Senior Frontend Engineer - React/Next.js Leader

CoStar Group, Inc.; City of Melbourne; On-site; AUD 150,000 - 210,000; Full time

Job summary

CoStar Group, Inc. is seeking a Senior Software Engineer to drive frontend architecture and deliver scalable UI features using React, TypeScript, and Next.js. You will mentor junior engineers, shape technical direction, and align work with security and domain standards.

The role emphasizes performance, reliability, and collaboration with cross-functional teams in a dynamic environment, including Cloud and DevOps practices.

Qualifications

• Degree in Computer Science / Software Engineering or related field.
• Deep expertise in ReactJS, JavaScript, TypeScript, and Next.js.
• Strong understanding of modern architectural patterns, including Micro frontends, SPA, and SSR.
• Familiarity with GraphQL, including experience adding and modifying queries and mutations.
• Hands-on experience leveraging AI coding assistants to improve engineering productivity and code quality.
• Experience designing software solutions built for high scale and high traffic websites.
• DevOps practices, CI/CD, and infrastructure-as-code.
• Strong practical experience with AWS cloud services, including ECS, Lambda, and CloudWatch.
• Familiarity with containerization technologies like Docker.
• Experience working effectively within Agile environments.
• Security: Familiarity with modern Application Security Practices (OWASP).
• Certifications: AWS, Azure, or GCP Certification.

Responsibilities

• Responsible for the entire lifecycle of medium-sized projects: engineering design, development, test, production, and deployment and subsequent fixes and improvements.
• Finds solutions to unsolved, loosely defined, highly technical problems.
• Consistently writes, co-writes, and reviews documentation and production-ready code that is clear, concise, tested, and easily understood by others.
• Quick and effective in identifying and resolving issues, balancing trade-offs between speed, quality, and technical debt.
• Understands the big picture and system-wide impact, aligning with and contributes to domain-wide architecture, security and technology standards.
• Designs solutions with scalability and future needs in mind.
• Optimises for performance, maintainability, and security, actively looks for security vulnerabilities both in code and when providing code reviews.
• Contribute to the System Health and Tech debt backlog for their respective owned service.
• Collaborate with Lead Engineers and Tech Leads on improving process and system change.
• Mentors and guides junior team members, fostering a culture of continuous improvement and engineering excellence.

Skills

ReactJS

JavaScript

TypeScript

Next.js

GraphQL

AWS

CI/CD

Docker

Agile

OWASP

Education

Degree in Computer Science / Software Engineering

Tools

Docker

Kubernetes

CI/CD tooling

CloudWatch

Job description

CoStar Group, Inc. is seeking a Senior Software Engineer to drive frontend architecture and deliver scalable UI features using React, TypeScript, and Next.js. You will mentor junior engineers, shape technical direction, and align work with security and domain standards.

The role emphasizes performance, reliability, and collaboration with cross-functional teams in a dynamic environment, including Cloud and DevOps practices.