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77 api test engineer jobs at 64 companies in Vacaville, CA

1w
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Test Engineer III
San Francisco, California, United States
$135k-$165k/yr OnsiteFull Time
HeartFlow
HeartFlowNASDAQ: HTFL: Provides AI-driven non-invasive cardiac diagnostic software and analysis.
3+ YOE3+ years test engineering experience with hands-on automation; proficiency with UI and API automation; familiarity with regulated SaMD testing and QMS documentation.
Selenium, Playwright, REST Assured, Postman, Karate, Pact.io, Python, TypeScript, JavaScript, Java, C#, GitHub Actions, Jenkins, GitLab CI, AWS, k6, Locust, JMeter, Gatling
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2mo
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Principal Software Development Engineer in Test
San Francisco or Milpitas
$160k-$170k/yr OnsiteFull Time
Saviynt
Saviynt: Provides AI-powered identity governance and cloud security platforms.
9+ YOE3+ Mgmt9+ years in Software QE with 3+ years leading QE teams; strong leadership, API testing, and CI/CD experience; Bachelor's in CS or related field.
Jenkins, Docker, Kubernetes, Git, Sonar, Automation frameworks
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2mo
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Software Development Engineer in Test, Retail and Marcom Engineering
Sunnyvale or San Francisco Bay Area
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
3+ YOEBachelor's in CS or 3+ years experience; Node.js/TypeScript; Playwright/WebdriverIO; API testing (REST/GraphQL); Python scripting a plus.
Node.js, TypeScript, Python, Playwright, WebdriverIO, REST, GraphQL, GitHub Actions, Jenkins, Harness, REST-assured
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2w
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Principal Software Engineer: Distributed Systems (Config, Test, & Deployment)
Austin or New York City or San Francisco or Washington
$200k-$288k/yr HybridFull Time
Cloudflare
CloudflareNYSE: NET: Provides security and performance services for internet properties.
10+ YOE10+ years software engineering experience, technical leadership across orgs, expertise in distributed systems, strong typed language mastery, API design, experience with LLMs, Kubernetes, RocksDB and large-scale systems.
Kubernetes, RocksDB, LLMs, Prodspec and Annealing
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1mo
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Manager, Test Automation
Alameda, California, United States
$131k-$261k/yr OnsiteFull Time
Abbott
AbbottNYSE: ABT: Manufactures medical devices, diagnostics, and nutritional health products.
10+ YOE3+ Mgmt10+ years in software quality/test automation with 3+ years leading engineers; hands-on in automation frameworks; mobile and API testing; experience with CI/CD and regulated environments.
PyTest, Playwright, Jest, REST Assured
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4d
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Technology, Software Development Engineer in Test (SDET), Vice President
Chicago or Miami or New York City or San Francisco
$110k-$140k/yr OnsiteFull Time
BTIG
BTIG: Provides global institutional trading and investment banking services.
3+ YOE3+ years SDET experience, strong Playwright and TypeScript skills, CI/CD integration, API testing, AI-assisted tooling and agent architecture familiarity.
Playwright, TypeScript, OpenCode, Claude Code, Codex, GitHub Actions, Jenkins, OpenAPI, REST
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1mo
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Manager, Test Automation
Alameda, California, United States
$131k-$261k/yr OnsiteFull Time
Abbott
AbbottNYSE: ABT: Provides medical devices, diagnostics, and science-based nutritional products.
10+ YOE3+ Mgmt10+ years in software quality or test automation, 3+ years leading engineers; hands-on automation framework experience; mobile and API testing; HIPAA and GDPR compliance; strong collaboration.
PyTest, Playwright, Jest, REST Assured
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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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1mo
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Senior Security Engineer
San Francisco or New York
$130k-$250k/yr HybridFull Time
Chime
ChimeNasdaq: CHYM: Provides mobile banking and financial tools for everyday consumers.
2+ YOE2–6+ years in security or software engineering; strong coding skills (Python, Go, Ruby); cloud (AWS/GCP) and APIs; experience with automation and security testing; excellent communication and collaboration.
Python, Go, Ruby, AWS, GCP
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2d
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Product Engineer
San Francisco, California, United States
$130k-$500k/yr OnsiteFull Time
Mercor
Mercor: Connecting expert human intelligence with frontier AI model development.
3+ YOE3+ years software engineering experience; strong backend fundamentals (API design, data modeling, distributed systems, relational databases); full-stack familiarity (React/TypeScript); experience with LLM-powered features and AI coding tools; strong testing, debugging, and product intuition.
React, TypeScript, Cursor, Claude Code, GitHub Copilot, Codex
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3w
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QA/UAT Engineer
Toronto or Vancouver or San Francisco or Denver or New York City
$100k-$150k/yr RemoteFull Time
Nylas
Nylas: Provides APIs for email and calendar integration.
3+ YOE3+ years QA/SDET experience; strong test automation, API and browser testing, Go familiarity, CI/CD and cloud-native tooling, and experience with AI-assisted testing tools.
Go (Golang), gRPC, REST, Playwright, Cypress, Selenium, Claude Code, Codex, Cursor, Postman, grpcurl, k6, Docker, Kubernetes, GitHub Actions, kubectl, GitOps, TypeScript, Python
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1mo
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Staff Machine Learning Engineer
San Francisco or Minneapolis
HybridFull Time
Shipt
Shipt: Provides same-day delivery services from local retailers via app.
5+ YOE5+ years of machine learning and backend software engineering; backend in Go/Java and Python; embeddings, similarity search, ranking models; ML pipelines; distributed systems; SQL/NoSQL; API serving; A/B testing.
Go, Java, Python, MLflow, Kubeflow, Airflow, REST, gRPC, Model servers, SQL, NoSQL
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2d
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Senior AI Platform Engineer Contract
San Francisco, California, United States
OnsiteContract
Nextdata
Nextdata: Provides an operating system for building autonomous data products.
Hands-on experience building backend services, agentic AI apps, RAG/retrieval systems, SQL and vector search integration, API development, and production controls (access, audit, testing).
LangChain, LangGraph, Python, SQL, Databricks, Snowflake, BigQuery, Spark, DuckDB, Postgres, OAuth, OIDC, SAML, SSO, RBAC, ABAC, SCIM, MCP
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1mo
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Software Engineer - New Revenue
San Francisco or Seattle
$140k-$235k/yr HybridFull Time
DocuSign
DocuSignNASDAQ: DOCU: Provides electronic signature and agreement management software solutions.
5+ YOE5+ years software product development; 3+ years building JavaScript/TypeScript web apps with React; backend services in TypeScript/JavaScript/C#; unit and functional testing; Agile/Scrum, CI/CD, Git; BS in CS; experience with Python/Java and third-party APIs.
JavaScript, TypeScript, React, Redux, Angular, C#, Python, Java, Git, CI/CD, Scrum
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2mo
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Quality Engineer
San Francisco or Oakland
$105k-$130k/yr HybridFull Time
Workers' Compensation Insurance Rating Bureau of California
Workers' Compensation Insurance Rating Bureau of California: Collects and analyzes California workers' compensation insurance data.
5+ YOEBachelor's in CS/engineering required, 5+ years in software quality engineering, strong .NET/C# and Visual Studio experience, automated testing with Playwright/Cypress/Selenium, API testing, Azure DevOps, CI/CD, SQL, unit test frameworks, and strong communication skills.
Playwright, Cypress, Selenium, .NET, C#, Visual Studio, SoapUI, Postman, Fiddler, Azure DevOps, Azure, NUnit, XUnit, MSTest, PowerShell, Splunk, SQL
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2w
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Staff Systems Engineer - Software Systems
Emeryville or Santa Clara
$170k-$247k/yr OnsiteFull Time
Atomic Machines
Atomic Machines: Develops AI-powered robotic platforms for autonomous micro-scale manufacturing.
7+ YOE7+ years building complex software systems; strong software architecture skills; extensive Python experience; familiarity with C++, Rust, or Go; distributed systems, gRPC, REST APIs, IPC, embedded/real-time, robotics integration, and automated testing/CI/CD.
Python, C++, Rust, Go, gRPC, REST APIs, IPC, CI/CD
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1mo
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Software Engineer - SDET
San Francisco or New York City or London or Sydney
$170k-$240k/yr OnsiteFull Time
Sigma Computing
Sigma Computing: Cloud-native analytics platform featuring a spreadsheet-style interface.
5+ YOE5+ years building and maintaining testing software; strong CS fundamentals; testing and quality engineering expertise; experience with back-end testing, API/integration testing, CI/CD, and multi-cloud environments.
K6, Rust, Go, Python, SQL, CI/CD, GCP, AWS, Azure
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1mo
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Senior Quality Engineer, Performance and Analytics
New York City or Reno or San Ramon
$114k-$142k/yr HybridFull Time
Ridgeline
Ridgeline: Cloud-native platform for investment management operations.
5+ YOE5+ years in quality engineering for SaaS; experience validating performance analytics (TWR, Brinson, P&L), APIs, databases, cloud platforms, automated testing, and collaborating with product and engineering teams. Must be U.S. work authorized.
Claude Code, Cursor, GitHub Copilot, ChatGPT, SQL, OLAP, Columnar, AWS, Azure, Google Cloud, APIs, databases, ETL
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2w
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Senior Quality Engineer
Budapest or Berlin or Paris or San Francisco or Singapore
HybridFull Time
greehill
greehill: Provides digital twin technology for urban forest management.
Strong software engineering background, experience building test automation frameworks, familiarity with Playwright/Cypress/Selenium, static code analysis, API and web testing, CI/CD integration, and mentoring developers.
Playwright, Cypress, Selenium, TypeScript, NodeJS, React, .NET, GitHub Actions, Azure DevOps, Docker, CI/CD
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3w
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Senior Engineer - Security Products (Backend APIs)
San Francisco, California, United States
$181k-$217k/yr HybridFull Time
Fastly
FastlyNYSE: FSLY: Provides edge cloud platform for content delivery and cybersecurity.
5+ YOE5+ years engineering experience with production Go; 3+ years building public APIs; strong RESTful API design, testing, observability, and on-call experience; ability to author design docs and lead end-to-end projects.
Go, Terraform, CI/CD, OpenAPI, OAuth, JWT, SAML, RBAC, AI coding agents
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