Staff+ Software Engineer (Product Sandboxing)

Anthropic; York and North Yorkshire; On-site; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Health insurance

Fertility benefits

Parental leave

Flexible time off

Mental health support

Equity packages

Equity donation matching

Retirement plans

Life and income protection

Wellness stipend

Commuter benefits

Education stipend

Home office stipend

Relocation support

Meals in office

Job summary

Anthropic in the United Kingdom invites experienced backend/platform engineers to lead scalable distributed systems and infrastructure. You will own architecture decisions and drive multi-month projects, partnering with research to productize capabilities used by millions of customers.

The role requires strong fundamentals in cloud-native design, container orchestration, and drive for robust, scalable solutions, with a product-focused mindset.

Qualifications

• 8+ years of backend/platform engineering experience.
• Experience with cloud infrastructure and distributed systems.
• Proficiency in Python, Go or Rust and container orchestration.

Responsibilities

• Scope and drive multi-month platform projects end-to-end.
• Align across organizations and make architectural decisions.
• Partner with research to productize capabilities and scale products.

Skills

Service-oriented architectures

Networking

Systems design

Cloud infrastructure (AWS/GCP/Azure)

Container orchestration (Kubernetes)

Python

Go

Rust

Distributed systems

Tech lead experience

Education

Bachelor’s degree

Tools

Kubernetes

AWS

GCP

Azure

Job description

• We build and run the secure execution environment behind Claude’s agentic capabilities
• When Claude writes and runs code, browses the web, or uses a computer, that happens on infrastructure our team owns
• We work at the intersection of systems engineering and security
• The goal is to make untrusted code execution safe, fast, and reliable enough that product teams don’t have to think about it
• This is the layer between the model and the outside world, and it has to hold up at scale for every Anthropic product
• We’re hiring engineers who have experience building for containerized workloads and have a keen eye for building products used by millions of customers
• You’ll independently scope complex, multi-month projects, drive cross-org alignment through ambiguous problem spaces, and make architectural decisions that shape how Anthropic builds and scales its products
• You’ll partner directly with research to productize cutting-edge capabilities, and will have lasting impact on the platform that hundreds of thousands of companies and internal/external engineers depend on every day

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

Have strong fundamentals in service-oriented architectures, networking, and systems design, ideally having owned both the technical vision and execution of a foundational platform system end to endCan navigate ambiguity and make sound technical decisions independently, and have ideally operated in 0 to 1 and more mature team or company settingsHave experience with cloud infrastructure (GCP, AWS, or Azure), container orchestration (Kubernetes), and/or multi-cloud networkingAre proficient in Python, Go, Rust, or similar systems languagesTake full ownership of your work—from design through deployment and operationsHave a minimum of 8 years of practical experience as a backend or platform engineer building scalable distributed systems, ideally operating at tech lead level or equivalent distributed systems, cloud-native products, developer tools, or external developer facing productsTake a product-focused approach to platform work and care about building solutions that are robust, scalable, and easy to usMinimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experienceRequired field of study: A field relevant to the role as demonstrated through coursework, training, or professional experienceWe encourage you to apply even if you do not believe you meet every single qualification