Top Software Engineer Jobs in Los Angeles, CA

Design, develop, and maintain AI-powered applications. Collaborate with engineering and product teams to deliver scalable solutions and mentor other engineers. Conduct experiments to guide product decisions.

As a Software Engineer, you'll develop software using Ruby, Javascript, and support AWS infrastructure. Responsibilities include maintaining and building applications, contributing to high-end software releases, and mentoring other engineers.

Join Cash Trust Identity as a Software Engineer to enhance customer identity systems, focusing on security and reliability. Deliver high-quality solutions, mentor junior engineers, and collaborate across teams.

The Software Engineer will build and improve mobile experiences for Square's connected hardware products, working on reliable systems and integrations across various technologies.

Build and scale backend services for verification orchestration, decisioning, and fraud detection. Integrate third-party data providers and ML models, develop rule engines, maintain APIs and Kafka events, improve document automation, and enhance observability, compliance, and platform reuse across lending products.

Design, implement, and operate scalable backend services for ad delivery. Collaborate on product requirements, advocate best practices, and debug complex systems.

Build and scale full-stack systems and microservices powering engagement features (credit health, financial wellness, gamification). Design event-driven, Kafka-based pipelines, collaborate cross-functionally, support experimentation/A-B testing, ensure regulatory/compliance alignment, and improve reliability and performance of production systems.

Full‑stack engineer building donor and fundraising features using React, TypeScript, REST, and Ruby on Rails. Deliver small-to-medium projects, improve performance and maintainability, participate in code reviews and QA, collaborate with product and design, and contribute to architecture and team mentorship.

The Flight Software Engineer will design, implement, and test flight software, ensuring safety and quality for satellite programs, while interfacing with a diverse team.

As a Software Engineer in Buyer Growth, you will drive growth initiatives, design end-to-end systems, and mentor engineers in a fast-paced environment.

Design and build large-scale systems for managing merchandise, ensuring data synchronization across platforms, and collaborating with cross-functional teams to support enterprise-level sellers.

Responsible for enhancing the platform's video quality, developing seller tools for livestream interaction, and defining the video strategy at Whatnot.

Contribute to the development of web-based frontend space ground system software, collaborating with teams and ensuring code quality through testing and reviews.

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

Design, build, and scale highly performant, highly available backend systems for advanced crypto trading instruments. Architect robust services supporting multiple instrument types, collaborate with product and design, and deliver high-value, observable features for traders worldwide.

As an Infrastructure Software Engineer, you will build and optimize scalable systems for user data management while mentoring peers and collaborating on innovative solutions.

Lead the design and implementation of backend services for data cataloging and ML training systems, focusing on performance and scalability.

Join the Payments team to design, build, and maintain secure, scalable payment systems. Work across the stack on payment processing, recurring contributions, fraud mitigation, ETL pipelines, testing, monitoring, and operational tooling. Collaborate with product, platform, ops, and security teams to deliver reliable features, debug complex issues, and improve payment workflows while contributing to team documentation and on-call support.

Develop features for Android applications, conduct code reviews, and evaluate technical tradeoffs while ensuring great user experiences.

Design and implement secure, scalable backend services for voice agents, integrate AI models and telephony, improve inference, debug concurrent systems, and collaborate with Product to deliver features end-to-end.

As a Full Stack Software Engineer, you will develop tools for cloud management, build APIs and UIs, and maintain cloud systems.

The role involves collaborating with mobile developers to build and release high-quality applications, ensuring seamless functionality through testing and code reviews, while contributing to product innovation.

As a Software Engineer, you'll lead projects, make architectural decisions, and collaborate with cross-functional teams to enhance our auto refinance and secured personal loans products.

The Senior Mobile Software Engineer will develop high-performance mobile applications, optimize performance, and collaborate with teams to enhance the user experience while ensuring app quality through testing and debugging.

The Software Engineer role involves building scalable discovery systems, integrating machine learning for recommendations, and collaborating with cross-functional teams to enhance the platform experience.