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2,816 api engineer jobs at 1,180 companies in California

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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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2w
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API Engineer (Remote)
Stafford or Alaska or California or Colorado or Connecticut or District of Columbia or Hawaii or Louisiana or Massachusetts or Minnesota or Missouri or Nebraska or Nevada or New Hampshire or New Jersey or New Mexico or New York or North Dakota or Oregon or Puerto Rico or Rhode Island or Vermont or Washington or Wyoming or United States
RemoteFull Time
Oxley Enterprises
Oxley Enterprises: Provider of enterprise IT solutions and organizational management consulting.
No specific skills, education, or experience listed in the job text; posting states remote US eligibility and includes benefits information.
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2mo
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API Inspector
Benicia, California, United States
$90k-$150k/yr OnsiteFull Time
Team
TeamNYSE: TISI: Provides industrial asset integrity, inspection, and specialty mechanical services.
Experienced API Inspector with active API 510/570/653 certifications; field-based; strong report writing; travel required.
NDT, IDMS, digital inspection tools
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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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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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Principal API Architect, Product Engineering – Agent‑Ready APIs & Data
Pleasanton, California, United States
$206k-$310k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
12+ YOE12+ years building large-scale backend systems and APIs, 5+ years in senior architecture roles, hands-on TypeScript or Python, OpenAPI/Swagger and API governance experience, MCP familiarity, strong communication and mentoring skills.
TypeScript, Python, REST, GraphQL, SOAP, JSON, XML, WSDL, Swagger, OpenAPI, MCP, Cursor, Claude Code, GitHub Copilot, Data Cloud, SQL, Agent Factory, Trident, Gateways
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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: Provides edge-to-cloud IT infrastructure and platform services.
5+ YOE5+ years QA/software testing, customer support, or related engineering; Python proficiency; UI/API troubleshooting; Selenium/pytest experience.
Python, Selenium, pytest, Django RESTful API
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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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2h
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Staff Software Engineer, Foundation Model API
San Francisco or Mountain View
$190k-$265k/yr OnsiteFull Time
Databricks
Databricks: A unified platform for data analytics and artificial intelligence.
8+ YOE8+ years backend/infrastructure experience, distributed systems, scalable APIs, cloud-native infra, real-time serving/ML infra/GPU orchestration, strong Scala/Go/Python skills, product ownership and customer engagement.
OpenAI, Anthropic, Gemini, Qwen, GPT-OSS, Llama, SageMaker, Vertex AI, Azure ML, FMAPI, Apache Spark™, Delta Lake, MLflow, Scala, Go, Python
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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 City or Los Gatos
$270k-$410k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Provider of global streaming entertainment and video content.
Deep ad tech experience with Conversions API (CAPI) platforms, proficiency in Java or Python and advanced SQL, API debugging (curl/Postman), cloud platform knowledge, code debugging, and strong stakeholder communication.
Conversions API (CAPI), Google Tag Manager, SQL, Python, Java, curl, Postman, ETL, REST APIs
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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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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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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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5d
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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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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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3mo
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NDT Level II / CWI / API - ATS Santa Fe Springs, CA - Permanent (56244)
Santa Fe Springs, California, United States
$25-$45/hr OnsiteFull Time
Applied Technical Services
Applied Technical Services: Provides specialized testing, inspection, calibration, and forensic engineering services.
NDT Level II with CWI/API; read technical docs; adapt to schedule; data management; report results; safe work; pass drug screen; valid driver's license.
NDT methods, CWI, API, data entry
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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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