Top Application Engineer Jobs in Los Angeles, CA

Provides application development, configuration, troubleshooting, documentation, testing, and administration across enterprise and SaaS platforms. Works with analysts and business users to gather requirements, automate workflows, support change control, and maintain custom processes. Develops solutions using Microsoft, Atlassian, Oracle, Dynamics, and data movement platforms, while supporting compliance, after-hours assistance, and backup administration.

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.

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.

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.

Develop reliable software solutions for K2 Space's satellite operations, collaborating with engineers and leaders to improve design and operations.

Develop reliable, mission-critical applications used across SpaceX for launch vehicle production, flight operations, Starlink, manufacturing, and customer systems. Responsibilities include designing, prototyping, coding, testing, deploying, monitoring, and improving software performance. The engineer will own product development, investigate user needs, participate in architecture and code reviews, and collaborate with engineering teams. This is an onsite role that may require extended hours or weekends based on launch schedules.

Develop highly reliable real-time applications for SpaceX launch vehicle production, Starlink, manufacturing, satellite operations, and customer systems. Responsibilities include architecture, design, code reviews, prototyping, experiments, and collaboration across engineering disciplines. Candidates need STEM education, software development experience, and familiarity with networking or distributed systems. The role may require extended hours and weekends.

Design, deploy, operate, and scale mission-critical application platforms. Build infrastructure as code, improve observability, participate in on-call rotation and incident response, collaborate with software teams, optimize performance, and support vehicle software engineers.

Build, operate, and scale mission-critical application infrastructure and tooling for vehicle and satellite software delivery. Manage infrastructure as code, improve observability, collaborate with engineers, participate in on-call rotation, perform incident response and postmortems, and provide end-user support to reduce build and test times.

Build, operate, and scale mission-critical application platforms to accelerate vehicle software delivery. Manage infrastructure as code, improve observability, collaborate with developers, run on-call rotations, conduct blameless postmortems, and reduce performance bottlenecks to support Falcon, Starship, Dragon, and Starlink software lifecycles.

Develop HPC and AI software workflows for experimental data processing, imaging, plasma, high-energy physics, and materials simulations. Profile applications, benchmark performance, identify bottlenecks, and advise collaborators and product teams. Build tutorial examples, translate research into software tools, and represent NVIDIA at scientific conferences and industry events.

The Senior Software Engineer will design and develop IMS TM and DB-compatible technologies, providing architectural leadership and mentoring while optimizing mission-critical applications for modern environments.

Lead and manage a team building mission-critical finance applications. Own system roadmaps, prioritize and deliver reliable, highly available software, collaborate with finance and engineering partners, and improve systems for data integrity, auditability, and scale.

Design, build, and maintain highly reliable full-stack applications used across SpaceX. Own architecture, development, testing, deployment, and performance optimization. Collaborate with cross-functional teams, prototype solutions, and support production systems for launch and Starlink operations.

Design, develop, and maintain highly reliable full‑stack applications used across SpaceX for manufacturing, launch, and satellite operations. Own product lifecycle from prototyping to deployment, collaborate on architecture and code reviews, optimize performance, and implement testing, CI/CD, monitoring, and operational tooling.

As a Staff Application Platform Engineer, you will enhance developer productivity, design scalable systems, ensure security, and collaborate cross-functionally on projects from ideation to deployment.

Design, build, and maintain mission-critical full stack applications for SpaceX and Starlink. Own architecture, development, testing, deployment, and performance optimization. Collaborate cross-functionally to prototype, deliver production systems, and deeply understand user problems. Work onsite and support launch cadence, including extended hours when required.

Design, build, and own mission-critical full-stack applications used across SpaceX and Starlink. Develop reliable software, prototype designs, improve performance, integrate CI/CD and monitoring, collaborate on architecture, and solve user problems to support high-throughput manufacturing and satellite operations.

The Applications Engineer installs and integrates AI vision systems on production lines, troubleshoots issues, and provides customer support in manufacturing environments.

Build and deploy integrations between the Bayesian platform and large EHR systems, implement automated integration and end-to-end tests, support production deployments and go-lives, develop tooling and automation (including LLMs), and collaborate with implementation and clinical teams to deliver clinician-facing workflows.

As a Senior Application Software Engineer, you will design and develop mission-critical software for satellite operations, collaborating with cross-functional teams to improve efficiency, scale, and support ambitious missions.

Design, develop, and maintain SpaceX's in-house test infrastructure and applications for production, integration, and simulation testing. Improve reliability, performance, CI/CD, and developer tooling (including AI enhancements). Collaborate with flight software teams to deliver scalable, performant testing tools that accelerate vehicle production and validation.

Lead a small scrum team as hands-on technical authority, writing and reviewing full-stack C#/.NET, Angular, and Oracle code; run sprint ceremonies; drive AI-first tooling adoption; manage and develop 4–5 engineers; coordinate cross-functional delivery and client engagement.