---
title: 'Security Engineer at Q-CTRL'
canonical: 'https://feeny.ai/job/security-engineer-q-ctrl-sydney-j1wqh1nct9z0'
type: 'job'
last_seen: '2026-10-31'
---

# Security Engineer at Q-CTRL

- **Company:** Q-CTRL
- **Location:** Sydney, Australia
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-10-29
- **Last confirmed live:** 2026-10-31
- **Apply:** https://jobs.lever.co/q-ctrl/ad82ad19-2d01-4c4b-89a7-4c02ad1ec2ef

## 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

The Q-CTRL Infrastructure team is part of the backbone of our software platform and hardware initiatives. Guided by our vision to make the right way the easy way, our mission is to build reliable, secure and maintainable infrastructure that enables Q-CTRL to scale its revolutionary quantum technology. Q-CTRL faces a dynamic security landscape shaped by industry, customer and compliance requirements, which is now evolving in a post-Mythos era. The Infrastructure team is expanding to bring on a Senior Security Engineer with a focus on designing, implementing, and maintaining systems to fulfil the Q-CTRL Security Objectives, as well as identifying practical ways to leverage AI within our security engineering practices.

What you’ll be doing:

- Reporting to the Engineering Manager for Infrastructure, you’ll play a hands-on role in ensuring we deliver the highest security standards for Q-CTRL products and maintain the trust our customers place in us.
- Strengthening the security of the Q-CTRL platform through contribution to key systems such as Kubernetes clusters, cloud networking, Zero Trust network architectures and firewalls.
- Consistently upholding compliance with security frameworks through the improvement of systems and processes. This includes access control mechanisms, data management and security guardrails.
- Applying knowledge in forensics and incident response to triage incidents and applying expertise to improve alerting.
- Refining and maturing our vulnerability management systems in order to improve key security metrics for Q-CTRL.
- Other duties within the Employee's skills and experience, or with reasonable training.

Ideally you’ll have:

- Previous experience in DevSecOps or DevOps with a dedicated security engineering focus.
- Cloud networking and Kubernetes experience, including knowledge of ZTNA and secure network access.
- Experience with firewall technologies, at both the cloud (e.g., AWS, GCP, Azure) and application levels.
- Experience working with SIEM/SOC tooling such as Splunk or Microsoft Sentinel to identify and triage security alerts.

It would be fantastic if you have these skills/experience but not essential:

- xperience maintaining a vulnerability management system, including running threat modelling sessions and maintaining risk registers.
- Experience with Kubernetes runtime security tooling such as Falco or Sysdig.
- Relevant security or Kubernetes certifications, such as Certified Kubernetes Security Specialist (CKS) or Offensive Security Certified Professional (OSCP).
- Experience with AI-assisted security scanning or penetration testing.
- Red teaming experience, particularly within cloud or AWS environments.
- Experience using open-source observability tooling such as OpenTelemetry and Grafana to set up security alerting and monitoring.
- Hands-on experience hardening Linux operating systems and container images.

## 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, Huntsville, 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!

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

- [Production Technician](https://feeny.ai/job/production-technician-q-ctrl-sydney-ge5ystyqqtkw) — Sydney, Australia
- [Staff Embedded Software Engineer](https://feeny.ai/job/staff-embedded-software-engineer-q-ctrl-sydney-24dhbapw7cjk) — Sydney, Australia
- [Senior Systems Technician](https://feeny.ai/job/senior-systems-technician-q-ctrl-sydney-ys9g35p9fh4x) — Sydney, Australia
- [Senior Strategic Sourcing Specialist - Talent Acquisition](https://feeny.ai/job/senior-strategic-sourcing-specialist-talent-acquisition-q-ctrl-los-angeles-r0sbftd1nne7) — Los Angeles, CA
- [Senior Scientist, Quantum Sensing (Magnetometry)](https://feeny.ai/job/senior-scientist-quantum-sensing-magnetometry-q-ctrl-sydney-8a7j4g15sca5) — Sydney, Australia
- [Product Manager - Quantum Sensing](https://feeny.ai/job/product-manager-quantum-sensing-q-ctrl-sydney-pd7stsf5k98n) — Sydney, Australia
- [Director of US Government Engagement](https://feeny.ai/job/director-of-us-government-engagement-q-ctrl-washington-raqqdx0q8fx9) — Washington, DC
- [Staff Research Scientist — Quantum Algorithms & Fault-Tolerant Applications](https://feeny.ai/job/staff-research-scientist-quantum-algorithms-fault-tolerant-applications-q-ctrl-6nb5s7jyk4g9) — Los Angeles, CA
- [Senior Scientist, Quantum Sensing (Modeling and Control)](https://feeny.ai/job/senior-scientist-quantum-sensing-modeling-and-control-q-ctrl-sydney-qhh5h4xt93fq) — Sydney, Australia
- [Senior Cloud Platform Engineer](https://feeny.ai/job/senior-cloud-platform-engineer-q-ctrl-los-angeles-94rsh6dmsjb3) — Los Angeles, CA