Backend Engineer - Infrastructure & Business Systems

Manus AI; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

An innovative AI company in Singapore is seeking a skilled Backend Engineer to develop Manus's core infrastructure and business systems. This role offers specialization in infrastructure or business application development. Candidates should have at least 3 years experience with Golang and a strong grasp of microservices architecture. A collaborative environment focused on AI technology awaits the right individual.

Benefits

Access to the latest tools and technology

Professional development resources

Collaborative work environment

Qualifications

• Minimum 3 years of backend development experience with Golang.
• Strong understanding of microservices architecture.
• Hands-on experience with distributed systems and message queues.

Responsibilities

• Build high-performance, scalable backend services using Golang.
• Design and optimize APIs for efficient frontend-backend interactions.
• Collaborate closely with frontend and AI teams.

Skills

Backend Development

Golang

Microservices Architecture

Database Design

Distributed Systems

Problem-solving

Education

Bachelor's degree in Computer Science or related field

Tools

MySQL

PostgreSQL

MongoDB

Kubernetes

AWS

CI/CD

Job description

Overview

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.

Responsibilities

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: [e-mail]