Senior Machine Learning Engineer

Working at Atlassian
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• Search Quality Definition & Evaluation
  
  • Define and track core retrieval metrics (Hit@K, Precision, Recall) to objectively measure the effectiveness of the search tool across different internal datasets.
  • Collaborate with domain experts to curate "Golden Datasets" (Ground Truth) to benchmark passage ranking and chunking strategies against real-world agent queries.
  • Develop automated regression suites that flag degradation in retrieval quality before code reaches production.
• Latency Optimization & High-Scale Engineering
  
  • Optimize the retrieval path to ensure low-latency responses, critical for multi-step agent chains where search creates compounding delays.
• Operational Excellence & Quality "Dissat" Response
  
  • Serve as the primary on-call engineer for "Search Dissatisfaction" (Dissat), investigating instances where agents failed tasks due to poor information retrieval.
  • Perform root cause analysis on bad queries to determine if the fix requires re-indexing, better chunking logic, or updated embedding models.
  • Monitor system health and search saturation, proactively scaling infrastructure to handle bursty workloads from concurrent agents.

Compensation
At Atlassian, we strive to design equitable, explainable, and competitive compensation programs. To support this goal, the baseline of our range is higher than that of the typical market range, but in turn we expect to hire most candidates near this baseline. Base pay within the range is ultimately determined by a candidate's skills, expertise, or experience. In the United States, we have three geographic pay zones. For this role, our current base pay ranges for new hires in each zone are:
This role may also be eligible for benefits, bonuses, commissions, and equity.
Please visit go.atlassian.com/payzones for more information on which locations are included in each of our geographic pay zones. However, please confirm the zone for your specific location with your recruiter.
Benefits & Perks
Atlassian offers a wide range of perks and benefits designed to support you, your family and to help you engage with your local community. Our offerings include health and wellbeing resources, paid volunteer days, and so much more. To learn more, visit go.atlassian.com/perksandbenefits .
About Atlassian
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 .