Senior Software Engineer II

Human API

Human API

Software Engineering

Sydney, NSW, Australia

Posted on May 26, 2026

Senior Software Engineer – General Device Intelligence

ThreatMetrix is seeking a highly talented and experienced developer to join our end-user facing Device Intelligence team, building software that runs invisibly in mobile apps and web browsers used by millions of people every day across the globe.

About the Business

At ThreatMetrix, a LexisNexis Risk Solutions company, we believe in the power of data and advanced analytics for better risk management. With over 40 years of expertise, we are a trusted data analytics provider for organisations seeking actionable insights to manage risk and improve results while upholding high standards for security and privacy. Headquartered in metro Atlanta, LexisNexis Risk Solutions serves customers in more than 100 countries and is part of RELX Group plc, a world-leading provider of information and analytics for professional and business customers across industries.

About our Team

The ThreatMetrix engineering team is an international team that includes experts in device identification, device intelligence, fraud detection, real-time systems, Software as a Service (SaaS) applications, machine learning, and data analytics. We are an Agile engineering team using concepts such as Scrum, Continuous Integration, self-organising teams, and Continuous Improvement.

About the Position

This role focuses on web technologies, so you should understand the HTTP protocol, how cookies and web sessions work, basic networking concepts, and be a strong programmer. This is not an application-level role and does not involve UI development; instead, it is centred on gathering, sending, and processing data.

The role requires research beyond obvious documentation. We are looking for a C/C++ expert with strong systems-level programming skills, including memory management, concurrency, and performance, while experience with browser JavaScript and Java is also highly valuable.

Personal Skills

  • Clear and effective communicator of technical issues

  • Team player who works effectively with others

  • Detail oriented with a desire to learn, research, and understand

  • Ability to work with geographically dispersed teams

  • Ability to accept criticism and provide feedback (for example, during code reviews)

Technical Skills and Experience

  • C++, Java, and JavaScript

  • Knowledge of programming principles and systems-level programming

  • Threaded and concurrent programming

  • Proficiency in using AI-assisted software development tools, such as GitHub Copilot or coding agents, to improve engineering productivity and code quality

  • Approximately 8 years of experience in C++, ideally combined with 10+ years across Java and C++

  • Experience writing and debugging JavaScript without relying on frameworks

  • Experience with unit testing, code reviews, continuous integration, and source control

  • Web application experience, including a solid understanding of HTTP

Work in a Way That Works for You.

We promote a healthy work/life balance across the organisation, with various flexible and remote working options available to employees.

Working for You

We know that your wellbeing and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer:

  • Discounted health plan rate and optical assistance

  • Life assurance and income protection

  • Option to buy additional annual leave days

  • Employee Assistance Program

  • Flexible working arrangements

  • Benefits for you and your family

  • Access to learning and development resources

LexisNexis Risk Solutions is an equal opportunity employer. Qualified applicants are considered for and treated during employment without regard to any characteristic protected by law. If a qualified individual with a disability or disabled veteran needs a reasonable accommodation to use or access our online system, they should contact the accommodation support channel listed in the application process.

Learn More & Apply

To learn more about opportunities with LexisNexis or RELX:

https://risk.lexisnexis.com/about-us/careers
https://www.relx.com/careers/join-us

We are looking to fill this role as soon as possible – apply now to be considered.

Thank you for your interest.





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