Karbon is seeking a Senior Full Stack Software Engineer to join the team working on Aider, a product within the Karbon portfolio. This is a distinct engineering role with a different tech stack and problem space from Karbon’s core platform. You’ll work in an agile, product-focused team to design, build, and evolve highly interactive web applications. This role is frontend-led, with full-stack ownership and ~20% focus on backend/API work, primarily using Node.js. You’ll have strong autonomy, real product ownership, and the opportunity to influence how modern engineering practices—including AI-assisted development—are applied within Aider.
About the Role!
Product & Engineering Execution
- Design, build, and maintain high-quality, customer-facing web applications using React and TypeScript, with a strong emphasis on frontend experience and performance.
- Develop and maintain backend services and APIs using Node.js, contributing to data flows, integrations, and platform reliability (~20% of scope).
- Translate product requirements into clear technical designs, balancing speed, quality, and long-term maintainability.
- Own features end to end—from discovery and implementation through deployment, monitoring, and iteration.
User Experience & Growth
- Optimize user experiences through thoughtful UI/UX decisions, performance improvements, and frontend architecture.
- Use experimentation techniques such as A/B testing, feature flags, and funnel analysis to improve acquisition, activation, and retention.
- Study user behavior data to identify opportunities for improvement and refinement across the product.
Quality, Collaboration & Ownership
- Work closely with QA, Product, and Design to ensure features are well-tested, reliable, and meet user expectations.
- Participate actively in code reviews, technical discussions, and architectural decisions.
- Take ownership of existing systems as well as new development, making iterative improvements to keep the product healthy and scalable.
- Collaborate effectively with a distributed, international engineering team in a low-politics, high-trust environment.
AI, Automation & Modern Engineering Practices
- Leverage AI-assisted development tools (e.g. for code generation, refactoring, testing, and documentation) to improve development velocity and code quality.
- Identify opportunities to automate repetitive engineering tasks and improve workflows across development, testing, and deployment.
- Apply AI-enabled insights responsibly when analyzing user behavior, experiments, or product performance.
About You!
We know great engineers come from many backgrounds. You don’t need to tick every box below to apply.
- 3+ years of professional experience in full-stack software development, with a strong frontend focus.
- Advanced proficiency in React and modern frontend patterns.
- Experience using TypeScript across frontend and backend codebases.
- Hands-on experience building APIs and services with Node.js.
- Working knowledge of state management libraries such as MobX (or similar).
- Experience with PostgreSQL or similar relational databases.
- Familiarity with microservices architectures and distributed systems.
- Experience with containerization technologies such as Docker and Kubernetes.
- Strong understanding of software engineering best practices across the full SDLC (testing, CI/CD, monitoring).
Product & Growth Mindset
- Experience with feature flags, experimentation, and data-driven iteration.
- Strong analytical and problem-solving skills, especially when working with ambiguous product challenges.
- Passion for understanding user behavior and building software that anticipates user needs.
Ways of Working
- Comfortable working autonomously with high ownership and accountability.
- Strong communication and collaboration skills for working across time zones and disciplines.
- Takes pride in craftsmanship and feels genuine ownership over the impact of their work.
- Curious, creative, and excited about building consumer-facing software used globally.
Education
- Bachelor’s degree in Computer Science, Mathematics, Statistics, Data Science, 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
AI is reshaping how software gets built, and at Karbon we’re fully committed. We don’t see AI as a replacement for engineers. We see it as a force multiplier that will elevate creativity, impact and capability to levels we’ve barely begun to imagine. We’re looking for developers who are confident in their fundamentals, driven to grow, and excited to harness AI to build something meaningful. If you’re energized by this future rather than cautious of it, you’ll feel right at home here.
