Top Software Engineer Jobs in Los Angeles, CA

Design, develop, test, and maintain full-stack web applications on AWS. Translate customer requirements into software architectures, participate in agile development, debug performance issues, implement engineering best practices, manage supplier performance, and ensure compliance with safety, regulatory, and security requirements.

Design, implement, and operate critical, scalable backend services (identity, friend graph, storage). Collaborate across teams, evaluate trade-offs, test and debug, manage availability, scalability, operational excellence, cost, and participate in incident resolution.

The Software Engineer II will develop AI capabilities, implement workflows, manage integrations with LLM providers, and enhance the TrakSYS platform while ensuring security and reliability.

Design, implement, and operate critical, highly scalable backend services (identity, friend graph, persistence). Collaborate across teams, build and test distributed systems, ensure availability and operational excellence, use AI tools to accelerate development, and participate in incident response and debugging.

The role involves designing and implementing simulation software for spacecraft using C++ and collaborating on algorithms for orbital mechanics and control.

Design, implement, and maintain APIs, backend services, and front-end interfaces for mission planning and satellite/ground systems. Lead feature development across the full lifecycle in an Agile DevSecOps environment, emphasizing automation, testing, security, performance, and code quality. Support integration, CI/CD pipelines, and geospatial visualization for defense communications systems.

Design, implement, test, and maintain real-time/near-real-time software simulation models and system-level simulators for satellite mission rehearsal and operator training. Translate customer requirements, integrate and debug simulation scenarios, collaborate with multidisciplinary teams, and create automation tools for configuration and deployments in an agile CI/CD environment.

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.

Build and ship high-quality messaging features for Snapchat iOS. Improve reliability, latency, and performance of chat and media delivery. Collaborate with product, design, and backend teams, instrument and A/B test features, and maintain code quality, testing, and observability for a large-scale iOS codebase.

As a Video Engineer at Whatnot, you'll enhance the platform's video services, develop seller tools, and implement innovative video strategies to improve user engagement and experience.

As a Senior Software Engineer on the Logistics Platform team, you will enhance logistics systems by building APIs, improving data quality, and partnering with cross-functional teams to solve complex problems, ultimately improving user experiences and operational outcomes.

The role involves developing ML systems, designing low-latency infrastructure, and collaborating on AI/ML initiatives while ensuring reliability and performance at scale.

As a Software Engineer in Data, you will enhance core product experience, optimize integrations, manage data systems, and support scalable services.

Design and implement Android features from design through launch, optimize mobile UX and performance, perform code reviews, evaluate technical tradeoffs, and use AI tools to streamline development while maintaining security and production-quality code.

As a Senior Software Engineer at Whatnot, you'll build AI tooling for internal use, developing workflows and infrastructure to enhance software delivery. You'll collaborate across teams to gather feedback and prioritize features in a rapidly evolving landscape.

Design, implement, and maintain partner integration solutions; translate partner requirements into scalable technical implementations; troubleshoot and automate fixes; collaborate with product and engineering teams to improve tools and ensure successful partner onboarding and launches.

Build and operate ingestion, reconciliation, and reporting systems that reconcile card-network and partner settlement files against internal transactions. Deliver end-to-end features for traceability, accounting journals, tax and regulatory reporting, and compliance tooling while ensuring reliability, scalability, and data privacy.

Lead design and delivery of scalable customer-facing features, services, and APIs that process real-time data and AI-powered insights. Build web experiences, contribute to LLM/AI workflows, ensure reliability through observability and rollout practices, and collaborate cross-functionally with Product, Design, ML, and platform teams.

Build and architect frontend user interfaces for the Service Monetization Platform, focusing on acquisition and secure checkout. Collaborate with design, product, QA, and data teams to solve complex problems, optimize performance, and deliver features through end-to-end delivery, testing, and deployment in an Agile environment.

Design and implement complex Android platform projects, build core frameworks and tooling, improve app performance and stability, collaborate with product and design, review code and document best practices, drive Android engineering standards, and use AI code-generation tools to architect and produce code.

Build and evolve Circle Discover marketplace features: high-converting purchasing flows, algorithmic recommendations, content feeds, and listings. Work across a Ruby on Rails backend and React/Next.js front-ends, optimize performance and SSR/SSG, collaborate with designers and leaders, and improve codebase quality while shipping at pace in a distributed remote team.

Design, build, and operate services powering card issuance, transaction authorization, wallet provisioning, 3-D Secure, and disputes. Own features end-to-end within a microservice, event-driven architecture, write well-tested code, participate in reviews, and perform operational ownership including on-call and incident response. Leverage AI developer tools to improve velocity and quality.

Build and operate high-throughput backend services powering AI agent orchestration, connector integrations, and real-time data pipelines. Design scalable core platform services, collaborate with ML, frontend, and product teams, implement infrastructure-as-code and CI/CD, and mentor junior engineers to deliver reliable, AI-powered features.

As a Software Engineer, you'll design, build, and maintain IAM solutions, ensuring security and reliability while working with cloud computing standards.

The role involves designing and optimizing backend systems for data migration and integration tools. Collaborates with teams to enhance performance and scalability.