Staff Software Engineer - .NET / React - AWS & Microservices We're looking to add a Staff Software Engineer to a high‑performing team. This role operates very similarly to a Technical Lead , but with a stronger focus on technical depth , architecture , and ownership , rather than people management. As a Staff Software Engineer, you will be a senior technical authority across core customer-facing and internal systems. Expect to work across the full stack and own major architectural decisions while delivering hands‑on engineering outcomes. You will: Lead the architecture, design, and delivery of complex software systems and refactor major technical components. Build and enhance microservices with Event‑Driven Architecture across high‑scale FinTech platforms. Drive technical initiatives and lead projects end‑to‑end, strong technical depth is key. Solve ambiguous, high‑impact engineering challenges while maintaining long‑term technical health. Mentor senior engineers and uplift engineering capability across your domain. Get exposure to data platforms, DevOps, observability, and AI‑driven initiatives. This role is perfect for engineers who enjoy operating as a hands-on technical leader , owning architecture while still writing high‑quality code. Tech Stack & Engineering Environment C# / .NET & React (Or another Javascript framework) AWS experience (highly beneficial) Microservices & Event‑Driven Architecture Understanding of Distributed Systems and Domain‑Driven Design Familiarity with infrastructure, DevOps, CI/CD Nice to have's SQL Server / PostgreSQL expertise Experience with TDD, BDD, SOLID principles Focus on maintainability, performance & clean architectural patterns Why This Role? Join a high‑growth, high‑impact, engineering‑focused ASX FinTech Real ownership across the full SDLC, build it, run it, improve it Work closely with senior leadership and shape long-term platform strategy Career pathways into Principal Engineer / Architecture / Domain Lead Exposure to modern cloud, data, and AI initiatives at scale Work with smart engineers in a collaborative, lean environment If you're a senior, hands‑on engineer who wants real scale, real ownership and a role with both depth and influence - this is for you. Apply now via seek, or email me directly at josh.kitchin@profusiongroup.com to set up a confidential chat.