Contract: 6 months initial, likely to extend

Location: Sydney CBD (Hybrid – approx. 50% in office)

Sector: Financial Services / Technology

Your Current Company A leading Australian financial services organisation is undertaking a major technology uplift, building contemporary, cloud‑native platforms that support high‑volume, business‑critical financial transactions. You’ll be joining a fully onshore engineering team working on greenfield initiatives with real scale and impact.

Your New Role

We are seeking an experienced Senior .NET Engineer to join a cooperative engineering squad contributing to the greenfield build of a new settlements platform .

This role is well suited to either a full‑stack engineer (React + backend) or a backend/API‑focused engineer with strong .NET experience. You will work closely with Product Owners and Engineers based locally and can flex across multiple areas of the platform depending on your strengths.

What You’ll Be Doing
Designing and building scalable, resilient systems for a new settlements platform
Developing backend services and APIs using .NET
Contributing to frontend functionality using React (where applicable)
Working within an AWS environment, including Postgres and AuroraDB
Applying DevSecOps principles within a “build it, ship it,



own it, operate it” model
Building and maintaining automated tests to ensure high-quality delivery
Collaborating with Product Owners and Engineers, including team members with strong business analysis capability
Contributing to other platform components with a balanced split between frontend and backend responsibilities

What You’ll Need to Succeed
Strong commercial experience with .NET
Full‑stack experience with React , or strong backend engineering capability
Proven experience building and consuming APIs
Hands-on AWS experience, including Postgres and AuroraDB
Strong understanding of resilient, scalable, distributed systems
Demonstrated DevSecOps mindset with end-to-end service ownership
Experience with test automation
Strong communication skills and ability to work effectively in a collaborative, onshore team

What You’ll Get in Return
Opportunity to work on a greenfield, enterprise‑scale platform
Initial 6‑month contract with solid likelihood of extension
Hybrid working model in a Sydney CBD location
High‑performing, locally based engineering team
Exposure to modern engineering practices and cloud‑native architecture

📌 Senior Net Developer Fullstack Sydney
🏢 Hays
📍 Sydney