Top Application Engineer Jobs in Los Angeles, CA

Build and maintain People-team backend services and automations: design scalable solutions, integrate AI/LLM APIs, create middleware and chatbot integrations (Slack, Workday, Jira), automate HR workflows, deploy cloud services, and mentor junior engineers while ensuring operational excellence and testing.

Reviews cooling-system drawings and submittals for equipment selection, capacity, and hydronic configuration accuracy. Collaborates with customer and consulting engineers, supports estimating with technical proposal input, and provides engineering assistance to project managers and customers throughout installation and startup. Resolves technical questions, drawing conflicts, RFIs, and submittals, while feeding field experience into research and product development. The role focuses on data center cooling systems, including chillers, CDUs, and liquid cooling for AI and hyperscale deployments.

Develop and architect large-scale enterprise applications as part of an agile full-stack team. Design cloud-native architectures, microservices, APIs, data platforms, and responsive front-end applications. Analyze business and technical challenges, translate stakeholder needs into technical roadmaps, and support modernization initiatives. Collaborate on solution design, coding, reviews, testing, documentation, demonstrations, and production issue resolution while championing secure, scalable, maintainable engineering practices.

Designs, develops, tests, deploys, and maintains enterprise applications on the Duck Creek platform. Owns features and enhancements through implementation, resolves defects and performance issues, participates in technical design, performs code reviews, supports CI/CD and deployments, analyzes integrations, and improves engineering practices. Collaborates with analysts, QA, DevOps, and product teams while mentoring junior developers.

Design, develop, test, deploy, and maintain enterprise GIS web and desktop applications throughout the software development lifecycle. Collaborate with clients and Agile teams to define requirements, make architectural decisions, write tested and documented code, conduct code reviews, troubleshoot defects and performance issues, and support production environments. The role requires modern frontend, backend, database, testing, version control, and CI/CD skills, with preferred experience in desktop applications, legacy systems, containers, security remediation, and AI/ML integration.

Develop, test, and deploy infrastructure-management software across Linux and Windows environments. Design infrastructure services architecture, automation modules, deployment orchestration, containerized application deployments, and CI/CD test frameworks. Configure application servers, load balancers, proxies, networks, and VPCs. Troubleshoot production and container issues, support operations teams, coach engineers, establish configuration-management standards, and participate in code and design reviews.

The Lead Application Engineer drives business strategy with technical expertise in the Inquiry to Order phase, ensuring high-quality proposals and technical accuracy for electrical projects while mentoring team members.

Deploys, hardens, troubleshoots, and modernizes Windows and .NET applications across on-premises environments and AWS. Responsibilities include Terraform infrastructure, CI/CD pipelines, SQL Server and Amazon RDS administration, load balancing, WAF configuration, observability, certificate management, automation, migrations, incident response, documentation, and collaboration with application owners. The role is remote but requires weekly onsite availability in Rockville, Maryland, and may involve occasional after-hours maintenance or outage troubleshooting.

Develops and supports software applications. The posting requires U.S. citizenship or naturalized citizenship and mandates that all work be performed within the continental United States, Alaska, or Hawaii.

Lead administration and optimization of Siemens NX and Teamcenter, manage part libraries, support NX-to-Teamcenter integration, resolve complex CAD issues, implement best practices for large assemblies and MBD, and lead upgrades and testing to ensure continuous production readiness.

Develop and maintain native iOS and Android applications for streaming experiences. Collaborate on TV platforms, establish architecture, and utilize AI tools to enhance productivity.

Remote Mendix low-code developer to design, configure, and implement Mendix applications (microflows, nanoflows, domain models, UI, integrations). Support requirements gathering, process analysis, UAT, QA, defect resolution, and Agile/Scrum delivery for an Arizona state agency. Coordinate with stakeholders and maintain project documentation.

ClaimsXM Application Developer role. Specific responsibilities not provided. Job requires U.S. citizenship, work to be performed within the United States, and offers $100,000$120,000/year.

Design, build and ship native Android features for an AI-enabled neobank using Kotlin. Improve UX, performance, reliability and integrate backend APIs. Collaborate with product and design to simplify user journeys and use analytics and production data to iterate on mobile experiences.

The GMS Application Engineer will design, develop, and maintain GMS applications, collaborating with teams to ensure high-quality software solutions and addressing user requirements.

Seeking a skilled Kubernetes Administrator and Application Developer for contract work, responsible for deploying, managing Kubernetes applications, and cluster administration.

As an AI Applications Engineer, you will bridge AI research and implementation, driving experiments, building infrastructure, and releasing products to improve user experience and metrics.

Develop and maintain enterprise-grade .NET web applications using C#, ASP.NET/MVC, Web API/WCF, SQL Server and AWS. Build UI with HTML5/CSS/JavaScript and Angular/React, implement data access with Entity Framework, SSIS/SSRS, and work on design/architecture reviews within mortgage servicing domain in a global delivery environment.

Build, maintain, and ship the Jan cross-platform desktop app using Tauri. Work full-stack (React/Node.js frontend, Rust native), own packaging, builds, installers, auto-update, code signing, and release pipelines, and provide first-class Linux support. Integrate local model runtimes and use agent-native workflows to iterate quickly while ensuring reliability and performance.

Design and develop web applications and GIS solutions, integrate data, lead projects, mentor junior developers, and participate in stakeholder meetings.

Provide application support for metrology products by analyzing customer needs, recommending software solutions, conducting demonstrations and training, troubleshooting software/application issues, supporting sales and distributors, maintaining CRM records, and representing the company at trade shows and industry events.

Lead technical design and engineering standards for Palantir Foundry applications. Guide architecture, data modeling, integrations, and platform enablement. Conduct design reviews, mentor engineers, manage cross-project technical planning, and act as escalation for production issues. Communicate technical tradeoffs to stakeholders and improve operational readiness, testing, and deployment practices.

Collaborates with senior engineers to maintain and enhance secure, scalable software. Responsibilities include implementing features, troubleshooting issues, documenting technical designs, applying modern SDLC and CI/CD practices, automating testing and infrastructure, researching solutions, and partnering with architects and cross-functional teams. The role requires object-oriented programming knowledge, web services and database familiarity, JavaScript framework experience, Agile development experience, and strong communication skills.

The Application Software Engineer will work with customers to customize and integrate Sift's telemetry platform, develop solutions, and maintain customer relationships. They will collaborate with various teams to translate requirements and enhance workflows.

Build and ship Android and/or iOS features for BJAK's AI Neobank app. Own end-to-end mobile experiences—from product problem through releases—working with backend, design, product and AI teams. Improve app quality using analytics, crash reports, and user feedback, and raise standards for UX, reliability and performance.