Top Software Engineer Jobs in Los Angeles, CA

Administer and maintain Millennium's Atlassian/JIRA environments (production, dev, test); build projects, workflows, permissions; monitor server health; perform data migrations; provide user support and training; prepare documentation and coordinate upgrades and maintenance with IT.

Designs, implements, tests, integrates, verifies, validates, deploys, and maintains flight software for satellite vehicle management systems. Supports real-time and non-real-time software development, test planning, emerging technologies, debugging, and automated builds and testing within collaborative engineering teams. The role is fully onsite in El Segundo, California, supports Boeing Defense Services programs, requires U.S. citizenship and the ability to obtain a Secret clearance, and includes a technical coding assessment.

Develops and maintains software requirements, architectures, algorithms, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Leads features through design, development, testing, integration, and deployment in Agile and DevSecOps environments. Performs code reviews, automation, security and performance improvements, troubleshooting, and software quality advocacy. The role supports space systems and ground segments, including command and control, mission planning, data processing, CI/CD, and real-time geospatial applications.

Develops and integrates Special Test Equipment software for satellite hardware and subsystem testing. Responsibilities include object-oriented and embedded real-time development, instrument interfaces, test architecture, software verification, automated test orchestration, hardware/software troubleshooting, and test framework improvements. The role works closely with spacecraft telemetry, command, RF testing, and mission operations in a fully onsite aerospace environment.

Develops and verifies vehicle management flight software for aerospace and autonomy platforms. Responsibilities include translating requirements into software designs, integrating functions, building simulation and hardware-in-the-loop environments, creating automated test frameworks, executing manual and automated V&V activities, supporting CI/CD, investigating defects, maintaining technical documentation, and coordinating verification across multifunctional teams. The role is fully onsite and requires an active U.S. Top Secret clearance, U.S. citizenship, and up to 10% travel.

Designs, develops, tests, integrates, documents, and maintains multi-tiered software supporting space vehicle command and control. Responsibilities include Java and related technology development, requirements analysis, debugging, system integration, test planning, verification and validation, Agile process improvement, and user support. The role is fully onsite, requires an active Top Secret clearance, and may involve up to 10% travel.

Develop, test, maintain, and integrate mission software using Java, C++, Python, and ReactJS. Responsibilities include architecture, requirements, algorithms, interfaces, Agile/Scrum participation, code reviews, debugging, software research, process improvement, and compliance with engineering, safety, regulatory, and customer standards. The role collaborates with multidisciplinary teams and supports end-to-end software development for satellite space mission systems.

Designs, integrates, tests, debugs, and maintains software models, scenarios, and system-level satellite simulators for mission rehearsals and operator training. Translates customer requirements, develops automation tools, supports CI/CD deployments, and collaborates with multidisciplinary systems and software teams. The role requires active Secret clearance, U.S. citizenship, onsite work in El Segundo, and participation in a technical coding assessment.

Build and ship end-to-end consumer product features across frontend, backend services, APIs, data pipelines, and production infrastructure. Use AI coding agents, own Kubernetes services, monitoring, on-call responsibilities, performance, privacy, testing, architecture, and technical debt reduction. Instrument features and analyze results in Sigma and Snowflake. Collaborate with product teams, distributed colleagues, partners, and agencies while delivering weekly releases to millions of users.

Build and operate backend advertising services and APIs using Node.js and TypeScript, develop server-driven ad experiences, integrate advertising partners, and ship Android features in Kotlin. Improve system performance, reliability, observability, and testing while collaborating with senior engineers, product, and media sales teams. The role supports advertising across Android, iOS, web, and live video streaming applications.

Build and maintain a unified frontend platform for rocket factory operator applications. Develop React modules, shared components, design system features, and real-time telemetry interfaces. Migrate features from separate frontends, optimize live-data rendering, and contribute to shared architecture and code reviews. Collaborate with senior engineers while improving frontend performance, state management, and platform scalability.

Develop backend systems and continuous delivery platforms that help engineering teams release software independently and safely. Responsibilities include writing tested and extensible code, collaborating with stakeholders, debugging code, participating in code reviews, balancing delivery speed with reliability, and contributing to team growth. The role involves working with distributed systems and technologies including Python or Kotlin, AWS, MySQL, and Kubernetes.

Lead end-to-end flight software development for autonomous spacecraft, including mission operations tools, ground services, embedded vehicle software, telemetry, commanding, testing, simulation, and flight readiness. Collaborate with avionics, propulsion, GNC, and systems teams to define interfaces and data models. Support CI/CD, software- and hardware-in-the-loop testing, environmental testing, and flight campaigns in a fast-moving, on-site aerospace startup environment.

Develop and support C++ features for Lens Engine and Lens Studio, enabling augmented reality experiences across Snapchat and Specs. Contribute to agentic development tooling, architecture, technical roadmaps, code reviews, and cross-functional engineering efforts. Improve code quality, reliability, performance, testing, maintainability, and developer productivity while integrating AI-assisted workflows and systems.

Build and lead real-time 3D augmented reality applications for Spectacles and Snap OS. Responsibilities include designing spatial interactions, integrating system services and platform APIs, optimizing applications for resource-constrained AR hardware, making architectural decisions, defining technical direction, collaborating cross-functionally, and mentoring engineers.

Develop and launch reliable backend systems using Python or Kotlin, AWS, MySQL, and Kubernetes. Break projects into deliverable phases, collaborate with product, design, and analytics teams, monitor system metrics, support availability and on-call operations, debug code, conduct code reviews, and contribute to team growth and interviewing. The role requires 1.5+ years of software engineering experience and strong communication skills.

Design, implement, test, debug, and operate scalable backend services such as identity, friend graph, and persistence systems. Collaborate across teams to deliver product solutions while maintaining availability, scalability, security, operational excellence, and cost efficiency. Investigate incidents and hotfixes, apply distributed-systems best practices, and use AI-assisted development tools while auditing output for quality and security.

Designs, develops, tests, integrates, debugs, and maintains non-embedded software for classified defense programs. Translates customer requirements into software architectures, interfaces, algorithms, and designs; supports system integration and lifecycle processes. The role also handles technical issues, improves development processes and metrics, conducts software research, and ensures compliance with quality, safety, regulatory, and customer standards. Work involves Java, ReactJS, DevOps tools, Agile methodologies, and classified-program environments.

Design, build, scale, and operate high-volume payment APIs and distributed systems serving global traffic. Lead complex engineering projects from requirements through production, improve reliability, performance, observability, fault tolerance, and security, and participate in on-call and incident response. Collaborate across product and engineering teams, use AI-assisted development tools responsibly, and mentor engineers through technical reviews and documentation.

Develop, document, test, and support Parsec’s TrakSYS manufacturing execution software platform. Responsibilities include designing features, writing maintainable code, preparing technical specifications, conducting code reviews, troubleshooting application issues, and collaborating across teams. The role requires Microsoft .NET, SQL Server, web development, Windows, SDLC tools, and cloud experience, with preferred knowledge of TypeScript, Bootstrap, unit testing, and manufacturing automation.

Build and operate scalable, customer-facing full-stack software for Samsara’s safety products. The role involves developing web, mobile, API, and platform capabilities; integrating LLMs, agentic workflows, and RAG; evaluating AI quality; and improving reliability, scalability, and operational health. The engineer collaborates with Product, Design, ML, and platform teams while owning features from concept through production.

Build and deliver backend payment-processing features using Kotlin, scalable APIs, microservices, and containerization. Develop automated tests, monitor feature rollouts, collaborate with UX and product management, and participate in design and code reviews. The role supports Toast’s unified payments platform and requires East Coast working hours.

Build and maintain scalable backend platforms for capital orchestration, transaction reconciliation, collateral movement, data pipelines, and business workflows. Collaborate with engineers, product managers, designers, analysts, and business stakeholders to design systems, write tested code, improve reliability, and deliver projects incrementally. Support production operations through monitoring, metrics, debugging, code reviews, and on-call responsibilities.

Leads software systems engineering for SATCOM mission planning tools supporting space and ground systems. Responsibilities include requirements, architecture, API and backend development, frontend interfaces, integration, testing, deployment, code reviews, security, performance improvements, and technical mentoring. The role requires Python, JavaScript, TypeScript, Agile and DevSecOps experience, an active U.S. Secret clearance, U.S. citizenship, and full-time onsite work in Seal Beach, California.

Develop and maintain software requirements, architecture, algorithms, interfaces, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Work throughout the Agile and DevSecOps lifecycle, including design, coding, integration, testing, deployment, code reviews, automation, security, and performance improvements. Support CI/CD pipelines, Kubernetes optimization, databases, geospatial visualization, and software for space systems and ground segments.