Together AI
Staff Engineer, API Core Platform
San Francisco · Staff+ · Full-time
Sponsorship not specified$240k-$275kDetected 75 days ago
TypeScriptJavaGoC++Next.jsAlgorithmsAWSKubernetesTerraformCI/CDGraphQLCybersecurityIncident ResponseLoad BalancingZero TrustResearch
About the role
- Together AI is seeking an experienced Backend Engineer to found Together's API Platform team within the Production Foundations organization.
- In the near term, you will improve and standardize the backend API layer within our primary Next.js monolith, raising the bar on reliability, performance, and consistency.
Responsibilities
- Design and drive the evolution of Together's API platform, defining how APIs are built, versioned, secured, tested, and operated across the company
- Own and improve the backend API layer within our primary Next.js monolith, raising the bar on consistency, reliability, and performance
- Architect and lead the transition toward scalable, purpose-built API platforms optimized for different traffic patterns and product surfaces
- Write and maintain critical-path platform code that multiple services and product teams depend on
- Design and implement robust authentication, authorization, and identity-aware access patterns across public and internal APIs
- Drive API data modeling and schema generation strategies to ensure long-term maintainability and developer ergonomics
- Partner with infrastructure and security teams to maintain a strong security posture and evolve toward zero-trust architectures
- Proven experience building or significantly evolving an API platform used by multiple teams or customer-facing products
Requirements
- 8+ years of experience building and operating large-scale, distributed backend systems in production environments
- Expert-level proficiency in one or more of Golang, TypeScript, C++, or Java
- Deep expertise in API performance and scalability, including caching strategies, rate limiting, parallelization, fan-out control, and graceful degradation
- Strong experience designing and implementing production-grade authentication and authorization systems for customer-facing APIs
- Bachelor's or Master's degree in Computer Science, Computer Engineering, or equivalent practical experience
Nice to have
- Experience with GraphQL or schema-based API federation systems
- Experience evolving APIs from monoliths to modular, platform-oriented architectures
- Experience designing and operating API schema generation and validation systems
- Experience designing and operating multi-region, globally distributed API systems
- Experience designing horizontally scalable API systems capable of handling high request volume and burst traffic patterns
- Experience running production workloads in Kubernetes-based environments
- Experience with AWS networking, traffic management, and load balancing
- Experience with Cloudflare or CDN-level API performance optimization
Compensation
- We offer competitive compensation, startup equity, health insurance and other competitive benefits.
- The US base salary range for this full-time position is: $240,000 - $275,000 + equity + benefits.
- Our salary ranges are determined by location, level and role.
- Individual compensation will be determined by experience, skills, and job-related knowledge.
Equal opportunity
- Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.
Visa & Work Authorization
- t opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more
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This listing is sourced directly from Together AI's careers page and normalized into a canonical job model.