A

Anthropic

Builds Claude AI models with a focus on safety

Staff+ Software Engineer - Developer Productivity

Full-Time
$405k - $625k/yr
Expert
Bachelor's
Seattle, WA, USA+2 moreMore locations: San Francisco, CA, USA | New York, NY, USA
HybridAt least 25% of the time in an office is expected.
H1B Sponsorship Available

About the job

Requirements
  • Have deep experience with build systems, continuous integration and continuous delivery pipelines, and/or developer tooling in a large monorepo environment.
  • Have strong proficiency in Python, Rust, and/or Go.
  • Have experience with container orchestration and infrastructure at scale.
  • Have 15+ years of experience, excluding internships or co-ops, in a Software Engineer role building and operating large-scale developer infrastructure.
  • Have 3+ years of experience, excluding internships or co-ops, leading large-scale complex projects or teams as a tech lead.
Responsibilities
  • Own the technical strategy and roadmap for the area, translating team-level goals into concrete execution plans.
  • Define infrastructure architecture, ensuring the hardest problems are solved directly or through others.
  • Design and build scalable, reliable distributed infrastructure and shared libraries that support high-volume workloads across all engineering teams.
  • Own and evolve build environments, package management, and dependency systems to enable fast, reproducible builds.
  • Define and implement language ecosystem standards, tooling, and frameworks that drive developer productivity across research and production workloads.
Desired Qualifications
  • Have experience with continuous integration orchestration tools such as Buildkite, Jenkins, or GitHub Actions, and merge queue management at scale.
  • Have experience building or operating remote build execution systems such as Bazel Remote Execution API, BuildBarn, or BuildBuddy.
  • Have experience with Nix, NixOS, or Docker and managing large image or package sets at scale.
  • Have experience building command-line interface tools, developer-facing services, and GitHub API and automation workflows.

About the company

Anthropic builds the Claude family of AI models and sells them to businesses, software developers, and consumers, with research on making AI safe and understandable at the center of its work. In 2024 it introduced the Model Context Protocol, an open standard for connecting AI assistants to outside apps and data that OpenAI and Google adopted the next year. People use the Claude app to write and analyze files, programmers hand coding tasks to Claude Code, and companies build Claude into their own products through its API. Anthropic earns money from subscriptions, business plans, and usage-based API fees. Siblings Dario and Daniela Amodei founded Anthropic in 2021 with other former OpenAI employees, and it is based in San Francisco.

Company Size

5,001-10,000

Company Stage

N/A

Total Funding

$224.8B

Headquarters

San Francisco, California

Founded

2021

Get referred to Anthropic

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Sales are multiplying: Anthropic's yearly revenue pace topped $65 billion in July 2026, over sevenfold since December 2025.
  • IPO plans advanced: October 2026 reports describe investor meetings and a mid-November listing target; staff shares face lockups.
  • Lower office minimum: 627 of 646 Anthropic job posts in October 2026 require at least 25% office time.

What critics are saying

  • Job security rides on growth: Anthropic's IPO prospectus lists $518 billion in cloud and computing bills due in coming years.
  • Defense work stays off-limits: in September 2026, appeals judges voted 2-1 to let the Pentagon keep blacklisting Anthropic.
  • Growth is priced in: Anthropic's valuation reached $965 billion in May 2026, up from $380 billion in February.

What makes Anthropic unique

  • Investors don't control its board alone: Anthropic's independent Long-Term Benefit Trust elects a growing number of directors.
  • It isn't tied to one chipmaker: Claude runs on Nvidia GPUs plus custom AI chips designed by Google and Amazon.
  • It holds back its riskiest model: Claude Mythos 5.1, launched September 2026, goes only to vetted cyberdefenders and life scientists.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Flexible Work Hours

Paid Vacation

Parental Leave

Hybrid Work Options

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

↑ 0%

1 year growth

↑ 3%

2 year growth

↓ -3%
CNBC
Oct 11th, 2026
AI safety evaluators step up as METR raises $71M and Trump backs self-policing

Small third-party groups that test AI models, such as Model Evaluation and Threat Research (METR), Apollo Research and Transluce, are moving to the centre of the AI industry. Anthropic and OpenAI have both pledged to embed independent evaluators, and President Donald Trump has backed the idea. Questions remain over funding, access and reporting. "Who is paying for these companies to do their work?" said Suresh Venkatasubramanian, a computer science professor at Brown University. METR said it raised commitments of around $71 million in six months, up from $13.6 million in contributions in 2024. Vals AI announced a $40 million round in August. Friction is emerging. OpenAI fired three employees, two of whom said it was over their contact with outside evaluators; OpenAI disputes this.

CNBC
Oct 9th, 2026
OpenAI and Anthropic hire Trump officials as AI firms scramble to strengthen White House ties

OpenAI and Anthropic are hiring former Trump administration officials for senior roles as AI companies strengthen ties with Washington. Anthropic has appointed at least two ex-Trump officials this year, including Chris Liddell to its board and Sihao Huang as head of frontier compute strategy. OpenAI has hired at least three, including Thomas Lind for cyber and strategic risk, and Dean Ball as head of strategic futures. The moves come as frontier AI is increasingly viewed as a national security issue, with companies seeking to build relationships amid growing regulatory calls. Trump has called AI safety concerns a "hoax" whilst also suggesting law enforcement could "rein in" AI. Both companies are currently hiring for multiple political engagement roles as they prepare for potential public listings.

Yahoo Finance
Oct 9th, 2026
OpenAI's $50B revenue accounting sparks chip stock selloff, analysts call reaction 'overblown

Chip and cloud stocks edged higher in overnight trading after OpenAI's revenue disclosure sparked a sharp selloff on Thursday. Nvidia rose 0.5%, whilst Oracle and CoreWeave gained 0.7% and 0.3% respectively. The iShares semiconductor ETF added 0.03% after sliding 3.4% in the regular session. OpenAI reported roughly $50 billion in annualised revenue at the end of September, lower than the previously reported $70 billion figure. Analysts said the discrepancy stemmed from different accounting methods when comparing OpenAI's revenue with competitor Anthropic's. The Futurum Group CEO Daniel Newman called the broader market reaction "overblown", noting OpenAI could still reach $70 billion to $90 billion in revenue by year-end. In a Stocktwits poll, 48% of retail investors said they plan to buy AI-linked stocks following the dip.

NPR
Oct 9th, 2026
American tech giants face resistance over $65B data centre expansion in Australia

American tech companies are expanding data centre operations in Australia, but face growing opposition from residents and farmers. Local communities near Melbourne are protesting planned facilities, citing concerns over noise, energy consumption, and water usage. Investment in Australian data centres could exceed $100 billion by 2030, according to the Commonwealth Bank of Australia, with Microsoft and Amazon already committing funding. Companies are attracted by Australia's geographic location, renewable energy access, and democratic stability. However, the expansion faces obstacles. New regulations on water efficiency and power supply take effect next year. Australia's strict copyright protections pose challenges for AI companies seeking regulatory certainty. Recent revelations that an OpenAI agent accessed Australian government websites without authorisation have intensified scrutiny. Experts question whether AI companies should receive special treatment regarding accountability.

The Register
Oct 8th, 2026
Anthropic launches free security scanning for critical infrastructure and open-source projects

Anthropic has launched its Cyber Mission programme to help patch software vulnerabilities exposed by its own AI tools. The company acknowledges that attackers currently have the advantage, but predicts defenders will gain the upper hand within two years. The initiative focuses on two areas: a Critical Infrastructure Defense Program, partnering with firms like CrowdStrike and Palo Alto Networks to protect utilities from AI-discovered vulnerabilities, and OSS Scanner, offering free security scans to established open-source projects. According to Anthropic, AI models now find over 85% of vulnerabilities, up from 20% at the start of 2025. The programme follows recent incidents where AI agents broke into at least 20 organisations, including HuggingFace, raising concerns about AI-enabled cyberattacks.