Senior Software Engineer

Want to leverage your technical skills at a high-growth startup AND make a difference in the world?

Come join the revolootion!

Funny name, serious business We make eco-friendly products and donate 50% of our profits to provide clean water and help build toilets for the billions of people who lack proper access to basic facilities. So far, we’ve contributed over $18 million to fund sanitation projects around the globe. We need people like you to join our mission and ensure everyone around the world has access to clean water and a toilet.

As a genuine remote-first company, we lean into being a high-functioning distributed team. We recognise some people achieve maximum productivity and work-life balance being fully remote. We have a strong culture of trust, and we love to deliver and delight!

Our engagement surveys (thanks Culture Amp!) tell us that our team is really proud (95%) to work for Who Gives A Crap and, well, we couldn’t be more proud of that.

Our Digital Product teams drive the technology and experiences for first-time and returning customers of Who Gives A Crap. As a Senior Software Engineer, you’ll be a technical leader, writing clean, maintainable code across the full stack while mentoring others and architecting scalable solutions. You’ll play a key role in pushing our initiatives forward, balancing rapid innovation with engineering excellence.

If you’re passionate about growth and innovation, and looking to leverage cutting-edge tools to solve complex problems, we’d love to have you on our team!

• Architect Scalable Full-Stack Solutions: Design and build robust systems from front-end interfaces in React to back-end logic using Express and Postgres.
• Master Modern Workflows: Create and maintain complex algorithms utilising GCP Workflows, Git Hub Actions CI/CD, and AI-assisted development to accelerate our delivery.
• Scale the Design System: Lead the expansion of our Design System using Tailwind CSS, ensuring a sleek, accessible UI that scales across our global platforms.
• Custom Integrations: Develop bespoke systems like our referrer marketing engine or custom Shopify experiences that bridge the gap between third-party APIs (Klaviyo, Shopify) and our internal infrastructure.
• AI-Driven Innovation: Actively integrate AI tools into your daily workflow to optimise code quality, automate testing, and explore new ways to enhance the customer experience.

You’re a seasoned engineer who thrives in a collaborative, high-energy environment. You’re a system thinker who can bridge front-end polish and back-end stability. You’re also an AI-forward developer — you see AI as a force multiplier and have already integrated it into your workflow to build smarter and faster.

• Architectural Mindset: Strong system design thinking with the ability to speak to tradeoffs, scalability, and performance across the entire stack.
• AI-Power User: Proficient with AI coding assistants and LLMs, using them to diagnose problems, generate boilerplate, and solve complex logic with efficiency.
• Server-Side Authority: Deep experience in at least one server-side language (Node.js/Express preferred) and working with databases like Postgres.
• Quality Advocate: Demonstrated mastery of modern frameworks and automated testing—you believe "done" means "tested and scalable."
• Leadership & Mentorship: A desire to level‑up the team through code reviews, architectural guidance, and fostering an open, creative culture.

• Experience in the ecommerce space (Shopify) or working within a B Corp environment.

• Genuine culture of collaboration
• We’re a small team, so there’s a lot of room to develop your unique identity and path within the company.
• We’ll encourage you to work across disciplines and broaden your horizons while helping you grow.
• FREE toilet paper, hand towel, tissues and a few other things
• The freedom to act on good ideas, quickly. We’ll help you get there!
• Generous leave policies - including “Life” Leave.
• Remote‑first culture with opportunity to collaborate in person in Melbourne and Sydney
• Work From Home stipend, professional development budgets and access to hub office locations at The Commons (Melbourne and Sydney).

As a certified B Corp™, we work to make a difference every day while maintaining the highest standards of social and environmental impact. With our most recent score of 125.5 we’re in very good company with other exceptional B Corps around the world.

Here’s the thing, though — research suggests that 60% of women and underrepresented folks might have already talked themselves out of applying. Even if you don’t check every box above, we want to encourage you to introduce yourself.

We believe a diversity of perspectives and experiences makes a team stronger — and the stronger our team, the closer we are to delivering toilets and clean water for all.