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About the Role
Atlassian is seeking a Principal Machine Learning Engineer to join the Search & Intelligence organization. This team develops Atlassian’s flagship AI products, including agentic search and chat, long-horizon agents, and capabilities that enrich Atlassian’s Teamwork Graph. They also develop frameworks, models, and infrastructure to accelerate AI feature development across the company.
Responsibilities
- Lead the development and implementation of cutting-edge machine learning algorithms and sophisticated models.
- Design system and model architectures.
- Lead rigorous experimentation and evaluation.
- Provide technical mentorship to emerging ML engineers.
- Help shape AI strategy and ensure its transformative potential is realized across Atlassian.
Requirements
- A bachelor’s or master’s degree in computer science or a related field, or equivalent practical experience.
- At least five years of relevant industry experience in machine learning, data science, or a related discipline.
- Strong programming skills in Python and one or more production languages such as Java, Kotlin, or TypeScript.
- Proficiency in SQL and experience with Spark and cloud-based data environments such as AWS or Databricks.
- Experience building, deploying, and scaling machine learning models for business applications using large, complex datasets.
- Strong communication skills, including the ability to explain data science concepts to diverse audiences and tell compelling, data-driven stories.
- A pragmatic, business-focused approach.
- An agile mindset and an appreciation for continuous iteration, learning, and improvement.
- Experience fine-tuning, post-training, and optimizing state-of-the-art large language models, embedding models, and ranking models.
- Experience developing and evaluating advanced agentic AI systems, including tool-using agents capable of planning, multi-step reasoning, and autonomous task execution.
- Experience working in consumer or B2C environments, SaaS, or enterprise and B2B products.
- A track record of solving ambiguous and complex problems by navigating uncertainty, breaking challenges into manageable components, and developing innovative, practical solutions.
Skills
- Python
- Java
- Kotlin
- TypeScript
- SQL
- Spark
- AWS
- Databricks
- Machine Learning
- Data Science
Location
- United States
Work Type
- Office
- Home
- Combination of office and home
Experience Level
- Principal
- At least five years of relevant industry experience
Education Level
- Bachelor's degree in computer science or related field
- Master's degree in computer science or related field
- Equivalent practical experience
Salary/Compensations
- Zone A: $236,700 - $309,025
- Zone B: $213,030 - $278,123
- Zone C: $196,461 - $256,491
Benefits
- Health and wellbeing resources
- Paid volunteer days
About the Company
- Atlassian is a global leader in team collaboration and productivity software, empowering teams to unleash their potential and achieve remarkable results.
- Our suite of tools, including Jira, Confluence, Trello, Bitbucket, and Rovo, is trusted by millions of users worldwide to plan, track, and manage their work effectively.
- At Atlassian, we are dedicated to building innovative tools and technologies that drive the future of work.
- Atlassian offers a wide range of perks and benefits designed to support you, your family and to help you engage with your local community.
- 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.
Equal Opportunity
- 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.
- 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.