ECS · 9 hours ago
Application Developer
Fairfax, VA
Full-time
Hybrid
Senior Level, Lead/Staff
12+ years expECS is a leading mid-sized provider of technology services to the United States Federal Government, and they are seeking an Application Developer to implement a new cloud-based application. The role involves leading the development of this application while integrating AI capabilities and collaborating with various teams to ensure scalable and secure architectures.
Artificial Intelligence (AI)Cloud ComputingCyber SecurityLegalConsultingSoftwareInformation TechnologyCloud InfrastructureComplianceMachine LearningSecurity
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Integrate COTS products, use APIs, interact with data repositories, cross-domain solutions, and manage system interfaces
Manage legacy code and/or develop new code using container technologies
Develop and execute unit tests to verify code meets functional requirements
Resolve integration issues, vulnerabilities, and functional defects
Develop, implement, and maintain full-stack software solutions for AI-enabled applications
Evaluate and implement containerization technologies (Docker, Kubernetes) and cloud platforms (AWS GovCloud, Azure Government)
Partner with data engineering and cloud infrastructure teams to develop scalable, secure architectures
Develop proof-of-concept (POC) models and guide the transition to full-scale production deployment
Provide technical guidance to leadership on AI capabilities, resource requirements, and best practices
Hands-on experience defining JSON schemas and working with RESTful APIs
Solid background in object-oriented programming, particularly using Java
Experience working with JSON-based data structures and databases
Familiarity with development and testing tools such as XML Spy and Postman
Strong understanding of the Software Development Life Cycle (SDLC), including Agile and Waterfall methodologies
Proven ability to gather requirements, document technical and business processes, and translate business needs into technical solutions
Experience with data analysis and database technologies such as SQL and Oracle
Strong verbal and written communication skills, with the ability to work effectively with both technical and non-technical stakeholders
Other duties, as assigned
Qualification
Required
U.S. Citizen
Ability to obtain and maintain a Top Secret with SCI security clearance
Bachelor's degree in Computer Science, Engineering, Data Science, or related field
Active DoD 8140 IAT Level II or higher (e.g., CompTIA Security+)
12+ years of IT experience with large integrated projects and 5+ years of professional experience in Java and Python development, preferably in federal or defense contracting environments
Experience utilizing co-pilot, Github, and Kafka
Expertise with AWS and familiarity with their AI/ML service offerings
Demonstrated experience modernizing legacy systems into the cloud
Strong knowledge of data pipelines, APIs, microservices, and integration architectures
Ability to assess organizational needs, develop technology roadmaps, and communicate complex solutions to technical and executive stakeholders
Strong knowledge of Java SE/EE, Spring Boot, and RESTful services
Familiarity with cross-domain solution architectures, data labeling, and secure data transfer protocols
Experience working in secure environments, preferably within the Department of War, and understanding of FISMA, NIST, or RMF compliance
Proficiency with build tools, version control (Git), and CI/CD tools (Jenkins, GitLab CI)
Understanding of secure coding practices and experience with static/dynamic code analysis tools
Ability to work independently or within a cross-functional Agile team
Strong problem-solving and decision-making capabilities, with a proven ability to weigh the relative costs and benefits of potential actions and identify the most appropriate solution
Highly developed interpersonal and oral/written communication skills, with the ability to effectively and professionally interact with a diverse set of stakeholders (from peers to end-users to executive management)
Preferred
Active Secret Clearance
Company
ECS
ECS is a fast-growing 4,000-person, $1.2B provider of advanced technology solutions for federal civilian, defense, intelligence, and commercial customers.
1001-5000 employees
Funding
Current Stage
Late StageTotal Funding
unknown2018-01-31Acquired
2015-04-10Private Equity
Leadership Team
Keith McCloskey
VP / Chief Technology Officer
Ryan Garner
Chief Financial Officer
Recent News
Business Wire
2026-01-22
2025-11-19
2025-03-26
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