Senior-Level InfoSec Firewall Engineer
Prosidian Consultng
Company DescriptionProSidian is a Management and Operations Consulting Services Firm focusing on providing value to clients through tailored solutions based on industry-leading practices. ProSidian services focus on the broad spectrum of Risk Management, Compliance, Business Process, IT Effectiveness, Energy & Sustainability, and Talent Management. We help forward-thinking clients solve problems and improve operations. Launched by former Big 4 Management Consultants; our multidisciplinary teams bring together the talents of nearly 190 professionals nationally to complete a wide variety of engagements for Private Companies, Fortune 1,000 Enterprises, and Government Agencies of all sizes. Our Services are deployed across the enterprise, target drivers of economic profit (growth, margin, and efficiency), and are aligned at the intersections of assets, processes, policies, and people delivering value. ProSidian clients represent a broad spectrum of industries to include but are not limited to Energy, Manufacturing, Chemical, Retail, Healthcare, Telecommunications, Hospitality, Pharmaceuticals, Banking & Financial Services, Transportation, Federal and State Government Agencies. Learn More About ProSidian Consulting at DescriptionProSidian seeks a Senior-Level InfoSec Firewall Engineer Consultant focusing on Cyber-Security/Information Security (INFOSEC) and IT Effectiveness Solution related issues, to support and maintain the Information Technology (IT) and Service Support Structures on behalf of a Federal Agency INFOSEC Directorate. INFOSEC provides a wide range of information security support services to client Members, Committees, Leadership Offices, and staff. The primary objective is to ensure the continued operation of the systems that protect the Client Agency network against unauthorized access, modification of data, and malicious activity. These systems require continuous management and monitoring to ensure they are functioning as expected and to analyze and respond to alerts as they occur.The selected Senior-Level InfoSec Firewall Engineer Consultant will work collaboratively as part of a team of six personnel for on-site support to work The Federal Agency INFOSEC Directorate. This position may require the ability to work shifts, and be on-call, to provide 24/7 technical support for the Client Agency Information Security Technology Infrastructure.DESCRIPTION OF WORK: The Client Agency has established a security architecture consisting of high availability, load balanced systems providing the necessary protection required for The Client Agency assets. The On-Site Senior-Level InfoSec Firewall Engineer Consultant will primarily provide support to INFOSEC as described above, Monday-Friday excluding Federal holidays, during an eight-hour shift. This position may require the ability to work alternate hours as required to provide technical support for The Client Agency information security technology infrastructure. This position may require travel on an as-needed basis. Travel time should be less than 4% of the period of performance.IDEAL CANDIDATE CAPABILITY REQUIREMENTS/EXPERIENCE:In addition to the requirements and ability to provide the services listed, the ideal Senior-Level InfoSec Firewall Engineer candidate meets the below requirements:- Bachelor’s degree a computer-related field plus 5 years of professional experience or equivalent work experience.- Demonstrated experience and advanced knowledge of security systems analysis, testing, and documentation;- Knowledge of virtual environments, network operating systems, mobile device environments, and data encryption methods;- Demonstrated expertise in communication protocols, network operating systems, servers, firewall implementation, Intrusion Prevention Systems (IPS) and Intrusion Detection and Prevention Systems (IDPS) Systems, and advanced malware detection systems. The required IPS/IDPS Systems are network security appliances that monitor network or system activities for malicious activity.- Must be able to multi-task and work independently on moderate to complex assignments using independent professional discretion and judgment as well as transition quickly between projects with minimal supervision;- Ability to communicate effectively, both orally and in writing, with elected officials, senior staff, information systems professionals, and technical and non-technical users;- Ability to comprehend and integrate complex computer technology and software into an effective information systems security program. Must have the ability to verify the solution meets the requirements;- Unless otherwise stated, a minimum of a secret security clearance preferred,- Ability to maintain effective working relationships with colleagues, users, contractors, and vendors; and- One or more of the following Certifications preferred (CISSP, GIAC, EnCE, CCE, CEH).WORKPLACE DELIVERABLES:Workplace deliverables (on-site) for the Senior-Level InfoSec Firewall Engineer Consultant as part of The ProSidian Cybersecurity INFOSEC Engagement Team includes documentation, briefings, and analysis reports related to the following activities:- Monitoring security systems including IDS and firewalls;- Monitoring mobile threat platforms;- Conducting analysis of active and potential virtual server problems, and providing recommendations for their resolution;- Review and revise security procedures and policies as needed;- Assist in the analysis of correlated events and their resolution; and- Provide general security-relevant services required to support INFOSEC.LOCATION | PLACE OF WORK | WORK ENVIRONMENT:The Cybersecurity INFOSEC Threat Intelligence Engineer on The ProSidian Engagement Team shall perform work at The Client Agency Office Buildings located in the Metropolitan Washington, DC area. For all other Cybersecurity INFOSEC roles on The ProSidian Engagement Team, work shall be conducted at The Client Agency facilities located in the Manassas, Virginia area with the periodic requirement to work at The Client Agency office buildings in the Washington, DC area. INFOSEC shall provide workspace, equipment, and software required to complete all work necessary to support and maintain the information technology (IT) and service support structures on behalf of a Federal Agency INFOSEC Directorate.QualificationsQualifications For Senior-Level InfoSec Firewall Engineer: INFOSEC requires a Senior-Level InfoSec Firewall Engineer to provide support in the following tasks:- Minimum 5 years of experience configuring and administering firewall technologies including but not limited: carrier class Checkpoint Firewalls; Barracuda Web Application Firewalls (WAF); and - FireMon Security Manager - Proactive Firewall Management.- Has in-depth knowledge of security operations, including firewall rules and security policies.- Strong networking ability and knowledge of firewall platforms to assist in rapid identification and isolation of issues during incidents and outages.- Collaborates to design, plan and implement new firewall architectures, upgrades, and features as necessary.- Assist in the administration of all Information Security firewalls. Performing updates, upgrades, policy administration and validation.- The engineer will assist in reviewing and implementing customer changes consistent with existing policies.- The engineer will review and update the documentation to ensure consistency with current procedures.- Manage and tune additional software blades associated with firewall architecture. (IPS, URL, Application Control, AV, Advanced Malware detection).- Regular review of Web Application Firewall (WAF) events to identify anomalous behavior.- Willingness to work outside of normal business hours to support outage resolution, planned maintenance or to implement an upgrade.Perform other official duties as assigned.Additional InformationCORE COMPETENCIESTeamwork – ability to foster teamwork collaboratively as a participant, and effectively as a team leaderLeadership – ability to guide and lead colleagues on projects and initiativesBusiness Acumen – understanding and insight into how organizations perform, including business processes, data, systems, and peopleCommunication – ability to effectively communicate to stakeholders at all levels orally and in writingMotivation – persistent in pursuit of quality and optimal client and company solutionsAgility – ability to quickly understand and transition between different projects, concepts, initiatives, or work streamsJudgment – exercises prudence and insight in decision-making process while mindful of other stakeholders and long-term ramificationsOrganization – ability to manage projects and actions, and prioritize tasks------------ ------------ ------------OTHER REQUIREMENTSBusiness Tools – understanding and proficiency with business tools and technology, including Microsoft Office. The ideal candidate is advanced with Excel, Outlook, PowerPoint, and Word, and proficient with Adobe Acrobat, data analytic tools, and Visio with the ability to quickly learn other tools as necessary.Commitment - to work with smart, interesting people with diverse backgrounds to solve the biggest challenges across private, public and social sectorsCuriosity – the ideal candidate exhibits an inquisitive nature and the ability to question the status quo among a community of people they enjoy and teams that work well togetherHumility – exhibits grace in success and failure while doing meaningful work where skills have impact and make a differenceWillingness - to constantly learn, share, and grow and to view the world as their classroom------------ ------------ ------------BENEFITS AND HIGHLIGHTSAt ProSidian, we invest in our employees to help them stay healthy and achieve work-life balance. Our full-time team members receive a comprehensive benefits package that includes Competitive Compensation, Group Health Insurance Health Benefits, 401(k) Retirement Savings Plan Contributions, Vacation and Paid Time off (PTO) Benefits, Pre-Tax Payment Programs, Purchasing Discounts & Savings Plans, a ProSidian Employee & Contractor Referral Bonus Program, Performance Incentives, etc. Our comprehensive benefits package includes a medical, dental and vision plan. Our growing list of benefits currently includes the following for internships:Competitive Compensation: ProSidian provides an opportunity to gain college credit through requirements set and approved by your university as well as a stipend granted by ProSidian Consulting when all requirements for such are met at the termination of the internship. ProSidian will work with your university to meet any and all requirements which will allow you to achieve your goals in this position and obtain college credit transferable to your school.Purchasing Discounts & Savings Plans: We want you to achieve financial success. We offer a Purchasing Discounts & Savings Plan through The ProSidian Corporate Perks Benefit Program - Helping You Do More With Less: This provides special discounts for eligible employees on products and services you buy on a daily basis.Security Clearance: Due to the nature of our management and operations consulting engagements for Private Companies, Fortune 1,000 Enterprises, and Government Agencies of all sizes; oftentimes there are Security Clearance requirements for Engagement Teams handling sensitive Engagements in the Federal Marketplace. A Security Clearance is a valued asset in your professional portfolio and adds to your credentials based on past, present, and future work.Leverageable Experience and Thought Leadership: By collaborating with firm leadership, other members of the team, as well as Fellows and collaborating partners in what is a flat organization, you'll make valuable professional connections, interact with clients daily, gain leverageable Experience, and contribute to Thought Leadership while you build a basket of marketable experiences.ProSidian Employee & Contractor Referral Bonus Program: ProSidian Consulting will pay up to $5k for all referrals (payments made after new hire has been employed for 90 days) for candidates submitted through our Employee Referral Program.Performance Incentives: Due to the nature of our management and operations consulting engagements for Private Companies, Fortune 1,000 Enterprises, and Government Agencies of all sizes there are performance incentives associated with each new client that each employee works to pursue and support.ADDITIONAL INFORMATION - See Below Instructions On The Best Way To ApplyProSidian Consulting is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, or Vietnam era, or another eligible veteran status, or any other protected factor. All your information will be kept confidential according to EEO guidelines.ProSidian Consulting has made a pledge to the Hiring Our Heroes Program of the U.S. Chamber of Commerce Foundation and the “I Hire Military” Initiative of The North Carolina Military Business Center (NCMBC) for the State of North Carolina. All applicants are encouraged to apply regardless of Veteran Status.Furthermore, we believe in "HONOR ABOVE ALL" - be successful while doing things with the right way. The pride comes out of the challenge; the reward is excellence in the work. FOR EASY APPLICATION USE OUR CAREER SITE LOCATED ON OR SEND YOUR RESUME’S, BIOS, AND SALARY EXPECTATION / RATES TO CAREERS @PROSIDIAN.COM. ONLY CANDIDATES WITH REQUIRED CRITERIA ARE CONSIDERED. Be sure to place the job reference code in the subject line of your email. Be sure to include your name, address, telephone number, total compensation package, employment history, and educational credentials.SummaryType: Full-timeFunction: ConsultingExperience level: Mid-Senior LevelIndustry: Management Consulting
- General information Job Posting Title Senior Firewall Engineer (Palo Alto SME) Date Thursday, July 9, 2026 City Arlington... ...Maintain hardware and software components at vendor-supported levels to ensure operational integrity. - Support mission-critical...SeniorMinimum wageFull timeContract workTemporary workWork experience placementWork at office
- ...DescriptionProSidian seeks a Mid-Level InfoSec Threat Intelligence Engineer Consultant focusing on Cyber-Security... ...network operating systems, servers, firewall implementation, Intrusion... ...in writing, with elected officials, senior staff, information systems professionals...SuggestedFull timeFor contractorsWork experience placementInternshipWork at officeMonday to FridayShift work
- DescriptionThis is a senior firewall position within the Vanguard Contract, providing general engineering support to multiple firewall and perimeter security systems and devices. The well qualified candidate will possess and apply comprehensive knowledge regarding perimeter...SeniorContract workWork at office
- ...Senior Firewall Engineer Join our client in DC as a Senior Firewall Engineer, where you'll be a crucial member of the Digital Technology Firewall Management and Network Security Team, operating during the day shift. Bring your extensive expertise in firewall and network...SeniorWork at officeRemote workDay shift
- Job TitleSenior Systems Engineer Level 5LocationWashington, DC 20032 US (Primary)CategoryResearch, Development, and EngineeringJob TypeFull... ...Clearance RequiredTS/SCIJob DescriptionPrescient Edge is seeking a Senior Systems Engineer Level 5 to support a federal government...SeniorContract work
- DescriptionThe Senior Information Security Engineer supports the InfoSec mission of securing the patient experience. This position applies existing experience... ...applications and systems including network devices, firewalls, asset management tools, access management systems...SeniorWork experience placement
- ...and State Government Agencies. Learn More About ProSidian Consulting at DescriptionProSidian Consulting Seeks an Senior Level Energy Programs Engineering Advisor to support requirements that address the global demand for, and use of, modern energy services by fostering...SeniorFull timeContract workTemporary workFor contractorsWork at officeRemote workFlexible hours
- ...at DescriptionProSidian seeks a Mid-Level InfoSec Security Engineer (With Focus On Securing Virtual Machines... ...network operating systems, servers, firewall implementation, Intrusion Prevention... ...in writing, with elected officials, senior staff, information systems professionals...Full timeFor contractorsWork experience placementInternshipWork at officeMonday to FridayShift work
$190k - $304k
ResponsibilitiesPeraton is seeking an experienced Senior Unified Communications Engineer, to join our dynamic Network and... ..., troubleshooting, and analysis of firewalls, Intrusion Detection Systems (IDS),... ...teams to resolve enterprise-level communications and networking...SeniorContract workShift work$115k - $140k
...currently hiring a highly experienced Senior Systems Engineer to support critical infrastructure modernization... ...: DoD 8570 IAT Level II or higher (e.g., Security+ CE, CySA+... ...network configuration (TCP/IP, routing, firewalls).Experience engineering virtualized environments...SeniorCurrently hiring- Senior Systems Engineer - HPE Campus and BranchThis role has been designated as ‘Remote/Teleworker’,... ...will develop and maintain specialist-level expertise across:HPE Mist AI and Marvis... ...routing, switching, multicast, QoS, ACLs, firewalls, segmentation, and resiliency....SeniorFull timeWork experience placementLocal areaImmediate startRemote workWork from home
- ...Senior Cybersecurity Engineer Location VA - Arlington Job Code 14210 of openings 1 Apply Now... ...terrain, to include but not limited to: Firewall management Host intrusion... ...field. Required to be certified IAT level III (CASP, CCNP, CISA, CISSP) REQUIRED...SeniorFull time
$113k - $188k
...Top Secret SCI (TS/SCI)As a Senior Consultant in Guidehouse’s cyber... ...You’ll combine hands on SIEM engineering with client facing consulting... ...(or equivalent DoD 8570 IAT Level II)AWS Certified Security -... ...Experience integrating SIEM with IDS, firewalls, and endpoint security tools...SeniorFull timeFlexible hours$145k - $170k
DescriptionAs a Senior Cybersecurity Operations Engineer, you lead the charge in safeguarding our organization'... ...Endpoint Detection and Response (EDR), Firewalls, M365 Cloud security, Defender for... ..., and NDR, as well as enterprise-level continuous monitoring and incident...SeniorTemporary workWork at officeLocal areaFlexible hours$92.3k - $166.85k
...Operation within Leidos’ Digital Modernization Group is seeking a Firewall Engineer to support the Compartmented Enterprise Services Office (CESO... ....Maintain all HW and SW components at vendor supported levels.Support mission-critical Continuity of Operations (COOP).Conduct...Full timeContract workTemporary workWork at office- DescriptionThis is a mid-level firewall engineer position within the Vanguard contract, providing networking engineering support to multiple firewall and perimeter security systems and devices. The well qualified candidate will possess and apply knowledge regarding perimeter...Contract workWork at office
$131.3k - $237.35k
...have an IMMEDIATE NEED for a Sr. Systems Engineer to provide technical support for the... ...architecture suite Management of Juniper routers, firewalls, and switches via Juniper Space Juniper... ...50.00 The Leidos pay range for this job level is a general guideline only and not a...SeniorLocal areaImmediate start$100k - $115k
...The Washington Commanders are seeking a Senior Systems Engineer to own the compute, cloud, and... ...across the device fleet. Own platform‑level data hygiene: directory and identity cleanup... ...networking fundamentals (TCP/IP, VLANs, VPNs, firewalls) to partner effectively with the...Senior- Job Role: Senior Reverse EngineerRequired Skills: - Strong experience in software and/or hardware reverse engineering- Expert-level understanding of software and/or hardware vulnerabilities and practical exploitation techniques- Experience developing in an assembly language...Senior
$135k - $216k
ResponsibilitiesWe are seeking an experienced Senior Systems Engineer with expertise in systems integration, testing, and enterprise engineering... ...or Intelligence Community.What You'll DoLead and mentor mid-level and junior engineers across systems engineering, integration...SeniorContract workRemote workShift work- Job Role: Senior Reverse EngineerLocation: New York City and Washington DCDuration: Full time/100% OnsiteClearance: Active Secret... ...of proven experience in software and/or hardware reverse engineering- Expert-level understanding of software and/or hardware vulnerabilities...SeniorFull time
- ...0k - $260kA leading embedded security firm is hiring a Reverse Engineer to join their team supporting advanced research and real-world... ...is a full time, hybrid role in the DC metro area focused on low level reverse engineering, vulnerability research, and exploit development...SeniorFull time
$114k - $273k
...Department and Location Department: Engineering Location: Arlington, VA... ...company, is seeking a Senior Systems Engineer to be part of... ...progress and priorities across all levels of the organization.... ...services, intrusion detection, and firewall. Familiarity deploying virtual...SeniorFull timeWork at officeImmediate startRemote work$180k - $200k
Job DescriptionEverforth ECS is seeking a Senior Zscaler Engineer to work in our Washington, DC officeCybersecurity professional responsible for... ..., Strong grasp of TCP/IP, DNS, routing, VPNs, and firewalls.Cloud & SASE Concepts, Familiarity with Zero Trust principles...Senior- ...professionally? We can help! We are seeking a Senior Cybersecurity Operations Engineer to provide on-demand Cybersecurity... ...tools (SIEM,Syslog, NDR, EDR, firewalls, M365 security, Defender for Cloud,... ...minimalsupervision at a senior level Must meet Public Trust clearance...SeniorFull timePart time
$146k - $234k
...delivering advanced mission planning, digital engineering, and command‑and‑control capabilities... ...complex, multi‑system environment.As a Senior Requirements Engineer, you will... ...document mission planning and component-level specifications. You will ensure requirements...SeniorContract workShift work- ...New Development Projects have been appraised at CMMI Maturity Level 5, positioning us as one of a handful of elite companies to... ...highest form of third-party validation. is searching for a Senior Circuit Engineer to lead the design, implementation, and maintenance of...SeniorFull timeContract workLocal area
$113.2k - $237.8k
Job Title: Senior Endpoint EngineerJob Category: Information TechnologyTime Type: Full timeMinimum... ...:CACI is seeking a Senior Endpoint Engineer to join our team on a contract supporting... ...Windows workstations patched to correct levels- Create and deploy Intune configurations,...SeniorContract workTemporary workWork experience placementFlexible hours$168k - $231k
...moving forward, you’ll fit right in. Senior Systems Engineer Available Locations Austin Atlanta Denver... ...engineer who can move between low-level systems, distributed services, and API... ...network namespaces, service supervision, firewall, packet and flow debugging, and a...SeniorTemporary workLocal areaRemote workFlexible hours- ..., network changes etc. Basic level of trouble shooting on every... ...issues in VMs, Load balancers, Firewalls, API Gateways, DB, Network,... ...Server, My SQL and Mongo DB Seniority level Seniority level Mid-Senior... ...for “Senior Site Reliability Engineer” roles. Bellevue, WA $204,000...SeniorContract workRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior-Level InfoSec Firewall Engineer. Be the first to apply!
- senior business analyst Washington DC
- senior cost estimator Washington DC
- senior contract specialist Washington DC
- senior manager tax Washington DC
- senior automation engineer Washington DC
- senior devops Washington DC
- senior recruiter Washington DC
- senior property manager Washington DC
- senior paralegal Washington DC
- senior associate vice president Washington DC

