Security Engineer

Serco; Arlington (VA); On-site; USD 110,000 - 150,000; Full time

Job summary

Serco is seeking a Security Engineer III in Arlington, VA to provide technical leadership in designing, implementing, and sustaining cybersecurity capabilities across mission systems and product lines, working on-site with government customers and program teams.

You will collaborate with engineers, system administrators, and other stakeholders to ensure compliance, operational effectiveness, and risk reduction in a fast-paced environment.

Qualifications

• Bachelor's degree in Computer Science or related field.
• 5 years of cybersecurity experience.
• Active Secret clearance and Security+ certification.
• Experience with Linux, Windows, enterprise networking, and cloud infrastructures.
• Experience with Army RMF, NIST cybersecurity standards, DISA STIGs, POA&M, security automation, and vulnerability management.

Responsibilities

• Provide technical leadership in design, implementation, sustainment, and optimization of cybersecurity capabilities across mission systems and product lines.
• Collaborate with government customers, program leadership, system administrators, engineers, developers, and other teams to ensure cybersecurity compliance and operational effectiveness.
• Manage and complete tasks in a fast-paced, results-driven environment.

Skills

Security+ Certificate

Active Secret Clearance

Linux

Windows

Enterprise Networking

Cloud Infrastructure

Army RMF

NIST & STIGs

Risk Analysis

Technical Leadership

Collaboration

Education

Bachelor's degree in CS

Job description

Position Description & Qualifications

Serco is seeking a highly motivated Security Engineer III. In this role, you will provide technical leadership in the design, implementation, sustainment, and continuous improvement of cybersecurity capabilities across mission systems and product lines. Working closely with government customers, program leadership, engineers, system administrators, and other stakeholders, you will help ensure cybersecurity compliance, operational effectiveness, and risk reduction in a dynamic, mission-focused environment. This position offers the opportunity to contribute to critical national security initiatives while supporting on-site customer operations.

As a Security Engineer, you will:

• Provide technical leadership in the design, implementation, sustainment, and continues improvement of cybersecurity capabilities supporting mission systems and product lines.

• Collaborate closely with government customers, program leadership, system administrators, engineers, developers, and other internal and external teams to ensure cybersecurity compliance and operational effectiveness.

• Manage and complete the tasks in a fast-paced results driven environment.

To be successful in this role, you must have:

• Bachelor's degree in Computer Science or related field.

• 5 years of cybersecurity experience.

• An active Secret clearance.

• An active Security+ certificate.

• Demonstrated experience with Linux, Windows, enterprise networking, and cloud-based infrastructures.

• Proven experience with the Army RMF process, NIST cybersecurity standards, DISA STIGs, POA&M, security automation, and vulnerability management tools and processes.

• Ability to perform technical risk analysis, communicate findings clearly, and develop practical remediation recommendations.

Additional desired qualifications:

• Knowledge of Army PPB BOS financial processes

• Experience with software development life cycle

• Knowledge of A&A Processes, including ACAS and AESS deployments

• Experience supporting cloud cybersecurity architectures, preferably in AWS environments

• Knowledge of stakeholder collaboration (with Army stakeholders, AO, Security Control Assessors, etc.)

• Knowledge of version control software (Git etc.), ticket tracking system (JIRA, etc.)

Company Overview

Serco Inc. (Serco) is the Americas division of Serco Group, plc. In North America, Serco’s 9,000+ employees strive to make an impact every day across 100+ sites in the areas of Defense, Citizen Services, and Transportation. We help our clients deliver vital services more efficiently while increasing the satisfaction of their end customers. Serco serves every branch of the U.S. military, numerous U.S. Federal civilian agencies, the Intelligence Community, the Canadian government, state, provincial and local governments, and commercial clients. While your place may look a little different depending on your role, we know you will find yours here. Wherever you work and whatever you do, we invite you to discover your place in our world. Serco is a place you can count on and where you can make an impact because every contribution matters.

To review Serco benefits please visit: https://careers.serco-na.com/us/en/what-we-offer . If you require an accommodation with the application process please email: [e-mail] or call the HR Service Desk at 800-628-6458, option 1. Please note, due to EEOC/OFCCP compliance, Serco is unable to accept resumes by email.

Candidates may be asked to present proof of identity during the selection process. If requested, this will require presentation of a government-issued I.D. (with photo) with name and address that match the information entered on the application. Serco will not take possession of or retain/store the information provided as proof of identity. For more information on how Serco uses your information, please see our Applicant Privacy Policy and Notice.

Serco does not accept unsolicited resumes through or from search firms or staffing agencies without being a contracted approved vendor. All unsolicited resumes will be considered the property of Serco and will not be obligated to pay a placement or contract fee. If you are interested in becoming an approved vendor at Serco, please email [e-mail] .

Serco is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics.

Pay Transparency

Our Total Rewards package includes competitive pay, performance-based incentives, and benefits that promote well-being and work-life balance—so you can thrive both professionally and personally. Eligible employees also gain access to a wide range of benefits from comprehensive health coverage and health savings accounts to retirement plans, life and disability insurance, and time-off programs that support work-life balance. Program availability may vary based on factors such as contract type, location, hire date, and applicable collective bargaining agreements.

Salary range: The range for this position can be found at the top of this posting. This range is provided as a general guideline and represents a good faith estimate across all experience levels. Actual base salary will be determined by a variety of factors, including but not limited to, the scope of the role, relevant experience, job-related knowledge, education and training, key skills, and geographic market considerations. For roles available in multiple states, the range may vary to reflect differences in local labor markets. In addition to base salary, eligible positions may include other forms of compensation such as annual bonuses or long-term incentive opportunities.Benefits – Comprehensible benefits for full-time employees (part-time employees receive a limited package tailored to their role):

• Medical, dental, and vision insurance

• Robust vacation and sick leave benefits, and flexible work arrangements where permitted by role or contract

• 401(k) plan that includes employer matching funds

• Tuition reimbursement program

• Life insurance and disability coverage

• Optional coverages that can be purchased, including pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection

• Birth, adoption, parental leave benefits

• Employee Assistance Plan

To review all Serco benefits please visit: https://careers.serco-na.com/us/en/about-us .

Serco complies with all applicable state and local leave laws, including providing time off under the Colorado Healthy Families and Workplaces Act for eligible Colorado residents, in alignment with our policies and benefit plans. The application window for this position is for no more than 60 days. If an applicant has any concerns with job posting compliance, please send an email to: [e-mail] .