Backend Engineer

We're seeking a skilled Backend Engineer to join our growing team and drive the development of Manus's core infrastructure and business systems. This role offers the opportunity to work across two specialized tracks: infrastructure engineering and business application development, allowing you to shape both the technical foundation and user-facing features of our AI-powered platform.

Key Responsibilities

Core Backend Development

• Build high-performance, scalable backend services using Golang to support core AI product features

• Design, develop, and optimize APIs (RESTful and GraphQL) ensuring efficient frontend-backend interactions

• Participate in system architecture design to ensure stability, reliability, and scalability at enterprise scale

• Handle large-scale data flows and optimize distributed systems for peak performance

• Collaborate closely with frontend and AI agent teams to support rapid product iteration cycles

• Write clean, maintainable, and well-documented code following industry best practices

Infrastructure Track (Option A)

Middleware & Core Systems Management

• Maintain and optimize Manus's foundational middleware stack including databases, caching layers, logging systems, and message queues

• Design and manage Kubernetes cluster architecture for optimal resource utilization and fault tolerance

• Implement monitoring, alerting, and observability solutions across all infrastructure components

• Ensure high availability and disaster recovery capabilities for mission-critical systems

E2B Cluster Operations

• Oversee maintenance, configuration, and enhancement of Manus's E2B cluster infrastructure

• Drive capacity planning and scaling initiatives to meet growing demand

• Implement cost optimization strategies while maintaining performance standards

• Collaborate with DevOps teams to streamline deployment and operational workflows

Business Systems Track (Option B)

Core Business Development

• Develop and maintain user management systems, authentication, and authorization frameworks

• Build integrations with marketing automation platforms and operational tools

• Create robust APIs for customer onboarding, engagement tracking, and lifecycle management

• Implement analytics and reporting systems for business intelligence

Payment & Monetization Platform

• Design and develop comprehensive payment processing systems with multiple gateway integrations

• Build credit and points management systems with real-time balance tracking

• Implement coupon, discount, and promotional campaign management features

• Develop membership and subscription management capabilities with automated billing

• Ensure PCI compliance and implement fraud detection mechanisms

Required Qualifications

• Bachelor's degree or higher in Computer Science, Software Engineering, or related technical field

• Minimum 3 years of backend development experience with demonstrated expertise in Golang

• Strong understanding of microservices architecture and service orchestration tools (gRPC, Kubernetes)

• Proficiency in database design, optimization, and management (MySQL, PostgreSQL, MongoDB)

• Hands-on experience with distributed systems, message queues (Kafka, RabbitMQ), and caching technologies (Redis)

• Solid understanding of cloud platforms (AWS, GCP, or Azure) and containerization technologies

• Experience with CI/CD pipelines and infrastructure-as-code practices

• Strong problem-solving abilities and passion for learning new technologies

Preferred Qualifications

• Previous experience in backend development for AI, ML, or SaaS products

• Experience with payment processing systems, financial transactions, or fintech applications

• Knowledge of infrastructure monitoring tools (Prometheus, Grafana, ELK stack)

• Familiarity with security best practices and compliance frameworks

• Experience working in international, distributed teams

• Contributions to open-source projects or technical community involvement

• Experience with performance optimization and large-scale system design

What We Offer

• Opportunity to work on cutting-edge AI technology with real-world impact

• Choice between infrastructure and business systems specialization based on your interests

• Collaborative, learning-focused environment with opportunities for professional growth

• Access to the latest tools, technologies, and professional development resources

About Manus AI

Manus is a general AI agent that bridges minds and actions: it doesn't just think, it delivers results. Manus excels at various tasks in work and life, getting everything done while you rest. At Manus AI, we offer a highly collaborative and innovative environment where experts across engineering, research, and business come together to push the boundaries of AI applications. If you're passionate about cutting-edge technology and making a real impact, we’d love to hear from you!

Contact us: recruiting@manus.im