Staff+ Software Engineer, Anthropic
Experimentation
$405-485k
More information about location
AI safety and research company
Be an early applicant
AI safety and research company
1001+ employees
Be an early applicant
$405-485k
More information about location
1001+ employees
Company mission
To create reliable, interpretable, and steerable AI systems.
Role
Who you are
- Have deep experience with configuration management, feature flagging, and/or experimentation platforms in a large-scale environment
- Have strong proficiency in Python, Rust and/or Go
- Are obsessed with developer productivity and reducing friction in how teams configure, test, and ship changes
- Have experience with container orchestration and infrastructure at scale
- Have excellent communication skills and enjoy supporting internal partners to improve their development experience
- Are excited about designing foundational systems and are comfortable working independently on ambiguous, high-impact technical challenges
- Have 15+ years (not including internships or co-ops) of experience in a Software Engineer role, building and operating large-scale developer infrastructure
- Have 3+ years (not including internships or co-ops) of experience leading large scale, complex projects or teams as an engineer or tech lead
- Experience with config or experimentation platforms such as Statsig, GrowthBook, LaunchDarkly, Optimizely, Unleash, or similar (including building such systems in-house)
- Experience designing experimentation frameworks — randomization, assignment, metrics pipelines, and statistical analysis for A/B testing at scale
- Experience with dynamic configuration systems and safe rollout mechanisms (gradual rollouts, kill switches, targeting rules)
- Experience building CLI tools, developer-facing services, and APIs/automation workflows that integrate config and experimentation into existing CI/CD pipelines
- Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience
- We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed
What the job involves
- Anthropic's Infrastructure organization is foundational to our mission of developing AI systems that are reliable, interpretable, and steerable. The systems we build determine how quickly we can train new models, how reliably we can run safety experiments, and how effectively we can scale Claude to millions of users — demonstrating that safe, reliable infrastructure and frontier capabilities can go hand in hand
- Developer Productivity owns the end-to-end experience of how engineers and researchers at Anthropic develop, build, test, and ship code at scale
- This role focuses on the configuration and experimentation systems that let teams safely roll out changes, run controlled experiments, and make data-driven decisions across our products and infrastructure — from feature flagging and dynamic configuration to A/B testing platforms that support both research and production workloads
- Own the technical strategy and roadmap for config and experimentation infrastructure, translating team-level goals into concrete execution plans and partnering with teams focused on deployment, testing, and more
- Maintain and enhance the architecture for feature flagging, dynamic configuration, and experimentation systems, ensuring the hardest problems get solved — whether by you directly or by working through others
- Design and build scalable, reliable distributed infrastructure and shared libraries that support high-volume experimentation and config workloads across all engineering teams
- Own and evolve the platforms and tooling that let engineers and researchers safely ship config changes, run experiments, and measure impact
- Define standards, tooling, and frameworks for experimentation and configuration management that drive developer productivity across research and production workloads
Application process
- Deadline to apply: None. Applications will be reviewed on a rolling basis
Our take
Funded by Google and founded by ex-OpenAI employees, Anthropic has emerged as one of the leading companies in AI, focused on building reliable and safe AI systems. Since its launch, the company has rapidly grown into a major player in the industry, with its AI assistant Claude now widely recognized as a strong competitor to ChatGPT.
Like other chatbots, Claude is accessible through a conversational interface and supports a wide range of text-generation and reasoning tasks. A key point of differentiation remains its emphasis on safety, with Anthropic's "Constitutional AI" approach aiming to produce more aligned and less harmful outputs than earlier generations of AI systems.
While Claude has received significant praise for its performance and alignment, some users have notes areas for improvement, particularly in technical domains such as complex mathematics and precision in grammar. However, with substantial backing freom major tech players and multi-billion-dollar funding rounds, Anthropic has firmly established itself as a long-term competitor in the AI space.
Now the company is continuing to refine Claude's capabilities while expanding globally, including growing its presence in Europe. And its ongoing commitment to responsible AI development put it in a position to be not just a competitor, but a key influence on the direction of the industry as a whole.
Freddie
Company Specialist at Welcome to the Jungle
Insights
190% employee growth in 12 months
Company
Funding (last 2 of 15 rounds)
May 2026
$65bn
SERIES H
Feb 2026
$30bn
SERIES G
Total funding: $124.3bn
Company benefits
- Comprehensive health, dental, and vision insurance for you and your dependents
- Inclusive fertility benefits via Carrot Fertility
- 22 weeks of paid parental leave
- Flexible paid time off and absence policies
- Mental health support for you and your dependents
- Competitive salary and equity packages
- Optional equity donation matching at a 1:1 ratio, up to 25% of your equity grant
- Retirement plans with competitive matching
- Life and income protection plans
- $500/month flexible wellness and time saver stipend
- Commuter benefits
- Annual education stipend
- Home office stipends
- Relocation support for those moving for Anthropic
- Daily meals and snacks in the office
Company HQ
SoMa, San Francisco, CA
Leadership
Dario Amodei
(Co-Founder & CEO)Prior to co-founding Anthropic in 2021, Dario spent almost 5 years at OpenAI as a Team Lead for AI safety and as the Vice President of Research. They also worked as a Research Scientist at Google.
Jared Kaplan
(Co-Founder & Chief Science Officer)Jared hs been a Professor at John Hopkins University since 2012. They are also an experienced Researcher having worked previously at OpenAI and the SLAC National Accelerator Laboratory.
Jack Clark
(Co-Founder)Jack is an experienced Reporter having worked previously at the Register and Bloomberg. They also worked for OpenAI in Strategy and Communications and as a Policy Director.
Sam McCandlish
(Co-Founder & CTO)Sam graduated from Stanford University with a PhD in Theoretical Physics. They previously worked as a Research Lead at OpenAI.
Tom Brown
(Co-Founder)Tom previously worked as a Member of the Technical Staff for both OpenAI and Google Brain.
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