Senior Full Stack Software Engineer Jobs in Pasadena, CA

Location: West Hollywood / Los Angeles, CA
Work Model: On-site (5 days per week)
Employment Type: Full-Time
Compensation: $200,000–$400,000 USD, (depending on experience)

Applicants must be legally authorized to work in the United States. Visa sponsorship is not available for this role.

Our client is a highly respected, innovation-driven private organization with a small, elite engineering team focused on building technology that supports impactful initiatives across philanthropy, scientific research, sustainability, climate, ocean, and aerospace programs.

Rather than developing customer-facing products, the engineering team builds and maintains mission-critical internal platforms that enable complex business operations and long-term strategic initiatives. Engineers enjoy significant ownership, collaborate directly with senior technical leadership, and work in a low-bureaucracy environment where they have the opportunity to influence architecture, technical direction, and engineering best practices.

We are seeking a highly motivated and technically strong Full Stack Software Engineer to join the Enterprise Technology Application Development team.

In this role, you'll help design, build, and maintain a portfolio of modern internal business applications that support critical operational workflows across multiple functions of the organization. You'll work across the full technology stack—from backend services and APIs to databases and modern web applications—while partnering closely with senior engineering leadership to deliver scalable, maintainable, and reliable software.

This is an exceptional opportunity for engineers who enjoy solving complex technical challenges, taking ownership from design through production, and working in an environment that values engineering excellence, autonomy, and collaboration.

• Design, develop, and deliver full-stack software solutions across backend services, APIs, databases, and frontend applications.
• Develop and maintain scalable backend services using Java and Spring Boot.
• Build modern, responsive user interfaces using React and TypeScript.
• Design relational database schemas and implement robust PostgreSQL data models.
• Develop and integrate RESTful APIs and microservices.
• Participate in system architecture discussions and contribute to technical design decisions.
• Build and maintain containerized applications using Docker while supporting modern CI/CD workflows.
• Collaborate closely with senior engineers and cross-functional stakeholders to deliver high-quality software.
• Take ownership of features and systems throughout the software development lifecycle—from design through deployment and ongoing support.

The ideal candidate will have:

• Strong experience developing full-stack applications in production environments.
• Expertise with Java, Spring Boot, REST APIs, and modern backend development.
• Strong frontend development experience using React and TypeScript.
• Solid understanding of PostgreSQL, relational database design, and data modeling.
• Experience with Docker, containerization, and modern CI/CD practices.
• Strong software architecture and system design skills.
• Experience building scalable, maintainable, and reliable production systems.
• The ability to work independently while collaborating effectively with engineers and business stakeholders.
• Excellent communication, analytical, and problem-solving skills.
• A strong sense of ownership, accountability, and engineering craftsmanship.

Experience in one or more of the following areas is considered an asset:

• Enterprise business applications
• Workflow automation and operational systems
• Financial systems or enterprise software integrations
• Microservices architecture
• Cloud-native application development
• Kubernetes or container orchestration
• Production software supporting complex business operations

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related technical discipline.
• Equivalent practical experience will also be considered.

• Base Salary: $200,000–$400,000 USD, depending on experience
• Full-time, on-site position in West Hollywood, California.
• Comprehensive benefits package
• Opportunity to work within a highly collaborative engineering team with significant technical ownership.
• Direct partnership with senior engineering leadership on architecture and long-term technical strategy.
• Meaningful work supporting innovative initiatives across science, sustainability, philanthropy, climate, ocean, and aerospace.