1,000+ matching jobs for “Application Support Engineer | Linux”

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Leidos Holdings

Cybersecurity Engineer SME

Bethesda, Maryland, United States

Pay posted by employer$154,050–$278,475

The Cybersecurity Engineer SME is responsible for protecting the customer’s information systems, networks, and infrastructure from …

Added Nov 3, 2026

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Motorola Solutions

Senior Software Engineer

Los Angeles, California, United States

Full time

… mission of “Keeping Our Heroes Connected”? You will be designing and building data processing pipelines in support of machine learning methods that require access to large RF datasets. Your work will directly impact our …

Added Nov 3, 2026

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Mastercard

Lead PostgreSQL Engineer

O'Fallon, Missouri, United States

Pay posted by employer$122,000–$207,000 USD

… continuous platform improvement. ________________________________________ About the Role The Lead Platform Engineer, Database Engineering is responsible for the strategy, architecture, implementation, lifecycle management, …

Added Oct 27, 2026

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McKesson

Software Engineer

Irving, Texas, United States

Full time

Pay posted by employer$106,100–$176,800

… environments. Evaluate and recommend cloud technologies, automation strategies, and best practices. Support customer-facing technical discussions and complex issue resolution. Establish and promote cloud governance, …

Added Oct 27, 2026

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Booz Allen Hamilton

Riverbed Systems Engineer SME

MacDill AFB, FL

Pay posted by employer$86,800–$198,000

Riverbed Systems Engineer SME The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture …

Added Oct 27, 2026

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Northrop Grumman

Lead Cloud Solutions Engineer

United Kingdom-Cheltenham

… with stakeholders to define scalable, secure infrastructure architectures Administer and optimise Linux and Windows-based systems in enterprise environments Design and troubleshoot IP networking solutions …

Added Nov 3, 2026

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General Mills

Infrastructure Engineer II – Data Platforms

Mumbai, Maharashtra, India

Hybrid
Full time
Regular

… you a database expert who thrives in a fast-paced, multi-platform environment? As a Senior Infrastructure Engineer on our Digital & Technology team, you will lead the migration and modernization of enterprise Oracle …

Added Oct 27, 2026

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Caterpillar

Autonomy Development Engineer

Irving, Texas, United States +1 location

Pay posted by employer$97,530–$158,480

… live. Together, we are building a better world, so we can all enjoy living in it. The Autonomy Development Engineer II develops and delivers production-quality software that enables autonomous and semi-autonomous …

Added Oct 27, 2026

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Northrop Grumman

Principal Network Engineer / Senior Principal Network Engineer

United States-Virginia-Chantilly

Pay posted by employer$103,600–$155,400

… and multi-domain systems and technologies that fuel those missions. By joining in our shared mission, we’ll support yours of expanding your personal network and developing skills, whether you are new to the field, or an …

Added Nov 3, 2026

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Carrier Global

Staff Engineer, Systems Engineering

Bloomington, Minnesota, United States

Pay posted by employer$96,000–$192,000 per year

… ensuring end-to-end code quality. Design, implement, test, and deliver new features for the Android gateway application that runs Smart Building algorithms and connects to the cloud. Develop and integrate embedded platform …

Added Nov 3, 2026

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Rockwell Automation

Site Reliability Engineer

Pune, Maharashtra, India

Full time

As a Site Reliability Engineer for Rockwell Automation, you will: Develop industry-leading commercial software and applications for the …

Added Oct 27, 2026

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General Motors

Senior Software Engineer - Platform

Warren, Michigan, United States +1 location

Hybrid
Full time
Regular

The Role: General Motors is seeking a Senior Software Engineer to support, design, and improve delivery of enterprise applications, integrations, and intelligent platform …

Added Oct 12, 2026

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Kyndryl Holdings

IT4IT Platform Engineer

Hoofddorp, North Holland, The Netherlands

Hybrid

… automatisering, configuratiebeheer en endpoint management. Wat ga je doen? Als IT4IT Platform Engineer ben je verantwoordelijk voor zowel het operationeel beheer als de technische doorontwikkeling van de …

Added Oct 27, 2026

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Kyndryl Holdings

Automation Engineer

Bengaluru, Karnataka, India +1 location

In person

We are seeking a seasoned BCP-DR Application Architecture & Resiliency Specialist to drive end-to-end disaster recovery, data protection, and business …

Added Oct 28, 2026

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Nvidia

Senior Software Solutions Engineer

Pune, Maharashtra, India

We are looking for a Senior Software Solutions Engineer to support NVIDIA AI Enterprise customers and deployments across cloud and datacenter environments. This is …

Added Oct 27, 2026

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Booz Allen Hamilton

DevOps Cloud Engineer

California, MD

Pay posted by employer$77,600–$176,000

DevOps Cloud Engineer The Opportunity: Everyone is trying to “harness the cloud,” but not everyone knows how. As a DevOps …

Added Oct 27, 2026

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RTX

Principal Software Engineer - DevSecOps

San Jose, California, United States

… shape the future of aerospace and defense. Applied Signal Technology (AST) is seeking a Principal Software Engineer with specialization in Development, Security, and Operations (DevSecOps) who strives for excellence and has …

Added Oct 27, 2026

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Arrow Electronics

Field Applications Engineer

Bloomington, Minnesota, United States

Full time
Regular

Pay posted by employer$84,300–$170,500

As a Field Applications Engineer at Arrow Electronics, you will help our customers select and design electronic components and solutions …

Added Oct 27, 2026

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KLA

Division MACH Software Applications Engineer

Hwaseong-si, Gyeonggi-do, South Korea

Full time
Regular

… and Control group (MACH) is looking for the best and brightest research scientists, software engineers, application development engineers and senior product technology process engineers to join our team. The MACH team's …

Added Oct 15, 2026

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Booz Allen Hamilton

Cyber Range Engineer

Schriever AFB, CO

Pay posted by employer$86,800–$198,000

Cyber Range Engineer The Opportunity: As a cyber warfare engineer, you know how critical it is to stay ahead of evolving threats …

Added Oct 27, 2026

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Leidos Holdings

Cybersecurity Engineer SME

Bethesda, Maryland, United States

Pay posted by employer$154,050–$278,475

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Basic Qualifications · employer excerpt

Experience implementing and managing Security Information and Event Management (SIEM) tools such as Splunk or similar platforms. Experience working with endpoint and network security technologies, including IDS/IPS, HBSS/Trellix, and…
Experience reviewing and analyzing cybersecurity event logs to identify indicators of compromise or suspicious activity. Experience supporting incident response plans, vulnerability management programs, risk management plans, and Plans of…
Experience conducting or supporting technical cybersecurity assessments and security audits. Experience identifying system vulnerabilities and instances of non-compliance with cybersecurity standards and regulatory requirements.…
Experience supporting the Risk Management Framework (RMF) authorization process by reviewing security documentation and providing risk-based recommendations to stakeholders regarding system risk posture as part of Authority to Operate…
Experience applying system security engineering principles in areas such as system security design, lifecycle engineering, authentication and authorization mechanisms, cryptography, intrusion detection, contingency planning, incident…

2 more in the full description below.

About this opportunity

Original employer description

Leidos has an exciting opportunity for Cybersecurity Engineer SME in our Intel Security Sector's Analysis Solutions Business Area. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Job Summary

The Cybersecurity Engineer SME is responsible for protecting the customer’s information systems, networks, and infrastructure from cyber threats and vulnerabilities. This role supports the design, implementation, and maintenance of security controls that safeguard mission systems and ensure compliance with applicable cybersecurity policies, standards, and regulatory frameworks. The Cybersecurity Engineer SME will work closely with Information Systems Security Engineers (ISSEs), Information Systems Security Managers (ISSMs), software developers, systems engineers, and government stakeholders throughout the DevSecOps lifecycle. The candidate will perform a full spectrum of cybersecurity engineering activities, including implementing security technologies, supporting incident response efforts, and ensuring systems meet required security and compliance standards.

Primary Responsibilities:

Plan, implement, manage, monitor, and upgrade security controls and tools used to protect enterprise systems and networks, while identifying opportunities to automate repeatable operations tasks.
Design, configure, implement, troubleshoot, and maintain security technologies such as firewalls (security groups), endpoint protection tools (HBSS/Trellix), SIEM platforms (Splunk). Monitor system and network security using Security Information and Event Management (SIEM) tools such as Splunk Enterprise Security to detect, analyze, and respond to potential threats or anomalous activity.
Support the investigation and remediation of cybersecurity incidents, including system or network breaches and malware infections. Participate in change management processes to ensure system changes maintain security compliance and do not introduce new vulnerabilities.
Audit systems and configurations to ensure compliance with established cybersecurity policies, standards, and secure configuration baselines.
Collaborate with engineering, development, and operations teams to integrate security controls into DevSecOps pipelines and system architectures.
Continuously monitor security advisories, bulletins, and industry threat intelligence to stay informed of current vulnerabilities, threats, and trends. Assist with the implementation and enforcement of secure system configurations and cybersecurity compliance requirements.
Support vulnerability management activities by reviewing scan results, assessing risk, and coordinating remediation efforts with system owners and technical teams.

Basic Qualifications:

Experience implementing and managing Security Information and Event Management (SIEM) tools such as Splunk or similar platforms. Experience working with endpoint and network security technologies, including IDS/IPS, HBSS/Trellix, and related defensive security tools.
Experience reviewing and analyzing cybersecurity event logs to identify indicators of compromise or suspicious activity. Experience supporting incident response plans, vulnerability management programs, risk management plans, and Plans of Action and Milestones (POA&Ms).
Experience conducting or supporting technical cybersecurity assessments and security audits. Experience identifying system vulnerabilities and instances of non-compliance with cybersecurity standards and regulatory requirements. Experience collaborating with DevSecOps teams to review vulnerability scan results and support remediation of findings.
Experience supporting the Risk Management Framework (RMF) authorization process by reviewing security documentation and providing risk-based recommendations to stakeholders regarding system risk posture as part of Authority to Operate (ATO) activities. Manage and track Plans of Action and Milestones (POA&Ms) for customer-sponsored systems, coordinating with key stakeholders including ISSOs, ISSEs, ISSMs, and Security Control Assessors (SCAs)
Experience applying system security engineering principles in areas such as system security design, lifecycle engineering, authentication and authorization mechanisms, cryptography, intrusion detection, contingency planning, incident handling, auditing, configuration management, and change control.
Professional cybersecurity certifications such as Security+, CISSP, CySA+, CEH, or GCIH.
Education/Experience: Requires MS degree and 15 or more years of prior relevant experience. Additional years of experience may be substituted in lieu of a degree.

**To be considered must have an active TS/SCI with polygraph security clearance

Preferred Qualifications:

Experience with cybersecurity tools such as Rapid7, Tenable/Nessus, HBSS/Trellix, SonarQube, or endpoint detection and response (EDR) platforms, as well as using STIG viewers and compliance tools to assess systems against established security configuration baselines.
Experience implementing and managing network and application firewalls, incident detection platforms, and digital forensic tools.
Experience with automation tools such as Ansible or CloudFormation to support infrastructure and security automation. Experience with Agile software development environments and scripting/programming languages such as Python or PowerShell. (e.g., React).
Familiarity with cloud computing environments, including AWS, Oracle Cloud, or Google Cloud Platform (GCP).
Experience with system monitoring and health tools such as SolarWinds.
Experience working with DevSecOps pipelines and CI/CD security tools.
Experience administering or securing systems in Linux environments (Red Hat).

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today.

CABARESTON

#ASBA

#HALO

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

April 3, 2026

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 $154,050.00 - $278,475.00

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.

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