Senior Back End Engineer (Enterprise Efficiency) - Sea Labs

Sea; Jakarta Pusat; On-site; IDR 300,000,000 - 600,000,000; Full time

Job summary

Sea Labs Indonesia in Jakarta is seeking a senior backend engineer to design, build, and maintain scalable services powering Sea's platforms. You will work with distributed systems, microservices, and AI-enabled features across Shopee's ecosystem.

You will mentor teammates, review code, and collaborate with product, frontend, and QA, integrating AI tools and ensuring robust deployment through CI/CD in a cloud environment.

Qualifications

• 5+ years of backend development experience (Java, Go, or Python preferred).
• Strong distributed systems, microservices, and API design knowledge.
• Experience with MySQL/PostgreSQL and Redis caching.
• Solid CI/CD, automated testing, and deployment practices.
• Ability to perform constructive code reviews and improve code quality.
• Proficiency with AI-assisted development tools to accelerate work.
• Hands-on with containerization (Docker, Kubernetes) and cloud platforms.
• Experience with event-driven architectures and messaging systems.

Responsibilities

• Design and implement reliable, scalable backend systems.
• Write clean, maintainable code using engineering best practices.
• Collaborate with product managers, frontend engineers, and QA teams.
• Lead technical design discussions and produce design documents.
• Conduct constructive code reviews to improve team quality.
• Integrate AI/LLM capabilities into backend services where applicable.
• Mentor junior and mid-level engineers through reviews and pairing.
• Identify technical debt and performance bottlenecks, driving fixes.
• Communicate constraints and trade-offs clearly to stakeholders.

Skills

Backend development

Distributed systems

API design

CI/CD

Testable code

Code reviews

AI-assisted development

Relational databases

Caching (Redis)

Docker/Kubernetes

Cloud platforms

Event-driven architecture

Tools

GitHub Copilot

ChatGPT

Claude

Docker

Kubernetes

Kafka

RabbitMQ

Job description

About the Team:

About Sea Labs Indonesia

Sea Labs is at the core of the Sea platforms development, supporting diverse business lines from e-commerce, supply chain, games, payment, and finance, among many others. The strong growth and unique positioning of Sea's e-commerce business, Shopee, spurred the launch of Sea Labs Indonesia. Since its inception, the group of passionate engineers has charted the course to drive the best experience for our users in Indonesia, many of which solutions are even adapted to other markets in the region.

Sea's hyper-growing business scale has transformed most "innocent" problems into huge technical challenges, and there is no better place to experience world-class projects first-hand if you love technologies as much as we do. Together with our passionate and driven teams, you'll get to develop your skills, build on industry knowledge, and collaborate with global teams in a dynamic space. Browse our Sea Labs Indonesia team openings to see how you can make an impact with us.

About Team

The Enterprise Efficiency team is dedicated to transforming workplace productivity through seamless integration of enterprise communication, open platform capabilities, and management systems covering HR, finance, and operational tools. Our products power the daily workflows of thousands of employees across Sea group companies.

Our product lines include SeaTalk (enterprise communication and collaboration platform) and PFMS (people and financial management system). We are currently driving enterprise initiatives where we actively leverage AI-powered tools and LLM integrations to enhance product capabilities and accelerate engineering workflows.

Job Description:

• Design and implement reliable, performant, and scalable backend systems.
• Write high-quality, clean, and maintainable code using engineering best practices.
• Collaborate with product managers, frontend engineers, and QA teams across the full development lifecycle.
• Lead technical design discussions and produce thorough technical design documents.
• Conduct constructive code reviews that improve team-wide code quality.
• Integrate AI/LLM capabilities into backend services where applicable, including prompt engineering, API integration, and output handling.
• Mentor junior and mid-level engineers through code reviews, pair programming, and knowledge sharing.
• Proactively identify technical debt, performance bottlenecks, and reliability issues – then drive solutions.
• Communicate technical constraints and trade-offs clearly to non-technical stakeholders.

Requirements:

• 5+ years of backend development experience (Java, Go, or Python preferred)
• Strong understanding of distributed systems, microservices architecture, and API design
• Proven ability to produce well-structured, maintainable, and testable code with minimal defects
• Experience with relational databases (MySQL/PostgreSQL) and caching layers (Redis)
• Solid understanding of CI/CD pipelines, automated testing, and deployment best practices
• Able to perform thorough, constructive code reviews that improve team code quality
• Proficient in using AI-assisted development tools (e.g., GitHub Copilot, ChatGPT, Claude) to accelerate coding, debugging, testing, and documentation workflows
• General AI literacy – understands core AI/LLM concepts and can evaluate where AI capabilities can be practically applied to improve product features or engineering processes
• Experience with message queues (Kafka, RabbitMQ) and event-driven architecture
• Familiarity with containerization (Docker, Kubernetes) and cloud platforms (AWS/GCP)
• Hands-on experience integrating AI/LLM APIs into backend services (e.g., prompt engineering, API integration, output parsing)

Nice-to-Have Technical Skills

• Experience building enterprise B2B or internal tooling products (e.g., ERP, communication platforms)
• Performance tuning and optimization experience at scale