Senior Backend Software Engineer

Who We Are Applied Materials is a global leader in materials engineering solutions used to produce virtually every new chip and advanced display in the world. We design, build and service cutting-edge equipment that helps our customers manufacture display and semiconductor chips – the brains of devices we use every day. As the foundation of the global electronics industry, Applied enables the exciting technologies that literally connect our world – like AI and IoT. If you want to push the boundaries of materials science and engineering to create next generation technology, join us to deliver material innovation that changes the world.  What We Offer Location: Hangzhou,CHN You’ll benefit from a supportive work culture that encourages you to learn, develop, and grow your career as you take on challenges and drive innovative solutions for our customers. We empower our team to push the boundaries of what is possible—while learning every day in a supportive leading global company. Visit our Careers website to learn more.  At Applied Materials, we care about the health and wellbeing of our employees. We’re committed to providing programs and support that encourage personal and professional growth and care for you at work, at home, or wherever you may go. Learn more about our benefits .      As a Software Engineer at Applied Materials, you’ll dive deep into ground-breaking technologies—like machine learning and AI—to craft novel software solutions that solve our customers’ high-value problems. Our Software Engineers are responsible for designing, prototyping, developing, and debugging software solutions for semiconductor equipment components and devices to ensure quality and functionality. You'll develop software documentation and test procedures, troubleshoot software problems, and communicate with internal customers to understand project requirements. As part of our team, you'll contribute your expertise in intricate systems, deciphering code, and anticipating software behaviors to ensure Applied remains the leader in the semiconductor and display sectors.     Key Responsibilities Design, develop, test, and maintain backend services, APIs, data models, and integration layers. Build reliable backend capabilities for web application workflows, including request handling, validation, persistence, error handling, and service orchestration. Collaborate with frontend engineers to define clear and maintainable frontend/backend contracts. Work with product, QA, infrastructure, and architecture partners to translate requirements into backend solutions. Evaluate technical alternatives, make pragmatic design decisions, and document important trade-offs. Troubleshoot complex issues across application, data, integration, runtime, and environment boundaries. Write unit tests, integration tests, and validation utilities to improve backend quality. Conduct code reviews focused on API design, modularity, testability, maintainability, and operational risk. Support CI/CD, deployment readiness, logging, monitoring, and production support practices where applicable. Mentor junior engineers through code reviews, design discussions, documentation, and technical sharing. Required Qualifications Bachelor’s degree or above in Computer Science, Software Engineering, Electrical Engineering, Automation, Applied Mathematics, or a related field. 7+ years of relevant software engineering experience. Strong hands-on backend development experience using Python or similar programming languages. Experience designing and implementing RESTful APIs or backend services for production applications. Solid understanding of object-oriented programming, modular design, clean code, and maintainable architecture. Experience with Docker, Kubernetes, Linux, cloud platforms, observability, logging, monitoring, or scalable system design. Experience with relational or NoSQL databases and reliable data access patterns. Experience with unit testing, integration testing, debugging, Git-based workflows, code review, and CI/CD. Ability to analyze requirements, clarify ambiguity, evaluate trade-offs, and deliver solutions independently. Strong communication and collaboration skills across engineering, product, QA, and infrastructure teams. Preferred Qualifications Experience with backend frameworks such as FastAPI, Flask, Django, or similar technologies. Experience building backend services for complex web applications, enterprise applications, engineering software, or data-driven platforms. Experience with API contract design, schema validation, versioning, and backward-compatible API evolution. Experience with asynchronous processing, long-running tasks, workflow orchestration, or distributed systems. Experience with performance profiling, troubleshooting, query optimization, or backend reliability improvements. Experience mentoring engineers or leading backend design discussions. Success Profile A strong candidate is more than a backend implementer. They can take ownership of backend features from design through delivery, keep APIs understandable as requirements evolve, and improve the reliability, testability, and maintainability of the backend codebase. They balance delivery with long-term engineering quality, know when to introduce abstraction and when to keep things simple, and help the team make better technical decisions through hands-on contribution. Core Competencies Backend ownership API design judgment System thinking Engineering quality Problem solving Architecture pragmatism Cross-functional collaboration Technical mentorship Additional Information Time Type: Full time Employee Type: Assignee / Regular Travel: Yes, 20% of the Time Relocation Eligible: Yes Applied Materials is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, national origin, citizenship, ancestry, religion, creed, sex, sexual orientation, gender identity, age, disability, veteran or military status, or any other basis prohibited by law.