Senior Backend Software Engineer (enterprise)

Senior Back-End Software Engineer

We're hiring for a Senior Back-End Software Engineer to join our mission-critical Enterprise team in Sydney.

This team builds and scales the core platform capabilities that power Relevance AI's largest and most demanding customers. You'll work on the systems that make our platform secure, reliable, compliant, and extensible at enterprise scale - from identity and access management to auditability and compliance.

This role is ideal for an engineer who enjoys solving deep technical problems, designing robust back-end systems, and owning complex projects end-to-end in close collaboration with product and customer-facing teams.

Each engineering team at Relevance AI is tackling a different frontier of the AI workforce, from enabling individual builders to scaling enterprise-grade AI systems used by thousands of employees globally. This role sits at the heart of that mission, building the systems that make AI usable, reliable, and production-ready.

At Relevance AI, your work will reach customers within hours, offering a rare opportunity to see the impact of your contributions in real-time. You'll have autonomy and trust to lead key projects and mentor team members without being weighed down by unnecessary layers of approval.

You'll work across our modern tech stack, which we're constantly optimising to move and iterate faster. Our supportive, fast-paced culture fosters collaboration, curiosity, and creativity, making it an environment where innovation thrives and where your ideas and expertise will be highly valued.

Design, build, and operate enterprise-grade back-end systems relating to SSO, RBAC/permissions, audit logs, compliance tooling, and data visibility.

Drive key initiatives around reliability, scalability, performance, and security to support enterprise adoption.

Translate customer and business requirements into robust technical designs in collaboration with product and go-to-market teams.

Own projects end-to-end - from system design through to deployment and long-term maintenance.

Contribute to platform architecture and technical strategy as the enterprise surface area of the product expands.

Set and uphold high standards for code quality, maintainability, observability, and security.

Mentor engineers, share best practices, and help raise the overall bar for back-end excellence.

We leverage a modern, scalable, and developer-friendly technology stack to build robust web applications:

Frontend: Vue.js, Nuxt, Typescript

Backend: Express.js, Node.js, Typescript

Database: MongoDB, PostgreSQL

Cloud Infrastructure: Vercel, AWS (Lambda, Batch, CloudWatch), Terraform

4+ years of hands-on software engineering experience, ideally back-end focussed and in fast-growing or enterprise-focused environments.

Experience delivering enterprise features such as SSO, permissions systems, audit logs, or compliance frameworks.

Strong skills in modern web technologies, ideally TypeScript, Node.js, and cloud infrastructure (AWS preferred).

Experience designing and operating APIs (REST or GraphQL) and distributed systems.

Passion for designing and building scalable and fault-tolerant systems for real-world users in enterprise environments.

Ability to collaborate effectively across product, design, and commercial teams - translating business needs into scalable technical solutions.

Ownership mindset — proactive in driving projects, solving problems, and improving systems.

Passion for AI and eagerness to build innovative, category-defining products.

Regularly use AI tools and technologies to improve workflow and productivity.

Understanding of large scale per-customer deployments (including on-premise and cloud).

Knowledge of FGA/ RBAC access controls, AWS infrastructure, SSO/ OAuth systems, and platform analytics.

Talent Interview (virtual)

Hiring Manager Interview (virtual)

Technical Interviews (onsite)

Co-Founder Interview (virtual/ onsite)

Work at the forefront of AI with a nimble team that is constantly pushing boundaries. We encourage and celebrate ideas that drive our mission forward.

We're guided by our five values: truth-seeking, being empathetic, putting the customer first, iterating extremely fast, and building memories.

We've set high standards in our high-trust, low-ego environment. We hire exceptional people to do the best work of their lives. In return, we reward our people with competitive salaries, equity stake, unparalleled professional growth, and career-defining opportunities.

Relevance AI is well-funded by leading investors, including Bessemer Venture Partners, Insights Partners, Peak XV, and King River Capital.

As an early team member, you'll play a key role in shaping our future—including our culture, ways of working, and even the benefits we offer. We're laying the foundations now, and your ideas can help define what comes next.

Employee Stock Ownership Plan so you can grow with the company

Get up to $1200 USD/year to spend on AI tools, courses, and learning resources that help you work smarter and grow your skills

12 weeks of paid parental leave for all eligible new parents, and an additional 6 weeks for the birthing parent

Celebrate your work anniversaries with customised Relevance AI swag

Stay energised with free breakfasts, healthy snacks, and a fully stocked fridge of drinks. Enjoy team lunches provided every Thursday and Friday, plus Uber Eats dinners and regular catered office meals throughout the week. As the home of the AI workforce, we also host vibrant community events featuring thought leaders, industry partners, and the wider tech community.

Build stronger connections through fun, meaningful team bonding experiences every quarter

Share your hobbies and interests by joining or starting a club with your teammates. From hiking and chess to board game nights and social committee activities—there's something for everyone!

Access 24/7 mental health and wellbeing support through Sonder, our Employee Assistance Program