Atlassian

Senior Machine Learning System Engineer - Agentic Search & Intelligence

Atlassian$171K — $269K *
US-AnywhereRemote in Seattle, WA
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Deep experience in machine learning, information retrieval, recommendation, ranking, NLP, or related fields.
  • Experience building scalable ML systems in production environments.
  • Strong software engineering skills to implement reliable systems based on modeled ideas.
  • Ability to design experiments and evaluations for complex ML applications.
  • Capability to approach ambiguous problems using first principles reasoning.
  • Proven track record of impactful technical or product outcomes.
  • Excellent technical communication skills for cross-team influence.

Responsibilities

  • Build systems for AI agents to discover and reason over enterprise knowledge.
  • Develop agent-friendly search interfaces, APIs, and result formats.
  • Enhance enterprise retrieval through advanced techniques like embeddings and LLM reranking.
  • Implement procedural intelligence for agents to select appropriate tools for tasks.
  • Design evaluation systems for agent behavior and tool selection quality.

Benefits

  • Comprehensive health and wellbeing resources.
  • Paid volunteer days to promote community engagement.
  • Access to a variety of perks designed for employee support.
Full Job Description
Overview

Responsibilities

The way people find and use knowledge at work is changing. Search is no longer just about returning ten relevant results. AI agents need to understand what a user is trying to accomplish, decide where and how to search, reason across multiple sources, select the right tools and procedures, identify missing information, and assemble trustworthy context before taking action.

We are building the intelligence layer that makes this possible across Atlassian and the broader enterprise ecosystem through context-layer. Our team works at the intersection of information retrieval, machine learning, LLMs, agentic systems, and large-scale distributed systems. We are solving problems ranging from state-of-the-art retrieval and ranking to multi-step search, tool intelligence, context synthesis, and agent-facing search infrastructure.

If you are excited about defining what search looks like in the agent era, this is an opportunity to work on problems where many of the best solutions have yet to be invented.

What you’ll work onYou will help build systems that enable AI agents to discover information, reason over enterprise knowledge, and choose the right capabilities to complete complex tasks.Depending on your interests and expertise, you may work across areas such as:

  • Agentic Search — Build systems that plan, decompose, reformulate, and iteratively execute searches across multiple steps and data sources.

  • Agent Search Experiences — Make search agent-friendly, define the interfaces, APIs, contracts, result formats, citations, and search primitives through which agents interact with enterprise knowledge.

  • Retrieval & Relevance — Advance enterprise retrieval through embeddings, hybrid retrieval, learning-to-rank, LLM reranking, query understanding, and large-scale relevance optimization.

  • Procedural Intelligence — Teach agents to understand what tools and procedures are available, what they can do, and which capability should be used for a particular task.

  • Evaluation & Learning — Develop offline and online evaluation systems for retrieval quality, agent behavior, tool selection, grounding, and end-to-end task success.

These problems operate at enterprise scale, where permissions, freshness, latency, trust, heterogeneous data, and multi-tenant systems all matter.

Compensation

At Atlassian, we strive to design equitable, explainable, and competitive compensation programs. We follow consistent hiring practices and account for each candidate's skills, knowledge, and experience when setting base pay within the range.

Please visit go.atlassian.com/payzones for more information on which locations are included in each of our geographic pay zones. However, please confirm the zone for your specific location with your recruiter.

This role may also be eligible for benefits, bonuses, commissions, and equity.

Pay Ranges

In The United States, we have three geographic pay zones. For this role, our current base pay ranges for new hires in each zone are:

Zone A: $206,100 - $269,075

Zone B: $185,490 - $242,168

Zone C: $171,063 - $223,332

Qualifications

What we’re looking forWe care more about technical depth, judgment, and demonstrated impact than a specific background.Strong candidates will have several of the following:

  • Deep experience in machine learning, information retrieval, recommendation, ranking, NLP, LLMs, or adjacent areas.

  • Experience building ML systems that operate at meaningful production scale.

  • Strong software engineering fundamentals and the ability to turn modeling ideas into reliable production systems.

  • Experience designing experiments and evaluations for complex ML systems.

  • Ability to reason from first principles about ambiguous problems rather than simply applying existing techniques.

  • A track record of driving meaningful technical or product outcomes.

  • Strong technical communication and the ability to influence engineers and leaders across teams.

Experience in any/some of the following is especially relevant:

  • Agentic systems, multi-step reasoning, search agents, or LLM tool use

  • Retrieval-augmented generation and context engineering

  • Tool discovery, tool ranking, MCP, or capability routing

  • Evidence aggregation, grounding, citations, or hallucination reduction

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

Atlassian is a leading provider of collaboration, development, and issue tracking software for teams. With over 194,000 customers worldwide, including 85 of the Fortune 100, Atlassian is changing the way teams work. Our products help teams organize, discuss, and complete shared work. Atlassian has a unique business model that allows us to deliver software to teams of all sizes, from small startups to large enterprises. Our products are available on a subscription basis, with no upfront fees or long-term commitments. Atlassian was founded in 2002 and is headquartered in San Francisco, California.
Learn more about Atlassian
Size
6,433 employees
Market Cap
$31.9 billion
Industry
Net Income
-$1.1 billion
Founded
2002
5 Year Trend
+34.9%
Revenue
$1.8 billion
NASDAQ

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