Karbon is seeking a Junior Full Stack Software Engineer to join one of our agile engineering teams in either Sydney or Melbourne.

This role is a great opportunity for an early-career engineer who wants to build strong technical and product foundations while working on real customer problems. Your primary focus will be investigating and resolving customer support cases and escalations. You'll work closely with other engineers, QA, and product partners to understand issues, identify root causes, and deliver fixes that make a real difference to our customers.

You'll be part of the engineering team and have the opportunity to learn the wider codebase, development practices, and product. As you build confidence and experience, there will be opportunities to take on broader engineering work and grow into other areas of the team or wider organisation.

About the Role

• Investigate and resolve customer issues – Work through support cases and escalations to understand what is happening, reproduce issues, investigate the underlying cause, and implement appropriate fixes.
• Debug and improve the product – Get hands-on with the codebase, logs, databases, and development tools to diagnose problems and improve the reliability and quality of our software.
• Learn the product deeply – Build a strong understanding of how Karbon works and how customers use it, using that knowledge to make better technical decisions and identify opportunities to improve the product.
• Work closely with the team – Collaborate with experienced engineers, QA, product managers, and support teams to investigate problems, review solutions, test fixes, and get issues safely into customers' hands.
• Balance speed and quality – Learn when an issue needs a quick resolution and when it requires deeper investigation, making thoughtful trade-offs while maintaining a high standard of engineering.
• Use AI tools thoughtfully – Leverage AI to help investigate problems, understand unfamiliar code, explore solutions, or write tests, while applying good judgement and reviewing everything before it ships.
• Build engineering skills – Develop your understanding of our systems, architecture, development practices, testing, deployments, and the tools we use to build and operate Karbon.
• Work with increasing autonomy – Start by tackling well-defined issues with support from the team, and gradually take ownership of more complex problems as your skills and confidence grow.
• Grow your career – As you develop, there will be opportunities to expand beyond support and escalation work into feature development and other areas of engineering, depending on your interests, strengths, and the needs of the team.
• Bring your whole self – Contribute your curiosity, creativity, and personality to a low-politics, open, and collaborative team culture.

About You!

We know great engineers come from many backgrounds. You don’t need to tick every box below to apply.

• A basic understanding of software fundamentals such as APIs, debugging, testing, and data structures
• Some hands-on experience building or maintaining web applications using C#, .NET and JavaScript or TypeScript
• Familiarity with SQL Server or relational databases, and an interest in understanding how data flows through an application
• Strong curiosity and problem-solving skills – you enjoy digging into a problem, asking questions, and figuring out what's going on
• A willingness to get comfortable working in an existing codebase and learning how a large application works
• A sense of ownership and pride in your work, balanced with a willingness to ask questions, accept feedback, and learn from others
• An interest in understanding customer problems and using technology to solve them
• Comfortable working collaboratively with engineers, QA, product, and support teams
• A growth mindset – you're excited to build your skills and take on more responsibility over time
• A degree in Computer Science (or similar), or equivalent practical experience

Why Work at Karbon?

• Gain global experience across the USA, Australia, New Zealand, UK, Canada and the Philippines
• 4 weeks annual leave plus 5 extra "Karbon Days" off a year
• Flexible working environment
• Work with (and learn from) an experienced, high-performing team
• Be part of a fast-growing company that firmly believes in promoting high performers from within
• A collaborative, team-oriented culture that embraces diversity, invests in development, and provides consistent feedback
• Generous parental leave

Our Engineering Standards

Balance Speed and Quality

Engineers are expected to balance delivery speed with a strong commitment to quality, meeting agreed timelines while producing reliable, maintainable, and well-tested solutions. Sound judgment in making trade-offs between velocity and long-term sustainability is essential.

Collaborate Effectively

Engineering is collaborative by default. Team members are expected to contribute constructively in design discussions, reviews, and planning, communicate clearly about progress and risks, and support shared team outcomes in both hybrid and distributed environments.

Build and Maintain Systems

Engineers are responsible for building new capabilities while maintaining and improving existing systems. This includes designing scalable solutions, reducing technical debt, supporting operational stability, and contributing to continuous improvement.

Operate with Autonomy

A high degree of autonomy is expected. Given clear objectives, engineers should independently translate problems into actionable technical approaches, proactively identify improvements, and continuously expand relevant technical expertise.

Ownership and Accountability

Ownership is fundamental. Engineers are accountable for the quality, performance, and customer impact of their work from design through post-release support, and are expected to follow through on commitments.

AI-Enabled Engineering

AI is reshaping how software is built, and we are committed to leveraging it as a force multiplier for creativity, impact, and capability. Engineers are expected to confidently apply strong technical fundamentals while embracing AI tools and approaches to enhance productivity, problem-solving, and innovation. Curiosity, adaptability, and enthusiasm for integrating AI into meaningful product development are essential.

Contribute to Team Culture

Engineers contribute positively to a culture of professionalism, transparency, low bureaucracy, and mutual respect, strengthening team performance through authenticity, curiosity, and collaboration.