Senior ML Engineer: LLM Context & AI Systems

Atlassian; Sydney; Hybrid; AUD 160,000 - 230,000; Full time

Job summary

At Atlassian, a Senior Machine Learning Engineer is sought to join the AI Context team, helping to design, build, and operate agentic LLM harness solutions across product features. The role is based in Sydney, NSW, with flexible work options including hybrid work.

You will work with a team of SWEs and MLEs across Sydney, Melbourne, Brisbane, and the US West Coast, shaping the long-term direction of LLM harness engineering while coaching junior engineers.

Qualifications

• Bachelor’s or Master’s degree, preferably in Computer Science or a related field, or equivalent practical experience
• 4+ years of industry experience in machine learning, including hands-on experience designing, evaluating, and operating LLM-based or agentic systems
• Strong coding skills in Kotlin and/or Python, with production-quality code and AI-assisted software development practices
• Experience building and operating machine learning systems in production, including operational practices to improve quality, reliability and cost
• Experience building datasets, evaluations, and benchmarks for systems at scale; familiarity with SQL, distributed data processing and cloud data environments
• A strong ownership mindset and a track record of driving ambiguous technical outcomes from problem definition through delivery and operation
• Strong communication and influencing skills, with the ability to explain ML concepts to diverse audiences and steer technical direction with cross-functional stakeholders
• Experience leading technical work and coaching engineers in a collaborative team or virtual squad
• A pragmatic, iterative approach that balances a high bar for quality with the value of delivering, learning, and improving

Responsibilities

• Design, build, ship, and operate agentic LLM harness solutions for existing and new AI features
• Improve quality and reduce cost across production LLM systems, build robust evaluation capabilities
• Contribute to fine-tuning and model serving
• Set long-term technical direction for LLM harness engineering and incorporate rapid advances from research
• Navigate complex systems, propose and execute end-to-end improvements
• Act as thought partner to Engineering Managers and Heads of Engineering, lead small virtual squads
• Coach junior engineers and help the team achieve key results

Education

Bachelor’s or Master’s degree in Computer Science or related field

Tools

Kotlin

Python

SQL

Job description

At Atlassian, a Senior Machine Learning Engineer is sought to join the AI Context team, helping to design, build, and operate agentic LLM harness solutions across product features. The role is based in Sydney, NSW, with flexible work options including hybrid work.

You will work with a team of SWEs and MLEs across Sydney, Melbourne, Brisbane, and the US West Coast, shaping the long-term direction of LLM harness engineering while coaching junior engineers.