Jobs at Infleqtion

The Senior Embedded Software Engineer will design and implement real-time embedded software for quantum error correction, ensuring high performance and reliability while collaborating with cross-functional teams.

Develop and maintain embedded Rust drivers, system-level APIs, and communication layers; integrate software with FPGA and hardware teams; support frontend tooling and UIs; write well-tested documentation, participate in code reviews, and collaborate across hardware, firmware, and application teams.

Seeking a Software Engineer with expertise in Rust and embedded systems to develop high-performance systems, collaborate across teams, and maintain technical documentation.

The Quantum Software Engineer role involves designing, implementing, and optimizing quantum error correction protocols, collaborating with teams to enhance quantum system reliability and scalability.

Lead research strategy for time and frequency systems and atom-based quantum clocks. Oversee performance characterization (stability, noise, accuracy), recommend system and component improvements, translate experimental results into product requirements, collaborate with systems engineering, mentor research staff, and support innovation, IP, and external engagement to align research with product goals.

Develop applications and algorithms for quantum computers, collaborate with teams on research, and optimize software for cloud platforms.

Lead Advanced Systems capture function for Quantum Sensing Solutions: build and manage ASM capture team, drive gated capture process, develop capture strategy, oversee proposal development and negotiations, manage capture pipeline and forecasts, ensure BD-to-execution handoffs, and partner with cross-functional stakeholders to win and transition strategic national security and commercial opportunities.

Manage and deliver technical and research projects on time, within scope and budget. Create project plans, allocate resources, manage risks, coordinate internal and external stakeholders, report progress, maintain documentation, and lead project reviews in accordance with the Infleqtion Product Lifecycle.

Lead and manage multiple hardware development subcontracts for Quantum Sensing Solutions: integrate supplier activities into program schedules, monitor cost/schedule/technical/quality performance, negotiate and manage contracts, assess and mitigate risks, track budgets and EACs, coordinate cross-functional teams, and communicate status to leadership and customers while ensuring compliance with government and regulatory requirements.

Develop and maintain CI/CD, build, test, and deployment pipelines for integrated software, firmware and gateware. Manage hardware-in-the-loop configurations, lab servers, networks and backups. Implement IaC, containerisation, secure software supply-chain practices, and documentation while collaborating with multidisciplinary engineering teams to ensure production-grade, traceable releases and high system uptime.

The DevOps Engineer will build and operate on-prem and hybrid infrastructure for quantum computing, manage Linux systems, and develop automation, while collaborating across disciplines in a dynamic environment.

Lead day-to-day accounting operations including payroll, AP, GL, reconciliations, cash accounting, sales & use tax, and SOX readiness. Manage and develop staff, drive month-end close, improve processes, and support audits and ERP initiatives.

Conduct R&D in quantum optimization for energy grid problems, write and test quantum code, collaborate with experimentalists and external partners, contribute to proposals, publish research, mentor team members, and run simulations and hardware experiments applying quantum algorithms to grid optimization.

Support project operations for quantum computing roadmap: coordinate facilities and procurement, track budgets, schedules, deliverables and risks, maintain Jira/Confluence artifacts, liaise between R&D and corporate teams, enforce compliance/export controls, and assist with scheduling, reporting, and inventory.

Lead the UK integrated photonics capability, driving design, simulation, fabrication, testing, and packaging of silicon photonics PICs and integrated subsystems. Oversee technical project execution, mentor team members, coordinate with foundries and suppliers, characterise lasers and combs, identify commercialization opportunities, and present technical results to stakeholders.

Lead revenue recognition, contract accounting, and ASC 606 analyses for complex multi-element, milestone, government, and commercial contracts. Prepare technical accounting memos, maintain revenue schedules and waterfall reports, support monthly/quarterly close and SEC disclosures, assist PCAOB audits, and improve NetSuite revenue processes and SOX controls while partnering cross-functionally with legal, program management, FP&A, and contracts teams.

Lead systems engineering to transform quantum hardware prototypes into manufacturable products: capture requirements, develop system architectures, maintain systems documentation, perform modeling/simulation, plan and support AI&T and V&V, manage technical risks and reliability analysis, and drive cross-functional systems engineering best practices.

Lead systems engineering for a Quantum Gravity Gradiometer pathfinder: manage requirements, ICDs, V&V, integration and test, configuration/document control, risk and FMEA, architecture and SWaP tracking, and product lifecycle execution while enabling repeatable systems practices and customer-ready deliverables for government and commercial R&D programs.

Provide legal counsel for complex commercial and strategic transactions (70–80% focus); draft, negotiate, and manage customer, government, licensing, SaaS, vendor, and research agreements; advise on export controls, national security, and public company reporting; align contracts with finance on revenue recognition and disclosure; develop scalable legal playbooks, training, and approval frameworks; and support cross-functional corporate, regulatory, and governance matters within a lean legal team.

The Senior Embedded Systems Engineer designs and develops embedded software and hardware for Quantum RF systems, collaborating with cross-functional teams to ensure successful system integration and deliver high-performance solutions.