East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
124 junior software engineer jobs at 53 companies in East Saint Louis, IL
1w
Save
Mark Applied
Hide
Junior Software Developer
St. Louis or Illinois or United States or Europe or South America or Asia
$60k-$65k/yr OnsiteFull Time
Bachelor's degree in computer science, software engineering, or related field; JavaScript, React.js, HTML, CSS, RESTful APIs, PostgreSQL, Git, and Figma experience required.
JavaScript, React.js, HTML, CSS, RESTful APIs, PostgreSQL, CI/CD, FastAPI, Git, Figma, Angular, Vue.js, HTML5, CSS3
1mo
Save
Mark Applied
Hide
Junior Software Engineer
Denver or St. Louis or Sterling or Springfield
$69k-$142k/yr OnsiteFull Time
0+ YOEBachelor's in CS/Software/IS required; 0–3 years software development experience; experience with Java and/or Python; familiarity with web development, relational databases, SDLC/Agile; TS/SCI clearance with polygraph; up to 10% travel.
Java, Python, ArcGIS, GeoServer, OpenLayers, Cesium
1mo
Save
Mark Applied
Hide
Junior Software Engineer
Denver or Springfield or Sterling or St. Louis
$69k-$142k/yr OnsiteFull Time
0+ YOEBachelor's in CS or related, 0–3 years software development experience, Java and/or Python, web app and relational DB familiarity, Agile/SDLC knowledge, strong problem solving, TS/SCI clearance with polygraph.
Java, Python, GIS, ArcGIS, GeoServer, OpenLayers, Cesium
2w
Save
Mark Applied
Hide
Software Engineer
Hazelwood, Missouri, United States
OnsiteFull Time
2+ YOEBachelor's in CS/CE/Applied Math,2+ years software engineering experience,proficiency in C#,system-level debugging,strong math/geometry skills,ability to obtain U.S. person/export eligibility and possibly security clearance.
C#, Microsoft Visual Studio, MATLAB, PowerShell
2mo
Save
Mark Applied
Hide
Software Engineer Co-Op
St. Louis, Missouri, United States
OnsitePart Time, Internship
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.
3mo
Save
Mark Applied
Hide
Software Engineer II
O'Fallon, Missouri, United States
OnsiteFull Time
0+ YOEBachelor's degree in computing or related field; foundational software engineering knowledge; Java proficiency; Agile practices; strong problem solving and communication.
Java, Git, Agile, Testing
2mo
Save
Mark Applied
Hide
Software Engineer - Intermediate
St. Louis, Missouri, United States
HybridFull Time
2+ YOEBachelor's degree or equivalent, 2+ years software development experience with Java, Python, and JavaScript; experience with cloud (GCP/AWS/Azure), build tools (Maven/Gradle), frontend (HTML/CSS), CI/CD, and AI-assisted coding tools (e.g., GitHub Copilot).
GitHub Copilot, Java, Python, JavaScript, Maven, Gradle, HTML, CSS, JUnit, Git, GitHub, Jenkins, Atlassian, Java 17, Spring Boot, GCP, AWS, Azure, CI/CD, Microservices, Data Fabric, CSA Toolset
1w
Save
Mark Applied
Hide
Embedded Software Engineer Intern
Bridgeton, Missouri, United States
$41k-$53k/yr OnsiteInternship
High school diploma or GED and current junior-level or above enrollment in a bachelor's program in computer science, computer engineering, mathematics, physics, or equivalent; strong analytical, communication, and interpersonal skills.
C, C++, C#, Java, Python, git, MATLAB, Simulink, Windows, Linux, Microsoft Office
1w
Save
Mark Applied
Hide
Embedded Software Engineer Intern
Bridgeton or St. Louis
$41k-$53k/yr OnsiteInternship
High school diploma or GED and current junior-level or above enrollment in a bachelor's program; basic knowledge of C, C++, C#, Java, Python, git, operating systems, and Microsoft Office.
C, C++, C#, Java, Python, git, MATLAB, Simulink, Windows, Linux, Microsoft Office
2mo
Save
Mark Applied
Hide
Embedded Software Engineer 2 - Avionics
Olathe or Chandler or St. Louis
OnsiteFull Time
1+ YOEBachelor's in a related field plus 1+ year relevant experience (or equivalent). Proficiency in C/C++ and other languages, familiarity with software engineering tools (configuration management, build, debuggers, emulators, simulators, logic analyzers), and customer-facing OEM experience; aviation background preferred.
C, C++, C#, Java, Python, assembly language, configuration management systems, build processes, debuggers, emulators, simulators, logic analyzers
2mo
Save
Mark Applied
Hide
Software Engineer - Intermediate
St. Louis, Missouri, United States
HybridFull Time
2+ YOEBachelor's degree or equivalent experience; 2+ years with Java, Python, JavaScript, build tools, web development, testing, and cloud technology. AI-assisted development experience required.
Java, Python, JavaScript, Maven, Gradle, HTML, CSS, GCP, AWS, Azure, Git, GitHub, JUnit, Jenkins, Spring Boot, GitHub Copilot, Data Fabric, CSA Toolset, Atlassian
1mo
Save
Mark Applied
Hide
Software Engineer I
Fenton, Missouri, United States
HybridFull Time
1+ YOE1-2 years relevant experience or equivalent practical experience; knowledge of web frameworks, OOP, REST services, databases, basic cloud (AWS/GCP/OCI), secure coding, and AI-assisted development tools.
GitHub Copilot, Claude, AWS, GCP, OCI, REST
1w
Save
Mark Applied
Hide
Associate Embedded Software Engineer
Hazelwood or Berkeley or Saint Louis
$99k-$135k/yr OnsiteFull Time
2+ YOEBachelor's degree and 2+ years developing software or embedded systems. Experience with C/C++, Agile development, and ability to obtain U.S. Secret clearance and meet U.S. Person export requirements.
C, C++, Linux, Docker, Kubernetes, JIRA, Git, MSOSA, Cameo, GitLab, Ansible, Artifactory, UML, SysML, CI/CD, AI
1mo
Save
Mark Applied
Hide
Software Development Engineer I
St. Louis, Missouri, United States
$76k-$129k/yr OnsiteFull Time
1+ YOE1+ years JavaScript/TypeScript experience, bachelor's in CS/Math/GIS/STEM, strong OOP and software methodology knowledge, ability to maintain US security clearance, Python experience for geoprocessing preferred.
JavaScript, TypeScript, Python, HTML, CSS, Swift, Kotlin, ReactJS, Vue, Svelte, GIS, REST Web services, SQL, SQL Server, PostgreSQL, Oracle
20h
Save
Mark Applied
Hide
Software Developer - Telecom Bill Calculations Software (Back End, Python)
Atlanta or Cedar Rapids or Lake Saint Louis or Mandan
HybridFull Time
1+ YOERequires 1+ year software development experience, Python or scripting, SQL, Progress, Linux, Git, and related development tools. Bachelor's degree in computer science or equivalent experience preferred.
Python, Progress, Linux, Shell Scripting, C, SQL, Progress OE12, AWS, Amazon S3, AWS Lambda, Amazon EC2, Amazon EMR, Amazon SQS, Amazon SNS, Amazon CloudWatch, Git, JIRA, Confluence, Bitbucket, Bamboo, Docker, Kubernetes, CI/CD, Agile
1mo
Save
Mark Applied
Hide
Software Engineer–Developer, Phantom Works Weapons (Associate or Experienced)
Saint Charles or Saint Louis
$99k-$171k/yr OnsiteFull Time
1+ YOEAbility to obtain U.S. Secret Clearance; experience with C++, Python, C#, Linux, git, software architecture, and TCP/UDP networking; Bachelor\u0002s degree in a technical field.
C++, Python, C#, Linux, git, TCP, UDP, CodeVue
20h
Save
Mark Applied
Hide
Software Developer - Telecom Bill Calculations Software (Back End, Python)
Atlanta or Cedar Rapids or Lake Saint Louis or Mandan
HybridFull Time
1+ YOE1+ years in software development; proficiency with SQL, Progress, C or object-oriented languages; Python, Linux, Git, and web deployment experience. AWS, Progress OE12+, and a computer science bachelor's degree preferred.
Python, Progress, Linux, Shell Scripting, C, SQL, Progress OE12, AWS, S3, Lambda, EC2, EMR, SQS, SNS, CloudWatch, Git, JIRA, Confluence, Bitbucket, Bamboo, Docker, Kubernetes, CI/CD, Agile
1mo
Save
Mark Applied
Hide
Software Engineer–Developer, Phantom Works Weapons (Associate or Experienced)
Saint Charles or Saint Louis
$99k-$171k/yr OnsiteFull Time
1+ YOEAbility to obtain U.S. Secret clearance and U.S. Person status; Bachelor's degree or equivalent; 1+ years experience with C++, Python, C#, Linux, git; experience with software architecture and networked TCP/UDP applications.
C++, Python, C#, Linux, git
1mo
Save
Mark Applied
Hide
Software Engineer 1 (Backend UI and AI)
Earth City, Missouri, United States
$86k-$102k/yr HybridFull Time
2+ YOE2–3 years experience, bachelor’s degree or equivalent, proficiency with ReactJS/Next.js/JavaScript/Node.js, frontend state management, CI/CD and DevOps practices, strong communication and problem-solving skills.
ReactJS, Next.js, JavaScript, Node.js, GraphQL, Apollo Client, Axios, Redux, Context API, HTML5, CSS3, SCSS, Styled Components, Webpack, Babel, NPM, JWT, Jenkins, CloudBees, Git, Azure DevOps/TFS, WCAG/ADA Compliance Tools
2d
Save
Mark Applied
Hide
Junior SQL Developer
O'Fallon, Missouri, United States
OnsiteFull Time
1+ YOEBachelor's degree in computer science, information technology, or related field, or 1–2 years of industry experience; proficiency in SQL Server, T-SQL, stored procedures, and functions.
SQL Server, T-SQL, Power BI
Explore Jobs