Full Stack Developer - Java and AI

FinXL IT Professional Services; Sydney; On-site; AUD 100,000 - 140,000; Full time

Job summary

FinXL IT Professional Services – Sydney CBD NSW is seeking a Full Stack Developer to join the team and drive architectural uplift, build complex wealth calculation engines and modernise legacy platforms into a scalable, cloud-native ecosystem.

The role requires hands-on experience across front-end and back-end technologies, strong API design, microservices, and the ability to mentor mid-level engineers while leveraging AI productivity tools.

Qualifications

• Full stack engineering experience in enterprise apps.
• Proficient in Java, React, MongoDB and JBoss.
• Experience using AI productivity tools (GitHub Copilot / Claude).
• Experience in Financial Advice, Wealth Management or BFSI.
• Experience with XPLAN, Endeavour or Midwinter.
• Design & develop robust back-end services and responsive front-ends.
• Write clean, secure, scalable code; leverage AI tools.
• APIs integration and microservices architectures.
• Mentor mid-level engineers and provide tech leadership.

Responsibilities

• Drive architectural uplift and modernise legacy platforms.
• Build complex wealth calculation engines.
• Develop a cloud-native ecosystem.
• Mentor junior engineers and lead technical discussions.

Skills

Full stack development

API design & microservices

Technical leadership

Tools

Java

React

MongoDB

JBoss

GitHub Copilot

Claude

Job description

FinXL IT Professional Services – Sydney CBD NSW

Contract

18d ago , from FinXL IT Professional Services

FinXL by Randstad Digital focuses on accelerating client's infrastructure, digital and AI transformation journeys by providing specialised skills, managed programs and strategic consulting across various industries.

We solve complex technological and business challenges with highly talented people.

We are currently seeking a Full Stack Developer to join FinXL and drive the architectural uplift, build complex wealth calculation engines and modernise legacy platforms into a scalable, cloud-native ecosystem.

Skills and Experience

• Full Stack Engineer experience
• Experience in Java, React, MongoDB and JBoss
• Experience utilising AI productivity tools like GitHub Copilot or Claude
• Experience in Financial Advice, Wealth Management - Superannuation-Insurance or BFSI
• Experience in XPLAN, Endeavour or Midwinter
• Experience designing & developing robust back-end services and responsive front-end interfaces
• Experience writing clean, secure, and scalable code and leveraging AI productivity tools
• Experience integrating APIs and working within microservices architectures
• Experience mentoring mid-level engineers and providing technical leadership