unix jobs in San Diego

Principal-level network engineer responsible for data analysis, troubleshooting, and technical leadership across networking and application performance issues. Drives network security standards, capacity planning, and disaster recovery initiatives while mentoring junior engineers and collaborating on cross-functional projects.…See more Requires 8+ years of networking experience with deep expertise in network design, protocols, performance tuning, and modern networking technologies.

The Cyber Security Analyst develops and maintains assessment documentation, performs ongoing compliance assessments using tools like ACAS, SCAP, and Trellix, and conducts security audits and Site Based Security Assessments (SBSAs) of NCS Family of Systems. The role requires 5–8 years of cybersecurity experience, current DoD 8140-compliant IAT II certification (Security+ with appropriate CE/OS), and expertise in Risk Management Framework (RMF) v3/v5, System Security Plans (SSPs), POA&Ms, STIG remediation, and eMASS.…See more Responsibilities include patching verification, configuration and change management compliance, incident reporting, continuous monitoring, and potential appointment as Information System Security Officer (ISSO) within 6 months.

Principle Network Support Engineer providing onsite technical support to DoD/Federal customers, troubleshooting complex network and product issues across multi-tiered systems. Responsibilities include working with support and development teams to resolve issues, utilizing NETSCOUT's Knowledge Management database, and advising customers on network management best practices.…See more Requires minimum 5 years in network management supporting external customers, CompTIA Security+ or higher (CISSP required), CCNA/CCNP Cisco certification, and hands-on Linux and Windows/Unix knowledge.

Develop, design, and execute tests for wireless features on macOS and Apple products, with focus on 802.11 MAC/PHY protocol validation. Maintain calibrated test beds, develop test plans and documentation, identify and isolate bugs using debugging tools, and automate test cases.…See more Requires 3+ years of wireless technology test engineering experience, deep knowledge of 802.11 and TCP/IP protocols, scripting proficiency, and hands-on use of network analysis tools.

MaXentric seeks an embedded software engineer to develop and optimize software for custom processor architectures supporting defense and commercial applications. The role involves low-level programming, system design, performance tuning, and collaboration with hardware teams to transition research prototypes into production DoD systems.…See more Candidates will work across the full stack from embedded systems to application-level software, with emphasis on security, software-defined networking, and software-defined radio in highly constrained environments.

This Systems Engineer role manages server and systems infrastructure for a healthcare organization, with responsibility for Windows, Linux, Unix, and other operating systems across all environments. The position involves hardware implementation, OS configuration, data center operations, and day-to-day system integrity while maintaining service-level standards.…See more Key responsibilities include server provisioning, installation, documentation, performance monitoring, and recommending infrastructure tools and platform configurations. The role requires 4+ years of system administration experience and strong expertise in server hardware, multiple operating systems, and infrastructure components.

Principal Computer Systems Analyst supporting classified government contracts, responsible for managing multi-user computer systems including Windows Server administration, Active Directory, Group Policy, and domain architecture design. The role involves system maintenance, patching, monitoring, compliance enforcement, backup/recovery services, and coordination across IT/Cyber teams.…See more Requires current Top Secret clearance, Security+ certification, and 3–9 years of experience depending on educational background.

Business Systems Analyst III responsible for software release management of designated applications, with potential to mentor junior analysts. The role requires strong client-facing skills, requirements gathering, and the ability to translate technical concepts for non-technical audiences.…See more Key technical competencies include SQL, Oracle database experience, relational database concepts, Agile/Waterfall methodologies, and tools like Microsoft Visio and Project. The position demands collaboration across project teams, prioritization under changing deadlines, and familiarity with PBM business models and pharmaceutical practices.

Software Engineer supporting Navy base projects in San Diego, developing cross-platform applications for Linux and Android using C++, C, Python, Qt, and SQLite. Responsibilities include UI/UX development for embedded and mobile applications, API design and integration, secure software development practices, CI/CD implementation, and participation in Agile Scrum teams.…See more Must have proven experience in Linux/Android development, proficiency in C++/C/Python, Qt and Android platforms, test automation, containerization (Docker/Kubernetes), and formal API methodologies.

Principal-level Business Intelligence Architect responsible for designing and leading enterprise data architecture, ETL pipelines, and reporting infrastructure for a healthcare organization. The role requires 8+ years of BI/data management experience with at least 4 years leading individual contributors and managers, deep expertise in SQL, relational and NoSQL databases, and cloud/streaming data architectures.…See more You will mentor technical teams, communicate complex data solutions to executive stakeholders, ensure HIPAA compliance, and drive innovation in data strategy across a matrix organization.

ManTech seeks an Information System Security Officer to maintain Assessment & Authorization (A&A) documentation per NIST and DoD standards, track compliance deficiencies via Plans of Action and Milestones, implement continuous monitoring strategies, and oversee audit log systems and patch management. The role requires managing security tools, evaluating system configuration changes, and supporting an Information System Security Manager (ISSM) with compliance and incident response procedures.…See more Candidates must hold Security+ certification, have 2+ years of RMF and NIST SP 800-53 experience, and possess an active Top Secret clearance with SCI eligibility.

Senior Staff Software Engineer leading a small team to develop end-to-end solutions across the Android stack and Linux kernel, working on both user space and kernel space components. The role requires deep expertise in operating systems, Android frameworks, and Linux kernel programming, with collaboration across systems, multimedia, and architecture teams.…See more Candidates must have 6+ years of software engineering experience (or equivalent with advanced degree) and 3+ years hands-on programming in C, C++, Java, or Python, with preferred experience in Android Application Framework, kernel drivers, debugging tools, and system-level programming.

DevSecOps Engineer supporting a U.S. Air Force cloud migration program.…See more Responsibilities include designing secure on-premises infrastructure, building and managing CI/CD pipelines, automating provisioning and monitoring, implementing security controls, and troubleshooting infrastructure incidents. Requires active TS/SCI clearance, 5–8+ years of DevSecOps/software engineering experience, IAT II certification, hands-on expertise with Kubernetes, Docker, GitLab, AWS, Linux/Unix, and monitoring tools (ELK Stack, Nagios).

Manager of IT Technical Support Services responsible for operational oversight of Server, Storage, and Computer Operations teams at a large healthcare organization. Leads staff managing Unix/Linux/Windows servers, SAN storage, data center infrastructure, and high-availability systems across multiple data centers and cloud environments.…See more Ensures adherence to HIPAA, JCAHO, and Title 22 compliance while delivering service quality against defined SLAs. Requires 5+ years in healthcare IT infrastructure, systems management, and team leadership, with experience in ERP/EMR systems (EPIC, Meditech, PeopleSoft), virtualization (VMware), ITIL processes, and disaster recovery.

Mid- to senior-level C++ Software Engineer role focused on developing high-assurance cryptographic systems and secure communications software. Responsibilities include designing and maintaining C++ system services and APIs, developing Qt-based user interfaces, building secure communications interfaces, and participating in architecture and code reviews.…See more The ideal candidate has 3–10+ years of professional C++ development experience, strong Linux/Unix proficiency, networking fundamentals knowledge, and familiarity with cryptographic concepts or secure communications.

Computer Systems Analyst supporting classified government contracts, responsible for installing, upgrading, patching, and troubleshooting Windows systems and multi-user computer environments. Duties include managing Windows file systems, user accounts, permissions, security access lists, backup and recovery services, virus protection, and security audit logging on classified networks.…See more Must collaborate with network, software, and system engineers to isolate issues across hardware, firmware, operating systems, and applications, while adhering to strict information security guidelines and documenting findings for cybersecurity teams.

Principal Windows Systems Administrator supporting classified government contracts, responsible for maintaining multi-user Windows-based systems, Active Directory administration, Group Policy management, system compliance, backup/recovery services, and security audit logging. The role requires coordinating with system engineers, networking teams, and IT/Cyber management to ensure system reliability, apply patches and updates, troubleshoot cross-disciplinary issues, and maintain strict information security compliance.…See more Must hold a current Secret clearance and Security+ certification, with 3–9 years of relevant experience depending on educational background.

Senior Core & Applications Developer responsible for developing, supporting, and enhancing the Symitar Episys core banking platform and related applications. The role requires designing efficient solutions, analyzing complex business and system challenges, mentoring other developers through code reviews and best practices, and collaborating with business units to deliver strategic initiatives.…See more Requires minimum 4 years of programming experience with strong systems design knowledge and extensive Symitar Episys experience; proficiency in PowerOn, SymConnect/SymXchange, SymForm, HTML, JavaScript, CSS, jQuery, and XML.

Software engineer with 6+ years of backend development experience (or 4+ with a Master's degree) designing and optimizing high-performance algorithms for radar, optical, and infrared sensor systems. You'll work with a cross-disciplinary team to engineer scalable distributed systems, accelerate code on GPUs using CUDA, and integrate scientific codebases in Linux/Unix environments.…See more Strong expertise in C/C++, high-performance computing, MPI, parallel/distributed processing, and AI/ML algorithms is required, along with advanced mathematics or physics foundations and proven system-level problem-solving ability.

Senior Systems Engineer responsible for managing and automating enterprise Linux/Unix systems across VMware on-prem and hybrid environments in a regulated banking setting. Will develop and maintain Puppet automation modules for server provisioning, patching, and application deployment; administer vSphere, ESXi, and vCenter infrastructure; and ensure security hardening, compliance (SOX, FFIEC), and high availability for mission-critical applications.…See more Acts as L2/L3 resource for incident management, root-cause analysis, and operational stability, with scripting in Bash and Python to reduce manual recovery efforts.

BAE Systems seeks entry-level software engineers (Bachelor's or Master's degree expected by June 2027, <6 months experience) to develop C4ISR and geospatial intelligence applications for defense customers. You will apply Java, OOP, and software design principles in a collaborative, agile environment.…See more The role offers mentorship, onboarding, and exposure to full-stack development, cloud platforms, DevOps, and modern software architecture as part of a structured Year One program.

Entry-level software engineer role focused on automated test and software control of complex hardware systems for C4ISR solutions. You will develop code interfacing with hardware using C/C++ and Java, applying object-oriented design principles and electronics knowledge.…See more The position includes a structured Year One mentorship program and requires a Bachelor's in Computer Science, Computer Engineering, or Electrical Engineering (or equivalent hardware experience) by June 2027, with the ability to obtain a U.S. security clearance.

Full Stack Software Engineer I at MedImpact Healthcare Systems will design, develop, and maintain software solutions across the full development lifecycle using object-oriented design principles and modern web frameworks. The role requires hands-on experience with Python, Java, microservices architecture, and web technologies (Angular/React, Spring Boot, FastAPI/Flask), along with backend infrastructure (PostgreSQL, Redis, Kafka, Kubernetes).…See more You'll work in an Agile Scrum environment, collaborating with technical and non-technical teams, and communicate design decisions to diverse audiences. The position is both client-facing and internal-focused, requiring strong communication skills and the ability to work independently and collaboratively in a fast-paced healthcare technology environment.

Entry-level software engineer role supporting C4ISR and geospatial intelligence applications for defense customers. Requires a Bachelor's degree in Computer Science or related field (by June 2027) and proficiency in Java with understanding of object-oriented design and programming.…See more The role emphasizes full-stack development capabilities, familiarity with modern DevOps and cloud tools, and the ability to work collaboratively in an agile environment. Candidates with security clearance eligibility or prior internship experience are preferred.

Entry-level software engineer role focused on automated test and software control of complex hardware systems for C4ISR defense applications. Candidates will work with C/C++ and Java to develop systems that sense, control, and process actionable intelligence for warfighters.…See more The role requires a Bachelor's degree in Computer Engineering, Electrical Engineering, or Computer Science (with hardware knowledge) by June 2027, proficiency in object-oriented design and programming, and the ability to obtain a U.S. security clearance. Successful candidates will join a structured Year One mentorship program and work in an agile, collaborative environment.