Senior Machine Learning Engineer

About the Position

We are seeking a Senior Machine Learning Engineer to join our Rovo + AI team at Atlassian. You will drive advances in AI-powered experiences, ensuring that Rovo, our intelligent teammate, continues to deliver measurable customer and business impact.

Responsibilities

• Architect and build production ML and evaluation systems that operate at scale, including datasets, simulations, automated judges, regression suites, experimentation platforms, and online quality signals.
• Advance the state of Rovo’s agentic capabilities across reasoning, planning, tool selection and use, action correctness, retrieval, memory, and long-horizon execution.
• Close the loop between evaluation and product impact: identify systemic failure modes, develop interventions, ship them to production, and establish whether they improved customer outcomes.
• Make high-leverage technical decisions across model choice, prompting, fine-tuning, data strategy, system architecture, and inference; balancing quality with latency, reliability, safety, and cost.
• Lead ambitious, cross-organizational initiatives with ML, engineering, product, analytics, research, and design partners, creating clarity and momentum where neither the problem nor the solution is well defined.
• Establish reusable methods, systems, and quality standards that raise the bar not only for Rovo Chat, but for AI-powered experiences across Atlassian.
• Multiply the impact of other engineers through technical leadership, design reviews, mentorship, and a compelling long-term vision for how we build and evaluate world-class AI products.

Requirements

• A track record of architecting and shipping large-scale ML or AI systems that deliver measurable customer and business impact.
• Deep experience with LLM-powered products, agentic systems, model evaluation, experimentation, and dataset development.
• Strong production engineering skills and the ability to remain hands-on in a modern ML stack.
• Technical leadership: setting direction, influencing across teams, and leading complex initiatives from ambiguity to production.
• Excellent product and technical judgment, including balancing quality, speed, reliability, safety, latency, and cost.
• The ability to communicate complex ideas clearly and raise the effectiveness of engineers around you through mentorship and technical leadership.

We Offer

• Competitive base pay based on geographic pay zones.
• Comprehensive benefits and perks, including health and wellbeing resources, paid volunteer days, and more.
• Flexible work arrangements, including remote work options.
• Opportunities for professional development and career growth.

About the Company

At Atlassian, we're motivated by a common goal: to unleash the potential of every team. Our software products help teams all over the planet and our solutions are designed for all types of work. Team collaboration through our tools makes what may be impossible alone, possible together.

We believe that the unique contributions of all Atlassians create our success. To ensure that our products and culture continue to incorporate everyone's perspectives and experience, we never discriminate based on race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status. All your information will be kept confidential according to EEO guidelines.

To provide you the best experience, we can support with accommodations or adjustments at any stage of the recruitment process. Simply inform our Recruitment team during your conversation with them.

To learn more about our culture and hiring process, visit go.atlassian.com/crh.

In line with local law, identity verification (which may include use of biometric data) is a condition of employment with Atlassian for employment fraud purposes.