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1,946 api developer jobs at 789 companies in Sunnyvale, CA

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
1w
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MuleSoft API Developer
San Francisco, California, United States
$61k-$104k/yr HybridFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
3+ YOE3+ years as a MuleSoft API Developer; strong MuleSoft Anypoint Platform and Mule ESB experience; REST/JSON API design; integration with Salesforce; API design, deployment, testing; MuleSoft certification preferred.
MuleSoft Anypoint Platform, Mule ESB, MuleSoft Anypoint Studio, Salesforce
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3mo
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Senior API Integration Engineer
Sunnyvale or San Francisco
$165k-$200k/yr OnsiteFull Time
Crusoe
Crusoe: Provides energy-efficient cloud infrastructure powered by stranded and renewable energy.
7+ YOE7+ years in API development or integration engineering; 3+ years with Workato (preferably Workato ONE); extensive experience with REST, OAuth 2.0, SAML, JSON/XML, iPaaS; ERP/CRM integrations; GDPR/SOC 2 compliance; Jira/CI‑CD workflows; HR data models familiarity.
Workato, REST, OAuth 2.0, SAML, JSON, XML, Jira, Confluence, CI/CD
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2w
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Software Engineer, Developer API
New York City or San Francisco or United States or Canada or United Kingdom
$168k-$330k/yr HybridFull Time
Ramp
Ramp: Financial operations platform for corporate cards and spend management.
5+ YOE5+ years backend engineering, experience building APIs/platforms, hands-on with Python, Temporal, and Postgres, familiarity with AI coding agents, strong ownership and developer-experience focus.
Python, Temporal, Postgres
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3mo
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Backend Engineer, API
Palo Alto, California, United States
$130k-$220k/yr HybridFull Time
Pylon
Pylon: API-first infrastructure for automated mortgage lending and operations.
Proficient with TypeScript, GraphQL, NestJS, PostgreSQL; API design; event-driven architecture; strong problem solving; ownership.
TypeScript, GraphQL, NestJS, PostgreSQL, Temporal.io, Event-driven architecture
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1mo
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Platform Engineer- GraphQL/API
Dublin or San Jose or New York City or Shanghai
HybridFull Time
eBay
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
3+ YOE3+ years software engineering experience; strong Java and Spring Boot skills; GraphQL and API design experience; CI/CD (Maven/Jenkins); Kubernetes and cloud-native deployments; focus on reliability, scalability, and developer experience.
Java, Spring Boot, GraphQL, REST, CI/CD, Maven, Jenkins, Kubernetes
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3mo
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Integrations Support Engineer 5 - Ads Conversion API
New York or Los Gatos
$270k-$410k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Global video streaming and media production service.
Experience with ad tech, Conversions API, data integrations, SQL, Python/Java, REST APIs, and partner-facing support.
SQL, Python, Java, REST API, Postman, curl, Cloud Computing
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1mo
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X Developer Platform – Forward Deployed Engineer, X API
New York or Palo Alto
$180k-$440k/yr HybridFull Time
xAI
xAI: Develops advanced artificial intelligence systems to understand the universe.
5+ YOE5+ years in a customer-facing technical role; strong DevEx focus; expert in API-driven development; proficient in multiple languages; excellent communication and project management.
Python, JavaScript, TypeScript, Java, Rust, Scala
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6d
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Staff Software Engineer, API Platform
San Francisco or Seattle
OnsiteFull Time
Stripe
Stripe: Provides online payment processing and financial infrastructure for businesses.
12+ YOE5+ Mgmt12+ years technical experience,5+ years strategic technical leadership,experience with API design and infrastructure,proficient in Java/Ruby/Python/Go,strong communication and problem-solving skills.
Java, Ruby, Python, Go, Kafka, Kubernetes
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1d
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Senior Software Engineer, Foundation Model API
San Francisco, California, United States
$160k-$225k/yr OnsiteFull Time
Databricks
Databricks: A unified platform for data analytics and artificial intelligence.
8+ YOE8+ years backend or infrastructure engineering; distributed systems, scalable APIs, cloud-native experience; real-time serving or ML infrastructure; strong Scala, Go, or Python skills.
Scala, Go, Python, OpenAI, Anthropic, Gemini, Qwen, GPT-OSS, Llama, SageMaker, Vertex AI, Azure ML, Apache Spark, Delta Lake, MLflow
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2mo
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Quality Assurance Engineer - Cloud, UI & API
Cupertino, California, United States
$106k-$214k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
5+ YOE5+ years in QA/software testing or related roles; strong Python, UI/API testing; test automation; customer-facing support experience.
Python, Selenium, pytest, Django REST framework
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2mo
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Quality Assurance Engineer - Cloud, UI & API
Cupertino, California, United States
$106k-$214k/yr OnsiteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides global edge-to-cloud technology solutions and IT infrastructure services.
5+ YOE5+ years QA experience; Python; UI/API testing; test automation; customer interaction; US citizenship; degree in CS or related field.
Python, Selenium, pytest, Django RESTful API
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1mo
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Software Engineer, API SDK
San Francisco or Seattle or New York City
$293k-$385k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
7+ YOE7+ years of professional engineering experience; experience building SDKs; design and implement SDKs for multiple languages; collaborate across teams.
Python, Node.js, Golang, Java, Ruby, SDK generation
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2w
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Senior Software Engineer, Integrations (API Sources & Automation) - Hiring Sprint
San Francisco, California, United States
$196k-$255k/yr HybridFull Time
Airbyte
Airbyte: Open-source data integration platform for automated data movement.
5+ YOE5+ years building backend systems and developer tooling in Python; experience designing APIs/frameworks and leveraging AI/LLM APIs; strong systems thinking, automation, mentoring, and ability to drive ambiguous initiatives.
Python, Java, Airbyte CDKs, Connector Builder, MCP, SDKs, CLI, LLM APIs
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1mo
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Member of Technical Staff (Software Engineer, API Platform)
San Francisco or New York City
$220k-$405k/yr OnsiteFull Time
Perplexity
Perplexity: AI-powered search engine providing conversational answers with citations.
5+ YOE5+ years backend engineering with Python, Go, or Rust; strong high-traffic API design, AWS and Kubernetes experience, CI/CD and DevOps fluency; experience with AI APIs a plus.
Python, Go, Rust, AWS, Kubernetes, CI/CD
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6d
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Senior Software Engineer - API Platform & Client Tooling
Bellevue or Livingston or New York City or San Francisco or Sunnyvale
$153k-$204k/yr OnsiteFull Time
CoreWeave
CoreWeaveNASDAQ: CRWV: Cloud platform providing GPU-accelerated infrastructure for AI workloads.
Production Go experience, API design and versioning, client tooling/SDK/CLI or provider work, code-generation or compiler/tooling experience preferred, cross-team collaboration and mentorship.
Go, gRPC, protocol buffers, Buf, ConnectRPC, Terraform Plugin Framework, Cobra, CWIC
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2mo
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Software Engineer 5 - Ads Signals Conversion API
New York City or Seattle or Los Angeles or Los Gatos
$388k-$619k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Provider of global streaming entertainment and video content.
Proven experience building Conversion APIs and high-volume event processing; expertise with streaming architectures (e.g., Kafka, Flink); strong ad-tech and privacy knowledge; excellent communication and collaboration skills.
Kafka, Flink
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2w
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Operations Engineer - Peptide API
Menlo Park, California, United States
$110k-$125k/yr OnsiteFull Time
Hims & Hers Health
Hims & Hers HealthNYSE: HIMS: Provides telehealth consultations and personalized health products online.
2+ YOEBachelor's in chemical/chemistry/biochemistry or related, 2+ years pharma/biotech/chemical manufacturing experience, peptide/API manufacturing or complex chemical process experience preferred, cGMP knowledge, hands-on troubleshooting, documentation and SOP experience.
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2w
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API Platform and Ecosystem Development Manager
Montreal or San Francisco or Toronto
HybridFull Time
MaintainX
MaintainX: Provides mobile-first software for maintenance and asset management.
4+ YOE4+ years managing software development teams building APIs and integrations; strong foundation in distributed systems, API design (REST/GraphQL), data modeling, CI/CD, and developer/platform experience.
REST, GraphQL, CI/CD, SDKs, ERP, iPaaS, BI
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1mo
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Staff Software Engineer, API Proxy
Sunnyvale or Kirkland
$207k-$301k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
8+ YOEBachelor's degree or equivalent experience; 8 years C++ programming; 5 years testing/launching software; 5 years building large-scale infrastructure or distributed systems; 3 years software design; strong communication and leadership preferred.
C++, Stubby, gRPC, HTTP, Envoy Proxy, Enterprise Security Framework (ESF) PDP, One Model Context Protocol (OneMCP)
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1mo
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Sr Software Development Engineer, Product Engineering – API Platform & Agentic AI
Pleasanton, California, United States
$176k-$264k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
8+ YOE8+ years software engineering experience; 5+ years with TypeScript or Python; Bachelor's in CS/Engineering or equivalent; strong algorithms, API design (REST/GraphQL/SOAP/OpenAPI), testing, observability, and mentoring skills.
TypeScript, Python, OpenAPI, Swagger, REST, SOAP, GraphQL, JUnit, ScalaTest, Postman, Mockito, JaCoCo, Scoverage, Git, Cursor, Claude Code, GitHub Copilot, MCP
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