Jobs in the United States

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Added 4 mins ago
Senior Software Engineer (Agentic SW Development and Infrastructure)
Lockheed Martin
Manassas, VA · Manassas
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Software Engineer - E2
Lockheed Martin
Fort Worth, TX · Fort Worth
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Software Engineer Sr - E3
Lockheed Martin
Fort Worth, TX · Fort Worth
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Software Engineer Sr - E3
Lockheed Martin
Fort Worth, TX · Fort Worth
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Software Engineer - E2
Lockheed Martin
Fort Worth, TX · Fort Worth
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Cyber Systems Security Engineering
Lockheed Martin
Orlando, FL · Orlando
As a Cyber Systems Security Engineer, you will play a vital role in securing the backbone of mission-critical systems. Your responsibilities will include:
Added 5 mins ago
Loads and Dynamics Lead Engineer
Lockheed Martin
King of Prussia, PA · King of Prussia
…meetings with customers, DOE partners, and program management. Operating with broad discretion, you will influence long‑range plans and development strategies, guide major program…
Added 5 mins ago
Software Engineer Sr - E3
Lockheed Martin
Longmont, CO · Longmont
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Systems Integration/Test Engineer Sr - E3 (Weekend)
Lockheed Martin
Littleton, CO · Littleton
The Test Engineer will be responsible for end‑to‑end support of high‑power electrical testing and environmental testing (thermal and thermal‑vacuum) of RF and antenna related sub‑assemblies…
Added 5 mins ago
Software Engineer Intern - Summer 2027
Lockheed Martin
King of Prussia, PA · King of Prussia
…integration of COTS/FOSS and the ability to navigate multiple operating systems to include LINUX/Windows. The applicant must be a…
Added 5 mins ago
Software Engineer Stf - PLM / Windchill - E4
Lockheed Martin
Remote, United States
This position is for a software engineer working in MFC’s Windchill Product Lifecycle Management (PLM) system as well as other connected systems/applications. This role will focus on…
Added 5 mins ago
Software Engineer - Software Test
Lockheed Martin
Fort Worth, TX · Fort Worth
As a Senior Software Test Engineer supporting the Sensor Fusion team, you'll help validate the software that enables advanced aerospace systems to process, fuse, and deliver critical…
Added 5 mins ago
Sr HWIL Test Engineer
Lockheed Martin
Grand Prairie, TX · Grand Prairie
…business areas. We are growing and seeking to hire a HWIL Test Engineer for our Grand Prairie, TX…
Added 5 mins ago
Staff Networking Engineer
Lockheed Martin
Colorado Springs, CO · Colorado Springs
The Network Communications Engineer will design, configure, secure, monitor, and troubleshoot complex, high-performance communication networks supporting mission-critical systems.
Added 5 mins ago
Software Engineer Sr Stf
Lockheed Martin
Fort Worth, TX · Fort Worth
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 5 mins ago
Software Engineer - E2
Lockheed Martin
Palmdale, CA · Palmdale
This position is for a Software Engineer within the historic Skunk Works Organization. The team is a diverse set of hardware and software engineers working to design, develop, prototype,…
Added 5 mins ago
Information Systems Security Officer (ISSO)
Lockheed Martin
Fort Worth, TX · Fort Worth
…periodic assessments. Implements and tests state-of-the-art secure operating systems, networks, and database solutions. Stays current with system vulnerabilities and provides current…
Added 6 mins ago
Software Engineer - E2
Lockheed Martin
Longmont, CO · Longmont
…users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of…
Added 6 mins ago
Software Engineer Asc - Early Career
Lockheed Martin
Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a Full Time Software Engineer - Early Career. In this role, you will participate in all phases of the System Software lifecycle from supporting…
Added 6 mins ago
Software Engineer Asc - Early Career
Lockheed Martin
Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a Full Time Software Engineer - Early Career. In this role, you will participate in all phases of the System Software lifecycle from supporting…
Added 6 mins ago
Software Engineer Asc - Early Career
Lockheed Martin
Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a Full Time Software Engineer - Early Career. In this role, you will participate in all phases of the System Software lifecycle from supporting…
Added 6 mins ago
Software Engineer Asc - Early Career
Lockheed Martin
Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a Full Time Software Engineer - Early Career. In this role, you will participate in all phases of the System Software lifecycle from supporting…
Added 6 mins ago
Software Engineer Asc - Early Career
Lockheed Martin
Fort Worth, TX · Fort Worth
Lockheed Martin Aeronautics is seeking a Full Time Software Engineer - Early Career. In this role, you will participate in all phases of the System Software lifecycle from supporting…
Added 8 mins ago
Senior Embedded Software Engineer
Glydways
Remote, United States
…by standardized autonomous vehicles on dedicated roadways. Operating 24/7 with on-demand access, it offers personalized and efficient mobility - without the burden of heavy upfront…
Added 8 mins ago
D
Sr. Engineer, Core
Doppler
Remote, United States
- $180,000 to $200,000 USD / year
As a Senior Engineer, you’ll help build the next phase of scale for a platform that 78,000+ teams trust with their most sensitive data, using industry-leading techniques, and you’ll blaze…

Zscaler

Principal Software Development Engineer (Layer 7 Security & Proxy)

Santa Clara, CA, United States

$212,000 - $265,000 USD

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Job details

Pay: $212,000 - $265,000 USD
Posting language: English
Posted: Oct 29, 2026

Original job description

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform.

We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler.

Role

We are looking for an Principal Software Development Engineer (Layer 7 Security & Proxy) to join our team. This is a hybrid role (minimum 3 days a week in Santa Clara, CA office), reporting to the Director, Software Development Engineering in the Zero Trust Exchange department. This architect role is essential to provide technical leadership for the ZIA proxy architecture, with a strong focus on advanced Layer 7 protocols and SSL inspection. You will help improve the quality of code shipped to production by driving sound architectural decisions, implementing innovative solutions, and raising the overall engineering bar for the team. Additionally, you will play a key role in modernizing the ZIA code base by addressing technical debt, fixing existing issues, and rewriting components where necessary. Ultimately, this role is critical for supporting and accelerating the delivery of key proxy roadmap features on a strong and scalable foundation.

What You’ll Do (Role Expectations)

Support end-to-end QUIC/HTTP/3 and HTTP/2 proxy and TLS/SSL architecture in ZIA
Define and evolve ZIA proxy architecture
Partner with Product Management and engineering on solution design, trade-offs, and end-to-end delivery of core ZIA functionality
Establish reference architectures and design patterns for ZIA components and integrations
Provide technical leadership, mentoring, and architectural governance across virtual and product teams

Who You Are (Success Profile)

You thrive in ambiguity, comfortably building the path as you walk it and viewing dynamic environments as the raw material to create something meaningful.
You are customer-obsessed, building deep empathy for both internal and external users while anchoring your decisions in solving real-world problems.
You are driven by innovation, bringing deep curiosity to complex technical challenges and constantly seeking better, more secure, and scalable solutions.
You think at scale, connecting your daily work to the larger mission to build solutions that support a high-growth, global organization.
You lead with integrity by holding yourself and others to high standards of accountability and building trust through consistent, transparent action.

What We’re Looking for (Minimum Qualifications)

Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain
12 + years of experience of total experience and proven experience in designing and implementing networking security software and public clouds infrastructure
Deep understanding of Proxies, HTTP/2, QUIC, TCP/IP, TLS/DTLS and SSL proxies
Proficient in C language
Demonstrated success in designing, optimizing, and troubleshooting high-throughput, low-latency network security products
Bachelor’s degree in Computer Science, Information Technology, or related field

What Will Make You Stand Out (Preferred Qualifications)

Proven ability to leverage AI technologies and workflows to drive measurable operational efficiency
Mastery of TCP/IP, DNS, Http(s), VPN technologies (IPSec, SSL VPN), NAT, and load balancing
Knowledge of BSD/Linux operating systems, virtualization technologies, and DPDK or similar kernel bypass techniques

Zscaler’s salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training.

The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits.

Base Pay Range

$212,000 - $265,000 USD

At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans
Time off plans for vacation and sick time
Parental leave options
Retirement options
Education reimbursement
In-office perks, and more!

Learn more about Zscaler's hybrid working model and benefits here.

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines.

Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link.

Pay Transparency

Zscaler complies with all applicable federal, state, and local pay transparency rules.

Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

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More about this job

Skills

Software development
Leadership
Coaching
ML
C
Troubleshooting
Computer science
Computer technology
DNS
VPN
Linux

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