.NET / React Full Stack Developer (Mid–Senior)

Borger Crane Hire & Rigging Services; Blacktown City Council; On-site; AUD 110,000 - 140,000; Full time

Job summary

Unknown Enterprise is seeking a mid–senior .NET / React Full Stack Developer to join our technology team for a greenfields build. You will focus on writing high-quality code, ensuring AI-assisted development workflow integrity, and maintaining a production-grade codebase.

You will collaborate with a development team across a full .NET and React stack, backed by PostgreSQL and Azure-hosted infrastructure. The role emphasizes code quality, security, and scalable design in an AI-enabled environment.

Qualifications

• 5–15 years of professional .NET / C# development delivering production-grade systems.
• Strong full-stack development with React front-ends, APIs, business logic, and data access layers.
• Hands-on React with hooks, component design, and state management.
• Proficiency with EF Core and relational database development (PostgreSQL preferred).
• RESTful API design and integration experience.
• Demonstrated experience with automated testing and a genuine commitment to test-driven culture.
• Experience with CI/CD pipelines, preferably GitHub Enterprise Cloud.
• Comfortable working in an AI-assisted development environment — reviewing, validating, and refining AI-generated code.
• Prior experience on greenfields enterprise builds.

Responsibilities

• Develop high-quality .NET / C# applications following clean architecture principles.
• Build responsive front-end components with React.
• Implement data access with EF Core for PostgreSQL and expose REST APIs.
• Review AI-generated code for correctness, security, and performance.
• Write and maintain automated tests across the stack and uphold CI/CD quality gates.
• Collaborate with architect, BA, and developers to deliver requirements.
• Maintain coding standards across a greenfields codebase.

Skills

.NET / C# development

Full-stack React & APIs

React hooks & state

EF Core & PostgreSQL

RESTful API design

Automated testing / TDD

CI/CD pipelines (GitHub EC)

AI-assisted code review

Greenfields enterprise builds

Tools

GitHub Enterprise Cloud

Job description

.NET / React Full Stack Developer (Mid–Senior)

We are an enterprise organisation seeking an experienced .NET / React Full Stack Developer to join our technology team on an exciting greenfields build. Working from well-defined requirements provided by a dedicated architect and business analyst, you will focus purely on what you do best — writing high-quality code and ensuring the integrity of our AI-assisted development workflow.

This is a modern development environment where AI tooling is used extensively to accelerate delivery. Your role will be central to maintaining code quality, reviewing AI-generated output for correctness, security, and compliance, and ensuring the codebase remains clean, consistent, and production-grade.

You will work closely with a collaborative development team across a full .NET and React stack, building enterprise-grade applications backed by a robust PostgreSQL and Azure-hosted infrastructure.

Key Responsibilities

• Develop high-quality .NET / C# applications following clean architecture principles (DAL, business logic, services)
• Build responsive, component-based front-end applications using React
• Implement data access layers using Entity Framework Core against PostgreSQL
• Build and integrate RESTful APIs as part of the broader enterprise system
• Review AI-generated code critically — assessing correctness, security, performance, and adherence to architectural standards
• Write and maintain automated tests across the full stack, upholding a strong test culture throughout the codebase
• Work within GitHub Enterprise Cloud CI/CD pipelines, ensuring code quality gates and deployment standards are met
• Collaborate closely with fellow developers, the project architect, and business analyst to deliver against requirements
• Maintain clear, consistent coding standards across a greenfields codebase

Required Skills & Experience

• Must Have
• 5–15 years of professional .NET / C# development experience delivering production-grade systems
• Strong experience with full-stack development — React front-ends, APIs, business logic, and data access layers
• Solid hands-on experience with React, including hooks, component design, and state management
• Proficiency with Entity Framework Core and relational database development (PostgreSQL preferred)
• Solid RESTful API design and integration experience
• Demonstrated experience with automated testing and a genuine commitment to test-driven culture
• Experience with CI/CD pipelines, preferably GitHub Enterprise Cloud
• Comfortable working in an AI-assisted development environment — reviewing, validating, and refining AI-generated code
• Highly Regarded
• Prior experience on greenfields enterprise builds

What We Offer

• Permanent, full-time on-site role with long-term stability
• Modern, AI-assisted development environment with cutting-edge tooling
• Greenfields project — build something from the ground up, the right way
• Collaborative team with a dedicated architect and BA — you focus on code, not meetings
• Supportive workplace with opportunities for professional development

Work Rights: To be considered for this role, you must be an Australian Citizen, Permanent Resident, or hold a valid work visa with full working rights. We are unable to offer visa sponsorship.