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Stackular is seeking a hands-on Principal Software Engineer to provide cross-stack technical leadership on a multi-year cloud-native modernization initiative supporting a federal research client within the National Institutes of Health (NIH). Deep working knowledge of AWS cloud-native services, including EKS/Kubernetes, RDS PostgreSQL, S3, IAM, Secrets Manager, CloudWatch, and VPC networking.

Stackular

Principal Software Engineer

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Notice regarding employment at the Applied Research Laboratory (ARL): Employees must be eligible to obtain a government security clearance, participate in the ARL drug testing program, and comply with electronic and physical monitoring requirements applicable to federal contractors. Preferred Skills/Experience areas include: Prior success collaborating with product owners, researchers, system engineers, and other stakeholders to translate requirements into well-architected technical designs.

YEAR

Pennsylvania State University

R&D Engineer: Software Engineer

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You will support ongoing engagements with product engineering teams by participating in code/design reviews, regular meetings, on-call rotations and incident responses throughout product development and operations cycles, You will develop an understanding of how to safely and reliably manage changes in production by using existing tools and automation to enable product engineering teams to implement changes across a defined range of components or features, with direction from other engineers. Office 365 is at the center of Microsoft's cloud first, devices first strategy as it brings together cloud versions of our most trusted communication and collaboration products like Exchange, SharePoint, and Teams with our cross-platform desktop suites and mobile apps.

DO WHAT YOU LOVE Make your mark on the world’s most used technologies. Develop the next hit mobile application. Pioneer a startup that could be the next big thing. At Microsoft, you choose your path. Headquartered in Redmond, Washington, Microsoft is a top innovator in both the consumer and enterprise technology industry. Just a few of the many things our products do are unleash creativity, connect businesses, and make learning more fun. But our continued success is based on one thing: our employees. We hire amazing, talented people and give them the opportunities—and the tools—to succeed. WHY MICROSOFT? As a Microsoft employee, you’re surrounded by a diverse group of the smartest people in your field. This fosters new ideas, better business results, and creates a dynamic work environment. In the office, you’re constantly challenged and supported by your colleagues. Every day holds something new and exciting. We also offer unparalleled depth and breadth of career opportunities. As an industry leader in multiple fields, working for Microsoft means being able to do whatever you feel passionate about—and being able to make an impact in that field. From day one, we give our employees significant responsibility. This means that you’ll know that you directly contributed to something that has a positive impact on people worldwide. Whether you choose to work in management, dive deep into the newest technology, or explore multiple professions, you’ll find everything you need at Microsoft to drive your career—and to make a difference. WE GET IT – YOU’RE MORE THAN YOUR JOB Everyone works differently and is motivated by different things. We also understand that there’s more to you than your job. That’s why we offer competitive pay and a wide assortment of benefits-- to help you make the most of life at work and away from it. GET THE BALL ROLLING

Microsoft Corp

Site Reliability Engineer - CTJ - Secret

The ideal candidate will have experience developing iOS software, conducting vulnerability research, reverse engineering native binaries, and building custom capabilities in support of offensive cyber operations. In this role, you'll work as part of a highly collaborative engineering team tackling complex technical challenges across iOS platform internals, vulnerability research, exploit development, and reverse engineering.

REDLattice

iOS CNO Software Engineer

The ideal candidate will have experience developing Android software, conducting vulnerability research, reverse engineering native binaries, and building custom capabilities in support of offensive cyber operations. In this role, you'll work as part of a highly collaborative engineering team tackling complex technical challenges across Android platform internals, vulnerability research, exploit development, and reverse engineering.

Android CNO Software Engineer

Leidos Intelligence Group uses a wide range of capabilities in Digital Modernization, Mission Software Systems, and enabling technologies like Artificial Intelligence and Machine Learning to support our customers' mission to defend against evolving threats around the world. This role focuses on delivering and sustaining reliable, secure, and interoperable system capabilities across Windows server infrastructure, domain services, and integrated COTS applications.

SAIC is a premier Fortune 500® technology integrator driving our nation's digital transformation. Our robust portfolio of offerings across the defense, space, civilian, and intelligence markets includes secure high-end solutions in engineering, IT modernization, and mission solutions. Using our expertise and understanding of existing and emerging technologies, we integrate the best components from our own portfolio and our partner ecosystem to deliver innovative, effective, and efficient solutions that are critical to achieving our customers' missions.

We are a team of 26,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.1 billion. For more information, visit saic.com.

Leidos Holdings Inc

Systems Engineer

Contribute to other Enterprise Productivity Solutions workstreams as needed, including Microsoft 365 administration, broader Microsoft platform initiatives, virtual desktop solutions, and other end-user technology platforms, staying versatile across the EPS portfolio while keeping IAM and endpoints as primary focus. Design and maintain Joiner-Mover-Leaver (JML) workflows and Role-Based Access Control (RBAC) frameworks in SailPoint IdentityNow, including role mining, entitlement mapping, provisioning, access certifications, and automated deprovisioning, to enforce least-privilege access and meet regulatory requirements.

The Carlyle Group Employee Co.

Engineer, IAM & Endpoint Platform

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Our talented team is at the forefront of Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management, delivering innovative technical solutions that support critical national security missions. Working within a DevOps framework, successful candidates will contribute to major project deliverables throughout the software development lifecycle, including scope definition and work estimation, architecture and design, coding, and unit testing.

Software Engineer / Senior Software Engineer / TS/SCI Polygraph Required

TSTC is an award-winning, Woman Owned, HUBZone certified Small Business providing services to federal intelligence, law enforcement, civilian and defense agencies. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information.

TSTC

Network Engineer - Must have Secret Clearance

You’ll provide expert‑level support, analysis, research, and engineering for large‑scale cloud, network, and security solutions—all while guiding executive‑level project teams and influencing technical strategy across major DLA initiatives. The Cloud Network Engineer Cloud SME provides senior-level technical expertise, analysis, and research for complex information technology problems and processes supporting the IOEE/IOSEE mission.

<p style="color: rgba(86, 86, 86, 1); font-size: 15px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; line-height: 30px; orphans: 2; outline: 0 none invert; text-align: left; text-decoration: none; text-indent: 0; text-transform: none; vertical-align: baseline; white-space: normal; word-spacing: 0; padding: 0; margin: 0 0 20px; border: 0 none currentColor">DDC is a tribally-owned holding corporation that was established in 2004 to provide viable economic opportunities for the Navajo Nation. Headquartered in Window Rock, AZ, we are committed to preserving our rich culture through a continual focus on core values. Through strategic growth, we have dynamically expanded our family of companies while supporting the Navajo Nation.
<p style="color: rgba(86, 86, 86, 1); font-size: 15px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; line-height: 30px; orphans: 2; outline: 0 none invert; text-align: left; text-decoration: none; text-indent: 0; text-transform: none; vertical-align: baseline; white-space: normal; word-spacing: 0; padding: 0; margin: 0; border: 0 none currentColor">Our subsidiaries provide professional and technical IT and environmental services to a broad portfolio of commercial, tribal, and federal clients.

Diné Development Corporation

Cloud Network Engineer Cloud SME

Experience with Microsoft Windows 2008/2012/2016/2019 Servers; Microsoft Windows 10; administering Microsoft Exchange, Active Directory, and workstation and server hardware; administering Microsoft Office 2010/2016; administering DNS, Group Policy, and PKI; administering vSphere, Horizon View, data backup, and antivirus software; basic networking including DHCP/TCPIP; experience with deploying workstation images; and experience with thin and/or zero clients. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.

Our Mission
Our mission is empowering our nation through a diverse and skilled workforce securely delivering innovative technology, consulting services and digital solutions for our customers’ mission success, every day.

Our Vision
Our vision is Securing the Future as the most trusted partner for U.S. Defense, Intelligence and Federal Civilian customers through the power of One ManTech. When these agencies think of an essential partner for their national and homeland security needs, they think ManTech.

Our Values
Our values are grounded in a bedrock of truth, integrity and caring for each other and the mission. We hold steadfast to:

• TRUST – We earn and protect the trust of our customers, employees and investors through an enduring foundation of respect, fairness, credibility and honoring our commitments, always.

• INCLUSION – We are an inclusive, diverse and talented workforce with a passion for mission success, intellectual capital, creativity and integrity. Our high ethical standards and investment in our people build confidence with our customers.

• QUALITY– We deliver exceptional quality to customers through differentiated technology solutions and an uncompromising focus on excellence, value and innovation.

ManTech International Corp

Network Deployment Engineer

ADAPTED_NOW

The AFNCR IT Services program provides support services for information systems for Headquarters Air Force (HAF), Air Force District of Washington (AFDW), Office of the Secretary of Defense (OSD), Joint Chiefs of Staff, and other Air Force activities within the AFNCR, missions to include the Pentagon, Joint Base Andrews (JBA), Joint Base Anacostia-Bolling (JBAB), and other locations, leased spaces, and alternate sites. Proven experience programming, maintaining, and managing Type-1 inline network encryptors (INE) at network points of presence, including management via GEM-X or adjacent DoD element managers.

KaylaTek

Network Engineer

In this role, you will serve as a trusted security advisor and hands-on technical lead, designing and implementing cutting-edge network and cloud security solutions for civilian, defense, and intelligence community agencies. Position Overview Celestial Innovations Group (CIG) is seeking an experienced Palo Alto Networks Professional Services Consultant to support our growing federal and government client portfolio.

Celestial Innovations Group

Solutions Consultant (Palo Alto Networks)

The Cybersecurity Engineer / Information System Security Engineer (ISSE) will support cybersecurity engineering, security validation, vulnerability scan readiness, and ATO evidence activities for Unattended Ground Sensor (UGS) and operational technology systems. The position will support security reviews for UGS devices and supporting infrastructure, including embedded systems, sensors, cameras, receivers, base stations, network-connected devices, and related management platforms.

Marathon TS, Inc.

Cybersecurity Engineer / ISSE (onsite)

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Qualifications: A deep expertise in one of the following areas and working knowledge of one or more of the other following: Network Detection and Response (NDR), Endpoint Detection and Response (EDR), Next-Generation Firewalls (NGFWs), Intrusion Detection/Prevention Systems (IDS/IPS), F5 platforms, email/web security gateways. 6+ years related technical experience in network/cybersecurity engineering and experience with large-scale enterprise/global networks in a highly diverse environment with an emphasis in DoD capabilities.

Freedom Technology Solutions Group

Cybersecurity Implementation Engineer 717

The ideal candidate will have demonstrated hands-on experience engineering and securing Kubernetes or Red Hat OpenShift clusters, implementing security controls, automating infrastructure deployments, and maintaining reliable containerized environments. Position Description: We are seeking a skilled Platform Engineer specializing in Kubernetes security to design, build, secure, and maintain enterprise container orchestration platforms supporting mission-critical federal government environments.

QED National is a certified Women-Owned Business Enterprise with WBE certification in New York City, New York State, New Jersey and Delaware. A trusted IT advisor to both public and private sector customers, QED National is headquartered in New York City with offices in Albany, NY. Driven by 24 years of industry expertise and guided by strong, ethical practices, QED National helps clients achieve their business objectives by providing innovative IT consulting, reliable staff augmentation and scalable technology solutions that are custom tailored for their needs. Our outstanding service has earned us an extraordinary client retention rate of ninety-five percent.
PRACTICE AREAS
Cyber / Information Security
<ul>
<li>Assessments and consulting</li>
<li>Advanced security technologies and implementation support services</li>
</ul>
IT Management Consulting
<ul>
<li>Data Analytics</li>
<li>Project &amp; Program Management</li>
<li>Enterprise Architecture and Systems Engineering</li>
<li>Governance, Risk &amp; Compliance</li>
<li>IT Strategy</li>
</ul>
IT Staff Augmentation
<ul>
<li>Providing highly qualified, reliable consultants at cost-effective rates, backed by our reputation for integrity &amp; professionalism</li>
</ul>
Technology Solutions
<ul>
<li>A comprehensive portfolio of products and services including, but not limited to RSA, Checkpoint, Information Builders, Commvault, EMC and Schneider Electric/APC</li>
</ul>
QED National is led by a strong management team, under the direction of founder and president,&nbsp;<a href="http://www.youtube.com/watch?v=rpQnrPJFZvg" target="_blank" rel="noopener noreferrer">Colleen Molter</a>.&nbsp; Working with selected organizations,&nbsp;chosen for their outstanding products and support services, QED National delivers expert solutions ranging from IT assessments and governance to intelligent data storage and staff augmentation. It all adds up to comprehensive, customized IT business solutions.
<h2>Esteemed Clients and Sustained Growth</h2>
A New York City and New York State Certified Women-Owned Business Enterprise, QED National is a privately held company in continuous operation since 1993.&nbsp; Recipient of New York City, New York State, Florida, California and Fortune 500 contracts, QED National is proud to have sustained success and growth, including&nbsp;&ldquo;Inc. Magazine&rsquo;s 5000 Fastest Growing Firms in America&rdquo; for&nbsp;nine&nbsp;consecutive&nbsp;years &mdash;2009 through 2017.&nbsp;<a title="Awards" href="http://qednational.com/about/awards">View our full roster of awards</a>.
QED National humbly, yet firmly, acknowledges its reputation among its clients as a partner that responds diligently&mdash;and expeditiously&mdash;to provide the highest quality services. The QED National team ambitiously looks forward to all future opportunities to provide such services.

QED National

Platform Engineer

__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT__PRESENT. Final compensation is determined based on factors including, but not limited to, relevant experience, education, certifications, security clearance level, contract requirements, geographic location, and internal pay equity, and may reflect market data specific to the awarded contract.

Core One

Field Engineer

1+ years of experience designing, deploying, and managing Zscaler Cloud Connector, including deployment within cloud environments (AWS, Azure, and/or GCP), workload-to-internet and workload-to-workload traffic inspection, and integration with cloud-native networking constructs (e.g., VPCs, VNets, Transit Gateways). 5+ years of hands-on experience designing, deploying, and managing Zscaler Private Access (ZPA), including application segment configuration, access policies, connector deployment, and zero trust network access (ZTNA) architectures replacing legacy VPN infrastructure.

Deloitte

Cyber Zscaler Network Security Engineer / Senior Consultant, Strategy, Growth, And Transformation

We are looking for a technically strong, hands-on engineer who is equally comfortable configuring a managed switch, troubleshooting a VLAN, installing and testing copper or fiber infrastructure, installing a sensor in the field, configuring a communications link, or working inside a server rack. Work with single-mode and multimode fiber, SFP/SFP+ transceivers, media converters, fiber patch panels, and associated optical networking equipment.

Constellis Holdings LLC

Field Network Engineer

A SymphonyAI Group company, GW RhythmX leverages various firm assets, including $1B+ in R&D investment, longitudinal data related to 300 million patients, 4.4 billion total annual claims, and 1.8 million healthcare professionals at more than 3,000 facilities globally. The company combines market-leading AI precision care technology with extensive trusted patient engagement leadership to help health systems deliver the right care, at the right time, through the right clinician and channel.

Security Engineer Jobs in Ashburn, VA

Principal Software Engineer Stackular

R&D Engineer: Software Engineer Pennsylvania State University

Site Reliability Engineer - CTJ - Secret Microsoft Corp

iOS CNO Software Engineer REDLattice

Android CNO Software Engineer REDLattice

Systems Engineer Leidos Holdings Inc

Engineer, IAM & Endpoint Platform The Carlyle Group Employee Co.

Software Engineer / Senior Software Engineer / TS/SCI Polygraph Required Leidos Holdings Inc

Network Engineer - Must have Secret Clearance TSTC

Cloud Network Engineer Cloud SME Diné Development Corporation

Network Deployment Engineer ManTech International Corp

Network Engineer KaylaTek

Solutions Consultant (Palo Alto Networks) Celestial Innovations Group

Cybersecurity Engineer / ISSE (onsite) Marathon TS, Inc.

Cybersecurity Implementation Engineer 717 Freedom Technology Solutions Group

Platform Engineer QED National

Field Engineer Core One

Cyber Zscaler Network Security Engineer / Senior Consultant, Strategy, Growth, And Transformation Deloitte

Field Network Engineer Constellis Holdings LLC

Network Engineer GetWellNetwork Inc

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