759 software developement engineer jobs at 265 companies in Middletown, DE

1mo
Save
Mark Applied
Hide
Software Developer
Philadelphia, Pennsylvania, United States
$92k-$154k/yr HybridFull Time
AVEVA
AVEVA: Industrial software for engineering and operational performance management.
3+ YOE3+ years software/product development; degree in engineering, computer science, math, or physics; experience with C#/.NET, C++, JavaScript; strong debugging, communication, and design skills.
C#/.NET, C++, JavaScript
1mo
Save
Mark Applied
Hide
Ground Software Engineer
King of Prussia or Littleton
$77k-$152k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
1+ YOEActive Top Secret/SCI clearance, BS degree, typically 1+ years professional software experience, ground subsystems and scaled Agile development experience, strong software engineering and communication skills.
Java, Angular, Python, C# .NET, JavaScript, TypeScript, Docker, Kubernetes, Rancher, GitLab, DevSecOps, CI/CD, SAFe
1w
Save
Mark Applied
Hide
Software Engineer III
Mt. Laurel or Bala Cynwyd or Philadelphia or United States
$100k-$115k/yr HybridFull Time
Philadelphia Insurance Companies
Philadelphia Insurance Companies: Specialty commercial property and casualty insurance provider.
Hands-on software engineering across the SDLC including development, testing, deployment, production support, APIs, integrations, databases, CI, and collaboration with architects and stakeholders.
6d
Save
Mark Applied
Hide
Software Engineer III
Mount Laurel or Bala Cynwyd or United States
$100k-$115k/yr HybridFull Time
Philadelphia Insurance Companies
Philadelphia Insurance Companies: Commercial property and casualty insurance underwriting and services provider.
Hands-on software engineering across SDLC; experience with application development, APIs, integrations, databases, CI/CD, troubleshooting, and collaborating with technical and business stakeholders.
1mo
Save
Mark Applied
Hide
Senior Software Engineer
New York City or Asbury Park or Boston or Chicago or Baltimore
$160k-$180k/yr HybridFull Time
Solar Landscape
Solar Landscape: Develops and operates commercial rooftop solar energy projects.
5+ YOE5+ years software engineering experience; lead full-stack development with TypeScript, Node.js, Python, Next.js, Tailwind CSS; experience with Microsoft Azure, Azure DevOps, GitHub, Jira, EMU/AI-enabled features, and leading/mentoring engineers.
TypeScript, Node.js, JavaScript, Next.js, Tailwind CSS, Python, Microsoft Azure, Microsoft Azure DevOps, GitHub, Jira, Figma, Microsoft Dynamics, Microsoft Business Central, Microsoft PowerApps, Microsoft Power BI
1w
Save
Mark Applied
Hide
Software Developer
Exton or Philadelphia
RemoteFull Time
CAP Index
CAP Index: Provides data-driven crime risk forecasting and security management solutions.
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
1mo
Save
Mark Applied
Hide
Software Developer
Belcamp, Maryland, United States
$83k-$140k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
10+ YOEBSc and 10+ years software development experience, U.S. citizenship with active Secret clearance, proficiency with Java/Python/C#/JavaScript, Linux/Windows experience, testing and documentation skills, DoD experience preferred.
Java, Python, C#, JavaScript, Linux, Windows
2d
Save
Mark Applied
Hide
Ground Software Engineer
Fort Worth or King of Prussia or Orlando or Marietta
OnsiteFull Time
Infinity Systems Engineering
Infinity Systems Engineering: Provides specialized systems engineering and mission operations for aerospace programs.
1+ YOEDesign, develop, integrate, and test ground mission software (C++ primary) for DoD programs; U.S. citizenship and Secret clearance required; 1+ years software engineering experience preferred.
C++, C#, Python, GitLab, Git, Jira, Confluence, GitLab CI
1w
Save
Mark Applied
Hide
Software Engineer
Conshohocken, Pennsylvania, United States
$87k-$123k/yr HybridFull Time
Empower
Empower: Provides retirement plan administration and personal wealth management services.
3+ YOEBachelor's degree or equivalent,3+ years software development experience,proficiency in Java, Python, Swift or JavaScript,strong problem-solving and communication skills,US work authorization required.
Java, Python, Swift, JavaScript
1mo
Save
Mark Applied
Hide
Lead Software Engineer
Newark, Delaware, United States
$128k-$201k/yr OnsiteFull Time
Hologic
HologicNASDAQ: HOLX: Develops medical technology for women's healthcare and diagnostics.
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
3d
Save
Mark Applied
Hide
Software Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
Green Expert Technology
Green Expert Technology: Provides engineering and technical services for government defense programs.
3+ YOE3+ years software development experience for control systems, BS in CS/EE/CompE, Secret clearance, proficiency in C/C++/C#/Java, version control, testing, and technical documentation.
Microsoft.NET Framework, Windriver Workbench, Tornado IDE, Linux, C, C++, C#, Java, JIRA, Wiki, Confluence, TCP/IP, UDP, SVN, Git, Matlab, Labview, MS Access, SQL, PROFIBUS, MODBUS, IEC 61131-3, PLC
2mo
Save
Mark Applied
Hide
Software Engineer
Conshohocken, Pennsylvania, United States
HybridFull Time
Novacore
Novacore: Independent specialty insurance provider for niche markets.
2+ YOE2+ years software development experience; C#, Typescript, Python; Azure; CI/CD; GitHub; JIRA; Agile; HTML/CSS; JavaScript; UI/UX; insurance domain experience preferred.
C#, Typescript, Python, HTML, CSS, JavaScript, Azure, GitHub, JIRA, CI/CD, Microsoft stack, UI/UX
2mo
Save
Mark Applied
Hide
Mid Level Software Engineer
Baltimore, Maryland, United States
$125k-$150k/yr HybridFull Time
BlackSea Technologies
BlackSea Technologies: Designs and manufactures autonomous maritime vessels and defense hardware.
3+ YOE3-7 years software engineering, strong C++, distributed systems, robotics/autonomy, AI-assisted development tools; APIs and networking experience.
C++, MAVLink, Protobuf, DDS, CAN, TCP/IP, serial, OpenAI Codex, Claude Code
3mo
Save
Mark Applied
Hide
1650 - Software Developer
Belcamp, Maryland, United States
$83k-$140k/yr OnsiteFull Time
Sigma Defense: Develops tactical communications and intelligence systems for defense.
10+ YOE10+ years in software development; 5+ years DoD software support; strong requirements analysis, architecture, and coding skills; Java, Python, C#, and JavaScript; ability to document software; U.S. citizen; Secret security clearance or higher; Bachelor's Science degree.
Java, Python, C#, JavaScript
2mo
Save
Mark Applied
Hide
Software Engineer
Baltimore or Annapolis
HybridFull Time
ExistX
ExistX: Transitions national security research into operational software and systems.
5+ YOE5+ years enterprise software development; BS in Computer Science or related field; backend languages Java/C/C++/Rust/Python; experience with scalable systems; strong documentation; cryptography or cloud knowledge preferred.
Java, C/C++, Rust, Python, Cryptol, Haskell, Docker, Kubernetes, AWS, Azure
1w
Save
Mark Applied
Hide
Software Engineer 2 (D26)
Fort Meade or Anne Arundel County or Howard County or Baltimore
OnsiteFull Time
Davis Unlimited Information Technologies
Davis Unlimited Information Technologies: Provides IT consulting and systems engineering for government agencies.
14+ YOERequires active TS/SCI, 14+ years software engineering experience, Bachelor's in CS (or 4 additional years experience), expertise in backend and systems development, containerization, CI/CD, agile, and leadership of development teams.
Java SE, Python, Git, Shell/bash, Nexus, Maven, JavaScript, HTML5, CSS3, JUnit, IDEs, Docker, Kubernetes, OpenShift, GitLab CI, SonarQube, Spring Framework, Spring Tool Suite, Grit, Jenkins, Hibernate, MySQL, Web Services, Google Web Toolkit, Vaadin
2d
Save
Mark Applied
Hide
Software Engineer (Engineer Software 3) - 29586
Aberdeen Proving Ground or United States
$97k-$104k/yr HybridFull Time
HII
HIINYSE: HII: Builds naval ships and provides global defense technology solutions.
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
2mo
Save
Mark Applied
Hide
Sr Software Developer
Annapolis Junction or Columbia
$174k-$220k/yr OnsiteFull Time
ELEVI Associates
ELEVI Associates: Provides cyber security and IT engineering for federal agencies.
20+ YOEActive security clearance with FS Poly; 20+ years as a software engineer in similar scope, or 4+ years of experience
Java, PostgreSQL, Database design, RESTful API, Docker, Power BI, Python, Power Query M, MariaDB, Elasticsearch
1mo
Save
Mark Applied
Hide
Lead Software Engineer
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience; building high-volume, low-latency transactional systems; microservices with Java/Spring Boot and Python (FastAPI/Flask); AWS services experience; SQL/RDBMS proficiency; agile/SCRUM and experience with AI-assisted development tools.
Java, Python, Spring Boot, FastAPI, Flask, S3, DynamoDB, ECS, EKS, RDS, Lambda, ALB, NLB, GitHub Copilot, Claude, Splunk, Dynatrace, Grafana, RDBMS, SQL, JDBC, Databricks
3mo
Save
Mark Applied
Hide
Software Engineer
Chicago or St. Louis or Philadelphia
$75k-$95k/yr HybridFull Time
ProSight Financial Association
ProSight Financial Association: Professional association for financial services research and training.
3+ YOE3+ years software engineering experience with .NET/C#, SQL, Microsoft Azure (Functions, App Services, DevOps), front-end skills (HTML, CSS, JavaScript, React.JS/Angular JS), containerization (Docker, Kubernetes), and CI/CD practices.
.NET, C#, SQL, Microsoft Azure, Azure Functions, Azure App Services, Azure DevOps, HTML, CSS, JavaScript, React.JS, Angular JS, Docker, Kubernetes, Microsoft SQL Server, MySQL, PostgreSQL, Terraform, ARM templates, PHP, CI/CD, RESTful APIs