Senior Software Engineer — C#/.NET & React Backend

LEAP Legal Software, Inc.; Sydney; Hybrid; AUD 140,000 - 190,000; Full time

Benefits offered by this job

Flexible & hybrid working

Catered lunch & breakfast

Weekly massages

Wellbeing day

Gym membership

On-site barista

Job summary

LEAP Dev, part of LEAP Legal Software, is seeking a Senior Software Engineer to join the Core Product team in Sydney. You will work on backend services and web applications, researching and proposing new technologies to build the next generation of products. Hybrid role with flexible arrangements in Sydney.

You’ll design and deliver RESTful APIs, enterprise-grade backend services, and modern frontend components, while collaborating across law and tech experts to streamline client workflows.

Qualifications

• Minimum 5 years of professional software development experience.
• Strong backend development using C# and .NET.
• 3+ years of experience with React or similar frontend frameworks.
• Solid understanding of software architecture and design patterns.
• Experience designing RESTful APIs and relational data models.
• Experience with RESTful API integration and event-driven solutions.

Responsibilities

• Design, develop, and maintain software solutions with a strong focus on backend development (≈70%) using C# and .NET, and frontend (≈30%) with React.
• Design, develop, and maintain RESTful APIs and backend services.
• Develop modern, responsive frontend applications using React.
• Apply best practices: agile, automated testing, code reviews, CI/CD.
• Collaborate with cross-functional teams to translate business needs into scalable solutions.
• Contribute to improving development practices, architecture, tooling, and standards.

Skills

C# & .NET

React

REST APIs

AWS

AI tooling

Tools

Aspose

AWS Lambda

SQS

Aurora MySQL

Microsoft Graph API

Job description

LEAP Dev, part of LEAP Legal Software, is seeking a Senior Software Engineer to join the Core Product team in Sydney. You will work on backend services and web applications, researching and proposing new technologies to build the next generation of products. Hybrid role with flexible arrangements in Sydney.

You’ll design and deliver RESTful APIs, enterprise-grade backend services, and modern frontend components, while collaborating across law and tech experts to streamline client workflows.