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Fullstack Engineer

Karbon

Sydney, NSW, Australia (Australia - NSW) Remote permanent

Posted: January 16, 2026

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Job Description

About Karbon

Karbon is the global leader in practice management software for growth-minded accounting firms. We provide an award-winning, highly collaborative cloud platform that streamlines work and communication, enabling the average accounting firm using Karbon to save 18.5 hours per week, per employee.

We have customers in 34 countries and have grown into a globally distributed team, with our people based throughout the US, Australia, New Zealand, Canada, the United Kingdom, and the Philippines. We are well-funded, ranked #1 on G2, have a fantastic team culture built on our values, are growing rapidly, and making a global impact.

Karbon is seeking a Mid-Level, Full Stack Software Engineer. This is an exciting time to join the team because we are expanding our organization. In this role, you will be working within an agile development team to design and build interactive web applications. They are responsible for technical specifications and developing and deploying software.

Key Responsibilities :

• Balance Speed and Quality—You adeptly balance the need for speed with a commitment to quality. You know when to accelerate to meet deadlines and when to focus on detail for perfect outcomes. You have the judgment to navigate these priorities effectively, maintaining a keen eye for both efficiency and excellence.

• Work effectively as part of a team - Software development is a team sport, where solo victories are rare. It thrives on your robust collaboration and dedication to supporting your colleagues. You will also be working closely with quality assurance team members to resolve issues raised by testing throughout the development cycle.

• Build and maintain - Your role involves developing innovative products and ensuring the continuous operation of existing ones of the Karbon software applications. You appreciate not only the allure of new technologies but also the importance of iterative improvements on established systems. Your commitment to pioneering and preservation is crucial. You will be responsible for optimizing user experiences, study user-centric data for meaning, experiment with acquisition channels and fine-tune conversion funnels.

• Autonomy—You are inherently curious, finding joy in learning and exploration. Faced with challenges and direction rather than predefined solutions, you engage fully and creatively with problems.

• Own your work—You take genuine pride in your creations, feeling a deep sense of responsibility for the products you develop and their impact on customers. This sense of ownership is paramount, and you share this commitment.

• Bring your passion and personality—Your creativity, curiosity, and authentic self make the team stronger. If you've worked in highly political environments, you'll find our culture, free from office politics and valuing openness and authenticity, a refreshing change.

Qualifications

• At least 2 years experience with C#, SQL Server, .Net (MVC, Web API, .Net Core a plus) and JavaScript/TypeScript

• Understanding of scalable computing systems, software architecture, data structures, and algorithms

• Experience in A/B testing and data analysis to optimize key metrics such as user acquisition and retention

• Excellent analytical skills and problem solving skills

• Excellent communication and collaboration skills to work in an international, multi-location team

• Has initiative and passion for all things web, and a willingness to go the extra mile

• Ability to work as part of a team and able to take pride and ownership in their work

• Passionate about users behavior, anticipating their needs and preferences

• Passionate about developing consumer facing software used globally and across industries

• A Bachelor’s degree in Computer Science, Mathematics, Statistics, Data Science, or equivalent experience is needed

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

Karbon embraces diversity and inclusion, aligning with our values as a business. Research has shown that women and underrepresented groups are less likely to apply to jobs unless they meet every single criteria. If you've made it this far in the job description but your past experience doesn't perfectly align, we do encourage you to still apply. You could still be the right person for the role!

We recruit and reward people based on capability and performance. We don’t discriminate based on race, gender, sexual orientation, gender identity or expression, lifestyle, age, educational background, national origin, religion, physical or cognitive ability, and other diversity dimensions that may hinder inclusion in the organization.

Generally, if you are a good person, we want to talk to you. 😛

If there are any adjustments or accommodations that we can make to assist you during the recruitment process, and your journey at Karbon, contact us at [email protected] for a confidential discussion.

At this time, we request that agency referrals are not submitted for this position. We appreciate your understanding and encourage direct applications from interested candidates. Thank you!

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