Software Engineer Jobs in Irvine, CA

Design, develop, test, and maintain enterprise applications using C#/.NET Core, microservices, REST APIs, and React.js. Build scalable integrations, write unit and integration tests, conduct code reviews, troubleshoot defects and production incidents, and support deployment and monitoring. Collaborate with architects, product owners, QA, DevOps, and global engineering teams to deliver maintainable production-ready features. Contribute to technical design, risk management, performance optimization, and continuous improvement.

Designs, builds, and operationalizes production AI solutions for automotive applications, including LLM applications, RAG pipelines, intelligent agents, predictive models, and generative AI tools. Develops full-stack, cloud-native systems, prototypes AI capabilities, improves prompts and model performance, and integrates enterprise platforms. Collaborates with engineering, product, and data teams while ensuring governance, privacy, security, reliability, and observability standards.

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.

Owns architecture and design for enterprise-scale software systems, including full-stack products, secure data pipelines, microservices, serverless platforms, and event-driven architectures. Partners with product, technology, and engineering leadership to translate requirements into scalable solutions, document systems, guide architectural standards, mentor technical staff, and diagnose performance, reliability, and security issues. The role is based in Irvine with in-office work Monday through Thursday and remote work Friday.

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.

Design, build, and maintain CI/CD, build systems, monitoring, and deployment frameworks; automate infrastructure provisioning; ensure reliability, observability, security, and high availability; collaborate with developers and DevOps to optimize systems and troubleshoot production issues.

Design, develop, and maintain global corporate and product websites and web apps. Build responsive, accessible, and SEO-optimized frontends using modern JS frameworks; develop backend services in PHP and Go or Java; integrate and customize CMS platforms; collaborate with design, product, and marketing; optimize performance and accessibility; and mentor junior developers.

Designs and scales secure backend services, APIs, payment workflows, and financial tools for contractors. Responsibilities include system architecture, integrations, software lifecycle ownership, testing, deployment, observability, incident response, and operational excellence. The role collaborates with Product, Design, Finance, Risk, and Operations while mentoring engineers and promoting scalable, maintainable, reliable systems.

The Software Engineer focuses on building and maintaining development environments and tooling infrastructure to support engineering teams, improving developer velocity and code quality across projects.

Lead design and delivery of Turion's AI-first enterprise platform (Hyperdrive). Architect scalable, real-time data pipelines, APIs, and AI/LLM integrations; mentor engineers; collaborate with hardware, supply chain, and finance to automate and optimize aerospace operations.

The Flight Software Development Engineer in Test designs and develops testing frameworks and strategies for spacecraft software, ensuring quality through automated tests and collaboration with developers.

Leads enterprise full-stack software engineering projects from design through deployment and support. Develops cloud-native applications, microservices, secure APIs, smart search functionality, and product catalog ingestion pipelines using .NET Core, React, and search technologies. Provides technical leadership, architectural guidance, code reviews, incident management, troubleshooting, process improvement, and mentorship while partnering with product, infrastructure, operations, and business teams.

Build and ship end-to-end features for a consumer social platform using a modular monolith. Responsibilities may span identity and authentication, APIs, content systems, database architecture, client UI, real-time presence, graph queries, media pipelines, chat, and user-generated content. The role offers high ownership on a small team and requires in-office work in Irvine, California.

Design and develop embedded software and ECU simulations, maintain scalable automation and test frameworks, build multi-tiered regression test suites, collaborate with firmware and test engineers, and drive automated testing and release strategies using field analytics and CI pipelines.

Design and build cloud-native security governance and platform capabilities for AWS-based infrastructure. Implement automated security auditing, threat detection, access control, host and container security, and collaborate with engineering and operations to embed and improve platform security posture.

Lead the architecture, development, and scaling of full-stack applications powered by AI and LLMs. Design agentic workflows, embedding systems, personalized content delivery, and MCP integrations across web, mobile, SMS, voice, and APIs. Provide technical leadership, mentor engineers, improve reliability and performance, ensure security and privacy compliance, and drive initiatives from planning through production.

Build, maintain, monitor, and scale enterprise platform services spanning IAM, communications, payments, and API gateways. Design highly available and fault-tolerant products, evaluate technical tradeoffs, contribute to platform roadmaps and technical strategy, and collaborate with product, architecture, and design teams. The role also mentors engineers, promotes software quality and operational excellence, and applies backend platform engineering, API, messaging, DevOps, and AI-assisted development expertise.

Integrate, debug, deploy, and support autonomous wheeled robotic systems across federal and commercial programs. Build integration utilities and automated testing tools, improve software reliability, analyze system performance, collaborate across hardware and software domains, support customers in the field, and translate operational feedback into technical solutions. The role is fully onsite in Irvine, California and requires U.S. Person eligibility.

Design, build, and operate a unified cloud-native compute and network platform. Lead Kubernetes-based orchestration and large-scale Istio service mesh deployments on AWS, implement VPC/networking and traffic management (gateways, load balancers, CDN), and collaborate with engineering teams to improve scalability, reliability, and platform governance.

Design, develop, and maintain scalable, secure cloud backend services. Collaborate with cross-functional teams, optimize performance and cost, implement security best practices, containerize and deploy with CI/CD, troubleshoot issues, and participate in code and design reviews.

Design, build, and evolve cloud-native storage platforms for distributed databases and large-scale data services. Implement data placement, sharding, replication, backup/recovery, observability, and automation using Ansible, Terraform, Go, and Python. Collaborate with DBA, SRE, and platform teams to optimize performance, reliability, and operational workflows across distributed storage systems.

Design, develop, and maintain scalable, secure cloud-native backend services. Optimize performance, implement CI/CD and infrastructure automation, integrate with frontend and middleware, troubleshoot issues, participate in code reviews, and mentor junior engineers.