Senior .NET Dev — Cloud, Modernization & Federal Ops

ITCON Services; Vienna (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

ITCON Services is seeking a highly experienced Senior Developer to provide operations, maintenance, and modernization of a Microsoft-based system supporting data entry, validation, certification, approval, posting, and centralized data warehousing for reporting program information.

The role will design, develop, deploy, and maintain web apps, data integrations, databases, and reports using C#, ASP.NET/.NET, SQL Server, HTML, CSS, JavaScript.

Qualifications

• Bachelor's degree in computer science, Information Systems, Software Engineering, or a related field.
• 10+ years of information technology experience, including 7+ years of hands-on software development experience.
• 5+ years developing and maintaining enterprise Microsoft web applications using C#, ASP.NET/.NET Framework or .NET, HTML, CSS, JavaScript, and related libraries.
• Advanced experience with SQL Server, stored procedures, database objects, query optimization, data validation, troubleshooting, and production data support.
• Experience supporting data warehouse, ETL, reporting, and analytics solutions, including SSRS and Excel-compatible outputs.
• Experience analyzing requirements, designing technical solutions, preparing estimates, decomposing user stories, and producing maintainable code that satisfies functional and nonfunctional requirements.
• Experience with Azure infrastructure and services, Windows Server environments, virtual machines, cloud migration, application configuration, monitoring, and operational support.
• Hands-on experience with Azure DevOps or Team Foundation Server for source control, work-item management, build and release pipelines, branching, code reviews, and deployment traceability.
• Experience building, maintaining, and troubleshooting continuous integration and continuous delivery pipelines and environment-specific release configurations.
• Strong understanding of the software development lifecycle, Agile/Scrum practices, configuration management, change control, release management, and Federal production deployment processes.
• Experience implementing change requests, production database change requests, defect corrections, emergency fixes, and application enhancements across development, test, staging, and production environments.
• Experience supporting application modernization programs, including legacy system assessment, target-state architecture, incremental refactoring, component decomposition, API and service development, data migration, cloud adoption, and retirement or transition of legacy capabilities.
• Ability to collaborate with architects, product owners, security teams, data specialists, and operations personnel to develop modernization roadmaps, technical spikes, proofs of concept, transition plans, and implementation increments that limit operational risk.
• Experience designing secure RESTful APIs, integration services, modular application components, and automated data conversion and reconciliation processes for modernized platforms.
• Experience conducting peer code reviews, unit testing, integration testing, regression support, automated testing, and requirements traceability in partnership with business and quality assurance teams.
• Experience developing or maintaining Selenium and SQL automation scripts.
• Experience supporting authentication, authorization, role-based access control, least privilege, secure coding, logging, auditability, and Federal cybersecurity requirements.
• Experience supporting Section 508 accessibility compliance and remediating application accessibility defects.
• Experience with database backup and restore, capacity planning, patching, migration, performance analysis, business continuity, and disaster recovery coordination.
• Experience applying and validating operating system, database, middleware, and application patches while minimizing service disruption.
• Experience developing and maintaining system design documents, interface specifications, deployment procedures, installation guides, database diagrams, class diagrams, release notes, and operations documentation.
• Experience providing Tier 2 and Tier 3 production support, including issue reproduction, log and data analysis, root-causes, defect resolution, escalation, and resolution validation.
• Ability to communicate complex technical concepts clearly to technical and nontechnical stakeholders.
• Strong written and oral communication skills, sound judgment, attention to detail, and ability to manage multiple high-visibility priorities independently.

Responsibilities

• Design, develop, deploy, and maintain Microsoft-based web applications, data integrations, databases, and reports using C#, ASP.NET/.NET, SQL Server, HTML, CSS, JavaScript, and related technologies.
• Modernize legacy components by assessing, defining target-state architectures, decomposing applications, and refactoring for cloud-based platforms.
• Develop application programming interfaces, reusable services, automated deployment capabilities, and data conversion solutions while ensuring continuity of mission operations and data integrity.
• Collaborate with business analysts, DBAs, infrastructure teams, security personnel, and Federal stakeholders to implement change requests and resolve production issues.
• Participate in Agile ceremonies, requirements and design reviews, effort estimation, peer code reviews, unit and integration testing, UAT support, and post-release validation.

Skills

C#

ASP.NET

SQL Server

Azure

DevSecOps

CI/CD

Git/TFS

Agile/Scrum

REST APIs

SSRS

Education

Bachelor's degree in Computer Science or related field

Tools

Azure DevOps

Team Foundation Server

SSRS

SQL Server Management Studio

Job description

ITCON Services is seeking a highly experienced Senior Developer to provide operations, maintenance, and modernization of a Microsoft-based system supporting data entry, validation, certification, approval, posting, and centralized data warehousing for reporting program information.

The role will design, develop, deploy, and maintain web apps, data integrations, databases, and reports using C#, ASP.NET/.NET, SQL Server, HTML, CSS, JavaScript.