Customer Success Engineer
About the role
We are seeking a highly capable and autonomous Customer Success Engineer to join our growing Customer Success Team (CST). As we are currently ramping up this function, this is a foundational role with significant potential to shape our customer success strategy and step into a leadership position as the team expands. Reporting to the VP of global operations and APAC growth strategy, you will act as the critical interface between our engineering department and our sales team. Operating independently, you will support complex pre-sales engagements, lead technical post-sales implementations, and provide ongoing strategic consulting. Furthermore, you will have the unique opportunity to take on product management tasks, acting as the voice of the customer to directly influence our product roadmap and development cycles.
Key responsibilities
Serve as the technical translator and strategic bridge between the sales organization and the core engineering team, ensuring customer realities inform technical development and vice versa.
Capture field feedback, feature requests, and market trends from customer interactions to help define product requirements and shape the engineering roadmap. Assist in the development of Product Requirement Document – Business Cases, by validating customer driven requirement requests and working with operations and engineering to determine the return-on-investment opportunities and risks.
Partner with the sales team to provide deep technical expertise during the sales cycle, including product demonstrations, technical discovery, and proof-of-concept (PoC) design.
Serve as the primary technical escalation point for deployed solutions, ensuring seamless integration, troubleshooting complex issues, and driving successful technical adoption.
Act as a trusted advisor to our customers, consulting on security architectures, cryptographic implementations, and best practices for their specific environments.
Work hand in hand with the USA based Director of CST in monitoring the effectiveness of process and standards and modifying them to maintain a market leading CST reputation for proactive support and positive outcomes.
About you
Proven background in a technical pre-sales, post-sales, solutions architecture, or highly technical customer-facing engineering role.
Strong background or bachelor's degree in computer science, cybersecurity, or computer engineering.
Demonstrated interest or experience in product management, with a knack for translating customer pain points into actionable engineering requirements.
Strong foundational understanding of applied cryptography.
Experience with enterprise key management, quantum technologies, post-quantum cryptography, or complex security architectures is highly preferred.
Ability to autonomously navigate complex technical environments, troubleshoot integrations, and design effective solutions.
Exceptional ability to translate complex technical concepts to both engineering teams and executive stakeholders.
Ability to pick up the phone and talk to colleagues, vendors and customers as well as present demonstrations in person and online in a confident manner.
Self-starter mentality, comfortable navigating the ambiguity of a ramping team and building processes from the ground up.
Australian citizen or permanent resident. The ability to hold an Australian security clearance is advantageous.
About us
Founded in Canberra in 2008 as Australia's first quantum technology company, QuintessenceLabs delivers quantum-resilient cybersecurity solutions that protect sensitive data, critical infrastructure, and national security interests. Our solutions help organizations reduce cryptographic risk and adapt to changing security requirements through a unified platform for crypto-agility and quantum resilience. From continuous cryptographic visibility and automated remediation to PQC readiness assessments, quantum random number generation, quantum key distribution, and crypto-agile security architectures, QuintessenceLabs enables organizations to protect against today's threats while preparing for evolving cryptographic requirements.
Application guidance
For further information about the role, please email careers@quintessencelabs.com , subject line “role inquiry - CS Engineering Australia”
Applications must include a cover note and concise resume. Email applications can be submitted to careers@quintessencelabs.com , subject line “Application - CS Engineering Australia”
Initial interviews will commence from October 14th, 2026.