Sr. Full Stack Software Engineer

Moon•Hacienda Heights, CA

109d

About The Position

We are seeking a Senior Full Stack Engineer to lead the development of new products at MOON. This is a hands-on engineering role that requires deep experience across front-end (React) and back-end (preferably .NET/C#, though strong backgrounds in other modern frameworks like Node.js or Python are welcome). You will be responsible for architecting and building scalable, microservices-based applications that deliver exceptional user experiences. A key expectation is a strong willingness to leverage AI tools throughout the development process (for coding, testing, documentation, and automation) and to embed AI-powered capabilities directly into our products to create smarter, more efficient solutions for our customers. This is a highly collaborative, customer-centric role. You will work closely with product, design, and other engineers to ensure our platform is intuitive, secure, and capable of integrating with a variety of external systems.

Requirements

Bachelor’s degree in Computer Science, Engineering, or equivalent experience.
7+ years of professional experience in full stack software engineering.
Strong expertise in React (hooks, context, state management, modern patterns).
Proficiency in .NET/C# other modern frameworks such as Node.js or Python for back-end development.
Hands-on experience designing and implementing microservices architectures.
Strong work experience and knowledge of SQL databases (PostgreSQL, SQL Server) and with NoSQL systems.
Deep understanding of API development and security (REST, GraphQL, OAuth2, JWT, API gateways).
Experience with cloud platforms (Azure, AWS, GCP) and containerization (Docker, Kubernetes).
Demonstrated ability to use AI tools extensively in development workflows (coding assistance, test generation, documentation) and to build AI-driven product features.
Excellent problem-solving, architectural design, and communication skills.
Excellent communication and teamwork skills.
Practical experience working in Agile teams.

Responsibilities

Lead the design and implementation of full stack features, combining React front-end development with back-end services in .NET/C# (preferred) or other modern languages and frameworks (e.g., Node.js, Python).
Architect and deliver scalable, microservices-based systems deployed on cloud platforms (AWS, Azure, GCP).
Design and optimize data models and integrations with SQL (PostgreSQL, SQL Server) and NoSQL databases.
Build and maintain robust APIs (REST, GraphQL) with secure authentication and authorization (OAuth2, SAML, tokens, API gateways).
Apply AI-assisted development tools to improve coding speed, testing efficiency, and documentation quality.
Collaborate with cross-functional teams (product, design, and customer-facing engineers) to deliver intuitive, reliable user experiences.
Identify opportunities to embed AI and automation features into MOON’s products to drive innovation and customer value.
Ensure high code quality, performance, and security across front-end and back-end systems.
Mentor and support junior engineers, contributing to architectural decisions and best practices.