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1,319 applications developer jobs at 423 companies in Leesburg, VA

3mo
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Applications Developer - SME
Sterling or Herndon
$122k-$253k/yr OnsiteFull Time
Nightwing
Nightwing: Advanced cyber, intelligence, and systems integration services for national security.
Experienced full-stack developer with AI/ML integration, Agile development, production web application development, unit testing, documentation, and stakeholder communication.
AI/ML, ETL, Agile
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2mo
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Applications Developer II
Arlington, Virginia, United States
$75k-$94k/yr RemoteFull Time
Solutions³ LLC
Solutions³ LLC: Woman-owned cybersecurity and IT management consulting firm serving government, defense, and commercial organizations.
2+ YOERequires U.S. citizenship, active Secret clearance with TS/SCI eligibility, DHS suitability, 2+ years of application development, Python and Linux experience, and a relevant bachelor's degree or equivalent experience.
Python, Linux, Ansible, Terraform, Git-CI, Docker, OpenShift, RHEL, Alma, RESTful, Kubernetes, Redshift, CloudFormation, JSON, MongoDB, MinIO, Vue.js, React, HTML, Podman, AWS, View Jazz Framework, CI/CD
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3w
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Applications Developer (Senior)
Fort Belvoir, Virginia, United States
OnsiteFull Time
Eiden Systems Consulting
Eiden Systems Consulting: Veteran-owned IT and mission-support contractor serving defense and intelligence communities.
5+ YOEBachelor's degree in computer science, information systems, engineering, business, or related field; active Secret clearance (IT-II); 5+ years software/application development experience; experience with low-code/no-code platforms, BPMN tools, APIs, Microsoft SQL Server, .NET, and Agile methodologies.
Appian, Salesforce, Nintex, Microsoft SQL Server, Microsoft .NET, Java, HTML, AngularJS, JavaScript, SOAP, REST APIs
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6d
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Internal Applications Developer
Gaithersburg, Maryland, United States
OnsiteFull Time
Autoscribe
Autoscribe: Privately held U.S. financial technology providing payment processing and financial institution data to billers and institutions.
3+ YOEBachelor's degree in Computer Science, Information Systems, Business Analytics or related field or equivalent experience; 3+ years application development or business analysis; C# or Java; JavaScript UI frameworks; SQL and relational databases; strong analytical and communication skills.
C#, Java, JavaScript, Dojo, Angular, Dependency Injection, Spring Framework, Maven, Node.js, SQL, Microsoft SQL Server, Microsoft SSRS
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1w
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Applications Developer
Tysons, Virginia, United States
$81k-$140k/yr OnsiteFull Time
Air Line Pilots Association
Air Line Pilots Association: Nonprofit airline pilot union representing and advocating for commercial pilots in the United States and Canada.
3+ YOEBachelor's degree in computer science, IT, or related field required; 3+ years related experience; .NET Core, MVC, Blazor, Visual Studio, C#, SQL required; Microsoft Word and Outlook required; travel 5-10%.
.NET Core, MVC, Blazor, Visual Studio, C#, SQL, CRM, AMS, Aptify, HTML, CSS, JavaScript, Bootstrap, Microsoft Word, Microsoft Outlook
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2mo
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Enterprise Applications Developer
Washington or Baltimore
$71k-$114k/yr HybridFull Time
Corus International
Corus International: Global faith-rooted nonprofit platform delivering health, humanitarian, technology, agriculture, and economic-development solutions to communities facing extreme poverty.
5+ YOEBachelor's degree or equivalent experience, 5+ years in software development, automation, and end-user support. Requires Microsoft 365, SharePoint, CI/CD, scripting, APIs, Azure, secure development, and user-facing skills.
Microsoft 365, Power Apps, Power Automate, Office Scripts, Microsoft SharePoint, Microsoft Graph, REST, SOAP, Azure AD, Salesforce, SQL, PowerShell, JavaScript, TypeScript, Python, GitHub Actions, Azure, Azure Static Web Apps, JSON, CSV, Postman, Insomnia, SAML, OAuth2, Microsoft Security Assertion Markup Language (MSAL)
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3mo
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Applications Developer III
Arlington, Virginia, United States
OnsiteFull Time
ARSIEM Corporation
ARSIEM Corporation: Private IT consulting and engineering firm providing cybersecurity and software services to U.S. government agencies.
5+ YOE5+ years automation/data engineering experience; expertise with AWS components, Python, data pipelines, APIs, CI/CD, and automation; strong documentation and problem-solving skills.
VPC, EC2, EKS, IAM, SQS, SNS, Lambda, Route 53, S3, EMR, Kinesis, GuardDuty, CloudWatch, OpsWorks, Python, Git, Airflow, Prefect, Docker, Kubernetes, Kafka, Spark, Hadoop, CI/CD
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1mo
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Sr Advanced Applications Developer Specialist
Chantilly, Virginia, United States
$133k-$144k/yr HybridFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNew York Stock Exchange: GD: Defense electronics manufacturer and systems integrator for mission-critical solutions.
8+ YOEBachelor's in IT/Engineering or related field plus 8 years experience, or Master's plus 6 years; advanced application development experience; strong Python skills; U.S. citizenship required; certified application developer preferred.
Python, CI/CD, LLM APIs
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Applications Engineer
Brookshire or Alabama or Albany or Albuquerque or Allentown or Arlington or Atlanta or Augusta or Aurora or Austin or Bakersfield or Baltimore or Bellevue or Bend or Beverly Hills or Billings or Birmingham or Boca Grande or Boise or Bonita Springs or Boston or Boulder or Bridgeport or Bridgeville or Charleston or Charleston or Charlotte or Chaska or Chattanooga or Chesapeake or Cheyenne or Chicago or Cincinnati or Cleveland or Cocoa or Columbia or Columbus or Coral Springs or Coraopolis or Dallas or Des Moines or Deerfield Beach or Denver or Detroit or Downers Grove or El Paso or Fort Collins or Fort Myers or Fort Wayne or Fort Worth or Fresno or Grand Rapids or Green Bay or Hayward or Heber Springs or Houston or Indianapolis or Jackson or Jacksonville or Kansas City or Katy or Knoxville or Las Vegas or Lenexa or Little Rock or Long Beach or Los Angeles or Louisville or Lubbock or Madison or Mandeville or Memphis or Miami or Milwaukee or Minneapolis or Naples or Nashville or New Orleans or Newark or Omaha or Orlando or Pensacola or Philadelphia or Phoenix or Pittsburgh or Raleigh or Richmond or Salt Lake City or San Antonio or San Diego or San Francisco or San Jose or San Luis Obispo or Santa Cruz or Savannah or Seattle or Sioux Falls or Spokane or St. Louis or Sugar Land or Tampa or Tulsa or Vancouver or Washington, D.C. or Wichita
$70k-$94k/yr RemoteFull Time
Grundfos
Grundfos: Global leader in advanced pump solutions and water technologies.
5+ YOEBachelor's degree in mechanical, chemical, or related engineering; 5+ years in applications engineering, technical sales support, or system design; high-purity water, hydraulics, sizing tools, drawings, and specifications experience.
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2mo
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Senior Applications Development (Government)
Chantilly or Washington
$98k-$229k/yr OnsiteFull Time
AT&T
AT&TNYSE: T: A leading provider of telecommunications, broadband, and digital connectivity services.
5+ YOERequires 5+ years of application development experience, TS/SCI clearance with polygraph, and expertise in full-stack development, APIs, databases, Agile methods, and software lifecycle practices.
Python, Java, Node.js, JavaScript, HTML, CSS, SOAP, RESTful APIs, SQL, PHP, JSON, MySQL, PostgreSQL, MongoDB, Git, VMware, AWS, Microsoft Azure, GCP, Linux, Unix, RedHat, Rocky, Debian, Asterisk, TCP/IP, VoIP
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2mo
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Senior Applications Developer
Arlington, Virginia, United States
$165k-$230k/yr OnsiteFull Time
Bowhead Business and Technology Solutions
Bowhead Business and Technology Solutions: Alaska Native-owned business and technology consulting firm serving government, commercial, and nonprofit organizations.
8+ YOEBachelor's degree in a technical field or 10 years' equivalent experience, 8+ years' software development, cloud expertise, C++/Java, leadership, IAT Level III certification, Top Secret/SCI eligibility, and U.S. citizenship.
C++, Java, Terraform, CloudFormation, ARM templates, AWS Solutions Architect Professional, Azure Solutions Architect Expert, Google Cloud Professional Cloud Architect, Kubernetes CKA/CKAD, Docker Certified Associate
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1w
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Web Applications Developer
Suitland, Maryland, United States
$73k-$133k/yr OnsiteFull Time
Leidos
LeidosNew York Stock Exchange: LDOS: Public defense and technology contractor serving government and commercial customers with digital, health, infrastructure, and engineering solutions.
4+ YOEBachelor's degree with 4+ years or Master's with 2+ years relevant experience; active TS/SCI clearance; DoD IAT Level II certification (e.g., CompTIA Security+) or ability to obtain within 30 days; front-end web design experience; proficiency in JavaScript, Angular, Node.js, Python, and/or Perl; JSON and RESTful web services knowledge.
JavaScript, Angular, Node.js, Python, Perl, JSON, RESTful web services
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1mo
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Staff Applications Engineer
Columbia, Maryland, United States
$140k-$210k/yr HybridFull Time
Quidient
Quidient: Spatial AI specializing in Generalized Scene Reconstruction software.
8+ YOEBachelor’s degree in Computer Science or equivalent; 8+ years building complex software applications; Python and C++; API integration, debugging, and diagnostic skills. Background, citizenship, and criminal justice checks may apply.
Python, C++, AWS, JavaScript, Rust, React, WebGPU, API
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2w
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Applications/DevOps Engineer
Herndon, Virginia, United States
OnsiteFull Time
M1 Technology
M1 Technology: Private technology consulting firm delivering software solutions to federal and commercial clients.
5+ YOETS/SCI with polygraph clearance; 5+ years AWS experience with CloudFormation and SDKs; 5+ years OOP in Ruby, Python, Java, or NodeJS; Jenkins pipelines; Docker and orchestration; 5 years Bash; 2+ years GitHub.
AWS, CloudFormation, EC2, S3, RDS, Jenkins, Groovy, Ruby, Python, NodeJS, Docker, ECS, Docker Compose, Puppet, Bash, GitHub
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2mo
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Applications Engineer
York or Linthicum or Lancaster or King of Prussia or Cranberry Township or Cockeysville or Allentown or Mechanicsburg
$25-$45/hr FieldFull Time
Print-O-Stat
Print-O-Stat: Family-owned AEC reprographics and wide-format printing solutions provider serving construction, architecture, and engineering teams.
Bachelor’s degree in engineering or equivalent experience, professional Revit or Civil 3D experience, Autodesk product knowledge, strong troubleshooting and presentation skills, and willingness to travel.
Autodesk, AutoCAD, Revit, Civil 3D, Navisworks, Forma, Dynamo, Microsoft Windows, Microsoft Office Suite
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1w
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Senior AI Applications Engineer - Columbia, MD
Columbia, Maryland, United States
OnsiteFull Time
Rohde & Schwarz
Rohde & Schwarz: Global technology specializing in electronics, communications, and cybersecurity.
5+ YOEBachelor's degree in CS, software engineering, data science or related field; 5+ years production software experience in Python; LLM application development experience; SysML modeling; technical leadership; APIs, SQL, enterprise integration, CI/CD; U.S. Person capable of obtaining Public Trust clearance.
Python, Azure, SysML, SQL, CI/CD, OCR, Model Context Protocol (MCP)
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2d
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Sr. Cloud Applications Developer
Alpharetta or Dallas or Arlington or Broomfield or Gaithersburg or Lexington or Provo or San Antonio or Southfield or Tinton Falls or Tucson or Waukesha
$94k-$141k/yr OnsiteFull Time
OpenText
OpenTextNASDAQ: OTEX: Global leader in enterprise information management and software.
Understanding of FedRAMP or NIST frameworks, strong Kubernetes and container orchestration experience, AWS proficiency, Helm and Terraform expertise, Linux system administration, CI/CD experience, and on-call support.
Kubernetes, AWS, Helm, Terraform, Linux, Windows, CI/CD, Prometheus, Grafana, ELK stack, Python, Bash
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