Summer 2026
Quantum Software Intern
Posted on 2/13/2026
Infleqtion
201-500 employees
Edge-ready quantum hardware and software
No salary listed
Chicago, IL, USA
In Person
Relocation assistance may be available for qualified candidates.
 Software Engineering (1) |
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- Currently attending a degree program (computer science, engineering, physics, mathematics, or a directly related field) in the United States, preferably in penultimate academic year when returning to degree program after completion of internship
- Conduct research and development toward cutting-edge advances in quantum technology with a focus on quantum compilation, similar to work described in arXiv:2309.05157 and arXiv:2509.13247
- Deploy software optimizations to the cloud platform Superstaq using industry-grade software engineering procedures including documentation, linting, testing, and type-checking
- Interface with customers of Superstaq to understand their needs and support them in a timely fashion
- Contribute to development of government and commercial proposals and execution on global programs
- Collaborate with experimental physicists and software engineers to bridge the gap between theoretical concepts and practical implementation
- Engage with the broader scientific community by publishing research findings in scientific journals and presenting at conferences
- Stay up to date with the latest developments in quantum computer architecture, quantum compilation, quantum algorithms and applications, and related fields
- Provide guidance and support to other team members, fostering a collaborative research environment
- Tailor and apply quantum algorithms to real-world problems, analyzing their performance compared to classical methods
- Expand existing or develop new quantum algorithms for various types of real-world applications
- High proficiency in programming, with fluency in Python preferable or proficiency in alternative languages (e.g. C/C++ or Julia) with the ability to rapidly upskill in Python
- Experience with open-source quantum software frameworks such as Cirq or Qiskit (ideal candidates will have experience not only using these libraries but also modifying them)
- Experience with advanced open-source quantum software frameworks such as Stim
- Familiarity with best practices of professional software engineering such as coverage, integration tests, type checking, unit tests, and version control
- Experience with backend development with tools such as FastAPI for web frameworks and PostgreSQL/SQLAlchemy for databases
- Experience with cloud development, especially on GCP and AWS
- Familiarity with CI/CD, automated actions, issue tracking, version control, and other features on GitHub
- Familiarity with security core best-practices such as access control, encryption at rest, key rotation, and logging
- Exposure to or interest in front-end / GUI development, e.g., HTML/CSS, React, PyQt
Infleqtion (formerly ColdQuanta) develops quantum-enabled hardware and software designed for edge use. It builds portable quantum devices such as quantum sensors and ion-based systems, plus modular components and plug-and-play solutions that maintain data integrity from edge to computer. Its software platform, Superstaq, lets users write quantum programs in any language and run them on any quantum computer, enabling performance gains on standard benchmarks. The company differentiates itself by focusing on hardware-as-a-service at the edge, offering a broad range of ready-to-use devices and a versatile software stack, rather than just large quantum computers. It collaborates with the Department of Energy to speed commercialization and broaden adoption. The overall goal is to accelerate the deployment of quantum technology across research labs and businesses by providing accessible hardware and cross-backend software that integrates smoothly with existing systems.
Company Size
201-500
Company Stage
Grant
Total Funding
$922M
Headquarters
Boulder, Colorado
Founded
2007
Simplify's Take
What believers are saying
- Q1 2026 revenue reached $9.5 million, up 14% year over year.
- Management raised 2026 revenue outlook to at least $40 million.
- UK and U.S. government programs create recurring demand for hardware and software.
What critics are saying
- Commercial losses remain large versus revenue, pressuring valuation and financing needs.
- Roadmap depends on 30 logical qubits in 2026 and 100 by 2028.
- Superstaq faces commoditization if customers adopt vendor-native or open-source toolchains.
What makes Infleqtion unique
- Neutral-atom platform spans computing, sensing, clocks, RF, and inertial products.
- Superstaq software targets any gate-based quantum hardware, not only Infleqtion systems.
- Oxford expansion triples UK research, production, and systems-integration capacity.
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Growth & Insights and Company News
6 month growth
↓ -2%1 year growth
↓ -2%2 year growth
↓ -5%Quantum computing stocks are attracting strong analyst interest as the sector grows rapidly. Precedence Research values the quantum computing market at $1.44 billion in 2024, projecting it will reach $19.44 billion by 2035, representing a 29.7% CAGR. IonQ, using trapped ion technology, raised analyst attention after posting $61.9 million in 4Q25 revenues, up 429% year-over-year. Jefferies rates it a Buy with a $90 target, implying 213% upside. D-Wave Quantum's dual-platform approach combining annealing and gate-model systems has earned a unanimous Strong Buy rating from analysts, with a $38.18 average target suggesting 168% gains. Infleqtion, the sector's newcomer using neutral atom technology, went public in February through a SPAC transaction that raised $550 million. BTIG rates it a Buy with a $22 target, representing 75% potential upside.
Infleqtion, a quantum computing and sensing company, has announced 2026 revenue guidance of $40 million, reflecting growing customer demand for its neutral-atom quantum technologies. The company reported 2025 revenue of $32.5 million and a non-GAAP operating loss of $28.1 million. Recent business highlights include launching a quantum-enabled precision timing solution with Safran Electronics & Defense in April 2026, and delivering the UK's only operational 100-physical qubit quantum computing system to the National Quantum Computing Centre in March. The company secured additional funding through ARPA-E's QC3 programme and NASA's Quantum Gravity Gradiometer Pathfinder mission, bringing contracted funding to over $20 million. Chief executive Matthew Kinsella cited strengthened business operations and expanding customer relationships across defence, telecommunications and critical infrastructure sectors.
Infleqtion launches quantum timing solution with Safran partnership. Credit: Infleqtion Infleqtion has announced availability of its first quantum-enabled precision timing solution delivered as part of the company's partnership with Safran Electronics & Defense. The new solution includes Infleqtion's Tiqker quantum optical clock, which has been integrated and validated with Safran's White Rabbit and SecureSync systems. Modern systems, from financial markets to military operations, telecom networks and datacenters, depend on technologies such as GPS or GNSS for precise timing, but these are vulnerable to jamming, spoofing, and natural disruption. As threats to traditional timing infrastructure grow, the need for resilient, independent alternatives has become critical. In a recent live demonstration conducted in partnership with Quantum Corridor, the solution integrating Tiqker, White Rabbit and SecureSync system was validated in a real-world environment, demonstrating picosecond accuracy vs. nanosecond GPS accuracy. The combined, validated solution delivers enhanced stability and resilience, ensuring continuity of operations for mission-critical systems even in environments where traditional timing signals are challenged or denied. The collaboration between Infleqtion and Safran Electronics & Defense makes the validated solution available to customers globally, across allied defense, telecommunications, and critical infrastructure sectors, enabling rapid deployment of precision timing architectures designed to operate even in GNSS-challenged environments.
Infleqtion has delivered the UK's only operational 100 physical qubit quantum computing system to the National Quantum Computing Centre, marking a significant infrastructure milestone. The company has also been selected for US Department of Energy ARPA-E funding focused on quantum algorithms for advanced energy materials. Despite these technological advances, Infleqtion's share price has experienced significant volatility, trading at $8.81 with a 40.1% decline over 30 days and 48.6% year-to-date decline. The stock fell 12.6% over the past week. The developments position Infleqtion in sovereign infrastructure and energy-focused materials research. The UK testbed provides a reference site for researchers to test its neutral atom hardware, whilst the ARPA-E grant connects the technology to high-temperature superconductors and energy materials applications.
Infleqtion has delivered the UK's only operational 100-physical-qubit quantum computing system at the National Quantum Computing Centre, achieving a milestone critical to the UK's quantum strategy. The Sqale platform, delivered in December 2025, uses neutral-atom technology. The deployment is part of the NQCC's Quantum Computing Testbed Initiative, enabling researchers to evaluate performance, benchmark applications and study how neutral-atom systems scale. Infleqtion is targeting over 30 logical qubits in 2026 and more than 100 logical qubits in 2028. Infleqtion's neutral-atom approach has already been deployed in operational environments beyond laboratories, including quantum flight trials and underwater autonomous vehicles. The company's two-qubit gate fidelity of 99.73% delivers industry-leading performance, requiring fewer physical qubits per logical qubit for improved scalability.