Anthropic · 7 months ago
Software Engineer, Model Context Protocol
Seattle, WA
Full-time
Hybrid
Mid, Senior Level
$300K/yr - $560K/yr
5+ years expAnthropic is an AI research company focused on the safety and alignment of AI systems with human values. They are seeking a Software Engineer for their Model Context Protocol team to design and implement core protocol features, while collaborating with the open-source community and supporting developers in building on MCP.
Artificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMachine Learning
Responsibilities
Design and implement core protocol features in collaboration with the open source community
Build and maintain high-quality SDKs and reference implementations
Drive technical discussions and decision-making through public RFCs and GitHub issues
Support both external developers and internal teams building on MCP
Develop showcase implementations that demonstrate MCP's capabilities
Write clear, comprehensive technical documentation
Participate in code reviews and provide mentorship to community contributors
Help shape the technical direction of the protocol while ensuring backward compatibility
Qualification
Required
5+ years of software engineering experience
Experience contributing to or maintaining open source projects
Comfortable working in public and engaging with developer communities
Strong technical communication skills, both written and verbal
Experience designing and implementing protocols, APIs, or developer platforms
Passionate about developer experience and building for other engineers
Can balance competing needs from various stakeholders while maintaining technical excellence
Experience with TypeScript/JavaScript and Python ecosystems
Care about security, scalability, and backwards compatibility
Excited about AI and its potential impact on developer tools
Bachelor's degree in a related field or equivalent experience
Preferred
Track record of successful open source contributions or project maintenance
Experience with AI/ML systems or large language models
Background in developer tools or platform engineering
Experience with protocol design and versioning
Public speaking experience at technical conferences
Experience building and supporting enterprise integrations
Benefits
Optional equity donation matching
Generous vacation and parental leave
Flexible working hours
A lovely office space in which to collaborate with colleagues
Company
Anthropic
Anthropic is an AI research company that focuses on the safety and alignment of AI systems with human values.
501-1000 employees
H1B Sponsorship
Anthropic has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (105)
2024 (13)
2023 (3)
2022 (4)
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$33.74BKey Investors
Lightspeed Venture PartnersGoogleAmazon
2025-09-02Series F· $13B
2025-05-16Debt Financing· $2.5B
2025-03-03Series E· $3.5B
Leadership Team
Dario Amodei
CEO & Co-Founder
Daniela Amodei
President and co-founder
Recent News
Longevity.Technology
2026-01-14
2026-01-14
Company data provided by crunchbase