Jobs at Expression Networks, LLC

Supports functional and regression testing for Pega applications within the DEA ICDE modernization program. Responsibilities include designing and executing test cases, validating requirements, documenting defects and test results, maintaining QA artifacts, supporting user acceptance testing, participating in Agile ceremonies, and collaborating with developers, business analysts, and senior QA professionals. The role is primarily onsite at DEA Headquarters and requires a Secret clearance with willingness to pursue TS/SCI.

Designs and executes functional, regression, interoperability, and user acceptance testing for Pega applications supporting a DEA modernization program. Translates requirements and acceptance criteria into test scenarios, tracks and retests defects, analyzes risks and results, maintains test suites, and collaborates with engineering, business analysis, and product teams throughout Agile development iterations. The role also supports test planning, validation reporting, continuous QA improvement, and Agile ceremonies.

Supports ETL pipeline development, legacy data migration, data transformation, validation, profiling, cleaning, and integration for a secure DEA modernization program. Collaborates with technical and business teams, monitors pipeline performance, troubleshoots issues, documents data flows and migration results, and participates in Agile development activities under senior engineer guidance.

Designs and maintains scalable ETL pipelines for structured and unstructured data, supporting DEA legacy-data migration, validation, integration, and modernization. The role improves data quality, interoperability, reliability, and cloud-platform performance while preparing data for analytics and AI/ML use cases. Responsibilities include source-to-target mapping, troubleshooting, documentation, stakeholder collaboration, and participation in Agile development.

Lead design and management of secure Azure cloud infrastructure and DevSecOps CI/CD pipelines for DoD environments. Implement IaC, container orchestration, security controls, RMF/RMF documentation, vulnerability remediation, monitoring, and incident response to ensure resilient, compliant delivery of mission-critical data and ML applications.

Design, deploy, and maintain secure Azure-based cloud infrastructure and DevSecOps CI/CD pipelines for classified environments. Ensure DoC compliance, lead security assessments and RMF documentation, implement IaC and container solutions, monitor system reliability, and support incident response for mission-critical data and ML applications.

Design, build, test, and maintain front-end and server-side applications using JavaScript/TypeScript (React, Node.js). Ensure responsive, high-quality code, debug issues, work across cloud environments and databases, and produce technical documentation.

Designs and deploys scalable data pipelines, preprocessing workflows, feature-engineering services, and machine learning models for secure Department of Defense environments. Develops reproducible, tested, containerized data and ML services using Python, Spark, Databricks, Docker, Terraform, SageMaker, and MLflow. Performs exploratory analysis, visualization, data storytelling, model evaluation, and decision-support development while collaborating with product, software, platform, DevSecOps, data science, and mission teams.

Provides architectural guidance and technical standards for secure, scalable data, analytics, and AI/ML platforms. Designs and operationalizes pipelines, data products, MLOps workflows, integrations, governance, CI/CD, monitoring, and data-quality practices across Databricks and Palantir Foundry. Guides teams in moving prototypes to production, optimizing Spark workloads, implementing secure data sharing, and resolving architecture and performance issues. Collaborates with engineering, data science, security, BI, platform, and mission stakeholders in cleared environments.

Designs, develops, integrates, tests, deploys, and sustains software and AI/ML capabilities in AWS GovCloud IL5 environments. Translates complex requirements into scalable architectures, supports DevSecOps, CI/CD, infrastructure as code, configuration management, cybersecurity, RMF, ATO, and testing processes. Troubleshoots production issues, develops technical documentation, collaborates with Government and contractor stakeholders, and supports ongoing application enhancement and sustainment for DLA.

Lead technical authority for enterprise software architecture supporting DISA JPES/JCRM. Define scalable, secure cloud-native and hybrid architectures (Azure IL6), guide DevSecOps/CI/CD, ensure RMF/STIG/ATO compliance, lead multidisciplinary Agile teams, oversee integrations, releases, and sustainment, and present architecture to senior government stakeholders.

Lead RMF implementation and cybersecurity for DoD systems, manage eMASS documentation, conduct vulnerability and STIG compliance assessments, track POA&Ms, support ATO activities, integrate security across DevSecOps and cloud (Azure IL6), and serve as primary cybersecurity liaison with government stakeholders for classified and unclassified environments.

Lead DISA sustainment program execution as primary government interface. Oversee cost, schedule, staffing, quality, risk, Agile software sustainment, DevSecOps, cloud/infra, cybersecurity, Tier III support, CDRLs, IMS, subcontractors, and compliance with DoD/DISA standards to ensure on-time, on-budget mission support.