Manusai

Backend Engineer

Singapore, Singapore, SingaporeFull timePosted about 2 months ago
Apply on Manusai →Sign in to save this role

Sign in to see who you know at Manusai.

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 ma...

Read the full posting on Manusai →