68 software test engineer jobs at 27 companies in Ballwin, MO

2w
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Entry-Level Software Test Engineer
Maryland Heights or Hazelwood
$59k-$67k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
Bachelor's degree, foundational testing and basic programming knowledge, analytical problem-solving, ability to obtain U.S. Secret security clearance, familiarity with test procedures and defect management.
Team Foundation Server, Azure DevOps, OFP (Operational Flight Program), SIL (System Integration Lab)
1mo
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Associate Software Engineer – Test & Verification
Hazelwood, Missouri, United States
$70k-$86k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
1+ YOEBachelor's degree, active U.S. Secret clearance, ability to obtain TS/SCI, DoD 8140 foundational qualifications, 1+ years QA experience, proficiency with Python/JavaScript/PowerShell/.NET, Agile experience, test automation and Azure DevOps preferred.
.NET Framework, .NET 8, .NET 10, Python, JavaScript, PowerShell, Azure DevOps
4w
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Lead Test Engineer
Scott Air Force Base or O'Fallon or United States
$105k-$231k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
8+ YOE3+ MgmtUS citizen with Secret clearance (or ability to obtain), Bachelor's in CS/IT, 8+ years software testing (≥3 years leadership), SAP (preferably TM) experience, SAFE Agile experience, and test automation experience.
SAP Transportation Management (TM), SAP, SAFE Agile
4w
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Lead Test Engineer
Scott Air Force Base or O'Fallon or United States
$105k-$231k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
8+ YOE3+ MgmtUS citizen with Secret clearance (or ability to obtain); Bachelor's in CS/IT; 8+ years software testing with 3+ years leadership; experience with SAP (TM), SAFe Agile, test automation; strong analytical and communication skills.
SAP Transportation Management (TM), SAFe Agile
3mo
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Test Engineer (Entry-Level)
Scott AFB or United States
OnsiteFull Time
DecisionPoint
DecisionPoint: Provides IT and cybersecurity services for federal government agencies.
2+ YOEEntry-level Test Engineer; 0–2+ years experience; active Secret clearance; IAT Level II (Security+ CE); basic SDLC; strong communication.
Jira, Java, Angular, APIs, SQL
2mo
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Lead Software Development Engineer in Test (Lead SDET)
O’Fallon, Missouri, United States
$140k-$231k/yr HybridFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Extensive SDET/QA experience in large-scale, high-availability systems; strong C/C++ and test automation skills; Linux; CI/CD; leadership and mentoring required.
C, C++, Google Test, Linux, Shell Scripting, Git, CI/CD
1mo
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Software Engineer Co-Op
St. Louis, Missouri, United States
OnsitePart Time, Internship
Nidec
NidecTokyo Stock Exchange: 6594: Manufactures electric motors and electronic components for industrial applications.
Currently enrolled in a bachelor's program in software engineering, computer science, or similar; available 25–29 hours/week while attending school; support testing, development, assembly, and lab activities for software controls.
1mo
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C++ Software Engineer
St. Louis, Missouri, United States
OnsiteFull Time
London Stock Exchange Group
London Stock Exchange GroupLondon Stock Exchange: LSEG: Provides financial market infrastructure and global data analytics services.
2+ YOE2+ years C++ experience; OO design; full software life cycle; team collaboration; test-driven development.
C++, Linux, Python, Unix shell, JavaScript, Node.js
3mo
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Software Engineer III
St. Louis, Missouri, United States
OnsiteFull Time
Agile Defense
Agile Defense: Provides IT modernization and cybersecurity for federal government agencies.
5+ YOEActive U.S. Top Secret/SCI clearance; 5+ years software development in VB.NET/C#.NET; SQL experience; unit testing; CompTIA Security+ or Computer Science degree.
VB.NET, C#.NET, SQL, xUnit, nUnit, MSTest, Windows, Azure DevOps, Jira, CI/CD, RESTful APIs, C++
3d
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Lead Software Developer
Seattle or St. Louis or Arlington or Ridley Park or Charleston or Mesa
$183k-$265k/yr HybridFull Time
Boeing
BoeingNYSE: BA: Manufactures commercial and military aircraft, satellites, and defense systems.
10+ YOEBachelor's degree in a technical field and 10+ years developing software, data pipelines, and cloud-based data services; U.S. Person required for export control; drug testing and COI assessment apply.
Microsoft Teams, Mattermost, GitHub
2w
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Sr. Software Engineer
O'Fallon, Missouri, United States
$100k-$110k/yr OnsiteFull Time
Tech Mahindra
Tech MahindraNational Stock Exchange of India: TECHM: Global provider of information technology and business process services.
5+ YOE5+ years experience with Java 8, Spring Boot, Microservices, Angular JS, testing frameworks (JUnit, Mockito), cloud (PCF/Azure); Bachelor's degree required; strong communication and problem-solving skills.
Java 8, Spring Boot, Microservices, Angular JS, JUnit, Mockito, Pivotal Cloud Foundry (PCF), Azure, Docker, Kubernetes, SQL, NoSQL
1mo
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Software Developer II - Customer Care & Billing Utility Software (Front End)
Cedar Rapids or Lake Saint Louis or Mandan
HybridFull Time
NISC
NISC: Provides enterprise software solutions for utility and broadband cooperatives.
5+ YOE5+ years software development experience; Angular/TypeScript; Java; Spring Boot; cloud tech; automated testing; RESTful services; SQL; Kubernetes; AWS; SDLC; cross-functional work.
Angular, TypeScript, Java, Spring Boot, SQL, PostgreSQL, Kafka, Kubernetes, AWS, Jira, Confluence, Bitbucket, Bamboo, Git, SDLC, Agentic AI
1mo
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Software Developer II - Provisioning (Full Stack, Front End)
Cedar Rapids or Lake Saint Louis or Mandan
HybridFull Time
NISC
NISC: Develops enterprise software for energy and telecommunications cooperatives.
5+ YOE5+ years software development experience; proficiency with Angular/TypeScript or GWT, Java, RDBMS/NoSQL, cloud stack (AWS, Kubernetes, Spring Boot, Kafka), Git and automated testing; bachelor’s degree preferred.
Angular, TypeScript, GWT, Java, Postgres, Oracle, MongoDB, AWS, Kubernetes, Spring Boot, Kafka, SSO, Cassandra, Git, JIRA, Confluence, Bitbucket, Bamboo, Claude Code, Augment, Jetbrains Junie, GitHub Copilot, Cursor, OpenAI Codex, Spark, Databricks, .NET, SQL
2d
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Mid Software Engineer (SFA)
Saint Louis, Missouri, United States
OnsiteFull Time
Kentro
Kentro: Provider of digital and IT services for federal agencies.
5+ YOE5-7 years software development experience; proficiency in Python/Java/C#/Javascript; experience translating requirements, design, testing, deployment, database design, code reviews, and system integration. Active TS/SCI clearance and US citizenship required.
Python, Java, C#, Javascript
3d
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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
2w
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Software II Developer
Saint Louis or Alabama or Kentucky or Oklahoma or Arkansas or Louisiana or South Carolina or Florida or Mississippi or Tennessee or Georgia or Texas or Indiana or North Carolina or Wisconsin or Iowa or Ohio
$76k-$124k/yr RemoteFull Time
BJC Health System
BJC Health System: Non-profit health system providing comprehensive hospital and clinical care.
3+ YOEDesign, develop, test and support integrations and applications using Cloverleaf, Tcl and healthcare messaging standards (HL7, X12, XML); 3+ years healthcare IT integration experience preferred; Bachelor's degree or equivalent.
Cloverleaf, Tcl, HL7, X12, XML, MQS, Epic, Bridges, Cogito, Onbase, SQL, Perl, Python, SFTP, VPN
3w
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SDC Java Software Developer---Staff/Analyst---St. Louis (St. Louis, MO, US, 63105)
St. Louis, Missouri, United States
$55k-$113k/yr HybridFull Time
EY
EY: Global firm providing audit, tax, and professional consulting services.
1+ YOEBachelor's in CS or related, 1+ year software development experience, backend (Java/Python/Node.js), REST/APIs, cloud (AWS/Azure), microservices, frontend (React/Angular), CI/CD, Git, testing/TDD/BDD; willing to travel up to 50%.
Java, Python, Node.js, REST, NoSQL, Microservices, Serverless, AWS, Azure, React, Angular, Akka, Scala, Kafka, RabbitMQ, ElasticSearch, Hadoop, Spark, Flume, Mongo, Cassandra, Git, CI/CD, TDD, BDD, IaaS, PaaS
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
2w
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Systems/Controls Engineer II
Kirkwood, Missouri, United States
OnsiteFull Time
Bausch + Lomb
Bausch + LombNYSE: BLCO: Manufacturing and selling contact lenses and eye health products.
3+ YOEBachelor's degree in engineering or computer science (or equivalent experience), 3+ years engineering experience with software emphasis, software V&V and regression testing experience, ability to author and review SRS/SDS/SAD/test protocols, strong communication and organizational skills.
Microsoft Office, Aras PLM, D2, C/C++, C#, Python
3d
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Software Engineering Advisor- Hybrid
St. Louis, Missouri, United States
HybridFull Time
The Cigna Group
The Cigna GroupNYSE: CI: Provides health insurance and pharmacy benefit management services.
3+ YOEMaster’s degree in CS/CE (or Bachelor’s plus more experience),3+ years software engineering in PBM domain, expertise in Java/Spring Boot, ReactJS, Kafka, MongoDB, AWS/OpenShift, Boomi, Saviynt, GitHub, Node.js, testing and observability tools.
Java, Spring Boot, MongoDB, ReactJS, HTML5, XHTML, CSS3, JavaScript, jQuery, AJAX, JSON, Bootstrap, Apache Kafka, Boomi, Saviynt, GitHub, Node.js, NPM, Spring IoC, JUnit, Dynatrace, New Relic, SonarQube, AWS, OpenShift