.NET Developer & React Developer - 12 months - Immediate Start

FinXL IT Professional Services; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

FinXL IT Professional Services in Sydney is seeking a senior .NET and React Developer to join our consulting team and be deployed with a leading government client on a major transformation program.

You will develop, review, and deploy scalable .NET and React web applications, drive technical design, coach peers, and ensure solutions meet architecture, security, and accessibility standards while adopting Claude Code across the SDLC.

Qualifications

• 7+ years of commercial experience delivering complex, production-grade applications.
• Advanced hands-on experience with C#, .NET / ASP.NET Core, React, and REST APIs.
• Advanced experience using and governing AI-assisted tools such as Claude Code.
• Strong knowledge of software architecture, design principles, and solution patterns.
• Proven experience with code reviews, automated testing, Git, CI/CD, and DevOps.
• Demonstrated technical leadership in Agile delivery, planning, and risk management.
• Australian citizenship and eligibility for Baseline security clearance.

Responsibilities

• Develop, unit test, and deploy scalable .NET and React web applications.
• Lead technical design, code reviews, proofs of concept, and reusable patterns.
• Drive the adoption and governance of Claude Code across the SDLC.
• Translate business and technical requirements into compliant solution designs.
• Ensure solutions meet architecture, WCAG accessibility, security, and privacy standards.
• Lead the resolution of complex performance, integration, and production issues.
• Provide technical leadership, mentoring, and coaching to fellow developers.

Skills

C#

.NET

React

REST APIs

AI-assisted Claude Code

Software architecture

Git

CI/CD

DevOps

Agile delivery

Tools

Claude Code

Git

CI/CD tooling

Job description

FinXL IT Professional Services – Sydney NSW

Contract

24h ago , from FinXL IT Professional Services

FinXL Professional Services is a leading IT consultancy that partners with clients to bridge the gap between business needs and technology capabilities. Since 2003, we've been delivering high-value ICT services across government, finance, telecommunications, and enterprise sectors.

FinXL is seeking a .NET and React Developer to join our consulting team and be deployed with a leading government client on a key transformation engagement.

Responsibilities

• Develop, unit test, and deploy scalable .NET and React web applications.
• Lead technical design, code reviews, proofs of concept, and reusable patterns.
• Drive the adoption and governance of Claude Code across the SDLC.
• Translate business and technical requirements into compliant solution designs.
• Ensure solutions meet architecture, WCAG accessibility, security, and privacy standards.
• Lead the resolution of complex performance, integration, and production issues.
• Provide technical leadership, mentoring, and coaching to fellow developers.

Key Skills & Experience

• 7+ years of commercial experience delivering complex, production-grade applications.
• Advanced hands-on experience with C#, .NET / ASP.NET Core, React, and REST APIs.
• Advanced experience using and governing AI-assisted tools such as Claude Code.
• Strong knowledge of software architecture, design principles, and solution patterns.
• Proven experience with code reviews, automated testing, Git, CI/CD, and DevOps.
• Demonstrated technical leadership in Agile delivery, planning, and risk management.
• Australian citizenship and eligibility for Baseline security clearance.

Why Join FinXL?

• Work with a leading government client on major digital transformation
• Flexible consulting engagement supported by FinXL's specialist team
• Lead modern .NET, React, and AI-assisted development practices