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Added 1 min ago
Systems Engineer-IT Stf - E4
Lockheed Martin
Grand Prairie, TX · Grand Prairie
The Classified IT Infrastructure team within Lockheed Martin MFC is seeking a talented and dedicated Systems Engineer-IT Stf to support information systems administration and related…
Added 1 min ago
Electronics Engineer - E2
Lockheed Martin
Owego, NY · Owego
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Software Engineer, Systems ML
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Senior II Site Reliability Engineer
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Indianapolis, IN
- $146,400 to $263,600 USD / year
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Added 8 mins ago
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Senior II Site Reliability Engineer
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Indianapolis, IN
- $78.49 USD / hour
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Added 9 mins ago
Software Engineer - E2
Lockheed Martin
Sunnyvale, CA · Huntsville, AL · Littleton, CO · Sunnyvale · Huntsville · Littleton
…throughout the development life cycle. Applies knowledge of computer hardware and software, subject matter to be programmed in business/mission applications, information processing…
Added 9 mins ago
Software Engineer Sr - E3
Lockheed Martin
Boulder, CO · Longmont, CO · Boulder · Longmont
…throughout the development life cycle. Applies knowledge of computer hardware and software, subject matter to be programmed in business/mission applications, information processing…
Added 9 mins ago
Software Engineer Sr Stf - E5
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Huntsville, AL · Huntsville
The Lockheed Next Generation Interceptor (NGI) team is seeking an experienced Software/Hardware Integrator to be part of a team developing defense technology that could forever change our…
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Systems Integration/Test Engineer
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Have sound organization and troubleshooting skills and understand hardware/software design, requirements generation, product development, test execution, and verification activities
Added 9 mins ago
Member Engineering Stf Lead
Lockheed Martin
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Experience as an Integrated Product Team Leader or Lead Hardware Engineer
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Electrical Engineer, Design - E2
Lockheed Martin
Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a full-time experienced professional Electrical Engineer (Hardware Design). For this position the engineer to help design IFG Hardware (HW) Simulation…
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Dev Sec Engineering - Early Career
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Lockheed Martin Space is seeking a full-time Early Career Dev Sec Engineer. In this role, you will be assigned to a scrum team within the development organization supporting numerous…
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Sr Member Engineering Stf
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Sr Member Engineering Stf supports the development of radar processor applications for deployment on real-time hardware. The engineer will design and document radar processing…
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Systems Integration/Test Engineer Staff
Lockheed Martin
Littleton, CO · Littleton
…functional and technical specifications and standards, solves hardware/software interface problems, defines input/output parameters, and ensures integration of the entire system or…
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Mechanical Engineer, Design Sr - E3
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Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a full-time experienced professional Mechanical Engineer Sr (Hardware Design). For this position the candidate will be responsible for the mechanical…
Added 9 mins ago
Software Engineer Sr - Clearance Required
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The selected Principal Test Engineer responsibilities will include the support of the GWS-GFC IPT. You will design, develop, test, and maintain software applications and components to meet…
Added 9 mins ago
Systems Engineer Staff - Clearance Required
Lockheed Martin
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This role is for a Systems Engineer to support the Ground Based Mid-course Defense (GMD) Weapon System (GWS) program. In this role the candidate will perform Systems Engineering functions…

Closed listing

Proofpoint

Senior Site Reliability Engineer

Baltimore, MD, United States

This opening has closed.

The original listing is kept below for reference.

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About employer

Job details

Experience: Demonstrable skills and 7+ years’ experience in troubleshooting, and tuning in systems, networking, and cloud
Posting language: English
Posted: Sep 12, 2026

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Original job description

Archived listing. The details below describe a past opening.

Boston, Massachusetts

Florida

Texas

Utah

Illinois

Virginia

Draper, UT

Maryland

Georgia

Full time

R14687

About Us:

Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple: safeguard the digital world and empower people to work securely and confidently. Join us in our pursuit to defend data and protect people.

How We Work:

At Proofpoint you’ll be part of a global team that breaks barriers to redefine cybersecurity guided by our BRAVE core values:

Bold in how we dream and innovate

Responsive to feedback, challenges and opportunities

Accountable for results and best in class outcomes

Visionary in future focused problem-solving

Exceptional in execution and impact

The Role

As a Senior Site Reliability Engineer at Proofpoint you will develop a deep understanding of the various services

and applications that come together to deliver Proofpoint’s next generation security products. You will contribute to

the architecture to improve scalability, operability, service reliability, capacity, and performance. You will be

responsible for provisioning, maintaining, and scaling our production services within server farms across multiple,

world-wide data centers as well as AWS.

We are looking for passion, curiosity, attention to details, taking pride in one’s work, taking ownership, and having

ideas and opinions. If you’re an enthusiastic team player who cares about the infrastructure, remains calm in crisis,

collaborates cross functionally, loves automation, then we want to talk to you.

Your day-to-day

Build long lasting, effective partnerships across the organization to foster collaboration between Product,

Engineering and Operations teams.

Participate in a 24x7, multi-site production infrastructure powering the Proofpoint services, including

deployment, maintenance, troubleshooting, performance tuning, and security.

Root-cause complex problems and involve multiple stakeholders, network, hardware and software that relate to

scaling and performance.

Ensure proper monitoring, alerting, capacity planning and reporting in the production environment.
Contribute to the evolving design and architecture of reliable and scalable infrastructure.
First line of defense during working hours should any alerts or incidents arise.
Collaborate with product engineering teams to ensure Operations standards are observed, determine resource

impacts for upcoming product deployments, and ensure successful product rollouts.

Participate in an on-call rotation and be willing to jump on escalated issues as needed.

What you bring to the team

Demonstrable skills and 7+ years’ experience in troubleshooting, and tuning in systems, networking, and cloud

services.

A friendly and collaborative demeanor, working well with cross functional teams.
Experience with Infrastructure-as-Code using Terraform, Ansible, Cloudformation, etc.
Experience automating management and operational tasks using Node.Js, Python, or scripting languages.
Experience with industry-standard foundation technologies such as TCP/IP, HTTP, DNS, and LDAP.
Experience in management of a large distributed computing environment.
Experience in management of cloud infrastructure.
Experience with virtualization – KVM, VMware vSphere, and OpenStack
Excellent verbal and written communication skills.
Experience with monitoring and alerting systems.
Experience with industry-standard operational practices such as change management, incident management, and

working in colocation datacenters.

Experience with public cloud providers such as Amazon EC2 or Microsoft Azure.
BS or MS in Computer Science, Engineering or related technical discipline, or equivalent experience required.
US citizenship required

Why Proofpoint?

At Proofpoint, we believe that an exceptional career experience includes a comprehensive compensation and benefits package. Here are just a few reasons you’ll love working with us:

Competitive compensation
Comprehensive benefits
Career success on your terms
Flexible work environment
Annual wellness and community outreach days
Always on recognition for your contributions
Global collaboration and networking opportunities

Our Culture:

Our culture is rooted in values that inspire belonging, empower purpose and drive success-every day, for everyone.

We encourage applications from individuals of all backgrounds, experiences, and perspectives. If you need accommodation during the application or interview process, please reach out to accessibility@proofpoint.com .

How to Apply

Interested? Submit your application along with any supporting information- we can’t wait to hear from you!

Consistent with Proofpoint values and applicable law, we provide the following information to promote pay transparency and equity. Our compensation reflects the cost of labor across several U.S. geographic markets, and we pay differently based on those defined markets as set out below. Pay within these ranges varies and depends on job-related knowledge, skills, and experience. The actual offer will be based on the individual candidate. The range provided may represent a candidate range and may not reflect the full range for an individual tenured employee. This role may be eligible for variable compensation and/or equity. We offer a competitive benefits package, including flexible time off, a comprehensive well-being program with two paid Wellbeing Days and two paid Volunteer Days per year, plus a three-week Work from Anywhere option.

Base Pay Ranges:

SF Bay Area, New York City Metro Area:

Base Pay Range: 136,200.00 - 214,005.00 USD

California (excludes SF Bay Area), Colorado, Connecticut, Illinois, Washington DC Metro, Maryland, Massachusetts, New Jersey, Texas, Washington, Virginia, and Alaska:

Base Pay Range: 112,700.00 - 177,100.00 USD

All other cities and states excluding those listed above:

Base Pay Range: 101,600.00 - 159,720.00 USD

Proofpoint has been honored with six Best Places to Work Awards in 2024 by workplace culture leader Comparably, including Best Company Career Growth, Best Company Outlook, Best Global Culture, Best Engineering Teams, Best Sales Teams, and Best HR Teams.

We are the leader in human-centric cybersecurity. Half a million customers, including 87 of the Fortune 100, rely on Proofpoint to protect their organizations. We’re driven by a mission to stay ahead of bad actors and safeguard the digital world. Join us in our pursuit to defend data and protect people.

Our BRAVE Values:

At Proofpoint, we are BRAVE in everything we do, and our values aren’t just words - they shape how we work, collaborate, and grow.

We seek people who are bold enough to challenge the status quo, responsive in the face of ever-evolving threats, and accountable for delivering real impact.

We value those with a visionary mindset who anticipate what’s next and push cybersecurity forward, and we celebrate exceptional execution that ensures we continue to defend data and protect people.

Proofpoint is an equal opportunity employer, we hire without consideration to race, religion, creed, color, national origin, age, gender, sexual orientation, marital status, veteran status or disability.

Find your network, your allies, and your biggest fans. We know that work is simply better when you’re surrounded by people who inspire you - who share ideas, cheer you on, and genuinely want to see you succeed. That’s why we offer social circles, sponsored networks, and connection points across teams and time zones - to help you find your people, build your community, and thrive together.

This isn’t just a job - it’s a mission to protect people and defend data in a world that never slows down. We’re building the future of human-centric cybersecurity, and that future belongs to all of us. We take ownership, move fast, and hold ourselves accountable - because that’s what it takes to stay ahead. And we do it together, winning as one.

Be empowered to reach your full potential through meaningful challenges and personalized support - designed around you and your goals. Whether you're growing as a leader or leveling up from great to exceptional as an individual contributor, we’re here to help you get there.

About employer

More about this job

Skills

AWS
Collaboration
Troubleshooting
Reporting
Infrastructure as code
IBM Terraform
Ansible
Node.js
Python
DNS
LDAP
Distributed computing
VMware
OpenStack
Communication skills
Change management
Microsoft Azure
Computer science
Compensation and benefits
Community engagement

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