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Position Title: Senior Software Engineer (Subject Matter Expert Software Developer, Application)

Location: Remote (U.S.)

Client: Federal Government Programs

Employment Type: Full-Time | Contract

Work Authorization: U.S. Citizenship required. Candidates must be eligible to obtain and maintain a favorably adjudicated Federal Public Trust suitability determination.

Job Summary

WINTrio LLC is seeking an experienced Senior Software Engineer to design, develop, integrate, deploy, and sustain full-stack software and AI-enabled applications supporting mission-critical Federal programs.

This position will support development of production-quality applications across front-end, middleware, back-end, database, cloud, and infrastructure layers. The successful candidate will build scalable applications using modern software frameworks, support AI application integration, manage CI/CD and Infrastructure as Code, and improve application performance, reliability, observability, and maintainability.

The ideal candidate will possess extensive experience in full-stack software engineering, software architecture, relational databases, Agile development, cloud computing, DevOps, and modern application frameworks such as the PERN stack.

Job Responsibilities

• Design, develop, test, deploy, maintain, and improve enterprise software applications.
• Develop full-stack solutions across front-end, middleware, APIs, back-end services, and relational databases.
• Develop applications using technologies such as PostgreSQL, Express.js, React.js, and Node.js.
• Build responsive, human-centered front-end solutions using HTML, CSS, JavaScript, and modern JavaScript frameworks.
• Develop scalable APIs, microservices, integration services, and application interfaces.
• Support integration of generative AI, RAG, predictive analytics, document processing, and other AI services into enterprise applications.
• Analyze user requirements, information needs, system flows, data usage, and business processes.
• Determine system specifications, architecture requirements, interfaces, and technical implementation approaches.
• Develop applications using multiple frameworks and modern software engineering tools.
• Design and optimize relational database structures and application data access patterns.
• Implement infrastructure using Terraform and other Infrastructure as Code technologies.
• Develop and maintain CI/CD pipelines supporting automated application build, testing, deployment, and release.
• Manage Git-based source code, branching, versioning, and collaborative development workflows.
• Integrate observability, monitoring, logging, and application performance tools into software solutions.
• Perform application testing, debugging, performance analysis, and root cause troubleshooting.
• Conduct systems analysis and recommend technical, architectural, process, or performance improvements.
• Direct or support system installation, upgrades, releases, and production deployments.
• Collect, analyze, and summarize development, performance, and service issues.
• Participate in Scrum and Agile ceremonies, sprint delivery, demonstrations, and iterative development.
• Support secure software development, role-based access control, data management, and ATO requirements.
• Develop accessible user interfaces and ensure applicable ICT solutions support Section 508 compliance.

Required Qualifications

• Bachelor's or Master's degree in Computer Science, Artificial Intelligence, Machine Learning, Software Engineering, or a related field.
• Five (5) to ten (10) years of relevant software development or software engineering experience.
• Extensive experience in enterprise software development and scripting.
• Experience working within Scrum or Agile software development environments.
• In-depth knowledge of relational databases.
• Hands-on experience developing applications using multiple frameworks.
• Strong proficiency with software engineering tools and software architecture.
• Strong full-stack development experience.
• Experience with PERN or comparable modern full-stack technologies, including PostgreSQL, Express.js, React.js, and Node.js.
• Experience with Terraform or comparable Infrastructure as Code technologies.
• Expertise managing CI/CD pipelines.
• Strong experience with Git-based source code management.
• Experience integrating observability tooling into software engineering environments.
• Experience supporting software installation, upgrades, and production releases.
• Strong understanding of the Software Development Life Cycle.
• Excellent analytical, technical troubleshooting, and problem-solving skills.
• U.S. Citizenship required.
• Ability to obtain and maintain favorable Federal Public Trust suitability.

Technical Areas

• Full-Stack Development
• Front-End Development
• Back-End Development
• Middleware
• REST APIs
• Microservices
• Enterprise Application Development
• PERN Stack
• PostgreSQL
• Express.js
• React.js
• Node.js
• Front-End Engineering
• HTML
• CSS
• JavaScript
• React.jsUI/UX
• Prototyping
• Section 508 Accessibility
• Software Architecture
• Application Architecture
• Software Design
• System Integration
• Relational Databases
• Cloud-Native Applications
• Distributed Systems
• DevOps & Automation
• Terraform
• Infrastructure as Code
• CI/CD
• Git
• Automated Testing
• Deployment AutomationObservability & Performance
• Application Monitoring
• Logging
• Performance Engineering
• Debugging
• Dev Tools
• Page Performance
• Tools & Platforms
• Programming & Frameworks
• JavaScript
• React.js
• Node.js
• Express.js
• HTML
• CSS
• Databases
• PostgreSQL
• Relational Databases
• DevOps
• Terraform
• Git
• CI/CD Pipelines
• Infrastructure as Code
• Cloud & AI Environments
• Microsoft Azure
• AWS
• Google Cloud Platform
• Microsoft 365
• ServiceNow
• Engineering
• REST APIs
• Observability Tools
• Testing & Debugging Tools
• Browser Development Tools

Preferred Qualifications

• Experience supporting Federal software development or digital modernization programs.
• Experience developing production applications integrating Generative AI, RAG, ML, or cloud AI services.
• Experience building cloud-native applications across Azure, AWS, or GCP.
• Experience with human-centered design and modern UI/UX development.
• Experience developing Section 508-compliant applications.
• Experience supporting Federal ATO, access control, security, and data management requirements.
• Experience supporting enterprise applications through development, deployment, operations, and sustainment.

Work Environment

Full-time position.

The primary place of performance is virtual.

Standard operating hours are generally Monday through Friday, 8:00 AM to 4:30 PM Eastern Time.

Occasional work outside normal business hours may be required based on mission needs.

All work must be performed within the United States.

WINTrio Benefits

• Healthcare (Medical, Dental, and Vision)
• Flexible Spending Account (FSA) and Health Savings Account (HSA)
• 401(k) and Retirement Savings Plan
• Annual Bonus and Profit Sharing Opportunities
• Paid Time Off (PTO) and Vacation
• Employee Assistance Program (EAP)
• Life, Personal, and Voluntary Disability Insurance

Growth Opportunities

This position provides opportunities to work on full-stack development, cloud-native engineering, artificial intelligence, Generative AI, DevSecOps, software architecture, enterprise modernization, and mission-critical Federal technology programs. WINTrio is an employee-driven company where innovation, technical excellence, collaboration, and professional growth are fundamental to our success.

Equal Opportunity Employer

WINTrio LLC is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, age, disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.