SDET jobs in United States

Explore 254 matching jobs.

BlackSky

Senior Software Engineer, Design in Test (SDET)

BlackSky

Posted: 10/19/2026
Distributed SystemsPythonRayC++Go
Leidos

Systems Integration and Test Engineer

Leidos

Posted: 10/19/2026
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Leidos

Senior Systems Integration – Test Engineer

Leidos

Posted: 10/19/2026
DockerLinuxMicroservicesPythonSeleniumShell ScriptingUnix
Leidos

System Integration and Test Engineer

Leidos

Posted: 10/19/2026
Leidos

Lead Systems Integration – Test Engineer

Leidos

Posted: 10/19/2026
DockerLinuxMicroservicesSeleniumUnix
Leidos

Lead System Integration and Test Engineer

Leidos

Posted: 10/19/2026
SAIC

Automation Test Engineer

SAIC

Posted: 10/19/2026
JavaScriptLinuxNode.jsPythonSeleniumShell ScriptingSOAPSQLTypeScript+1 more
B5 Recruiting

Senior Software Development Engineer in Test

B5 Recruiting

Posted: 10/19/2026
AndroidiOSIoTJavaScriptJestReactReact NativeSDLCTypeScript
Supermicro

Optical Transceiver Test Engineer

Supermicro

Posted: 10/19/2026
AssemblyPython
Cerebras

Senior SDET, Release Integration Testing

Cerebras

Posted: 10/19/2026
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Acuity

Senior Electronic Test Engineer

Acuity

Posted: 10/19/2026
ERP
Sierra Space

RF Test Engineer III, Clearance Required

Sierra Space

Posted: 10/19/2026
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Mercor

Electrical Test Automation Engineer

Mercor

Posted: 10/18/2026
PythonC++
Regions Bank

Test Automation Engineer

Regions Bank

Posted: 10/16/2026
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Second Dinner

Senior SDET, MARVEL SNAP

Second Dinner

Posted: 10/16/2026
Jenkins.NET
Thrive

Senior AI & Automation Architect

Thrive

Posted: 10/16/2026
AzureCloudPythonSQL
Fresenius Kabi USA

Senior Engineer – Software Test

Fresenius Kabi USA

Posted: 10/15/2026
ASP.NETLinuxPythonSeleniumSQLVMware.NET
Hewlett Packard Enterprise

Electrical Hardware Integration, Test Engineer

Hewlett Packard Enterprise

Posted: 10/15/2026
AssemblyLinux
Hewlett Packard Enterprise

Electrical Hardware Integration – Test Engineer

Hewlett Packard Enterprise

Posted: 10/15/2026
AssemblyLinux
Hewlett Packard Enterprise

Electrical Hardware Integration – Test Engineer

Hewlett Packard Enterprise

Posted: 10/15/2026
AssemblyLinux
BlackSky

Senior Software Engineer, Design in Test (SDET)

BlackSky
Posted 10/19/2026full-timeTukwila • Washington • United StatesSenior💰 $145,000 - $165,000 per yearWebsite
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Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong expertise in designing and developing automated test frameworks using Python, with a focus on API and UI testing. Proficient in troubleshooting and validating software across distributed systems while ensuring compliance with ITAR requirements.

Highest-signal resume keywords
Python ProficiencyAutomated API TestingAutomated UI TestingCI/CD IntegrationTroubleshooting Skills

Tech Stack

Tools & technologies
Distributed SystemsPythonRayC++Go

About the role

Key responsibilities & impact
  • Design, develop, and maintain automated test frameworks and tools using Python across services, APIs, and UI workflows
  • Build Python or Go-based simulators, mocks, and emulators for third-party environments, network behavior, and integration scenarios
  • Develop, maintain, and execute automated API test suites using Python Requests, custom harnesses, and Postman/Newman when appropriate
  • Build and maintain automated UI test suites using Python Playwright with reusable components, selectors, and page-object patterns
  • Monitor nightly automated test runs and analyze failures using Jira/X-Ray, Slack, and CI/CD integrations
  • Troubleshoot APIs, backend services, and UI workflows; isolate root causes and verify fixes with developers
  • Perform targeted manual testing for new features, complex regression scenarios, and defect reproduction
  • Validate functional behavior, edge cases, and workflows across distributed application components
  • Document test frameworks, automation patterns, test cases, expected outcomes, and defect reproduction steps
  • Support internal Python-based test applications, tools, and services
  • Ensure adequate coverage for new features, releases, and high-risk areas
  • Improve automation tooling, coding standards, and test strategy
  • Assist with build readiness for deployment and release
  • Perform other job-related duties as assigned

Requirements

What you’ll need
  • Minimum of six (6) years of experience as a Software Test Engineer, Automation Engineer, or SDET, with significant hands-on software development responsibilities
  • Bachelor's degree in relevant field of study or equivalent additional experience of four years
  • Strong proficiency in Python, including writing reusable modules, building automation frameworks, and creating test harnesses or tools
  • Experience developing automated API tests using Python Requests or equivalent frameworks
  • Experience designing and maintaining automated UI tests; Python Playwright preferred
  • Experience building Python-based utilities, simulators, mocks, or environment emulators
  • Familiarity with reporting test results and integrating automation with Jira/XRay, Slack, or similar tools
  • Ability to analyze automated test results, identify root causes across services and layers, and validate fixes in collaboration with developers
  • Working knowledge of CI-based automated test pipelines, nightly execution workflows, and test orchestration
  • Understanding of distributed systems, API-driven architectures, and service interactions
  • Strong troubleshooting and debugging skills across API, backend services, and UI application layers
  • Ability to document test plans, automation approaches, and defect reports with clarity and precision
  • US citizenship required due to program requirements
  • For ITAR compliance, must be a U.S. citizen, lawful permanent resident of the U.S., protected individual, or eligible to obtain required U.S. Department of State authorizations
  • Preferred: experience testing and verifying embedded software; hardware maintenance for embedded software testing; C/C++; debugging C/C++ and fault analysis; CI/CD systems; infrastructure as code; QEMU; device emulation; Buildroot; Yocto

Benefits

Comp & perks
  • Medical, dental, vision, disability, group term life and AD&D, voluntary life and AD&D insurance
  • BlackSky pays 100% of employee-only premiums for medical, dental and vision and contributes $100/month for out-of-pocket expenses
  • 15 days of PTO
  • 11 Company holidays
  • Four Floating Holidays
  • One day of paid volunteerism leave per year
  • Parental leave
  • 401(k) pre-tax and Roth deferral options with employer match
  • Flexible Spending Accounts
  • Employee Stock Purchase Program
  • Employee Assistance and Travel Assistance Programs
  • Employer matching donations
  • Professional development
  • Choice of Mac or PC
  • Awesome swag

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Automated Test FrameworksPython RequestsPython PlaywrightTest Harness DevelopmentSimulators and MocksDebugging SkillsTest DocumentationAutomation PatternsDefect ReproductionDistributed Systems Understanding
Soft Skills
Analytical SkillsCollaborationAttention to DetailClear Communication
Tools & Technologies
JiraX-RaySlackPostmanNewmanCI/CD SystemsQEMUBuildrootYocto
Industry Keywords
ITAR ComplianceSoftware Development Engineer in Test (SDET)Embedded Software TestingFault Analysis