linux / unix systems administrator Jobs in california

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Network Infrastructure Engineer (Senior)

Leidos

Remote

Full-time

Leidos is seeking a Sr. Network Management Engineer (Infrastructure Engineer) to join our AGUN migration team. PROGRAM SUMMARY: The AGUN program is a highly demanding mission and requires expert technical and professional management to support the Army's global wide area network and security infrastructure. You will be supporting a large and complex network migration and operations for the US Army. This role is remote and will include leadership of operations support staff and directing operati

Senior Full Stack Developer Lead - Inventory Management - JERSEY CITY

Citi

Remote or Jersey City, New Jersey, USA

Full-time

As part of the Inventory Management Applications Suite, Senior Application Developer is responsible for leading very high volume / low latency enterprise multi-tiered Java applications to provide cutting edge solutions for the Stock Record and related Application in the Capital Markets domain while following the industry best practices and Citi standards. The primary responsibility will be leading the design and development and providing Level 3 support for these applications. Coordination betwe

Infrastructure Engineer

Vaco by Highspring

Chino, California, USA

Contract

Vaco in partnership with a Leading Manufacturing company is searching for an Infrastructure Engineer. This is a long term contract position Position: Infrastructure Engineer Location: Los Angeles / Inland Empire, CA 91710 Term: Contract Work location: Hybrid Key Responsibilities: Architect and maintain technical infrastructure across hardware, networking, and software layers Lead WAN, LAN, and wireless network design and implementation Direct the architecture of storage and backup systems Over

System and Database Administrator

Robert Half

Novato, California, USA

Full-time

Description Immediate opening for a Linux System and Database Administrator to join a growing an online retailer that designs, manufactures and sells affordable products directly to consumers. They have a global team so this individual will work with teams in the US market and China to install, configure, upgrade, and maintain both on-premise and cloud-based databases, ensuring performance, and data consistency. This is a full-time opportunity, working a hybrid schedule. The position offers bon

Data Scientist Job Family - Generative AI, Machine Learning, Python, R - Remote

Molina Healthcare

Remote or Long Beach, California, USA

Full-time

Job Description Job Description Job Summary Responsible for overseeing data science projects, managing and mentoring a team, and aligning data initiatives with business goals. Lead the development and implementation of data models, collaborate with cross-functional teams, and stay updated on industry trends. Ensure ethical data use and communicate complex technical concepts to non-technical stakeholders. Lead initiatives on model governance and model ops to align with regulatory and security

Applications Development Technical Lead Analyst

Citi

Remote or Tampa, Florida, USA

Full-time

Citibank, N.A. seeks an Applications Development Technical Lead Analyst for its Tampa, FL location. Duties: Provide continuous support from a Development Operations lens for business applications including external client and internal client-based OTC Margin Calculations, MERIT, Netting Engine, and Quattro. Ensure all mission critical applications are stable for internal and external Citi clients. Communicate with team members and alleviate any time-difference issues, including all development

Senior Site Reliability Engineer

Salesforce

San Francisco, California, USA

Full-time

To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category Software Engineering Job Details About Salesforce We're Salesforce, the Customer Company, inspiring the future of business with AI+ Data +CRM. Leading with our core values, we help companies across every industry blaze new trails and connect with customers in a whole new way. And, we empower you to be a Trailblazer, too - driving you

Senior/Lead DevOps Engineer

Salesforce

San Francisco, California, USA

Full-time

To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category Software Engineering Job Details About Salesforce We're Salesforce, the Customer Company, inspiring the future of business with AI+ Data +CRM. Leading with our core values, we help companies across every industry blaze new trails and connect with customers in a whole new way. And, we empower you to be a Trailblazer, too - driving you

DFIR Restoration and Recovery System Administrator

Booz Allen Hamilton

Remote

Full-time

Job Number: R0222254 DFIR Restoration and Recovery System Administrator The Opportunity: Your combination of people skills and technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting Digital Forensics and Incident Response ( DFIR ) ? We're looking for a systems administrator to be one of the first resp ond ers helping organizations navigate through the investigation and recovery asso cia ted with a c

Manager, Software Engineering Management

ServiceNow, Inc.

San Diego, California, USA

Full-time

Company Description It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today - ServiceNow stands as a global market leader, bringing innovative AI-enhanced technology to over 8,100 customers, including 85% of the Fortune 500 . Our intelligent cloud-based platform seamlessly connects people, systems, and processes to empower organizations to find smarter, faster, and better ways to work. But thi

Senior Software Engineer - Simulation and Virtualization

NVIDIA Corporation

Remote or Santa Clara, California, USA

Full-time

NVIDIA data center systems, such as DGX and HGX, have become core to NVIDIA's rapidly growing enterprise and cloud provider businesses. These platforms bring together the full power of NVIDIA GPUs, NVIDIA NVLink, NVIDIA InfiniBand networking, NVIDIA Grace CPUs, and a fully optimized NVIDIA AI and HPC software stack. We are hiring Sr. Software Engineer who will help build simulators for our DGX Server platforms. Simulations play a significant role in building scalable systems at Speed of Light! Y

Senior II Site Reliability Engineer

Akamai Technologies

Cambridge, England, United Kingdom

Full-time

Do you like collaborating across teams to solve complex problems? Do you have a passion for cutting edge technologies and tackling system problems? Join our highly-skilled Site Reliability team! Our team designs, develops, and manages applications and infrastructure that support Akamai's Compute products and services. We create solutions that manage our Compute platform, focusing on cloud interfaces - Compute Portals and APIs. We do this while maintaining Akamai's mission to make life better

Engineering Manager, Ads Creative & Ecosystem

TikTok

San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A44086 Apply to this job Share this listing: Responsibilities A "creative" is the ad (in the form of a short-form video) served to TikTok users, composed of video, background music, call-to-action card, post-click landing page, and other formats that get delivered to users. A quote goes "creativity is the soul of advertising", because a good ad creative is effective, yet difficult to produce, especially at the scale of TikTok advert

Software Engineer 4 - BS1013034

Juniper Networks

Sunnyvale, California, USA

Full-time

At Juniper, we believe the network is the single greatest vehicle for knowledge, understanding, and human advancement the world has ever known. To achieve real outcomes, we know that experience is the most important requirement for networking teams and the people they serve. Delivering an experience-first, AI-Native Network pivots on the creativity and commitment of our people. It requires a consistent and committed practice, something we call the Juniper Way. Software Engineer 4 Location: Sun

Senior Staff, Software Engineer - BS1013033

Juniper Networks

Sunnyvale, California, USA

Full-time

At Juniper, we believe the network is the single greatest vehicle for knowledge, understanding, and human advancement the world has ever known. To achieve real outcomes, we know that experience is the most important requirement for networking teams and the people they serve. Delivering an experience-first, AI-Native Network pivots on the creativity and commitment of our people. It requires a consistent and committed practice, something we call the Juniper Way. Senior Staff, Software Engineer L

Cyber Incident Response Analyst III

Nightwing

Remote or Sterling, Virginia, USA

Full-time

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in th

Software Engineer (C++, OOD/OOP, Linux)

KLA

Milpitas, California, USA

Full-time

Company Overview KLA is a global leader in diversified electronics for the semiconductor manufacturing ecosystem. Virtually every electronic device in the world is produced using our technologies. No laptop, smartphone, wearable device, voice-controlled gadget, flexible screen, VR device or smart car would have made it into your hands without us. KLA invents systems and solutions for the manufacturing of wafers and reticles, integrated circuits, packaging, printed circuit boards and flat panel d

HVR Application Administrator

RTX Corporation

Arizona, USA

Full-time

Date Posted: 2025-06-10 Country: United States of America Location: RAZ99: RTN Remote, Arizona Position Role Type: Remote U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs

Splunk Consulting Engineer

Kforce Technology Staffing

Milpitas, California, USA

Contract

RESPONSIBILITIES: Kforce is immediately seeking an experience Splunk Consulting Engineer in support of our enterprise networking and cloud solutions client in Milpitas, CA. Project requirements: * Splunk Consulting Engineer will assist in migration of the security/observability logging solution in Webex Contact Center Enterprise (WxCCE) production environment from Exabeam to Splunk Cloud Enterprise Security Secure Information Event Management (SIEM) system * Lead and/or assist with deployment o

Cloud Solutions Architectwith GitLab Experience

ADDSOURCE

San Jose, California, USA

Third Party

Job Title: Cloud Solutions Architect with GitLab Experience Location: San Jose, CA (onsite from day 1) Long term Contract Job Summary: We are seeking a highly experienced and certified Cloud Solutions Architect / DevOps Architect with over 25 years of experience in designing, implementing, and managing cloud infrastructure across AWS, Azure, and Google Cloud Platform, including specialized environments such as AWS GovCloud. The ideal candidate will have strong expertise in DevOps practices, Inf