Backend Engineer (AI-Native Application Development)

About the role

Manus is looking for a Backend Engineer to own user-facing application features and backend services end to end, from understanding requirements and designing solutions through frontend and backend development, rollout and ongoing iteration, driving development in an AI-native way. The role is based in Beijing or Singapore.

Key responsibilities

• Independently own user-facing application features end to end, from requirements and technical design through development, testing, rollout and continuous iteration.
• Design and build backend services and APIs, improving data access, service communication and engineering practices so systems stay reliable and scalable.
• Identify business opportunities with an AI-native mindset and drive adoption of Agent and LLM capabilities in the product.
• Optimize performance and build stability for high-concurrency scenarios, and strengthen system security and observability.

Required profile

• Solid computer science fundamentals, including data structures, algorithms and system design; a CS-related degree or equivalent practical experience.
• Experience developing backend applications delivered to production, with strong attention to code quality and engineering practices.
• Ability to collaborate on technical work in Mandarin and to communicate in English.

Required skills

• Backend development with Go, Python, Node.js or a similar stack.
• Familiarity with Protocol Buffers and common RPC frameworks, API design and error handling.
• Data storage and caching (MySQL, Redis), data modeling, indexing, transactions and performance tuning.
• High-concurrency system design, message queues, caching, asynchronous processing, concurrency control and rate limiting.
• Kubernetes and containerized deployment.
• Agent development and LLM application workflows.
• Basic testing and production troubleshooting using logs and metrics.
• Preferred: distributed tracing, monitoring, alerting, CI/CD, end-to-end AI product delivery, open-source or personal projects, and a technical blog.

What we offer

• Work with a fast-paced team turning frontier AI breakthroughs into real-world impact.
• Share incentive plan with equity participation.
• Unlimited Manus tokens for experimentation and productivity.