--- title: 'Senior Compiler Engineer at Q-CTRL' canonical: 'https://feeny.ai/job/senior-compiler-engineer-q-ctrl-los-angeles-k4y8j5ryy9mj' type: 'job' last_seen: '2026-09-07' --- # Senior Compiler Engineer at Q-CTRL - **Company:** Q-CTRL - **Location:** Los Angeles, CA - **Employment:** full-time - **Work type:** hybrid - **Posted:** 2025-10-09 - **Last confirmed live:** 2026-09-07 - **Apply:** https://jobs.lever.co/q-ctrl/7776f14b-e3c0-466b-9103-8b4c0a1a7278 ## Job description ## About the team At Q-CTRL, Quantum Computing Engineering is a global team of software engineers and infrastructure experts,combining deep technical expertise with a startup mindset to deliver real impact through software innovation. Our work is underpinned by robust standards, and by embracing the three virtues. Our team excels in areas across back-end, front-end, machine learning, and platform engineering. We transform Q-CTRL’s world-leading technological breakthroughs into commercial software products with applications across defense, research, and industry. We work closely with Product, Design, and Research teams to accelerate the path to quantum advantage worldwide. ## About the role As a Senior Software Engineer on the Boulder Opal team, you will lead the design and evolution of the compiler that powers next-generation quantum computing systems. Working closely with researchers and quantum engineers, you will bridge the gap between quantum algorithms and physical hardware by building a high-performance compiler capable of translating pulse-level programs into controller instructions. This is a hands-on senior engineering role for someone with deep compiler expertise who enjoys solving challenging systems problems and influencing technical direction. What you'll be doing: - Design, implement and optimise compiler infrastructure, intermediate representations, optimisation passes and code generation. - Maintain and evolve our bespoke Python DSL used by researchers to construct pulse-level quantum programs. - Build high-performance software using Python and C++. - Work closely with researchers to translate experimental algorithms into production-quality compiler capabilities. - Run experiments on quantum hardware to validate compiler outputs end-to-end. - Influence technical direction, mentor other engineers and drive engineering best practices. Ideally you'll have: - Strong proficiency in Python and C++. - Experience with LLVM, particularly MLIR. - Experience implementing language tooling, parsers or DSLs. - Significant experience designing production compiler systems. - Experience with compiler architectures, intermediate representations, optimisation passes and code generation. - Strong understanding of systems programming and software architecture. It would be fantastic (but not essential) if you bring: - Experience with quantum control systems or pulse-level programming. - Experience with experimental characterisation of superconducting or semiconductor spin qubits. - Experience with RF signal processing concepts such as IQ modulation. - Experience using laboratory instrumentation (AWGs, digitisers, oscilloscopes, SCPI-controlled instruments). - Experience with FPGA development (Verilog, VHDL or HLS). SalaryThe base salary for this position is targeted between $135,000 - $210,000 and will ultimately be determined by specific job-related skills, experience, level, location and other contributing factors. Depending on the position offered, this role may be eligible for annual discretionary bonuses, equity and other forms of compensation outside of the targeted range. For more information on benefits at Q-CTRL, please visit our careers page at https://q-ctrl.com/careers. Should you have any questions related to the compensation package, please speak directly with the Talent Acquisition representative. ## About Q-CTRL Q-CTRL is the global leader in AI-powered quantum control infrastructure software. We build the tools that make quantum technology useful, solving the hardest challenges in quantum computing and quantum sensing to deliver real-world impact. Founded in 2017, we operate globally with offices in Sydney, Los Angeles, San Francisco, Berlin, and Oxford. Our teams bring together technical and multi-disciplinary expertise across the product lifecycle, and we’re hiring talent to help scale every part of the business. We work quickly to turn cutting-edge science into deployable technology. In 2024 we raised US$113 million in Series B funding, the largest aggregate investment for a quantum software company. Six months later we delivered the first commercial quantum advantage with Ironstone Opal, our field-validated quantum navigation solution for defense and industry. At Q-CTRL, we prioritize outcomes over hours. We offer flexibility, equity potential, and competitive benefits that reflect our high-performance culture. If you’re ready to help shape the future of quantum, we’d love to hear from you! Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Please be advised that our communications will only come from the @q-ctrl.com domain. All our active job postings are available on our company website. To recruitment agencies, we do not accept unsolicited branded profiles and are not responsible for any fees related to unsolicited resumes. ## About Q-CTRL ## Company Overview - **One-liner**: Q-CTRL builds AI-powered infrastructure software to make quantum technology useful today, delivering performance gains in quantum computing and quantum sensing for enterprise, government, and defense. - **Entity Type**: Private (Privately held; $133M total funding across 12 rounds, including seed and venture rounds) - **Headquarters**: Sydney, Australia - **Founded**: 2017 - **Founders**: Not publicly available ## Core Business - **Primary industry**: Quantum technology infrastructure software, AI-for-quantum, quantum computing and quantum sensing - **Target customers**: Enterprise and government organizations, data center and HPC providers, defense and aerospace, learners and researchers (B2B, B2G) - **Mission or purpose statement**: “We make quantum technology useful” – bridging the gap between quantum hardware and real-world applications through AI-driven control software. ## Products & Services - **Boulder Opal**: AI-powered quantum computing infrastructure software that provides error suppression, automated calibration, performance management, and compilation tools to maximize qubit utility. - **Ironstone Opal**: Quantum sensing solutions for GPS-denied navigation, delivering the first true quantum advantage in real-world navigation scenarios. - **Educational & Workforce Tools**: Interactive learning platforms and professional toolkits for students, researchers, and hardware teams to upskill and accelerate quantum adoption. ## Market Standing - **Valuation/Market Cap**: Not disclosed - **Key Metric**: Annual revenue of $5M (LinkedIn estimate); total funding of $133M (as of latest rounds) - **Notable Investors/Partners**: Horizons Ventures, Main Sequence Ventures, DCVC, HSG, IQT (led various rounds) - **Growth Signals**: Headcount of 176 employees (+36.7% YoY); LinkedIn followers 30,064 (+40.3% yearly); global expansion to six offices (Sydney, Santa Monica, Huntsville, Oxford, San Francisco, Berlin); multiple open positions across engineering, research, product, and sales. ## Competitive Advantages - Unique AI-for-quantum approach that directly addresses hardware error and instability – the toughest problems in quantum technology. - Proven world records in quantum computer performance and first demonstration of quantum advantage in GPS-free navigation. - Deep expertise in quantum control, compilation, and error correction, combined with proprietary infrastructure software that no competitor replicates. - Strong government and defense relationships, with solutions tailored for the most demanding environments. ## Strategic Focus - Scale adoption of quantum computing and sensing across enterprise and government by making the technology useful today. - Continue to invest in AI-driven automation and compilation to lower barriers for non-experts. - Expand into data center and HPC integration, providing pre-validated architectures for seamless quantum utility. - Grow workforce and global footprint to meet increasing demand from defense, aerospace, and research sectors. ## Why Work Here - **Culture highlights**: Multidisciplinary teams united by curiosity and ambition; collaborative environment focused on real-world impact; strong emphasis on personal development and career growth. - **Remote/hybrid/office policy**: Hybrid model (e.g., roles in Los Angeles, San Francisco listed as hybrid); flexible workplace policies; offices in six cities across three continents. - **Notable perks**: Highly competitive, innovative, and inclusive benefits; comprehensive personal development programs; streamlined interview process with technical discussions and cross-functional collaboration. - **Engineering culture**: Work on cutting-edge quantum control, AI, and infrastructure software; teams span engineering, research, product, and design. - **Employer rating**: 4.6/5.0 on LinkedIn (15 reviews), with 4.9 for work-life balance and culture, 4.6 for compensation, 4.7 for career opportunities. ## Sources 1. [q-ctrl.com](https://q-ctrl.com/) – Company overview and product descriptions 2. [q-ctrl.com/careers](https://q-ctrl.com/careers) – Careers page, culture, interview process, locations 3. [q-ctrl.com/about](https://q-ctrl.com/about) – About page, AI-for-quantum focus 4. [jobs.lever.co](https://jobs.lever.co/q-ctrl) – Open positions (Senior Software Engineer, Scientist, etc.) 5. [linkedin.com](https://www.linkedin.com/company/q-ctrl) – Company details, revenue, funding, headcount, reviews ## Other roles at Q-CTRL - [Software Engineer](https://feeny.ai/job/software-engineer-q-ctrl-san-francisco-pvzvz3152f4p) — San Francisco, CA - [Q-CTRL Talent Community](https://feeny.ai/job/q-ctrl-talent-community-q-ctrl-huntsville-jzv8ca0jmc42) — Huntsville - [Senior Scientist, Quantum Sensing (Atom Interferometry)](https://feeny.ai/job/senior-scientist-quantum-sensing-atom-interferometry-q-ctrl-sydney-etth5enrdb72) — Sydney, Australia - [Q-CTRL Talent Community](https://feeny.ai/job/q-ctrl-talent-community-q-ctrl-san-francisco-n1g4e3xpme12) — San Francisco, CA - [Q-CTRL Talent Community](https://feeny.ai/job/q-ctrl-talent-community-q-ctrl-oxford-z4tkh9rmpngz) — Oxford - [Q-CTRL Talent Community](https://feeny.ai/job/q-ctrl-talent-community-q-ctrl-berlin-c20qvj3dhjnm) — Berlin, Germany - [Q-CTRL Talent Community](https://feeny.ai/job/q-ctrl-talent-community-q-ctrl-sydney-1qpd0gb2f2mb) — Sydney, Australia - [Q-CTRL Talent Community](https://feeny.ai/job/q-ctrl-talent-community-q-ctrl-los-angeles-p59vbyns6j2h) — Los Angeles, CA - [Senior Compiler Engineer](https://feeny.ai/job/senior-compiler-engineer-innatera-nanosystems-rijswijk-nvw9bbqscebk) — Rijswijk, Netherlands - [Senior Compiler Engineer](https://feeny.ai/job/senior-compiler-engineer-efficient-computer-san-jose-jvy9jasfvy20) — San Jose, CA / Pittsburgh, PA / San Francisco, CA