Quantum Computing Jobs

60 jobs for “Software Engineer”

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IonQ logo

IonQ · 501–1000 people · Public

Software Engineer, Non-Realtime Controllers

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  • Oxford
  • Hybrid
  • Mid-level

Build and operate the software controlling the supporting hardware of trapped-ion quantum computers, from cryogenic compressors to lasers, wavemeters and sensors. You'll own device controllers end to end — API design, implementation, fleet rollout and operational health — working in a Rust codebase with hardware protocols like SCPI, serial, TCP/IP and USB alongside software, systems and quantum science teams.

Rust · SCPI · TCP/IP +1

Clearance required 3 weeks ago
IonQ logo

IonQ · 501–1000 people · Public

Software Engineer, System Orchestration

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  • Oxford
  • Hybrid
  • Mid-level

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.

Rust · PostgreSQL · gRPC +7

Clearance required 3 weeks ago

Arqit

Software Engineers

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  • Belfast

Builds horizontally scalable, mission-critical enterprise software within a fast-moving product team where code ships to customers in weeks. Works with systems architects on component design, applies AI tooling across the development lifecycle, and monitors production performance. Uses languages such as Java, Kotlin, Rust, Python or C++ with containers and cloud IaaS/PaaS.

AI Coding Companions · IaaS · PaaS

3 weeks ago
Rigetti logo

Rigetti · 51–200 people · Public

Senior Software Engineer, Internal Systems

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  • Berkeley, United States
  • Hybrid
  • US$180,000 – US$250,000 pa
  • Senior

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.

AWS · Kubernetes · Kafka +2

Last month

Infleqtion · 51–200 people · Public

Quantum Software Engineer - QEC

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  • Kidlington
  • Hybrid
  • Mid-level
  • Permanent

Designs, analyses and implements fault-tolerant architectures for scalable quantum computation, developing error-correcting codes, decoders and fault-tolerant gate constructions tailored to neutral atom hardware. Works with hardware, control and compiler teams to model noise, optimise syndrome extraction and define logical performance metrics, bridging QEC theory and experimental implementation.

8 months ago

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Infleqtion · 51–200 people · Public

Quantum Software Engineer - Algorithms & Applications

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  • Kidlington
  • Hybrid
  • Mid-level
  • Permanent

Designs, implements and optimises quantum algorithms for simulation, optimisation and hybrid quantum-classical workloads, working with hardware, control and research teams to turn theory into executable applications. Deploys software optimisations to the Superstaq cloud platform using industry-grade engineering practices, supports customers, and contributes to research publications and commercial proposals.

Superstaq

8 months ago

PQShield · 51–200 people · Series B

Lead Software Engineer

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  • Remote (within the countries we operate from); UK, France, Netherlands, Spain, or Belgium. Some travel to our offices will be required from time-to-time
  • Remote
  • Lead · manages people

Lead a cryptographic software IP team, owning the full development lifecycle from architecture and planning to testing and customer delivery. Combines hands-on embedded C expertise with line management, hiring, mentoring and cross-team strategy, working on post-quantum cryptography and RISC-V with hardware and vulnerability teams.

GitLab CI · NIST PQC · RISC-V +1

3 weeks ago
Oxford Ionics logo

Oxford Ionics · 51–200 people · Series B

Staff Software Engineer, System Orchestration

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  • Oxford
  • Hybrid
  • Senior

Hands-on staff engineering role building the control plane that schedules and prioritises quantum programs, arbitrates exclusive hardware access, streams results and records everything that ran across a fleet of trapped-ion quantum computers. Work spans Rust services, PostgreSQL persistence, crash recovery and scheduling frameworks, with deep diagnosis of live-system failures.

Rust · gRPC · REST +6

5 days ago
Rigetti logo

Rigetti · 51–200 people · Public

Senior Software Engineering Manager

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  • Berkeley, United States
  • Hybrid
  • US$220,000 – US$250,000 pa
  • Senior · manages people
  • Permanent

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.

Kafka · Kinesis · Spark Streaming +7

5 months ago

Arqit

Senior Software Engineers

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  • Belfast
  • Senior

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.

Linux · AI Coding Companions

3 weeks ago

Universal Quantum · 51–200 people · Series A

Electronics Engineer - Design and Verification

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  • Haywards Heath
  • On-site
  • Mid-level
  • Permanent

Lead testing of integrated electronic circuits and subsystems, designing and building analogue and digital electronics using CAD tools and test equipment. Document circuits and verification tests while collaborating with mechanical, software and physics teams to build test systems for quantum computers.

Visa sponsorship 5 months ago

Quantinuum · 201–500 people · Series B

Senior Manager - Quantum Software Development Tools - 929

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  • Cambridge
  • Hybrid
  • Senior · manages people

Leads engineering teams building core quantum languages, compilers and toolkits such as Selene, TKET, HUGR and Guppy, balancing people management with technical roadmap execution. Stays hands-on through design discussions, architectural reviews and code problem-solving, and guides tooling from research prototypes to production-grade software. Collaborates with hardware, theory and product teams across global sites, with occasional international travel.

Selene · TKET · HUGR +1

3 months ago

PQShield · 51–200 people · Series B

Technical Product Manager (Software Security & Firmware)

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  • Remote (within the countries we operate within; Some travel to our offices will be required from time-to-time
  • Remote
  • Senior

Owns the product roadmap for software-based security IPs, cryptographic libraries and firmware, defining how security software integrates with hardware IPs and SoC architectures. Acts as domain expert on classical and post-quantum cryptography, hardening products against side-channel, DPA and timing attacks, and authoring PRDs that translate crypto standards into engineering requirements. Works directly with founders and customers in a deep-tech semiconductor context.

RISC-V · Arm · x86 +5

Last month

Universal Quantum · 51–200 people · Series A

RF- Electronics Engineer

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  • Haywards Heath
  • On-site
  • Permanent

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.

2 months ago

PsiQuantum · 501–1000 people · Late stage

Manager, Quantum Applications Software

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  • Warrington
  • £99,400 – £116,900 pa
  • Lead · manages people

Lead a small team of quantum applications software developers while remaining hands-on, building simulators, resource estimators and circuit compilation pipelines for fault-tolerant quantum computing. The role combines people management with technical delivery, partnering with algorithm researchers and architects to turn quantum algorithms into practical, production-quality tools.

Python · C++

2 weeks ago

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