Senior ML Performance Engineer

The job

LIVE Live feed (private-sector employer) Source: The Muse public API · Data: listed 2026-11-02

Job description

Engineering | Mountain View, United States or Remote | Remote, Remote | San Francisco, United States | Seattle, United States

Working at Atlassian

Atlassians can choose where they work whether in an office, from home, or a combination of the two. That way, Atlassians have more control over supporting their family, personal goals, and other priorities. We can hire people in any country where we have a legal entity. Interviews and onboarding are conducted virtually, a part of being a distributed-first company.

Be the backbone of Atlassian's Agentic AI Integration Products : The Agentic AI Integrations team is responsible for the industry-leading Rovo MCP Server, Agent to Agent integrations as well as on the mission to catapult Atlassian value by leveraging cutting-edge AI capabilities like Claude Skills, ChatGPT/Claude Apps etc., essentially we will be working on anything and everything with AI integrations into the Atlassian ecosystem.

Knack to work on bleeding-edge AI technologies: Passionate to explore and learn AI transformative technologies and quickly pivot from prototyping new initiatives to building highly-scalable enterprise-grade AI products that will be used by 1000s of developers and enterprise users.

ML performance, quality, and systems acumen-ship: Experience in tuning MCP or agent-facing servers for latency, reliability, token efficiency, and tool-selection quality; including dynamic tool discovery, context and response optimization, observability, automated evals, and semantic retrieval using embeddings, vector search, hybrid ranking, and reranking.

• Design, build, and evolve MCP servers, tools, and agent-facing APIs with concise schemas, predictable errors, safe mutations, and clear outcome-oriented contracts.
• Develop accessible, responsive, and performant React and TypeScript experiences that make agent capabilities, MCP tools, and A2A interactions easy to discover, configure, and use.
• Build reusable components, design-system patterns, and frontend architecture that support consistent, scalable user experiences across AI-powered products.
• Integrate GraphQL and REST APIs, SDKs, streaming responses, and real-time data into reliable, user-friendly AI workflows.
• Optimize token and context efficiency through dynamic tool discovery, lazy loading, bounded responses, pagination, selective field retrieval, caching, and reduced tool-call loops.
• Improve end-to-end performance and reliability across front-end clients, gateways, MCP servers, search services, and downstream product systems through observability, tracing, SLOs, and production diagnostics.
• Build semantic retrieval capabilities using embeddings, chunking, vector indexes, hybrid search, metadata and permission filters, ranking, reranking, and freshness strategies.
• Define and operate AI/ML quality programs with JTBD-based evaluations, benchmark datasets, groundedness and relevance metrics, hallucination and bias detection, safety testing, and human feedback.
• Integrate automated evaluations into CI/CD and release gates to detect regressions across model, prompt, tool, and retrieval changes.
• Implement enterprise security and partner cross-functionally to deliver maintainable, well-tested AI integrations, including OAuth 2.1, tenant isolation, audit logging, prompt-injection defenses, and confirmation flows for high-impact actions.

Explore around this job

Field: Technology Sub-niche: Data, analytics and AI All jobs at Atlassian Jobs in California Jobs in Mountain View, CA California state guide

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About the role

This is a Senior Level role in the Technology field (Data, analytics and AI) at Atlassian. Senior roles usually expect substantial experience, ownership of results and often the ability to guide others.

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How to prepare and behave

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• Read the whole description and match your examples to its requirements; use the same words the posting uses where they are true for you.
• Research the employer before the interview: what it does, who its customers are and recent news; prepare two or three questions about the work.
• Arrive early (or log in early for a video call), dress one step above the daily dress code, and test your camera and audio beforehand.
• Answer with short stories: the situation, what you did and the result. Give numbers when you have them and never invent them.
• Be honest about gaps; say what you did to learn and how fast you can close them.
• Ask about the team, the first 90 days, how success is measured and the schedule; do not open with salary and time off.
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• Send a short thank-you message within a day, mentioning one thing you discussed.
• Have code, data work or projects you can show, and be ready to think aloud: many technical interviews test how you reason, not only the answer.

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The city

Mountain View, CA is not one of the cities with its own page in our guides, so here is the state: California.

The state economy in brief

California is in the West region (Pacific division) and has 39,287,376 residents (the 1st largest of the 50 states and DC by population), with a median age of 37.9. Its economy produced about $4,438,822 million in the latest four quarters (BEA), 1st among states and DC, equal to $112,983 per resident.

Jobs and the labour market

The unemployment rate was 5.1% in 2026M09, which is 49th lowest of 51 (1st is the lowest). Employers had job openings equal to 3.6% of employment, 37th highest of 51, a measure of how hard it is to hire. The median wage across all occupations is $58,240 a year ($28.00 an hour), 14% above the national median ($58,240 against $50,980).

What people do and what it pays

The occupations with the most jobs in California are Home Health and Personal Care Aides (970,150 jobs, median $34,320); Fast Food and Counter Workers (449,840 jobs, median $42,280); Retail Salespersons (376,460 jobs, median $38,440); Laborers and Freight, Stock, and Material Movers, Hand (355,500 jobs, median $44,710); Registered Nurses (338,940 jobs, median $140,270). Among occupations with at least 2,000 jobs, the best paid are Airline Pilots, Copilots, and Flight Engineers (median $353,900); Psychiatrists (median $353,500); General Internal Medicine Physicians (median $313,890). Compared with the nation, the state is most specialised in farming, fishing, and forestry (4.1 times the national share of workers) and healthcare support (1.5 times the national share of workers).

Cost of living, taxes and workplace rules

Prices are above the national average in California: the regional price parity is 110.7 against 100 for the whole country (51st lowest of 51). Median gross rent is $2,036 a month and the median household income $99,122, so a year of rent equals 24.6% of income; the median home value is $734,700. The state minimum wage is $16.90 (the higher of state and federal rates applies to most workers). State income tax on wages: Graduated, top rate 13.30%. It is not a right-to-work state, so union contracts can require fees from covered workers. It runs a state paid family and medical leave programme.

People and commuting

27.0% of residents were born abroad and 37.1% of adults hold a bachelor's degree or higher. Among workers, 65.7% drive alone, 2.9% use public transit and 17.2% work from home; 19.4% commute 45 minutes or more.

State guide: California →

Where to live

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Career paths

We could not match this title to one occupation, so here are the other sub-niches in Technology, where your skills may carry over:

Cybersecurity (366) Software engineering (1880) Cloud, IT and infrastructure (504) Product management (412)

Distances

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The employer

Atlassian is the employer in this listing. See all its open jobs here →

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What it is like to work at a company (culture, schedules, benefits) is not in the source data, so we do not describe it. Read the description and ask the questions under "How to prepare".

Other open jobs at Atlassian

Similar jobs

Same sub-niche: Data, analytics and AI

More jobs in Mountain View, CA

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FAQ

What is the Senior ML Performance Engineer job at Atlassian?

A senior level role in technology (data, analytics and ai) listed 6 days ago. The full description is on this page and on The Muse.

Where is this job?

Mountain View, CA.

How do I apply?

Use the "View this job and apply on The Muse" button. AtiveSite does not receive applications.

How much does it pay?

The listing does not publish pay, and we could not match the title to one official occupation.

What is the cost of living there?

See the state or country guide for rent, income and taxes.

How old is this listing?

It was posted on 2026-11-02 (6 days ago). Jobs older than 90 days are not shown.

Are there similar jobs?

Yes: browse data, analytics and ai jobs in California.

Sources and terms

• Job data: The Muse public API (listing dated 2026-11-02). The job disappears from this site when it disappears from the source.
• Wages and projections: BLS OEWS (May 2025) and Employment Projections 2025–35.
• City and county figures: Census Bureau ACS 2020–2024, BEA, BLS QCEW and LAUS, NASA POWER climatology; distances from Census Gazetteer coordinates.

AtiveSite is not affiliated with or endorsed by The Muse, the employer or any government agency, and does not process applications. Verify every detail with the employer before acting.

Sources

• BLS OEWS (wages and employment by occupation, May 2025)
• BLS Employment Projections 2025–35
• BLS Local Area Unemployment Statistics
• BLS JOLTS
• BLS State and Metro Area Employment
• Census Bureau American Community Survey (via Census Reporter)
• BEA GDP by state and Regional Price Parities
• IRS 2026 tax adjustments
• U.S. Department of Labor, minimum wage by state
• Tax Foundation state income tax rates 2026
• USAJOBS
• USCIS
• U.S. Department of State, visas
• NASA POWER climatology
• GeoNames / Census Gazetteer (coordinates)