Senior Backend Engineer

2 days ago

Sydney, New South Wales, Australia Airtree Ventures Full time US$120,000 - US$180,000 per year

This role is based in San Francisco, not Australia - we are trying something a little different to attract talent.

Airtree has recently invested in an Aussie-founded startup building the next generation of B2B software infrastructure. Your application will be reviewed by our portfolio company and they will contact you for an interview if successful. 

This is your opportunity to join an Australian-founded startup with a team in SF, at the ground floor — with a relocation package to SF and visa sponsorship for Australians ready to make the move to the US.

Below is a description of the role from the company.

You'll be joining the founding engineering team in San Francisco, working alongside the Australian founder and a small, world-class team of engineers. You'll have the chance to shape the technical foundation of a platform that's redefining how software is bought and sold, while experiencing life in one of the world's most dynamic tech ecosystems.

We'll handle the logistics: relocation support, visa sponsorship, and help getting set up in the US — so you can focus on doing your best work.

What you'll do
  • Design and build the core backend services that enable complex, asynchronous workflows across multiple systems.
  • Create the foundational frameworks used across the engineering team to power new product capabilities.
  • Own key design and architectural decisions, from scalability to resilience to developer experience.
  • Work closely with product and leadership to define how we build for speed, scale, and quality.
  • Set engineering standards, mentor peers, and help shape a high-performance culture.

Who you are

  • A systems thinker who designs for resilience, scalability, and observability.
  • Pragmatic and product-minded, balancing technical excellence with startup agility.
  • Passionate about developer experience, and building tools that empower others.
  • Excited by the chance to own greenfield systems from day one and influence long-term architecture.
  • Strong communicator who thrives in a fast-moving, collaborative environment.
Requirements
Your background
  • 5+ years of backend engineering experience, building and operating distributed systems.
  • Strong expertise in a modern backend language — Python, Go, Java, or similar.
  • Deep understanding of event-driven design, message queues, and asynchronous systems.
  • Experience with AWS/GCP and containerised environments.
  • Solid grasp of API design, data modelling, and database architecture.
  • (Bonus) Experience with orchestration engines, developer tools, or SDKs.

Ready to make the move?

Join a team that's moving fast, thinking globally, and building something with massive scale.
If you're an Australian engineer ready to take your career to Silicon Valley — this is your moment.

Benefits
What we offer
  • Relocation + visa sponsorship for Australians.
  • Competitive salary and meaningful equity — build what you own.
  • Unlimited paid time off, with a minimum recharge expectation.
  • Dedicated career development and learning allowances.
  • Fitness and mental health benefits.
  • A chance to live and work in San Francisco, while staying connected to the Australian startup community.

  • Senior Backend Engineer

    7 days ago

    Sydney, New South Wales, Australia Description Nexl Full time $120,000 - $180,000 per year

    DescriptionNexl is the fast-growing LegalTech company on an ambitious mission to elevate the business of law.We build an AI-driven CRM and growth intelligence platform that brings a firm's internal and external data together so lawyers, marketing, and business development can collaborate, spot opportunities, and grow revenue.Recognised by the Financial...

  • Senior Backend Engineer

    2 weeks ago

    Sydney, New South Wales, Australia Nexl Full time $120,000 - $180,000 per year

    About UsNexl is the fast-growing LegalTech company on an ambitious mission to elevate the business of law.We build an AI-driven CRM and growth intelligence platform that brings a firm's internal and external data together so lawyers, marketing, and business development can collaborate, spot opportunities, and grow revenue.Recognised by the Financial Times,...

  • Senior Backend Engineer

    5 days ago

    Sydney, New South Wales, Australia Marlee Full time $120,000 - $180,000 per year

    About the companyFast-track your career with the Marlee Talent Pool. We're not just matching you with your ideal roles but unlocking your long-term career potential. Marlee goes above and beyond by identifying key strengths for your CV, helping you discover a career direction you might not have considered where you can truly thrive, and guiding you to...

  • Senior Backend .NET Engineer

    2 weeks ago

    Sydney, New South Wales, Australia Bluefin Resources Pty Limited Full time $114,600 - $117,600 per year

    Senior Backend .NET Engineer – Contract Major Retail Organisation | Sydney CBD | $950 + GST per day | 6-Month Engagement (Potential Extension) We are working with a leading Australian retail business on a high-profile Greenfield project. This role offers the chance to build a national coupon platform that will be rolled out across the country. You'll be...

  • Senior Backend Engineer

    1 week ago

    Sydney, New South Wales, Australia Canva Full time $120,000 - $180,000 per year

    Job DescriptionJoin the team redefining how the world experiences design.Hey, g'day, mabuhay, kia ora,你好, hallo, vítejteThanks for stopping by. We know job hunting can be a little time consuming and you're probably keen to find out what's on offer, so we'll get straight to the point.Where And How You Can WorkOur flagship campus is in Sydney. We also...

  • Senior Backend Engineer

    5 days ago

    Sydney, New South Wales, Australia Canva Full time $120,000 - $180,000 per year

    Job Description Join the team redefining how the world experiences design.Hey, g'day, mabuhay, kia ora,你好, hallo, vítejteThanks for stopping by. We know job hunting can be a little time consuming and you're probably keen to find out what's on offer, so we'll get straight to the point. Where and how you can workOur flagship campus is in Sydney. We also...

  • Backend Software Engineer

    7 days ago

    Sydney, New South Wales, Australia DroneShield Full time $80,000 - $120,000 per year

    About the roleDroneShield is seeking a Backend Software Engineer to join the Access Portal Team - the central platform where customers interact with their DroneShield devices, manage their systems, and access core functionality across the DroneShield ecosystem.In this role, you will build and expand the Access Portal's backend, focusing on database...

  • Senior Backend Engineer

    7 days ago

    Sydney, New South Wales, Australia Canva Full time $180,000 - $250,000 per year

    Job DescriptionJoin the team redefining how the world experiences design.Hey, g'day, mabuhay, kia ora,你好, hallo, vítejteThanks for stopping by. We know job hunting can be a little time consuming and you're probably keen to find out what's on offer, so we'll get straight to the point.Where And How You Can WorkOur flagship campus is in Sydney. We also...

  • Senior Backend Engineer

    5 days ago

    Sydney, New South Wales, Australia Canva Full time $120,000 - $180,000 per year

    Job Description Join the team redefining how the world experiences design.Hey, g'day, mabuhay, kia ora,你好, hallo, vítejteThanks for stopping by. We know job hunting can be a little time consuming and you're probably keen to find out what's on offer, so we'll get straight to the point. Where and how you can workOur flagship campus is in Sydney. We also...

  • Senior Backend Engineers

    2 weeks ago

    Sydney, New South Wales, Australia Assembl Talent Pty Ltd Full time $120,000 - $180,000 per year

    Interactive EdTech company is hiring a Senior Backend Engineer (Python/Django) to scale its adaptive learning platform powered by AI. Join a mission-driven team creating apps that guide students through lessons in real time, already supporting classrooms across Australia, North America and Asia.What you'll doEnhance web and mobile apps used by hundreds of...