Senior Developer (Java & Python) (City of Sydney)

What’s the role? Are you passionate about building great software, refining engineering practices, and helping others do their best work? We’re looking for a Senior Developer to help shape and deliver exceptional developer experiences across Westpac. You’ll join a polyglot engineering team building The Westpac Mesh —a digital platform that enables developers to easily discover, build, deploy, and run future‑ready applications. This includes creating AI‑enabled tooling and agentic workflows that reduce toil, improve productivity, and support high‑quality software delivery. Alongside hands‑on engineering, you’ll help set technical direction and mentor others in building great software. Responsibilities
- Building high‑quality software that delights a large internal developer community
- Designing and improving developer platforms, tools, libraries, and build processes
- Developing AI‑enabled developer tooling such as search, summarisation, and copilots, with strong evaluation, observability, security, and guardrails
- Implementing agentic workflows to safely automate repetitive engineering tasks (with human‑in‑the‑loop where required)
- Shaping the technical direction of products and mentoring junior engineers
- Identifying and helping remove technical and delivery impediments
- Contributing to and fostering a vibrant technical community Qualifications
- Over 5 years experience as a polyglot software engineer.
- Strong experience building APIs and microservices in Java , with exposure to Node.js or Python .
- Experience integrating AI capabilities into platforms , including agentic patterns, tool use, and workflow orchestration.
- Desirable to have an understanding of public cloud platforms (Azure and/or AWS).
- Familiarity with SaaS technologies such as Kafka or MongoDB (desirable).
- Practical experience applying AI/LLMs in production environments (e.g. RAG, prompt/tool design, model integration), including testing and responsible AI practices (desirable). Why join us?
- Special offers on banking products and discounts from top brands, including generous employee-only mortgage rates.
- Versatile work arrangements to help you achieve a greater work/life balance, and a variety of leave options including Culture, Lifestyle and Wellbeing leave.
- Tailored learning and development opportunities to help you grow your career within the bank.
- Lots of opportunities to ‘give back’ to the Community by getting involved in our many volunteering initiatives. We’re all about creating a supportive and inclusive community. We welcome everyone – no matter your age, gender, background, or abilities. We also provide additional support to welcome our veterans, Indigenous Australians and neurodiverse community. To get started, simply click on the APPLY or APPLY NOW button. #J-18808-Ljbffr Apply on Kit Job: kitjobau.com/job/3rufc9