Mid-Level Application Developer - DHS

cFocus Software Incorporated•Springfield, VA

9d•Remote

About The Position

cFocus Software is seeking a Mid-Level Application Developer to join our program supporting the Department of Homeland Security (DHS). This position is remote and requires a Public Trust Clearance. The role involves designing, developing, and maintaining custom geospatial and situational-awareness applications and tools for various mission environments. Responsibilities include developing application components using .NET framework, C#, ESRI APIs, and Python scripting for automation. The developer will create custom web applications, configure dashboards, and support integrations with various data formats and enterprise systems. Emphasis is placed on building maintainable, secure, and well-documented code, participating in code reviews, and supporting deployments and testing activities. The position also requires close coordination with various DHS teams and stakeholders, monitoring application health, and creating technical documentation.

Requirements

Bachelor’s or master’s degree in IT, Computer Science, Geography or a related field.
5+ years of professional application-development experience, including at least three years developing or supporting geospatial, mapping, location-intelligence, data-visualization, or situational-awareness solutions.
Demonstrated experience developing and maintaining applications using C# and the .NET framework.
Experience using ESRI developer technologies such as ArcGIS Enterprise/Portal, ArcGIS Online, ESRI APIs and SDKs, ArcGIS API for JavaScript, Experience Builder, Dashboards, web maps, hosted layers, or comparable capabilities.
Proficiency with Python scripting and automation; experience with ArcGIS Notebooks, Jupyter notebooks, or comparable notebook-based workflows.
Experience developing and consuming REST APIs, integrating enterprise systems and data services, and working with JSON/GeoJSON, relational databases, geodatabases, and common geospatial formats.
Experience creating automated tests and executing unit, integration, regression, security, and operational test activities within a controlled software-delivery lifecycle.
Experience with Git-based source control and Agile delivery tools such as GitLab, Jira, and Confluence.
Strong analytical, troubleshooting, documentation, communication, and cross-functional collaboration skills.
Ability to satisfy DHS suitability, background-investigation, Entry on Duty, security, and system-access requirements for the assigned position.
Experience developing applications for DHS, another federal agency, public safety, emergency management, critical infrastructure, intelligence, defense, or homeland-security missions.
Experience deploying or supporting ESRI and custom web applications in AWS or another enterprise cloud environment.
Knowledge of ArcGIS Enterprise administration concepts, identity integration, role- and attribute-based access control, geospatial data publishing, and enterprise geodatabase patterns.
Experience with Section 508/WCAG accessibility, secure coding, DevSecOps pipelines, static or dynamic application-security testing, and vulnerability remediation.
Working knowledge of IPv6/dual-stack application design, federal cloud and security requirements, DHS SELC artifacts, and formal change-control boards.
Experience with AI-enabled geospatial workflows, automated data ingestion, real-time dashboards, performance monitoring, or high-availability mission applications.

Responsibilities

Design, develop, enhance, debug, and maintain custom geospatial and situational-awareness applications and tools for the GII, COP, and HIFLD mission environments.
Develop and maintain application components using the .NET framework, C#, ESRI APIs and SDKs, and other Government-approved technologies in the existing GCIS technical architecture.
Create custom web applications using ESRI Experience Builder and the ArcGIS API for JavaScript; configure interactive dashboards, web maps, layers, symbology, pop-ups, labeling, and mission-focused visualization experiences.
Participate in application and data architecture decisions involving client/server processing, relational and geospatial databases, data storage and access, interfaces, interoperability, and enterprise integration.
Build maintainable, reusable, and well-documented code that supports evolving operational requirements, system scalability, reliability, security, and efficient lifecycle maintenance.
Maintain compatibility with current ESRI software releases and implement approved features, fixes, and enhancements without unnecessary disruption to ongoing operations.
Develop Python and ArcGIS Notebook scripts that automate geospatial data processing, analysis, ingestion, publishing, monitoring, and reporting tasks.
Implement automated workflows that reduce manual intervention and reliably process structured and unstructured geospatial information in supported formats.
Support integrations and ingestion involving CSV, TXT, GPX, JSON, GeoJSON, geodatabases, shapefiles, KML, BIM, LAS, APIs, and REST services.
Implement geocoding and locational metadata capabilities using addresses, latitude/longitude, Military Grid Reference System (MGRS), and United States National Grid (USNG) coordinates as required.
Evaluate and implement approved AI-assisted or AI-driven workflow enhancements that improve efficiency, adapt to real-time data, and optimize geospatial handling while complying with DHS policy and governance.
Integrate geospatial applications, web services, data feeds, identity services, databases, and other enterprise systems to improve mission functionality and secure information sharing.
Develop testing criteria from operational requirements and key performance parameters; create comprehensive test plans, test scripts, test cases, and traceable expected results.
Develop and maintain manual and automated tests; conduct developmental, integration, regression, security, accessibility, and operational testing and capture evidence and results.
Analyze test outcomes, document defects, troubleshoot root causes, implement corrective actions, and report conclusions and recommendations.
Participate in code reviews, configuration management, change-impact analysis, release readiness reviews, and validation that only approved and tested changes are incorporated.
Produce per-release custom application code, test artifacts, integration documentation, technical specifications, data-flow diagrams, and integration-test results.
Support deployments, upgrades, releases, emergency fixes, and application enhancements across development, staging, preproduction, and production environments.
Prepare deployment documentation and obtain required approvals before releases: SDD Change Control Board approval for preproduction and both SDD CCB and Infrastructure Change Control Board approval for production.
Coordinate application activities with the DHS Enterprise Cloud Team, OneNet, DHS data centers, AWS providers, system administrators, security teams, and other technical stakeholders.
Diagnose and resolve application defects, integration issues, performance problems, and user-reported incidents; document solutions and escalate complex infrastructure or specialized issues appropriately.
Monitor application health, utilization, reliability, availability, maintainability, performance, and user feedback; recommend and implement approved improvements.
Create and update technical documentation, installation and deployment instructions, user guides, FAQs, troubleshooting materials, SOPs, and knowledge-base content.