Staff System Engineer

The role

You will design and develop responsive applications, scalable APIs, and domain-specific AI models. You will drive performance, reliability, and automation across frontend, backend, cloud, and infrastructure domains.

What you will do

• Build and maintain modern, responsive, and high-performance agentic operations platform.
• Design, develop, and optimize small language models for domain-specific and enterprise applications.
• Fine-tune SLMs to improve accuracy, performance, and task-specific capabilities.
• Optimize models for low-latency inference and edge deployments.
• Develop inference pipelines and evaluate model performance across various environments.
• Monitor, benchmark, and improve model efficiency, accuracy, and scalability.
• Maintain documentation, experiment tracking, and model governance practices.
• Build scalable RESTful APIs and backend services.
• Design and maintain relational/NoSQL databases.
• Implement security, authentication, and authorization logic.

Required qualifications

• Bachelor’s degree or Master's degree with 7+ years of total experience
• Strong Python, React.js, NodeJS, NextJS, skills with component lifecycle, hooks, and state management
• HTML5, CSS3, JavaScript (ES6+), and modern frameworks (e.g., Tailwind, SCSS)
• Git, REST APIs, Webpack, and CI/CD pipelines
• Strong grasp of API design, data modelling, and error handling
• Experience with monitoring tools (Prometheus, Grafana)
• Expertise in Ansible, Terraform and shell scripting
• Proficient in PostgreSQL, MySQL, or MongoDB

Nice to have

• Good understanding of CI/CD, configuration management, and cloud platforms like AWS.
• Familiarity with message brokers (RabbitMQ, Kafka)
• Experience with Docker, Git, and API tools

About the company

Coupang is an e-commerce company that aims to make shopping, eating, and living easier. It is a fast-growing company with a startup culture and the resources of a large global public company.