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26 api test engineer jobs at 20 companies in Missouri

2mo
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Checkmate API Developer
Clayton or Kansas City or United States
RemoteFull Time
Husch Blackwell
Husch Blackwell: A nationwide firm providing industry-focused legal and litigation services.
2+ YOEMaster's in CS/Information Systems required; 2+ years software development experience. Must have .NET/.NET Core, C#, SQL Server, Entity Framework Code First, REST/JSON, Azure Function Apps, Microsoft Azure Web/Api/Logic Apps, ETL, unit testing, and Power BI experience.
.NET, .NET Core, C#, SQL Server, Entity Framework Code First, REST API, JSON, ETL, Azure Function Apps, Microsoft Azure Web Apps, Microsoft Azure Api Apps, Microsoft Azure Logic Apps, Microsoft Power BI
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1mo
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Test Engineer II
United States or California or New Jersey or New York or Washington or Hawaii or Alaska or Maryland or Connecticut or Rhode Island or Massachusetts or Nevada or Oregon or Arizona or Colorado or Wyoming or Texas or North Dakota or Minnesota or Missouri or Illinois or Wisconsin or Florida or Georgia or Michigan or Ohio or Virginia or Pennsylvania or Delaware or Vermont or New Hampshire or Maine or Utah or Idaho or Montana or New Mexico or South Dakota or Nebraska or Kansas or Oklahoma or Iowa or Arkansas or Louisiana or Mississippi or Alabama or Tennessee or Kentucky or Indiana or South Carolina or North Carolina or West Virginia
$77k-$142k/yr RemoteFull Time
Mercury Insurance
Mercury InsuranceNYSE: MCY: Provider of personal and commercial insurance coverage.
3+ YOEBachelor's in CS or related (or equivalent experience), 3+ years industry experience, automation and API testing experience (Java/Python, Selenium, TestNG, Postman/SoapUI), JIRA/Confluence proficiency.
Java, Python, Selenium, TestNG, Postman, SoapUI, JIRA, Confluence
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6d
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Senior Test Automation Engineer
St. Louis, Missouri, United States
HybridFull Time
Enterprise Mobility
Enterprise Mobility: Provider of vehicle rental and diverse mobility solutions.
3+ YOEMust be authorized to work in the U.S., reside in St. Louis area, 3+ years automation testing experience across web/UI/API, experience with Selenium/Playwright/Cypress, API testing, SQL, and source control.
Selenium, Playwright, Cypress, Cucumber, Postman, SQL, Git, Bitbucket, Jira, Zephyr, Confluence, Microsoft Word, Microsoft Excel
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4d
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Test Automation Engineer I
Kansas City, Missouri, United States
OnsiteFull Time
Americo
Americo: Provides life insurance, annuities, and Medicare supplement insurance products.
Foundational QA skills, familiarity with C#, Selenium WebDriver, API testing (REST, SoapUI, Postman), junior college or equivalent IT experience, and strong analytical and troubleshooting skills.
C#, Selenium WebDriver, REST, SoapUI, Postman
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5d
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Sr. Quality Engineer
United States or Alabama or Arizona or California or Colorado or Connecticut or Florida or Georgia or Idaho or Illinois or Indiana or Iowa or Kansas or Louisiana or Maryland or Massachusetts or Michigan or Minnesota or Missouri or Mississippi or North Carolina or Nebraska or New Jersey or Nevada or New York or Ohio or Oklahoma or Oregon or Pennsylvania or South Carolina or Tennessee or Texas or Utah or Virginia or Washington or Wisconsin or Wyoming
$120k-$130k/yr RemoteFull Time
Storable
Storable: Provides technology platform for storage and specialty real estate operators.
5+ YOE5+ years QA/quality engineering experience, strong test strategy, API and data validation, SQL, CI/CD familiarity, test automation experience, and practical use of AI-assisted tools.
Cypress, Selenium, TestNG, Cucumber/Gherkin, SQL, GitHub, GitLab, Jira, Confluence, Node.js, TypeScript, JavaScript, Codex, Claude Code, Cursor, GitHub Copilot, ChatGPT
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3w
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Quality Engineer
Saint Louis, Missouri, United States
OnsiteFull Time
KNOWiNK
KNOWiNK: Provider of digital poll book and election management software.
2+ YOE2+ years SDET/test engineering experience; proficiency in Python, JavaScript, or Java; experience with Selenium, Cypress, or Playwright; API testing (Postman/REST Assured); CI/CD integration; Agile experience and strong analytical/communication skills.
Python, JavaScript, Java, Selenium, Cypress, Playwright, CI/CD, Postman, REST Assured, JMeter, K6, LoadRunner, iOS, Android, AWS, Azure, GCP, Docker
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3w
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Senior Software Engineer
Kansas City, Missouri, United States
OnsiteFull Time
CarePortal
CarePortal: Technology platform connecting communities to support children in crisis.
Proven production software experience in object-oriented languages (PHP, Java, C#, Python), REST API and SQL schema design, SOLID principles, test-first discipline (unit/integration), discovery participation, and strong written communication.
PHP, Java, C#, Python, SQL, PHPUnit, Pest, Dusk, Laravel, CI/CD, REST API, AI tools
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3w
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Mechanical Engineer 1 (3892)
Blue Springs, Missouri, United States
$68k-$84k/yr OnsiteFull Time
Fike
Fike: Manufactures industrial fire and explosion protection safety systems.
2+ YOEBachelor's in Mechanical Engineering (required) with 2 years post-degree experience. Experience in product design, testing and analysis, preparing drawings, using design software, applying industry standards (ASME, API, NFPA), and supporting manufacturing.
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3w
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Senior Software Engineer
Kansas City, Missouri, United States
OnsiteFull Time
CarePortal
CarePortal: Connects children and families in crisis with local support.
Production experience in an object‑oriented language (PHP, Java, C#, Python), REST API and SQL schema design, SOLID principles, test‑first development (PHPUnit/Pest/Dusk), reading unfamiliar codebases, product discovery involvement, and clear written communication.
PHP, Java, C#, Python, SQL, PHPUnit, Pest, Dusk, Laravel, CI/CD
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4d
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Integration QA Engineer
St Louis, Missouri, United States
OnsiteFull Time
Oneview Healthcare
Oneview HealthcareASX: ONE: Sells digital patient engagement and clinical workflow software.
5+ YOE5+ years QA or integration testing experience; expertise testing APIs/integration engines, CI/CD, SQL, cloud platforms; experience with Jira and test management; healthcare standards knowledge desirable.
REST, SOAP, Mirth Connect, HL7, FHIR, TestRail, Jira, Octopus, CI/CD, SQL, AWS, Azure, LLM
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2mo
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Sr. Android Engineer (Tulsa, OK, US, 74101)
Tulsa or Dallas or Houston or Kansas City or Lincoln or Little Rock or Memphis or Oklahoma City or Phoenix or Salt Lake City or San Antonio or Springfield or St. Louis
OnsiteFull Time
BOK Financial
BOK FinancialNASDAQ: BOKF: Provides commercial, consumer banking, and wealth management services.
8+ YOE8+ years software engineering; 3-5 years building production Android apps with Kotlin and Jetpack Compose; strong API, CI/CD, testing experience.
Kotlin, Jetpack Compose, AWS, REST APIs, JUnit, Espresso, Mockito, Firebase, New Relic, CircleCI, Fastlane, GitHub Copilot, Claude
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1mo
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IVR QA Engineer - R01566923
Saint Louis or Coppell or New York or California
RemoteContract
Brillio
Brillio: Provides digital transformation and big data analytics consulting services.
8+ YOEExperience testing IVR/contact-center solutions (Amazon Connect), API/backend integrations, AWS services, test design and automation; strong QA/SDLC knowledge and stakeholder communication.
Selenium, Zephyr, Cucumber, Cyara, Amazon Connect, AWS Lambda, S3, API Gateway, CloudWatch, REST Assured, Avaya, Genesys, Hammer
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3w
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Quality Assurance Engineer
Shelton or Indiana or Ohio or Louisiana or Iowa or New Hampshire or Delaware or North Carolina or Utah or Montana or Oklahoma or Virginia or Arkansas or Alabama or Missouri or Pittsburgh or Nevada or San Antonio or Tampa or St. Petersburg or Mississippi or Orlando or Tennessee or New Mexico or Kansas or Maitland or Phoenix or Idaho or West Virginia or Gilbert or Maine or Pennsylvania or Nebraska or Sunrise or Port St. Lucie or South Carolina or Georgia or Wisconsin or Texas or Dallas or Florida or Connecticut or Arizona or Kentucky
HybridFull Time
HealthPlanOne
HealthPlanOne: Digital marketplace for health insurance and Medicare plans.
3+ YOEBachelor's in Computer Science or related, 3+ years QA experience, strong QA methodologies, test plan and case creation, test management tools (Jira/Bugzilla), automation (Mabl), SOAP/REST API knowledge, SQL, HTML, JavaScript.
Jira, Bugzilla, Mabl, SQL, SOAP, REST, HTML, JavaScript, Scrum, Kanban
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6d
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*Senior Software Engineer
Kansas City, Missouri, United States
OnsiteFull Time
H&R Block
H&R BlockNYSE: HRB: Provides income tax preparation and small business financial services.
5+ YOEBachelor's degree or equivalent, 5+ years web and hybrid mobile development, experience with Angular, .NET, Ionic, cloud/DevOps, unit testing, and mentoring.
Angular, HTML5, CSS3, TypeScript, JavaScript, jQuery, Bootstrap, Node.js, JSON, C#, ASP.NET, SQL, WebAPI, DevTools, VS Code Debugger, Ionic, Capacitor, Karma, Jasmine, Microsoft Azure, Microsoft Azure DevOps, Terraform, Datadog, Azure Application Insights, Nginx, TestFlight
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6d
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*Senior Software Engineer
Kansas City, Missouri, United States
OnsiteFull Time
H&R Block: A provider of tax preparation and related financial services investing in associate development and digital innovation.
5+ YOEBachelor's in CS/IT or equivalent, 5+ years web and hybrid mobile development experience (or Master's+3), expertise with Angular, .NET/C#, Ionic/Capacitor, Azure, Terraform, Datadog, and unit testing.
Angular, HTML5, CSS3, TypeScript, JavaScript, jQuery, Bootstrap, Node.js, JSON, C#, ASP.NET, SQL, WebAPI, DevTools, VS Code Debugger, Ionic, Capacitor, Karma, Jasmine, Azure, Azure DevOps, Terraform, Datadog, Azure Application Insights, Nginx, TestFlight
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5d
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Senior Mobile Developer
Utah or Wisconsin or Alaska or Arkansas or Washington or Arizona or Virginia or Alabama or Texas or Pennsylvania or Oregon or Oklahoma or Ohio or Nevada or Nebraska or Montana or Mississippi or Minnesota or Michigan or Massachusetts or Maryland or Maine or Louisiana or Kansas or Iowa or Indiana or Idaho or Florida or Delaware or Connecticut or Missouri or Colorado or California or Wyoming
$125k-$135k/yr RemoteFull Time
Harris Computer
Harris Computer: Provides mission-critical vertical market software and service solutions.
8+ YOEExpertise in Kotlin and Swift, modern mobile UI frameworks, mobile architectures and DI, REST API integration, mobile testing, CI/CD tooling, AI-assisted development experience, bachelor's or equivalent, 8+ years software development.
Kotlin, Swift, Jetpack Compose, SwiftUI, The Composable Architecture, MVVM, Koin, Retrofit, OkHttp, URLSession, JUnit, Mockito, Robolectric, Espresso, Compose UI test, XCTest, XCUITest, Gradle, Swift Package Manager, Bitrise, Fastlane, GitHub Copilot, Claude, Cursor, ChatGPT
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2w
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Software Developer
Toledo or Ohio or Michigan or Texas or Florida or Missouri or Oregon
RemoteFull Time
Double A Solutions
Double A Solutions: We build SaaS products to automate manual business processes.
4+ YOEBachelor's in CS or related; 4+ years .NET (C#/VB.NET) web development; experience with ASP.NET, HTML5, JavaScript, jQuery, MVC, CSS; MySQL or SQL Server; APIs/SOAP/XML; Git; strong debugging and testing skills; remote role limited to specific US states.
Microsoft .NET, C#, VB.NET, JSON, SOAP, XML, ASP.NET, HTML5, JavaScript, jQuery, AJAX, MVC, CSS, MySQL, Microsoft SQL Server, Git
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1w
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Full Stack Developer
Kansas City or United States
$85k-$117k/yr RemoteFull Time
Syms Strategic Group
Syms Strategic Group: Provides IT and professional services to federal government agencies.
8+ YOE8+ years building RESTful APIs and back-end services in Java/NodeJS, Angular front-end experience, cloud (AWS/Azure) experience, Git/GitHub, unit/integration testing, and U.S. citizenship with Public Trust eligibility.
Java, NodeJS, Angular, C#, .Net, TypeScript, Electronic Data Interchange X.12 (EDI), AWS, Azure, API Gateway, Lambda, S3, CloudWatch, Git, GitHub, JUnit, Jest, JIRA, Docker, ECS, EKS, Microsoft Teams
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1w
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Senior Software Engineer and Consultant
Saint Louis, Missouri, United States
RemoteFull Time
LaunchCode
LaunchCode: Nonprofit providing free tech education and job placement services.
5+ YOE5+ years .NET and SQL Server experience, T-SQL and JavaScript proficiency, strong OOP and relational database knowledge, debugging/testing skills; Bachelor\u0002s in CS preferred.
Microsoft .NET, Microsoft SQL Server, T-SQL, JavaScript, Blazor, jQuery, REST API, XML, EDI
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1w
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Power Apps / QA Developer - Part Time
St. Louis or Fort Lee
RemotePart Time, Contract
Chameleon Integrated Services
Chameleon Integrated Services: Provides IT systems integration and cybersecurity for federal agencies.
4+ YOEActive Secret clearance; 4+ years in application development/Power Platform/QA; 2+ years developing Power Apps; Power Automate, Dataverse/SharePoint/SQL experience; testing, deployment, troubleshooting, and documentation skills.
Power Apps, Power Automate, Power BI, Azure, Microsoft 365, Dataverse, SharePoint, SQL, Azure Functions, APIs
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