Senior Environmental Systems Engineer

Company: Leidos
Location: Fairfax
Posted on: October 28, 2025

Job Description:

Job Description Description At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Your greatest work is ahead! The Civil Environmental & Infrastructure Portfolio at Leidos currently has an opening for a Senior Environmental Systems Engineer. The successful candidate will: • Manage a technical systems integration team (system administrators, software developers, database administrators, data managers, GIS operators) in the development, testing, and maintenance of new .NET, JavaScript, T-SQL applications, and extending the functionality of SaaS applications. • Support multiple projects related to environmental data management, logistics management, document management and search capabilities, mobile data collection, modeling, and workflow automation under contracts with the Army Corps of Engineers. • Drive collaboration and innovation across office locations and technical skill areas, ensuring performance excellence and professional growth for the information technology section. • Perform information security officer duties and be responsible for guiding the systems through the Risk Management Framework to obtain an Authorization to Operate (ATO). This responsibility includes overseeing, implementing, and validating IT security controls to ensure compliance with NIST policy and organizational mandated security requirements, ensuring the confidentiality, integrity, and availability for each assigned system, and will guide systems through re-authorization audits and continuous monitoring compliance requirements. • Develop and maintain system requirements documents, system design documents and diagrams, system hardware and software inventories, system security plans, contingency plans, incident response plans, interconnection agreements, and system-specific standard operating procedures. • Enforce SecDevOps change management lifecycle procedures, including dynamic testing, static code analysis, and peer reviews to ensure code quality across all managed systems. • Provide technology guidance to program managers and develop basis of estimates (BOEs) in support of new work opportunities. • Prepare resource estimates used in the development of proposals, ensuring BOE rationale is documented to support the resource estimates for environmental data management, geospatial data management, system development/maintenance, hosting, and software licensing support for environmental investigations and/or support activities. Senior Environmental Systems Engineer responsibilities: • Manage environmental data lifecycle across projects with stakeholders, data managers, project chemists. • Manage system development lifecycle across projects with stakeholders, system developers and administrators. • Maintain security compliance status and documentation of system environments. • Perform security reviews of new or changed code objects and system posture. • Perform audit log reviews to identify suspect activity, application errors, incidents. • Ensure systems availability, reviewing hardware resources, system backup performance, patch status. • Conduct break/fix analysis for hosted systems. • Manage team assignments and workloads, tracking tasks and deliverable progress. • Lead technology initiatives across organization contracts. Qualifications: • Bachelors Science degree and 12 years of prior relevant experience in Environmental Science, Software Development, Software Engineering, Computer Science, Cybersecurity Compliance, or related discipline; a Master’s degree with 10 years of experience will also be considered. • Demonstrate excellent written and verbal communication skills, leadership skills, and attention to detail. Strong organizational skills are essential. • Significant staff and team management experience. • Significant RCRA and CERCLA environmental investigation experience. • Proficient in .NET application development in Microsoft Visual Studio. • Ability to obtain and maintain a Public Trust security clearance (which includes three years immediate residency in the US). • Proficient in developing T-SQL statements and stored procedures in Microsoft SQL Server. • Significant NIST security compliance experience. • The position requires the ability to communicate technical information orally and in writing. • Must possess excellent organization skills and attention to detail. Preferred Qualifications: Experience with: • ArcGIS Online administration, ESRI mobile data collection, and Trimble mobile apps. • Using Earthsoft, EQuIS suite of products, and extending its functionality. • Secure coding principles and adherence to DISA STIGs. • Developing security compliance documentation and guiding systems through the ATO process. • Integrating identify federation and multi-factor authentication into applications. • Using AFCEC ERPIMS, FUDSChem, ADR.NET data management software packages. Original Posting: March 21, 2025 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $112,450.00 - $203,275.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. Remote

Keywords: Leidos, Burke , Senior Environmental Systems Engineer, IT / Software / Systems , Fairfax, Virginia