Senior Test Engineer

asx; Sydney; On-site; AUD 130,000 - 180,000; Full time

Job summary

ASX in Sydney is seeking an experienced QA Test Engineer to validate high-availability trading and market infrastructure systems against multi-protocol interfaces.

You will design and execute test cases, manage test data, identify defects, report quality metrics, and contribute to automation and CI/CD initiatives using employer-provided AI tools.

Qualifications

• 5+ years of experience testing in complex, high-availability systems.
• Experience testing distributed, event-driven, or real-time processing systems.
• Experience with multi-protocol interfaces (FIX, APIs, messaging, file-based).
• Strong SQL and data reconciliation skills.

Responsibilities

• Design, review and execute test cases, scenarios and suites.
• Perform functional, system integration, end-to-end, regression and readiness testing.
• Validate trading workflows, order management and market data processing across interfaces.
• Prepare and manage test data, environments and execution readiness.
• Identify, investigate and track defects to resolution.
• Contribute to test reporting, metrics and release evidence.
• Participate in risk assessments, estimations, and release readiness reviews.
• Contribute to automated testing with vendor tools and internal scripts.

Skills

5+ years testing

Distributed systems

Multi-protocol testing

SQL & data

CI/CD

Jira/Confluence

Tools

Kafka

Git

Python

Selenium

Job description

ASX: Powering Australia's financial markets

Why join the ASX?

When you join ASX, you're joining a company with a strong purpose - to power a stronger economic future by enabling a fair and dynamic marketplace for all. In your new role, you'll be part of a leading global securities exchange with a strong brand. We are known for being a trusted market operator and an exciting data hub.

We are more than a securities exchange!

The ASX team brings together talented people from a diverse range of disciplines. We run critical market infrastructure, with 1 in 3 people employed within technology. Yet we have a unique complexity of roles across a range of disciplines such as operations, program delivery, financial products, investor engagement, risk and compliance.

We're proud to foster a workplace where diversity is celebrated and inclusion is part of our everyday culture. Our employee-led networks champion LGBTIQ+ inclusion, promote gender equality, accessibility and wellbeing, inspire giving and volunteering, and celebrate cultural and religious events, creating a sense of belonging for all. As an AWEI Bronze employer and member of the Champions of Change Coalition for gender equality, we're committed to a fair and inclusive workplace where everyone can thrive.

This role is responsible for validating highly available, mission‑critical trading and market infrastructure systems. The successful candidate will test complex multi‑protocol integrations, real‑time transaction processing workflows, market data distribution services and automated trading interfaces while ensuring the quality, reliability and operational readiness of ASX market technology platforms.

• Design, review and execute test cases, test scenarios and test suites.
• Perform functional, system integration, end‑to‑end, regression, parallel, operational readiness and production verification testing.
• Validate trading workflows, order management and market data processing across applicable interfaces and protocols.
• Prepare and manage test data, environment dependencies and execution readiness activities.
• Identify, investigate, document and track defects through to resolution.
• Provide test execution reporting, quality metrics and release evidence.
• Participate in risk assessments, test planning, estimations and release readiness reviews.
• Contribute to continuous improvement initiatives within the QE&T Community of Practice.
• Learn and use of automation tools which are provided by external vendors and developed internally.
• Design, build and maintain a test automation suite.
• Improve productivity by using employer approved AI tools in test engineering

Must have:

• 5+ years' experience in software testing within complex, mission‑critical, high‑availability systems.
• Experience testing distributed, event‑driven or real‑time transaction processing systems.
• Experience testing systems that communicate using multiple protocols and interfaces, including FIX (Financial Information Exchange), APIs, messaging platforms, file‑based integrations or equivalent.
• Experience analysing message flows, system interactions, and data transformations across integrated platforms.
• Strong system, system integration, end‑to‑end, regression and release testing experience.
• Experience working in highly regulated or operationally critical industries such as Financial Markets, Banking, Payments or similar complex environments.
• Experience investigating and troubleshooting production‑like issues using logs, message tracing, databases and monitoring tools.
• Experience with SQL and reconciliation of large and complex datasets.
• Experience working within CI/CD delivery environments.
• Experience with test automation frameworks, automation strategy and automated test execution.
• Experience using Linux/Unix environments and command‑line tools.
• Experience with Jira, Confluence and modern test management practices.
• Strong stakeholder management and communication skills.

Nice to have:

• Experience testing exchange, clearing, settlement, derivatives or market data platforms.
• Experience within futures, options, equities, fixed income or OTC trading environments.
• Strong knowledge of market protocols such as FIX, ITCH, OUCH, GLIMPSE or FAST.
• Experience testing low‑latency or high‑throughput systems.
• Experience with Kafka, Avro, event streaming and real‑time data distribution architectures.
• Experience in electronic trading, algorithmic trading or market surveillance platforms.
• Understanding of exchange operations, order lifecycle management and market data dissemination.
• Experience with Java or Python development.
• Exposure to cloud‑native architectures, containerisation and modern DevOps practices.
• ISTQB Advanced certification or equivalent.

We make hiring decisions based on your skills, capabilities and experience, and how you'll help us to live o