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Java Software Development Engineer In Test Jobs in Saint Louis, MO

Artius Solutions

Lead Java Engineer

Saint Louis, MO · On-site

$140K - $150K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Lead the architecture, design, development, and testing of web and cloud-native applications in a ... Advocate for and practice Test-Driven Development (TDD) and automated test coverage (unit ...

Mastercard, Inc.

$114K - $151K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... in test automation, code coverage, and system reliability • Analyze and optimize system ... Java and Spring Boot • Strong experience designing scalable systems using modern software design ...

MasterCard

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... in test automation, code coverage, and system reliability Analyze and optimize system performance ... using Java and Spring Boot Strong experience designing scalable systems using modern software ...

MasterCard

Software Engineer II

O Fallon, MO · On-site

$91K - $124K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... development? Do you thrive in an environment where you are continuously learning and growing your ... Develop and maintain unit, functional, and integration tests to validate software components and ...

MasterCard

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The position requires strong expertise in Java-based application development, Spring Boot, Kafka ... Design, develop, test, deploy, and support scalable software solutions that power Mastercard ...

Mastercard, Inc.

$114K - $151K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The position requires strong expertise in Java-based application development, Spring Boot, Kafka ... Role As a Senior Software Engineer, you will: • Design, develop, test, deploy, and support ...

Mastercard, Inc.

$91K - $124K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... and development? • Do you thrive in an environment where you are continuously learning and ... tests to validate software components and improve overall quality. • Support performance ...

Boeing

Software Engineer

Maryland Heights, MO · On-site

  • Medical

  • Life

  • Retirement

Supports the design, development, test, and maintenance of weapon planning software throughout the ... Bachelor of Science degree from an accredited course of study in engineering, engineering ...

Boeing

Software Engineer

Maryland Heights, MO

  • Medical

  • Life

  • Retirement

Supports the design, development, test, and maintenance of weapon planning software throughout the ... Bachelor of Science degree from an accredited course of study in engineering, engineering ...

Boeing

Software Engineer

Maryland Heights, MO · On-site

  • Medical

  • Life

  • Retirement

Supports the design, development, test, and maintenance of weapon planning software throughout the ... Bachelor of Science degree from an accredited course of study in engineering, engineering ...

Staffingine LLC

Automation Engineer

Saint Louis, MO · On-site

... software applications Design and implement automated test frameworks using Selenium with Java for U ... development teams to identify and resolve defects Participate in continuous integration and ...

MasterCard

Senior Software Engineer- RPPS Platform

O Fallon, MO · Remote

$114K - $151K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The position requires strong expertise in Java, Spring Boot, API development, and modern front-end ... Design, develop, test, deploy, and maintain scalable software applications that support Mastercard ...

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All JobsJava Software Development Engineer In Test JobsJava Software Development Engineer In Test Jobs in Saint Louis, MO

Java Software Development Engineer In Test information

See Saint Louis, MO salary details

$25

$58

$82

How much do java software development engineer in test jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for java software development engineer in test in Saint Louis, MO is $58.75, according to ZipRecruiter salary data. Most workers in this role earn between $48.37 and $66.39 per hour, depending on experience, location, and employer.

What is the difference between Java Software Development Engineer In Test vs Java QA Engineer?

AspectJava Software Development Engineer In TestJava QA Engineer
Primary FocusDevelops automated tests, writes test frameworks, and ensures software quality through codingPerforms manual and automated testing, focuses on test execution and defect reporting
Skills & CertificationsJava programming, automation tools (Selenium, JUnit), scripting, CI/CD knowledgeTesting methodologies, Java basics, automation tools, bug tracking
Work EnvironmentSoftware development teams, Agile/Scrum environments, coding-intensiveTesting teams, collaboration with developers, sometimes manual testing

In summary, Java Software Development Engineer In Test roles focus on creating automated testing solutions and integrating testing into the development process, requiring strong coding skills. Java QA Engineers primarily perform testing activities, including manual and automated tests, often with less emphasis on developing testing frameworks.

What are the key skills and qualifications needed to thrive as a Java Software Development Engineer in Test?

To thrive as a Java Software Development Engineer In Test, you need strong programming skills in Java, a solid understanding of software testing principles, and experience with automated testing frameworks, often backed by a degree in computer science or related field. Familiarity with tools like Selenium, TestNG, JUnit, CI/CD systems, and source control platforms such as Git is typically required, along with knowledge of API testing and scripting. Excellent problem-solving abilities, attention to detail, and clear communication skills help you identify issues and collaborate effectively with development teams. These skills ensure the delivery of high-quality, reliable software by enabling thorough, efficient, and automated testing processes.

What does a Java Software Development Engineer in Test do?

A Java Software Development Engineer In Test (SDET) is responsible for designing, developing, and maintaining automated test frameworks and scripts using Java. SDETs work closely with developers and QA teams to ensure the quality and reliability of software applications by writing code that tests other code. They also help identify bugs, create test plans, and contribute to continuous integration and deployment processes. SDETs play a key role in improving software quality and speeding up release cycles through automation.

How does a Java Software Development Engineer in Test typically collaborate with developers and QA teams during the software development lifecycle?

A Java SDET works closely with both developers and QA teams to ensure software quality from the earliest stages of development. They participate in sprint planning, help define acceptance criteria, and design automated test frameworks that integrate smoothly with the development pipeline. Collaboration often involves reviewing code, sharing test results in real time, and troubleshooting issues together to accelerate the feedback loop. This hands-on involvement helps catch defects early and supports a culture of continuous integration and delivery.
What are popular job titles related to Java Software Development Engineer In Test jobs in Saint Louis, MO? For Java Software Development Engineer In Test jobs in Saint Louis, MO, the most frequently searched job titles are:
What job categories do people searching Java Software Development Engineer In Test jobs in Saint Louis, MO look for? The top searched job categories for Java Software Development Engineer In Test jobs in Saint Louis, MO are:
What cities near Saint Louis, MO are hiring for Java Software Development Engineer In Test jobs? Cities near Saint Louis, MO with the most Java Software Development Engineer In Test job openings:
Java Software Development Engineer In Test jobs near you
Infographic showing various Java Software Development Engineer In Test job openings in Saint Louis, MO as of August 2026, with employment types broken down into 67% Full Time, and 33% Contract. Highlights an 33% In-person, and 67% Remote job distribution, with an average salary of $122,191 per year, or $58.7 per hour.

Lead Java Engineer

Artius Solutions

Saint Louis, MO • On-site

$140K - $150K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 26 days ago

Job description

Lead Java Engineer

Location: Saint Louis, Missouri (On-Site/Hybrid/Remote – specify as needed)
Employment Type: Full-Time, Direct Hire

About the Role

We are seeking an accomplished Lead Java Engineer who will drive the end-to-end design, development, and delivery of modern, scalable web and cloud-native applications. This role calls for a hands-on leader who combines strong architectural vision, technical excellence, and a collaborative spirit to build robust enterprise platforms.

You will take ownership of platform architecture, drive technology best practices, and mentor engineering teams. Your work will directly influence project direction, enable delivery of high-quality code, and build a culture of technical excellence.

Responsibilities

  • Lead the architecture, design, development, and testing of web and cloud-native applications in a cross-functional Agile team.

  • Guide end-to-end technical delivery, including architectural assessments and solution design for enterprise platforms.

  • Break down epics/features, define technical strategies, and maintain architectural integrity across the product.

  • Mentor and support junior engineers; take part in hiring, onboarding, and technical knowledge sharing.

  • Champion best development practices: branching strategies, code reviews, library management, robust logging, and error handling.

  • Enforce and document coding guidelines, code scanning profiles, and technical standards to ensure maintainability and reduce technical debt.

  • Advocate for and practice Test-Driven Development (TDD) and automated test coverage (unit, integration, functional, contract).

  • Design and implement microservices using Spring Boot, Spring WebFlux, and modern design patterns (hexagonal architecture, DDD).

  • Build, optimize, and maintain RESTful APIs and implement asynchronous inter-service communication using Kafka.

  • Oversee database schema design, data migration, query optimization, and secure, reliable interactions with relational and NoSQL databases (Oracle, AWS RDS, DynamoDB).

  • Implement and support cloud infrastructure (AWS) using services like EKS, EC2, S3, RDS, SQS, SNS, Lambda, ECS, and Docker/Kubernetes containers.

  • Stay current with industry trends, new technologies, and best practices; contribute to internal tech talks and workshops.

Requirements

  • 7+ years hands-on experience in microservices-based, cloud-native Java application development within enterprise environments.

  • 3+ years of technical leadership/lead engineer experience in agile teams.

  • Expertise in Java (JDK 8 or higher; Java 21 preferred): including lambda expressions, Stream API, CompletableFuture, Virtual Threads, and concurrency APIs.

  • Proven ability with Spring Boot, Spring WebFlux, JPA, Spring Security, Actuator, Kafka, Redis.

  • AWS Cloud: 2+ years hands-on using EKS, EC2, S3, RDS, SQS, SNS, DynamoDB, Lambda.

  • Practical, hands-on experience with RESTful API design and hexagonal architecture.

  • Advanced skills in relational databases (Oracle or AWS RDS), schema design, and data migrations.

  • Proficiency with container and serverless architectures (Docker, Kubernetes, AWS Lambda/ECS).

  • Strong in TDD/DDD, using frameworks such as JUnit, Cypress, WireMock, PowerMock, ArchUnit.

  • Familiar with CI/CD tools and pipelines (DevOps mindset), application lifecycle management tools (e.g., Jira).

  • Strong verbal and written communication, consultant-level client-facing skills, and self-starter mindset.

Preferred Qualifications

  • Prior experience in end-to-end architectural ownership of cloud or enterprise web platforms.

  • Experience delivering high-quality software in regulated or large-scale enterprise domains.

  • Active involvement in tech communities, workshops, or mentoring engineers.

Must-Have Technologies

  • Java (JDK 8+)

  • Spring Boot

  • Microservices

  • Kafka

  • AWS

  • Relational databases

  • Experience with multiple testing strategies (unit, integration, functional, contract tests)

Benefits

  • Competitive salary and performance-based bonus

  • Comprehensive health, dental, and vision coverage

  • 401(k) with match

  • Flexible PTO policy

  • Opportunities for technical and career growth

  • Engaging, collaborative, and innovative team culture

To apply:
Submit your updated resume detailing relevant experience in Java, cloud platforms, AWS, microservices, and leadership. Only candidates with strong hands-on and leadership experience in modern Java stacks will be considered.

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