310 software developer jobs at 157 companies in Mount Joy, PA
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Software Developer
Exton or Philadelphia
RemoteFull Time
5+ YOE5+ years professional software development experience with C# and .NET; experience with React, TypeScript, SQL Server, PostgreSQL, Docker, testing tools, and CI/CD; bachelor's degree or equivalent experience preferred.
C#, .NET, React, SQL Server, PostgreSQL, ASP.NET Core, Entity Framework Core, TypeScript, Testcontainers, Playwright, Docker, Docker Compose, GitHub Actions, xUnit, Bicep, Azure Container Apps, Kubernetes
1w
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Software Engineer
Hunt Valley, Maryland, United States
$86k-$115k/yr HybridFull Time
5+ YOEBachelor's degree in computer science or related field, 5+ years software engineering experience, API and full-stack development experience, familiarity with Agile, testing, and cloud paradigms.
.NET (C#), SQL, HTML, CSS, JavaScript, NodeJS, Angular, React, Vue, Azure DevOps, Git, MS SQL Server, Typescript, REST API, HTTP, Java
1w
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Software Engineer (Engineer Software 3) - 29586
Aberdeen Proving Ground or United States
$97k-$104k/yr HybridFull Time
5+ YOE5+ years experience (Bachelors) developing C++ simulation software; ability to obtain TS/SCI clearance; experience with agent-based modeling, space domain concepts, and code review practices.
Confluence, Discourse, GitLab, Jira, C++, Python
1mo
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Software Engineer
Aberdeen Proving Ground, Maryland, United States
$76k-$156k/yr HybridFull Time
3+ YOEU.S. citizen with TS/SCI clearance (CI Poly preferred), Bachelor’s in CS/SE/EE, 3+ years software development, strong C++ and Python experience, Linux and UI framework experience, API/CI-CD knowledge, and ability to work with RF/SIGINT data.
C++, Python, Linux, React, Angular, Vue, Git, CI/CD pipelines, Docker, Ansible, Cobbler, HTML, CSS, TypeScript, REST APIs, PostgreSQL, PostGIS, SQLite
2d
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Software Engineer II
Newark, Delaware, United States
OnsiteFull Time
5+ YOEBachelor's degree or equivalent experience and 5+ years of software development experience, with Java, Spring, REST, testing, DevOps, distributed systems, and application monitoring expertise.
Java, J2EE, Spring MVC, Spring Framework, Spring Boot, Spring Security, Spring Integration, Spring Data JPA, SOAP, REST, JSON, Handlebars, Foundation, ReactJS, XML, JAXB, Jackson, Gson, JUnit, Git, Maven, Nexus, Eclipse, Bitbucket, Splunk, Dynatrace, WebSphere MQ, ActiveMQ, JVM, Groovy
1w
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Principal Software Engineer
Lititz or United States
OnsiteFull Time
12+ YOE12+ years software engineering experience; expert in scalable distributed systems, full-stack development, front-end frameworks, cloud-native apps, and technical leadership.
Vue.js, TypeScript, JavaScript, HTML, CSS, C#, .NET, Java, AWS, Kafka, Spark, Hadoop, Presto, GitHub Copilot, Claude Code, Codex
3w
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Sr. Software Developer
Mechanicsburg, Pennsylvania, United States
$100k-$105k/yr OnsiteContract
10+ YOE10+ years professional software development experience; strong expertise with C#, VB.NET, .NET 8+, ASP.NET Core, JavaScript and modern front-end frameworks, SQL/Entity Framework, microservices, messaging, Git; U.S. citizen with current T3 investigation; onsite work required.
C#, VB.NET, .NET 8+, ASP.NET Core, JavaScript, React, Angular, SQL, Entity Framework, NServiceBus, RabbitMQ, Git
1mo
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SENIOR SOFTWARE DEVELOPER/ENGINEER (CLOUD/CYBER)
Huntsville or Aberdeen or Colorado Springs or Crestview or Tupelo
OnsiteFull Time
7+ YOEBS in CS/Software Eng or equivalent, 7+ years software development experience, DoD Top Secret/SCI eligibility, experience with Python, containers, AI/LLMs, databases, Linux, AWS, and Agile/Scrum.
LLMs, Ollama, LM Studio, Python, C#, Go Lang, React, JavaScript, HTML, CSS, Git, Docker, Bash, TensorFlow, PyTorch, SQL, MongoDB, PostgreSQL, Redis, Linux, AWS, RESTful API, Agile/Scrum
3w
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Associate Software Developer
West Chester, Pennsylvania, United States
HybridFull Time
1+ YOE1+ years professional experience in AI/ML and micro-service systems; proficiency with AWS services, Python, C#, ML libraries, and enterprise software development practices.
SageMaker, Lambda, EC2, S3, EFS, SNS, SQS, EventBridge, Kinesis, Aurora, DynamoDB, RDS Proxy, Glue, Athena, Redshift, AWS Step Functions, AWS CodePipeline, Python, TensorFlow, PyTorch, scikit-learn, C#, PowerShell, SQL, JavaScript, UML, Docker, Git, GitHub, Jenkins, Bamboo, TeamCity, SpecFlow, Cucumber, Protobufs, Thrift, Avro, JSON, ODBC, Kafka, Angular, React
1mo
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Software Engineer II
Hartford or Atlanta or St. Paul or Hunt Valley
$120k-$199k/yr HybridFull Time
4+ YOEBachelor's degree in CS or related STEM and 4+ years software development experience; experience with object-oriented languages, RESTful APIs, Salesforce preferred, Agile/Scrum experience, and ability to learn new technologies.
Salesforce, Apex, Lightning Web Components, Salesforce APIs, Java, C#, Python, JavaScript, RESTful APIs, Agile, Scrum, Version control systems
2d
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Software Engineer II
Newark, Delaware, United States
OnsiteFull Time
5+ YOERequires 5+ years of software development, a bachelor's degree or equivalent experience, Java/J2EE, Spring frameworks, REST/JSON, front-end technologies, testing, version control, monitoring, and distributed systems experience.
Spring MVC, Spring Framework, Spring Boot, Spring Security, Spring Integration, Spring Data JPA, SOAP, REST, JSON, Handlebars, Foundation, ReactJS, XML, JAXB, Jackson, Gson, JUnit, Git, Maven, Nexus, Eclipse, Bitbucket, Splunk, Dynatrace, WebSphere MQ, ActiveMQ, JVM, Groovy, Java, J2EE
1mo
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Lead Software Engineer
Newark, Delaware, United States
$128k-$201k/yr OnsiteFull Time
6+ YOE6+ years software engineering experience building cloud and edge systems; experience in regulated environments, secure development practices, QMS familiarity, AI integration, Agile and version control proficiency; degree in CS/SE/STEM.
Microsoft Azure, Google Cloud Platform (GCP), Agile
1w
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Senior Software Developer (NLP)
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
5+ YOEUS citizen with Secret clearance; bachelor’s degree with 5 years relevant software development experience (or 8 years experience); experience integrating NLP into production, proficiency in modern programming languages and mission-critical systems.
Python, C++, Java, C#, Go, Docker, Kubernetes, transformer-based frameworks, vector databases, LLM APIs
3w
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Software Developer II
New Holland or Pennsylvania or Ohio or South Dakota
OnsiteFull Time
Develop, implement, and maintain insurance systems; integration, web services, data mapping, automated testing; college degree or comparable experience in web or computer technologies required.
1mo
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Software Engineer II
Hartford or Atlanta or Cockeysville or Saint Paul
$120k-$199k/yr HybridFull Time
4+ YOEBachelor's degree or equivalent and 4+ years software engineering experience; Salesforce/Apex experience a plus; proficiency in object-oriented languages, REST integrations, and Agile environments.
Apex, Lightning Web Components, Salesforce APIs, Java, C#, Python, JavaScript
2d
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Java Lead - Senior Software Engineer
Reading or Berwyn
$73k-$174k/yr HybridFull Time
10+ YOERequires 10+ years with Java, RESTful services, Spring MVC, Angular, and software development; experience with databases, Git, Maven, Jenkins, Docker, OpenShift, testing, and Agile projects.
Java, Spring Boot, Angular, TypeScript, Karma, Jasmine, JUnit, Mockito, SQL, Docker, OpenShift, Spring MVC, J2EE, Hibernate, Spring JPA, JavaScript, CSS, HTML, jQuery, Ajax, VueJS, MySQL, PostgreSQL, Oracle, Git, Maven, Jenkins, Spring Cloud, Nginx, NodeJS, Redis
1mo
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Senior Software Engineer
Aberdeen, Maryland, United States
$90k-$198k/yr OnsiteFull Time
10+ YOE10+ years software engineering experience in Defense, BA/BS or equivalent experience, proficiency with C++, Java, Python, C#, secure coding and Defense standards, DoD cybersecurity certification preferred.
C++, Java, Python, C#, Git, SVN, CI/CD, automated testing tools
2mo
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Software Developer
Mount Joy, Pennsylvania, United States
$70k-$90k/yr OnsiteFull Time
3+ YOE3+ years C#/.NET; 2+ years RESTful APIs; strong SQL Server; troubleshooting; performance optimization; ERP/POS familiarity.
C#, .NET, RESTful APIs, SQL Server, Git, Visual Studio, Docker, SSRS, ERP Systems, Microsoft Dynamics Business Central, Counterpoint
3mo
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Software Applications Engineer
Aberdeen Proving Ground, Maryland, United States
$115k-$130k/yr HybridFull Time
5+ YOEDoD Secret clearance; BS in computer science or related field; 5+ years in software applications engineering; strong .NET/C#, MudBlazor, HTML/CSS/JavaScript; API development; Azure/DevOps; security+; hybrid role near Aberdeen Proving Ground, MD.
C#, .NET, MudBlazor, HTML, CSS, JavaScript, OpenXml, ASP.NET Core, Entity Framework Core, SQL, Azure, DevOps, OpenID Connect, OAuth 2.0, Microsoft Entra ID
1mo
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Software Engineer II
Exton or Philadelphia
HybridFull Time
5+ YOE5+ years frontend development with TypeScript and React, experience with 3D/web graphics (Cesium/WebGL/three.js) preferred, testing (Vitest/Jest, Playwright), agile/Scrum, strong communication, graduate degree or equivalent experience.
TypeScript, React, iTwin.js, Cesium, pnpm, Module Federation, Vitest, React Testing Library, Playwright, Jest, Azure DevOps, CI/CD, GitHub, GitHub Copilot, Git, WebGL, three.js
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