Principal Machine Learning Engineer

Overview

As a Principal Machine Learning Engineer, you will drive the development and implementation of cutting‑edge machine learning algorithms, train sophisticated models, and collaborate with product, engineering, and analytics teams to build AI functionalities into Atlassian products and services. Your daily responsibilities will span designing system and model architectures, conducting rigorous experimentation and evaluations, and providing guidance to emerging ML engineers. Your role is pivotal, ensuring AI’s transformative potential is realized across our offerings.

Responsibilities

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 more.

Equal‑Opportunity Statement

We believe that the unique contributions of all Atlassians create our success. We do not discriminate based on race, religion, national origin, gender identity or expression, sexual orientation, age, marital status, veteran status, or disability status. All your information will be kept confidential in accordance with EEO guidelines.

Accessibility & Accommodations

We can support with accommodations or adjustments at any stage of the recruitment process. Simply inform our recruitment team during your conversation with them.

Legal & Verification

In line with local law, identity verification—including potential use of biometric data—is a condition of employment with Atlassian for employment fraud purposes.