Senior Software Engineer, Backend - IAM & Account Infra About AirwallexAirwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 200,000 businesses worldwide – including Brex, Rippling, Navan, Qantas, SHEIN and many more – with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale.Proudly founded in Melbourne, we have a team of over 2,000 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career, join us.Attributes We ValueWe hire successful builders with founder-like energy who want real impact, accelerated learning, and true ownership. You bring strong role-related expertise and sharp thinking, and you’re motivated by our mission and operating principles. You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor.You're humble and collaborative; turn zero‑to‑one ideas into real products, and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here, you’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let’s build what’s next.The Opportunity: Be Part of Our IAM & Account Infra TeamBecome an integral part of our Identity and Access Management (IAM) and Account team, where you will play a critical role in advancing our identity solutions and fortifying our account infrastructure. We are on the lookout for passionate engineers driven to work on cutting-edge projects that enhance the availability, scalability, and security of our platform. Engage in global collaboration with product managers, designers, and fellow engineers to deliver exceptional IAM solutions that safeguard businesses and optimize our account infrastructure for Airwallex's exponential growth.What You'll DoStrategic Leadership & Roadmap:Technical Strategy: Define the long-term technical vision and architectural strategy for Airwallex’s Identity (IAM) and account infrastructure domains. Make high-level decisions and select technology stacks that support long-term scalability.Roadmap Planning: Partner closely with Product Managers and Engineering Directors to translate business goals into a concrete technical roadmap. Prioritize initiatives based on risk, commercial value, and engineering bandwidth.Cross-Functional Alignment: Act as the technical bridge between Engineering, Legal, Compliance, and Security teams to ensure our technical roadmap aligns with global regulatory changes.Engineering & Architecture:System Design & Development: Design, develop, and maintain high-availability (HA) IAM products and account infrastructure using Java/Kotlin and cloud-native technologies.Security Engineering: Implement industry-standard security protocols (e.g., OAuth2, OIDC, SAML) to safeguard business data and ensure compliance with global financial regulations.Infrastructure Optimization: Architect and optimize scalable infrastructure solutions to support high transaction volumes and ensure system reliability.Code Quality & Excellence: Champion engineering excellence by conducting code reviews, writing automated tests, and establishing best practices for performance and security.Team Leadership & Mentorship:Coaching & Development: Mentor junior and senior engineers through code reviews, design docs, and career guidance. Foster a culture of engineering excellence and ownership within the team.Best Practices: Establish and enforce standards for code quality, security, and system reliability. Drive technical initiatives that improve developer velocity and system observability.Who You AreEducation: Bachelor’s Degree or higher in Computer Science, Engineering, Information Technology, or a related field.Experience: 6 years of professional experience in software engineering, with a focus on backend developmentTechnical Proficiency:Strong proficiency in modern programming languages such as Java, Kotlin, Go, or Python.Deep understanding of Identity and Access Management (IAM) concepts (Authentication, Authorization, SSO, MFA).Experience with cloud platforms (AWS, GCP, or Azure) and containerization technologies (Docker, Kubernetes).Solid knowledge of relational and non-relational databases (e.g., PostgreSQL, Cassandra, Redis).Leadership: Demonstrated experience in mentoring engineers and leveling up team capabilities.Security Knowledge: Familiarity with application security best practices and secure coding standards (OWASP).Preferred Qualifications (Good to have):Experience in the Fintech, Banking, or Payments industry.Experience with data governance tools or privacy-enhancing technologies (PETs).Experience working in a high-growth startup or unicorn environment.Why Join UsEngineering Culture: Immerse yourself in a supportive and dynamic engineering culture that values innovation, collaboration, and excellence. You’ll have the opportunity to contribute to an environment that encourages continuous learning, creativity, and the sharing of ideas.Grow With Us: At Airwallex, we're committed to your professional development. You'll have opportunities to learn, grow, and shape your career path in a fast-paced, innovative environment.Collaborate With the Best: Work with a team of talented and passionate individuals who are driven by the desire to create something extraordinary.Applicant Safety Policy: Fraud and Third-Party RecruitersTo protect you from recru