Senior Security Engineer 5503
Tier4 Group
Job Description
The Senior Security Engineer designs, implements, operates, and continuously improves the security technologies and controls across applications and supporting platforms. Primary focus is Application Security -embedding security into the SDLC and CI/CD pipelines, strengthening web/API protections, and enabling proactive detection, while contributing broadly to Security Engineering capabilities (identity, cloud/onprem security platforms, logging/telemetry, and automation). The role partners closely with development, DevOps, and operations teams to build secure-by-default applications and services.
\n \nPRINCIPAL RESPONSIBILITIES
\n- \n
- Develop and maintain software application security policies and procedures \n
- Implement software application security controls \n
- Partner with DevOps in developing a secure CI/CD pipeline \n
- Design and operate web application firewall (WAF) and API protections; tune rules, reduce false positives, and automate policy updates \n
- Identify application security vulnerabilities and issues, perform risk assessments and provide mitigations \n
- Develop security monitoring for application stack \n
- Conduct technical investigations of application security incidents \n
- Interface with senior stakeholders across the IT leadership team to proactively interpret risks and priorities. \n
- Support the diversity and inclusion strategy by following policies and procedures that ensure opportunities for employees and diverse business partners. \n
- Assist with other job duties as assigned. \n
REQUIREMENTS
\n- \n
- A minimum 6 to 8 years of experience in Application Security (designing, implementing, and operating security controls in enterprise application environments). \n
- Hands-on experience with web application security, including OWASP Top 10 vulnerabilities \n
- Hands-on experience with WAF/API security (policy design, rule tuning, automation), container security (runtime hardening, image scanning, vulnerability risk assessments) \n
- Hands-on experience with conducting web application security scans, vulnerability assessments and/or penetration testing \n
- Experience in investigating problems and processes within established methodologies and best practices. \n
- Experience working with Authentication and Authorization services like OAuth and OpenID \n
- Experience in operating on-prem or cloud-based security platforms \n
- Ability to troubleshoot security and network-related issues and communicate technical findings effectively \n
- Ability to listen and integrate ideas from diverse groups of individuals, build and maintain respectful relationships, collaborate with others, and resolve conflicts constructively. \n
- Bachelor’s Degree in Information Security or Computer Science or Computer/Electrical Engineering, and/or equivalent field experience. \n
- Proof of eligibility to work in the United States. \n
- ...Endurance IT Services is in search of Senior Security Engineer to join a client in North Virginia! This security engineer will help design, implement, and maintain enterprise security solutions that protect systems, data, and users. This role combines security engineering...SeniorFull time
$105k - $125k
NVR, Inc. is seeking a Senior Security Engineer to work on site in Reston, VANVR’s technology teams thrive on providing multiple business lines with the tools and cutting-edge technologies that support NVR’s mission to create a better living experience for our customers...SeniorWork experience placement$174k - $252k
Identify security issues and implement and design security controls, tools, and services to improve security systems and processes.Embed... ...experience in cloud security, application security, security engineering, computer and network security, or security protocols.Must...SeniorLocal area$82.2k - $187k
Creates testing tools to help engineering teams identify security-related weaknesses. Recognizes and escalates complex security violations to senior team members. Contributes to compliance assessments to identify gaps and ensure compliance with internal and external obligations...SeniorTemporary workFlexible hoursShift work$148.5k - $223.9k
...agentic era? You’re in the right place! Agentforce is the future of AI, and you are the future of Salesforce.Job Title: Senior Offensive Security Engineer, Red TeamThe ExperienceThe Product Red Team focuses on attacking Salesforce's full deployed product ecosystem and...SeniorFull timeRemote work$178.4k - $226.7k
Amazon Optics is building the next generation of physical security software that protects every AWS data center and Amazon corporate facility worldwide. We need a Security Engineer III who will own the security posture of distributed systems that "have to be available...SeniorInternshipWorldwideFlexible hours$118.7k - $206k
...site.AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and... ...dedicated to our customers’ mission.AT&T has an opening for a Senior Information Systems Security Engineer (ISSE) for the TAC2O systems program. This position...SeniorFull timeTemporary workInterim roleWork at officeLocal areaRemote work$174k - $252k
Work closely with internal Security teams, as well as our partner and customer teams.Develop operating system and hardware security features... ...the scope of the broader area.Review code developed by other engineers and provide feedback to ensure best practices (e.g., style...SeniorWorldwide$99k - $225k
Information Security Engineer, SeniorThe Opportunity:Are you looking for an opportunity to share your experience in network security, DNS, IPAM, and security analysis to support an enterprise-level business? As an Information Security Engineer, you can identify the requirements...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$164.3k - $222.3k
Verisign helps enable the security, stability, and resiliency of the internet. We are a trusted provider of internet infrastructure... ...benefits and the ability to grow your career.The Senior Application Security Engineer will play a lead role in securing all software built and...SeniorWork at officeFlexible hours$99k - $225k
Cloud Security Engineer, SeniorThe Opportunity:Everyone is trying to “harness the cloud”, but not everyone knows how to secure it. As a security engineer, you know how to assess and implement requirements that ensure the safety of information systems and protect them against...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$82.3k - $220k
...defense and space exploration to biomedical engineering, lives often depend on the solutions we... ...Summary:Draper is actively seeking a Senior Cyber Effects Engineer that will support... ...innovate for the greater good of our Nation's security. As a part of the Draper Cyber Effects...SeniorFull timeLocal area$145k - $210k
Senior Cyber Security EngineerCooley is seeking a Senior Cyber Security Engineer to join the Security team.Position summary: Cooley Technology embraces a culture of customer service excellence and all members of the department are expected to move this agenda forward....SeniorFull timeTemporary workWork at officeFlexible hoursWeekend work- Senior Information Systems Security Engineer (ISSE) TS/SCI CI PolyDepartment: Government Customer- ChantillyLocation: Chantilly, VASenior ISSEPosition Description:The Senior Information Systems Security Engineer provides support to the customer in the area of Cyber Security...Senior
$164.3k - $222.3k
Verisign helps enable the security, stability, and resiliency of the internet. We are a trusted... ....We have an exciting opportunity for a Senior Information Security Architect. This... ...-domain security challenges, and advise engineering and executive leaders on risk, tradeoffs...SeniorWork at officeFlexible hours- Position Overview:This position will serve as a member of the Exostar Information Security Office and will report to the Manager of Governance & Engineering. This role is responsible for designing and implementing technical security controls across application, cloud,...SeniorFull timeWork at officeFlexible hours
- ...impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced technology organization working in the public...SeniorWork experience placementInternshipLocal areaImmediate start3 days per week
- ...impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced technology organization working in the public...SeniorWork experience placementInternshipLocal areaImmediate start3 days per week
$130k - $180k
OverviewAs a Senior Cloud Security Engineer, you will work with our team and clients to design, implement, and maintain secure cloud environments and architectures. You will support cloud security across the system lifecycle, including security architecture, identity and...Senior- ...overcome the most advanced technical challenges. The team comprises engineers of multiple disciplines including vulnerability research,... ...challenging, meaningful work that is vital to our national security, apply today!Principal Cyber EngineerCyber Offense and Defense...SeniorFull timeRelocationRelocation package
$122k - $253k
...defense, civil, and commercial markets.Senior Principal Cyber EngineerCyber Offense and... ...Defense Experts (CODEX) is seeking a cyber engineer to join our team to solve crucial cyber... ...work that is vital to our national security, apply today!Technical RequirementsTop Secret...SeniorFull timeRelocationRelocation package$113.2k - $237.8k
Job Title: Cyber Reverse Engineer, SeniorJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: Top SecretEmployee... ...Opportunity:Join our unique team solving wide-ranging national security cyber and hardware challenges. Use your skills in interesting...SeniorContract workWork experience placementFlexible hours- ...is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced... ...embedded security.Roles & Responsibilities:Senior engineers in the embedded hardware reverse...SeniorInternshipLocal area
- Capital One seeks a Security Engineer 4 to design and deliver scales of security platforms across cloud and on-prem environments from McLean, VA. You will lead automated controls, implement IAM and data protection systems, and drive security by design across Capital One...Senior
$137.6k - $184k
...buy and easy to use.Key Responsibilities- Lead threat modeling, security design reviews, and architecture reviews for customer... ...Firm, is a team of industry-certified assessors and Compliance Engineers with DevOps and Cloud Infrastructure Architect backgrounds, helping...InternshipWorldwideFlexible hours$131k - $271.6k
...leader for business software and related services. SAP National Security Services Inc.® (SAP NS2®) is an independent U.S. subsidiary of SAP. At SAP NS2, we leverage best-in-breed technologies engineered by SAP to protect the lives, assets and information of Americans....SeniorPermanent employmentFull timeWorldwideFlexible hours$159.3k - $202.4k
Join Amazon's Security organization as a Security Engineer within our Enterprise Protection Program, where you'll be at the forefront of evaluating, investigating, and mitigating active insider risks. With this role, we are specifically looking for someone who is passionate...InternshipFlexible hours$132.8k - $185.1k
...window is expected to close on: 10/31/2026Meet the TeamCisco Security Professional Services provides full life cycle services for Cisco... ...customers through high-value services.Security Consulting Engineers are responsible for providing Security Consulting Services to...Full timeTemporary workLocal areaRemote workWorldwideFlexible hours$98.61k - $167.64k
...contract award. The Work: ICF is looking for an enthusiastic Security Engineer to join our team and help with ensuring our environments and... ...areas of improvement for finding remediation Interact with senior level management, including the ISSO Use security assessment...Full timeContract workWork experience placementWork at officeRemote work- ...operations that drive growth, strengthen governance, and deliver real business impact.About the RoleWe're looking for a hands-on Security Engineer to help protect our platform and strengthen our overall security posture. This is a highly technical, self-directed role for...Work at officeFlexible hours2 days per week3 days per week
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Security Engineer 5503. Be the first to apply!
- information technology security engineer Reston, VA
- aws cloud security engineer Reston, VA
- cloud security engineer Reston, VA
- senior application security engineer Reston, VA
- physical security engineer Reston, VA
- senior security operations engineer Reston, VA
- security infrastructure engineer Reston, VA
- sr security engineer Reston, VA
- security software engineer Reston, VA
- security engineer Reston, VA



