Top Senior Linux Jobs in San Diego, CA

Designs and owns silicon photonic components, subcircuits, and photonic integrated circuits from architecture and simulation through layout, verification, tapeout, and production handoff. Responsibilities include electromagnetic and optical-circuit simulation, PDK and PCell development, Python workflow automation, design verification, optical and system co-design, test structure definition, characterization analysis, and cross-functional collaboration with silicon, packaging, III-V, IC, and operations teams.

Own complex network, security, identity, endpoint, SaaS, and infrastructure escalations. Design and troubleshoot enterprise networks, lead security and major incident response, review technical changes, support deployments, improve monitoring and documentation, create standards and playbooks, mentor Tier 1 and Tier 2 engineers, and provide technical leadership to clients and internal stakeholders. The role includes on-call participation, client-site support, and approximately 10–20% travel.

Lead and mentor a team of engineers while contributing hands-on to complex features. Define architecture, drive development best practices, conduct code reviews, coordinate cross-functional requirements, and ensure timely delivery of high-quality ecommerce marketplace software.

Build and own OpenRouter’s financial infrastructure, including flexible pricing, quote-to-cash automation, usage metering, billing, payments, collections, double-entry ledgering, provider settlements, and reconciliation. Ensure financial correctness through idempotency, auditability, anomaly detection, and access controls. Partner with Provider, Trust & Safety, Sales, Customer Success, and Finance teams to deliver scalable usage-based financial systems.

Designs, deploys, maintains, and supports datacenter, LAN, WAN, VPN, routing, switching, and firewall infrastructure. Provides Tier III troubleshooting, network performance and security monitoring, vulnerability remediation, capacity planning, automation, documentation, and change management. Leads technical projects, supports maintenance and upgrades, coordinates vendors, trains operations teams, and provides occasional after-hours on-call support. The role is hybrid after 90 days onsite and requires occasional travel.

Lead the architecture, development, security, deployment, and ongoing maintenance of backend services supporting consumer and store associate mobile applications. Collaborate with clients, vendors, product managers, and engineers; oversee coding standards, CI/CD, documentation, incident support, and data deletion workflows. Mentor backend developers, resolve complex technical issues, and ensure scalable, secure, high-quality delivery across mobile backend systems.

Leads aerospace new product development, sustaining engineering, and R&D programs from proposal through entry into service. Provides technical leadership across cross-functional teams, oversees designs, analyses, testing, certification documentation, and manufacturing support. Coordinates schedules, resolves complex technical issues, interfaces with customers and suppliers, communicates risks, supports audits, and mentors junior engineers. The role requires aerospace engineering expertise, aircraft certification experience, engineering drawing and GD&T proficiency, and knowledge of aircraft fluid, thermal, or mechanical systems.

Design, develop, and modernize a proprietary loan management platform. Build scalable full-stack solutions, improve architecture, reliability, monitoring, testing, and deployment practices, and resolve complex technical issues. Partner with Product, QA, DevOps, and Engineering teams while contributing to technical strategy, code reviews, development standards, mentoring, and continuous improvement across production and development environments.

Drive electrical design for high-speed digital communication systems, RF and mixed-signal electronics, complex power systems, and multilayer PCBs. Own board development from architecture and component selection through schematic capture, layout, bring-up, debugging, testing, and production. Collaborate with hardware, software, RF, antenna, FPGA, firmware, and manufacturing teams while leading technical efforts and mentoring engineers.

Leads end-to-end Salesforce solution design and delivery for complex enterprise projects. Creates System Design Specifications, develops scalable solutions, and provides technical expertise across architecture, development, quality assurance, testing, and production support. Acts as a subject matter expert, consults with project teams and vendors, provides technical recommendations, and coaches others. The role requires extensive Salesforce development and project delivery experience, API and data mart knowledge, and occasional domestic travel.