 months, mostly focused on specific projects or client collaborations rather than a formal summer programme. Work areas span quantum software development, chemistry, machine learning, algorithms, cybersecurity/encryption and hardware, with candidates ideally holding or pursuing a Master's or PhD.

Quantinuum London

Internship

Senior Software Engineer, System Orchestration

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.

IonQ Oxford

Hybrid Clearance Required

Software Engineer, System Orchestration

Builds the control plane that schedules quantum programs, calibration routines and customer workloads onto trapped-ion hardware, arbitrating exclusive access and streaming results. Owns persistence, data models and migrations, plus tests and harnesses run against real machines and simulators. Works in Rust, PostgreSQL and gRPC alongside runtime, systems and operator teams.

IonQ Oxford

Hybrid Clearance Required