
As a Principal Machine Learning Engineer, you will drive the development and implementation of cutting-edge machine learning algorithms, training sophisticated models, and collaborating with product, engineering, and analytics teams to build AI functionalities into Atlassian products and services. Your daily responsibilities will encompass a broad spectrum of tasks — designing system and model architectures, conducting rigorous experimentation and model evaluations, and providing guidance to emerging ML engineers. Your role is pivotal, ensuring AI's transformative potential is realized across our offerings.
Technical Leadership & Execution
Drive complex decisions that impact the work of teams and change their technical direction over multiple quarters
Regularly tackle the largest and most complex problems on the team, from technical design to launch
Set the direction of systems and capabilities, balancing progress over perfection
Determine plans-of-attack on large projects and solve complex architecture challenges
Model Development & Experimentation
Design, develop, and deploy production-grade ML models (e.g., ranking, retrieval, LLM-based systems) to optimize user experience and achieve business objectives
Conduct meticulous experimentation and model evaluations, backing decisions with data
Develop robust feature engineering practices to ingest, process, and serve features for offline training and online inference at scale
Oversee end-to-end deployment of ML solutions into production, ensuring continuous evaluation, monitoring, and improvement
Cross-Functional Collaboration
Collaborate closely with product managers, designers, and engineering teams to integrate AI/ML capabilities into products
Partner across engineering teams to take on company-wide programs spanning multiple projects
Communicate complex technical concepts clearly to both technical and non-technical stakeholders
Mentorship & Organizational Impact
Mentor and guide junior and senior engineers, fostering a culture of innovation, collaboration, and continuous learning
Actively share knowledge and expertise through mentoring and coaching beyond direct reports
Contribute to programs of work that scale across the department
Identify, solve, and bridge gaps/problems across teams using experience and expertise
Decision Making & Direction
Quickly collate and analyze key decision parameters, balancing speed, risk, and impact appropriately
Limit ambiguity and risk by experimenting and prototyping
Understand how contributions of multiple capabilities fit into larger products and platforms
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

Atlassian powers the collaboration that helps teams accomplish what would otherwise be impossible alone.
From space missions and motor racing to bugs in code and IT requests, no task is too large or too small with the right team, the right tools, and the right practices.
Over 300,000 global companies and 80% of the Fortune 500 rely on Atlassian’s software, like Jira, Confluence, Loom, and Trello, to help their teams work better together and deliver quality results on time.
With our 300,000+ customers and team of 10,000+ Atlassians, we are building the next generation of team collaboration and productivity software.
We believe the power of teams has the potential to change the world — one that is more open, authentic, and inclusive.