Senior Backend Software Engineer (Chat)

Posted 19 Days Ago
Be an Early Applicant
Sydney, New South Wales
In-Office
120K-180K Annually
Senior level
Artificial Intelligence
The Role
As a Senior Backend Software Engineer, you'll design and maintain scalable back-end systems for AI-driven chat experiences, mentor team members, and ensure high code quality while collaborating with cross-functional teams.
Summary Generated by Built In

Location 📍: Sydney, AU, Hybrid (3 days in office required)

About Us 🚀

At Relevance AI, we’re building the home of the AI workforce.

Our mission is simple: empower every team to delegate meaningful work to AI agents that think, act, and collaborate like experts.

With Relevance AI, anyone can create and manage intelligent agents that handle workflows, decisions, and collaboration - all within one unified platform. Our technology already powers industry leaders such as Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard, helping them scale excellence across operations, marketing, and sales.

We’re backed by Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital, and raised our Series B in April 2025 to accelerate growth and push the boundaries of agentic automation.

Headquartered in San Francisco and Sydney, we operate on a hybrid model and thrive on curiosity, collaboration, and execution - we move fast, think big, and win together.

In 2025, we were proud to be named LinkedIn’s #1 Startup in Australia.

If you want to define how the world works with AI, join us.

The Role 🥳

We’re hiring for a Senior Back-End Software Engineer to join our Chat team in Sydney.

This team owns one of Relevance AI’s newest and fastest-growing products: Chat, the conversational layer of our platform. Chat enables users to interact with pre-built AI agents, workplace productivity tools, and research workflows - all through a highly reliable, scalable back-end that powers real-time, agentic experiences.

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.

Your Impact 💥

  • Design, build, and operate scalable back-end systems that power real-time, AI-driven chat experiences.

  • Own mission-critical services and infrastructure, delivering impactful features from ideation through to production.

  • Push the boundaries of applied AI by enabling new agent capabilities, workflows, and system behaviours.

  • Shape how we build by influencing engineering standards, architecture, and processes as we scale.

  • Mentor and support engineers across the team, raising the bar for technical quality and ownership.

  • Set and uphold high standards for code quality, performance, reliability, and security.

  • Collaborate closely with product, design, and leadership to align technical direction with business outcomes.

Our Tech Stack (so far) 💻

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

What We’re Looking For 🧠

  • 4+ years of hands-on software engineering experience, ideally within fast-paced, high-growth tech environments.

  • Strong experience designing, building, and maintaining production back-end systems.

  • Thrive in dynamic, high-performance start up settings and comfortable with ambiguity, rapid iteration, and taking initiative.

  • Demonstrated ability to take full ownership of projects, solve complex problems, and consistently deliver high-quality, impactful results.

  • Deep interest in artificial intelligence and excitement to build innovative, category-defining products.

  • Regularly leverage AI tools and technologies in your workflow, and stay up-to-date with the latest advancements to boost productivity and innovation.

Bonus Points if You Have Any Of The Following ⭐

  • Experience building systems for enterprise or high-scale users.

  • Contributions to open-source projects (we’d love to see your GitHub).

  • Hands-on experience with LLMs, agent workflows, or AI infrastructure.

Interview Process 💬

  1. Talent Interview (virtual)

  2. Hiring Manager Interview (virtual)

  3. Technical Interviews (onsite)

  4. Co-Founder Interview (virtual/ onsite)

Why Join Us? 🌟

  • 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.

Benefits ✨

  • 📈 ESOP – Employee Stock Ownership Plan so you can grow with the company

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

  • 👶 Parental Leave – We offer 12 weeks of paid parental leave for all eligible new parents, and an additional 6 weeks for the birthing parent

  • 🎉 Milestone Merch – Celebrate your work anniversaries with customised Relevance AI swag

  • 🍿 Food, Drinks & Community – 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.

  • 🪩 Quarterly Team Events – Build stronger connections through fun, meaningful team bonding experiences every quarter

  • 🏓 Social Clubs – 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!

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

Top Skills

AWS
Express.Js
MongoDB
Node.js
Nuxt
Postgres
Terraform
Typescript
Vercel
Vue
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Sydney, New South Wales
24 Employees
Year Founded: 2020

What We Do

At Relevance AI, our mission is to be the home of the AI workforce. Our no-code platform enables anyone to build AI teams, equipped with custom AI tools.

Similar Jobs

Pluralsight Logo Pluralsight

Business Development Representative

Edtech • Information Technology • Software
Remote or Hybrid
Australia
1300 Employees

SailPoint Logo SailPoint

Customer Success Manager

Artificial Intelligence • Cloud • Sales • Security • Software • Cybersecurity • Data Privacy
Remote or Hybrid
Sydney, New South Wales, AUS
2461 Employees

IMC Trading Logo IMC Trading

Software Engineer

Fintech • Machine Learning • Software • Financial Services
Hybrid
Sydney, New South Wales, AUS
1954 Employees

IMC Trading Logo IMC Trading

Compliance Officer

Fintech • Machine Learning • Software • Financial Services
Hybrid
4 Locations
1954 Employees

Similar Companies Hiring

Scotch Thumbnail
Software • Retail • Payments • Fintech • eCommerce • Artificial Intelligence • Analytics
US
25 Employees
Milestone Systems Thumbnail
Software • Security • Other • Big Data Analytics • Artificial Intelligence • Analytics
Lake Oswego, OR
1500 Employees
Idler Thumbnail
Artificial Intelligence
San Francisco, California
6 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account