Principal Machine Learning Engineer
Active / Open Until Filled
Apply NowPrincipal Machine Learning Engineer
Active / Open Until Filled
Apply NowJob role insights
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Date posted
September 28, 2026
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Closing date
Not Disclosed (Open Until Filled)
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Location
Mountain View
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Career level
Principal / Lead Level
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Experience
8+ Years
Description
Atlassian Position Summary
- Company: Atlassian Pty Ltd
- Job Title: Principal Machine Learning Engineer
- Job Requisition ID: REQ-2026-1102
- Department: Engineering
- Primary Location: Mountain View, United States (Atlassian US Hub)
- Work Model: Team Anywhere (Flexible Remote & Hybrid)
- Employment Type: Full Time
- Career Level: Principal / Lead Level (8+ Years)
- Base Compensation Range: USD 196,461 – 309,025 per annum
- Application Deadline: Open Until Filled (Rolling Review)
View Official Job Details & Apply at Atlassian Careers →
Direct link to authentic job posting on Atlassian’s verified employer portal
About Atlassian & The Team Anywhere Culture
Atlassian is an Australian-founded global software titan dedicated to unleashing the potential in every team. From industry-defining collaboration and issue-tracking platforms like Jira and Confluence, to agile productivity solutions including Trello, async video communication via Loom, and next-generation AI workflows powered by Atlassian Rovo, our technologies empower millions of professionals across 190+ countries worldwide.
Central to our workplace innovation is Team Anywhere, a pioneering distributed-first organizational model. Atlassians can choose where they accomplish their best work—whether collaborating from home, working from one of our state-of-the-art office hubs in Sydney, Bengaluru, Mountain View, San Francisco, Amsterdam, Manila, or Gdańsk, or balancing a tailored hybrid schedule. Rather than mandating rigid in-office quotas, we measure success by team impact, transparent collaboration, and high-velocity execution across time zones.
Role Overview & Strategic Context
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.
Key Responsibilities & Daily Impact
In this position, you will be trusted to take deep ownership of mission-critical outcomes. Key areas of focus include:
Technical Leadership & Execution
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Drive complex decisions that impact the work of teams and change their technical direction over multiple quarters
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Regularly tackle the largest and most complex problems on the team, from technical design to launch
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Set the direction of systems and capabilities, balancing progress over perfection
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Determine plans-of-attack on large projects and solve complex architecture challenges
Model Development & Experimentation
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Design, develop, and deploy production-grade ML models (e.g., ranking, retrieval, LLM-based systems) to optimize user experience and achieve business objectives
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Conduct meticulous experimentation and model evaluations, backing decisions with data
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Develop robust feature engineering practices to ingest, process, and serve features for offline training and online inference at scale
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Oversee end-to-end deployment of ML solutions into production, ensuring continuous evaluation, monitoring, and improvement
Cross-Functional Collaboration
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Collaborate closely with product managers, designers, and engineering teams to integrate AI/ML capabilities into products
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Partner across engineering teams to take on company-wide programs spanning multiple projects
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Communicate complex technical concepts clearly to both technical and non-technical stakeholders
Mentorship & Organizational Impact
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Mentor and guide junior and senior engineers, fostering a culture of innovation, collaboration, and continuous learning
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Actively share knowledge and expertise through mentoring and coaching beyond direct reports
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Contribute to programs of work that scale across the department
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Identify, solve, and bridge gaps/problems across teams using experience and expertise
Decision Making & Direction
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Quickly collate and analyze key decision parameters, balancing speed, risk, and impact appropriately
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Limit ambiguity and risk by experimenting and prototyping
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Understand how contributions of multiple capabilities fit into larger products and platforms
Interested in this opportunity at Atlassian?
Qualifications, Technical Skills & Experience
We are seeking candidates who demonstrate technical craftsmanship, intellectual curiosity, and a natural instinct for collaborative problem-solving:
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.
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.
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Compensation Philosophy & Employee Benefits
At Atlassian, we design equitable, competitive, and transparent compensation packages. In addition to a competitive base salary of USD 196,461 – 309,025 per annum, eligible Atlassians receive:
- Equity Ownership: Restricted Stock Units (RSUs) ensuring every Atlassian shares directly in the long-term growth and success of the company.
- Flexible Work Setup: Generous home office stipends to create an ergonomic, high-productivity remote workspace.
- Comprehensive Health & Wellness: Premium medical, dental, vision, and mental health coverage tailored to your regional location.
- Paid Leave & Volunteerism: Competitive paid time off, generous parental leave policies, and paid Foundation days dedicated to volunteering and community service.
- Continuous Growth: Annual learning stipends, internal mentorship programs, and regular company-wide innovation days (ShipIt).
Atlassian Core Values That Guide Our Work
Our values are not mere slogans on a wall—they govern how we build products, make tough business decisions, and treat one another:
- Open company, no bullshit: We believe in radical transparency, constructive honesty, and making information accessible by default.
- Play, as a team: We win and learn together. We encourage low-ego collaboration, psychological safety, and celebrating collective victories.
- Build with heart and balance: We craft software with passion, empathy, and craftsmanship while upholding personal wellbeing and long-term sustainability.
- Don’t #@!% the customer: Customer trust is our most treasured asset. We prioritize user outcomes and platform reliability above all else.
- Be the change you seek: Continuous improvement is everyone’s responsibility. If you see an opportunity to make something better, you are empowered to act.
Recruitment Verification & Anti-Scam Notice
Protect your privacy and personal data. Atlassian will never request financial payments, banking credentials, or fees at any stage of the recruitment process. Official communications originate exclusively from @atlassian.com email domains. Always verify and submit your application through the official Atlassian career portal linked below.
Candidate Application & Interview Journey
- Online Review: Review the official position overview on Atlassian’s portal and submit your CV and profile details.
- Recruiter Conversation: An initial phone or video discussion to discuss your background, motivations, and explore team alignment.
- Technical / Domain Exploration: An interactive technical interview, system architecture discussion, or case study deep dive with team members.
- Values & Collaboration Dialogue: A dedicated conversation centered on Atlassian values, team dynamics, and cross-functional leadership.
- Offer & Onboarding: Seamless virtual onboarding with your team and full equipment setup delivered to your location.
Ready to Unleash Your Potential with Atlassian?
Take the next step in your career with a world-class team solving complex software challenges at global scale.
