A

Atlassian

Builds software for team planning and knowledge

Principal Machine Learning Engineer

Full-TimeDeadline 7/8/27
$196.5k - $309k+ Bonus + Commission + Equity
Expert
Mountain View, CA, USA
In Person
AI & Machine LearningApplied Machine Learning
Company Historically Provides H1B Sponsorship

About the job

Responsibilities
  • 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.
  • Design, develop, and deploy production-grade machine learning models, including ranking, retrieval, and large language model-based systems, to optimize user experience and achieve business objectives.
  • Conduct 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 machine learning solutions into production, ensuring continuous evaluation, monitoring, and improvement.
  • Collaborate closely with product managers, designers, and engineering teams to integrate artificial intelligence and machine learning capabilities into products.
  • Partner across engineering teams to take on company-wide programs spanning multiple projects.
  • Communicate complex technical concepts clearly to technical and non-technical stakeholders.
  • Mentor and guide junior and senior engineers, fostering innovation, collaboration, and continuous learning.
  • 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 and problems across teams using experience and expertise.
  • Collate and analyze key decision parameters, balancing speed, risk, and impact.
  • Limit ambiguity and risk by experimenting and prototyping.
  • Understand how contributions of multiple capabilities fit into larger products and platforms.

About the company

Atlassian builds software that helps businesses and other organizations coordinate projects, document knowledge and manage technology services. Its Jira and Confluence applications give teams shared spaces for tracking tasks and keeping decisions, plans and reference material connected to work. Software developers also use its tools to manage code, while business and IT teams organize requests and automate routine workflows. Customers pay recurring subscriptions for hosted software or self-managed licenses, with pricing linked to users and selected service levels. Atlassian was founded in 2002 and has its headquarters in Sydney, New South Wales, Australia.

Company Size

10,001+

Company Stage

IPO

Headquarters

Sydney, Australia

Founded

2002

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Simplify's Take

What believers are saying

  • Realized sales grew substantially: Atlassian reported $6.572 billion revenue, up 26%, for its fiscal year ending June 2026.
  • Relocation supports flexibility: Atlassian permits approved moves where it has legal entities, with work rights and compatible timezones.
  • Contracted revenue gives visibility: Atlassian's remaining performance obligations reached $4.8 billion at its June 2026 year-end.

What critics are saying

  • Restructuring affected employee plans: Atlassian announced approximately 1,600 job cuts in March 2026 to fund AI and enterprise sales.
  • Standard support has an endpoint: Jira and Confluence Data Center reach scheduled end of life in March 2029.
  • AI answers need human review: Atlassian's Rovo guidance warns of inaccurate or incomplete responses and recommends checking their quality.

What makes Atlassian unique

  • AI context retains source permissions: Atlassian's Teamwork Graph brings connected work data into tools including Claude and Copilot.
  • App extensions have hosted infrastructure: Atlassian's Forge supplies compute, storage and authentication for developers building within its platform.
  • Video joins project tools: Atlassian bundles Loom recording with Jira and Confluence in its Teamwork Collection.

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Benefits

Health insurance

Vision insurance

Dental insurance

Life insurance

Flexible or health savings accounts

Short-term disability insurance

Long-term disability insurance

Retirement savings plans

Paid time off

Catered lunches, wellness reimbursements, onsite fitness

Growth & Insights and Company News

Headcount

6 month growth

11%

1 year growth

16%

2 year growth

11%
Yahoo Finance
Oct 7th, 2026
Atlassian launches AMP protocol for human-AI teamwork collaboration

Atlassian has launched AMP (Agentic Multiplayer Protocol) at its Team '26 Europe conference in Amsterdam. The protocol enables AI agents to collaborate with human teams in shared workspaces rather than isolated sessions. AMP allows agents to participate in work through @mentions in Confluence, Jira comment threads, and Loom video briefs. Each agent receives a distinct identity and appears in real-time presence bars alongside human teammates. The protocol is grounded in Atlassian's Teamwork Graph, which now connects over 250 billion objects and relationships. The company has shipped over 120 enterprise capabilities in the past year. People and agents now work together more than 10 million times monthly on Atlassian's platform. Atlassian MCP now has nearly 2 million monthly active users and handles over 15 million daily tool calls. Atlassian serves over 350,000 customers worldwide, including 85% of Fortune 500 companies.

Yahoo Finance
Oct 7th, 2026
Atlassian embeds AI engineers with clients to boost enterprise adoption by 50%

Atlassian has launched its Forward Deployed Engineering programme, embedding senior applied AI engineers directly with customers to build production-ready AI solutions. The 12-week engagements focus on deploying custom Rovo agents, automations, and workflow integrations across the Teamwork Graph. The programme addresses the gap between AI adoption and measurable returns. Whilst 85% of knowledge workers use AI, only 6% of executives can demonstrate clear organisation-wide ROI, according to Atlassian research. Engaged accounts show 50% higher AI adoption rates. Early customers include Expedia, which archived 600,000 Confluence pages and saved approximately 3,200 hours annually, and Reddit, which is streamlining enterprise operations using Atlassian's AI capabilities. The collaborative model pairs Atlassian engineers with customer teams, with improvements feeding back into the platform. Internal testing showed AI agents grounded in the Teamwork Graph produced 44% higher quality answers whilst using 48% fewer tokens.

The Register
Oct 6th, 2026
Atlassian patches critical file access flaw in datacenter products

Atlassian has issued an urgent warning about a critical vulnerability affecting its datacenter products. The flaw, CVE-2026-21589, has a severity rating of 9.3 and allows unauthenticated attackers to access specific files within the web application root directory. The vulnerability impacts datacenter versions of Bitbucket, Confluence, Jira Service Management, Jira Software, Bamboo, Crowd, Crucible, and Fisheye. Atlassian warns that sensitive files may be exposed in some configurations. The company has released patches and urges users to upgrade immediately. Those unable to patch quickly should remove instances from the internet until they can apply the fix. Cloud-based Atlassian users are unaffected, as the company has already addressed the vulnerability in its software-as-a-service offering. Atlassian discontinued its datacenter products last year, encouraging users to migrate to its cloud platform.

Yahoo Finance
Oct 4th, 2026
Atlassian stock triples from 52-week low as AI fears prove overblown

Atlassian has surged more than 200% from its April low of $57, defying Wall Street's fears that artificial intelligence would devastate software companies. The collaboration software firm posted exceptional results, with fourth-quarter revenue jumping 28% year-over-year to $1.77 billion, beating analyst expectations of $1.66 billion. The company's AI platform, Rovo, embedded into flagship products Jira and Confluence, is driving growth. Annual recurring revenue from Rovo customers is growing at twice the pace of non-Rovo customers. Rovo-powered agents produce 44% more accurate answers whilst consuming 48% fewer tokens. Operating costs rose just 12% despite strong revenue growth, enabling Atlassian to swing to a $139.1 million profit from a year-earlier loss. Adjusted profit soared 83% to $473.1 million. Despite the rally, shares trade at a price-to-sales ratio of 7.1, below the three-year average of 9.8.

Business Wire
Sep 18th, 2026
Atlassian to Acquire Loom to Supercharge Team Collaboration

Atlassian Corporation (NASDAQ: TEAM), a leading provider of team collaboration and productivity software, today announced it has entered into a definitive ag...