Full Stack AI Software Engineer - (Agentic Systems, LLMOps)

At Sonder, we believe that every person deserves to feel safe, supported, and empowered to be at their best - wherever they are. That’s why we’re redefining workplace health, safety, and wellbeing through a seamless blend of technology and human expertise. Sonder’s mobile platform provides 24/7, real-time support from a dedicated team of safety, medical, and mental health professionals - ensuring that our members receive immediate care when they need it most. In critical situations, we go beyond digital support, offering on-the-ground assistance to manage time-sensitive incidents.

By harnessing real-time insights, we enable organisations to take proactive steps toward a healthier, safer future, which leads directly to tangible bottom-line business outcomes.

An Exciting Time to Join Sonder! 

Since our founding in 2017, Sonder has experienced rapid growth, expanding operations across Australia, New Zealand, and the UK. Backed by Australia’s leading venture capital firms, Seek and Blackbird, we are well-capitalised and on a mission to scale globally, partnering with corporations, educational institutions, and government agencies to transform workplace wellbeing at scale. Our impact and scale: 1,000,000+ members across multiple countries 200+ team members, plus an extensive network of on-the-ground responders If you’re passionate about using technology and human expertise to drive meaningful change, join us in shaping the future of workplace wellbeing!

 

About the Role

We’re looking for a Full Stack AI Engineer (Agentic Systems, LLMOps) to design, build, and operate production-grade AI systems at Sonder. This is not a prototyping role. You’ll be responsible for building reliable, scalable AI systems that combine LLMs, retrieval, tools, and structured workflows—and ensuring they perform in real-world, safety-critical scenarios.

You’ll work across the stack—from user-facing AI experiences to backend AI services and model infrastructure—with a strong focus on:

• Agentic system design
• LLMOps and production reliability
• Model serving and inference optimisation
  
  

What You'll be Doing 

• Design and build agentic AI systems using frameworks like LangChain, LangGraph, Strands Agents SDK etc
• Develop LLM-powered features such as copilots, triage systems, and decision-support tools
• Build and optimise RAG pipelines and knowledge retrieval systems
• Deploy and operate LLM systems in production, including monitoring, evaluation, and optimisation (LLMOps)
• Serve and scale fine-tuned models (LoRA/PEFT) using frameworks like vLLM, TGI, or similar
• Optimise systems for latency, cost, reliability, and scalability
• Build across the stack, from backend AI services to frontend AI experiences
• Prototype and productionise new AI approaches, models, and workflows
• Collaborate cross-functionally to deliver high-impact AI solutions
  
  

What you will bring to the Role

• Experience building LLM-powered applications in production
• Strong backend engineering skills (Python, Node.js, or similar) 
• Experience with agent frameworks (LangChain, LangGraph, LlamaIndex, or similar)
• Experience building RAG systems and working with vector databases
• Understanding of agentic architectures (tool use, workflows, structured outputs)
• Experience with LLMOps (monitoring, evaluation, prompt/version management, optimisation)
• Familiarity with model serving frameworks (vLLM, TGI, TensorRT-LLM, etc.)
• Experience deploying or working with fine-tuned models (LoRA/PEFT)
• Strong understanding of performance, cost, and reliability tradeoffs in AI systems
• Experience with cloud platforms (AWS/GCP/Azure) and modern DevOps practices
  
  

Why Join Sonder?

• Hybrid and flexible working – strike the right balance for your life and productivity
• Free Sonder app access for you and your family – 24/7 health, safety and wellbeing support
• 2 days study leave
• Paid parental leave – 12 weeks for primary carers and 4 weeks for secondary carers, with a supportive return-to-work program
• Employee Share Option Plan (ESOP) – share in Sonder’s success
• Wellbeing fund – $250 per year to spend your way
• Novated leasing and salary packaging options
• Weekly team perks – free coffee Tuesdays, catered lunch Thursdays, and a dog-friendly office
• Volunteer leave – 2 days per year to support causes that matter to you
• Regular social events and team bonding opportunities

 

Sonder is for Everyone

We’re committed to building a diverse and inclusive workplace. We encourage applications from people of all backgrounds, experiences, abilities and identities. If you need any support with your application or the recruitment process, please reach out – we’d love to hear from you.

Due to the nature of our industry, all Sonder employees are required to complete a National Police Check and Working With Children Check.