Software Engineer Jobs in Santa Ana, CA

Provides technical leadership for enterprise API architecture, development, governance, security, integration, and support. Leads complex initiatives across the full software development lifecycle, establishes API-first standards, designs secure and scalable RESTful services, mentors developers, and oversees reviews, testing, deployment, observability, documentation, and production support. Coordinates project delivery, evaluates technologies, partners with business and security teams, manages schedules and dependencies, and reports governance and performance metrics.

Own the architecture and technical direction of the Payments domain, including gateway integrations, payment APIs, distributed systems, data stores, and customer-facing applications. Lead multi-quarter migrations and delivery, establish security and reliability standards, mentor engineers, and partner across business and engineering teams. The role requires deep C#/.NET backend expertise, full-stack capability, payments and fintech experience, AWS and Kubernetes proficiency, database expertise, observability, and responsible use of AI development tools.

Design, build, operate, and secure identity and authorization services supporting vehicle, cloud, and enterprise systems. Own SpiceDB authorization models, APIs, SDKs, workload identity, OAuth2/OIDC, mTLS, key distribution, and cloud-native deployments on Go, Kubernetes, and AWS. Partner cross-functionally on platform adoption, incident response, vulnerability mitigation, regulatory compliance, and security architecture. Mentor engineers and lead platform capabilities from requirements through production operationalization.

Develop and test embedded software, kernel PHY drivers, APIs, utilities, diagnostics tools, and automated test infrastructure for Ethernet transceivers. Build Python-based GUI and data analysis systems, collaborate with hardware and firmware teams on performance optimization, and support field application engineers with customer issues. The role requires strong C and Python skills, embedded systems experience across Linux and Windows, debugging expertise, and familiarity with Ethernet protocols and development workflows.

As a ROS Developer, you will develop robotic applications using ROS/ROS2, integrate sensors, implement data processing pipelines, and collaborate on autonomy solutions for real-world applications.

Build and operate backend services, batch and real-time data pipelines, document-processing systems, APIs, integrations, and data models supporting an AI platform. Develop reliable OCR and LLM workloads, data quality monitoring, secure exports, cloud infrastructure, and CI/CD workflows. Design for distributed-system failures, authentication, authorization, and sensitive-data protection. Contribute to architecture decisions, maintain legacy services, support internal tools, mentor junior engineers, and improve engineering standards.

Design, build, and operate backend services, APIs, data models, event-driven systems, serverless services, and frontend applications supporting grading operations. Own complex projects from concept through production, select appropriate architectures, troubleshoot issues, write technical documentation, mentor engineers, collaborate with Product and Operations, and participate in on-call support. Work across .NET, Python, JavaScript, TypeScript, Vue.js, cloud infrastructure, databases, integrations, and observability tooling.

Build and operate backend services, APIs, data models, event-driven pipelines, internal applications, and integrations supporting high-volume grading operations. Develop end-to-end features with JavaScript, TypeScript, and Vue.js; troubleshoot data, service, integration, and UI issues; contribute to system design, testing, observability, documentation, and on-call support. Collaborate with Product, Technology, and Operations teams to create scalable systems and improve engineering practices.

Build and operate full-stack web applications across TypeScript/NestJS backend services, PostgreSQL databases, and Next.js/React frontends. Modernize legacy Java and PHP systems into AWS-hosted microservices, implement testing and observability, and deploy with Docker and infrastructure as code. Own multi-sprint features independently, participate in on-call and quality initiatives, mentor engineers, review code, and use AI coding tools responsibly throughout development.

Lead technical direction and multi-quarter delivery for a platform modernization effort. Architect TypeScript, Java, PHP, and cloud systems; guide monolith decomposition, distributed services, databases, observability, security, and operational excellence. Mentor engineers, coordinate stakeholders, establish engineering standards, and lead responsible adoption of AI-assisted development across the organization.

Design and build scalable backend architecture for PSA Set Registry, including cloud-based services, APIs, databases, microservices, event-driven systems, and batch processing. Own features through design, implementation, testing, deployment, and production support. Collaborate with product and engineering teams, troubleshoot complex systems, improve applications and data models, contribute technical designs and documentation, and apply security and monitoring best practices.

Lead architecture and delivery for Beckett’s software modernization, including NestJS and TypeScript microservices, Java and PHP legacy migrations, full-stack platforms, databases, AWS infrastructure, and distributed systems. Establish engineering standards for security, testing, observability, and operations. Mentor engineers, coordinate multi-quarter projects, manage cross-system risks, and guide responsible adoption of AI coding tools and LLM technologies.

Design, develop, test, deploy, and maintain secure cloud-native applications using Python, React, Azure, REST APIs, and microservices. Build and integrate AI capabilities including LLMs, RAG, agentic workflows, and Azure OpenAI services. Apply CI/CD, observability, secure SDLC, and responsible AI practices. Collaborate with product, architecture, UX, DevOps, and security teams, troubleshoot production issues, mentor engineers, review code, and influence technical direction in an agile environment.

Leads the design and delivery of secure, cloud-native software platforms supporting complex workflows, data-intensive applications, and AI capabilities. Provides architectural guidance across distributed systems, APIs, microservices, data pipelines, workflow orchestration, configuration-driven rules, and RAG/GraphRAG solutions. Ensures scalability, observability, auditability, security, and compliance while mentoring engineers, reviewing technical deliverables, improving CI/CD and incident response, and serving as an escalation point for complex technical decisions.

Leads the architecture, development, calibration, validation, and integration of automotive body-control systems, particularly lighting features. Develops requirements, simulations, test cases, and SIL/HIL validation strategies; troubleshoots physical, electrical, and software issues. Oversees projects, prioritizes issues, manages resources, collaborates cross-functionally, and mentors junior engineers while promoting robust software development practices.

Design and develop scalable cloud-based backend architectures for PSA’s consumer-facing Set Registry platform. Own features through architecture, implementation, testing, deployment, and production release. Build APIs for web and mobile applications, improve databases and existing applications, troubleshoot complex systems, and collaborate with product and engineering teams. Contribute to technical design reviews, documentation, monitoring, security practices, and automated testing.

Designs and operates AWS and Kubernetes infrastructure, CI/CD systems, GitOps workflows, and internal developer platforms. The role improves reliability, scalability, observability, deployment velocity, and operational maturity across production systems and data pipelines. Responsibilities include infrastructure as code, monitoring, autoscaling, incident response, debugging across application and infrastructure layers, and partnering with engineering teams on platform standards and developer productivity.

Develop, configure, customize, test, troubleshoot, document, and support moderately complex ServiceNow applications throughout the software lifecycle. Build application components, Service Portal widgets, and platform enhancements using ServiceNow capabilities, JavaScript, Glide APIs, AngularJS, HTML, and CSS. Apply SDLC, Agile, coding, and testing standards while supporting platform stability. Collaborate with teams, resolve system issues, maintain documentation, and stay current with ServiceNow and emerging AI capabilities.

Design and develop deterministic bare-metal and RTOS firmware for EV motor control systems. Configure BSPs, write low-level drivers, implement and optimize FOC and other control algorithms, improve CPU and memory efficiency, and validate performance through simulation and HIL testing. Collaborate with hardware, application software, and power electronics teams while documenting firmware architecture and testing methods.

Leads application engineering for an Azure modernization platform, defining target architecture, multi-tenant security, integration patterns, cloud-native services, data migration, and engineering standards. Modernizes legacy .NET, WCF, SQL, and on-premises applications while building unified client-facing experiences and third-party integrations. Provides hands-on technical leadership through coding, design reviews, mentoring, CI/CD, observability, security controls, and architecture decisions.

Develop backend services and APIs for fraud detection, risk scoring, transaction monitoring, and compliance automation. Lead technical initiatives, testing strategy, CI/CD integration, observability, incident management, and root-cause analysis. Build intelligent automated testing frameworks and production-grade financial software using .NET, C#, Azure, SQL Server, REST APIs, and microservices. Collaborate with InfoSec, Data Science, Compliance, and business stakeholders while mentoring junior engineers.

Develop embedded software for MANET radios, including MAC and routing protocols, network management, web interfaces, encryption, audio streaming, device drivers, and board support packages. Customize Linux systems, build testing software, and improve product security and reliability to meet NIST FIPS 140-3 and NIAP Common Criteria requirements. The role is fully onsite in Irvine and requires substantial C programming, Linux kernel development, and embedded systems experience.

Lead the architecture and development of low-latency embedded firmware for ARM and RISC-V systems supporting MANET radios. Develop Linux device drivers, networking stacks, MAC and routing protocols, security and encryption features, audio streaming, web interfaces, and testing software. Optimize system performance, customize Linux, maintain BSPs, and improve product security for regulatory compliance. This is a fully onsite Irvine role requiring U.S. citizenship and occasional field testing.

Designs and develops scalable web applications, APIs, and document lifecycle systems using Node.js and AWS. Builds secure solutions for document generation, signing, and vaulting while translating legal and business requirements into compliant technical implementations. Responsibilities include testing, continuous deployment, code reviews, system optimization, monitoring, troubleshooting, and mentoring engineers. Collaborates with product, engineering, and legal stakeholders to deliver reliable, high-availability document services.

Design, build, operate, and maintain scalable Ruby on Rails and React systems for Kajabi’s SaaS platform. The role owns features end to end, including reliability, observability, architecture, testing, and maintainability. It also requires product thinking, customer-focused decision-making, AI-assisted development, cross-functional collaboration, system design leadership, code reviews, and mentoring engineers. This is a full-time, in-person position in Irvine, California, five days per week.