Full Stack Developer

3 days ago

Jakarta, Jakarta, Indonesia SATURDAYS Full time
SATURDAYS Indonesia is a growing retail & lifestyle brand operating an omni-channel business with strong warehouse-driven operations. Our technology team plays a critical role in supporting real-world retail execution — from Warehouse Management Systems (WMS) and Point of Sale (POS) to E-Commerce platforms that must be reliable, performant, and operationally sound. You will be joining a small and lean engineering team, reporting directly to the Head of Tech, where individual ownership and engineering maturity matter more than titles.

The Role
We are looking for a Mid / Senior Full-stack Developer who is comfortable working on system-heavy, production-critical applications. This role is hands-on and execution-focused, ideal for engineers who understand how software behaves in real retail and warehouse environments.

This is a contract position, based in Jakarta with a hybrid working arrangement.

Responsibilities
  • Design, develop, and maintain full-stack applications supporting retail operations
  • Build and optimize REST APIs with strong focus on performance, scalability, and bandwidth efficiency
  • Apply clean Object-Oriented Programming (OOP) principles and maintainable system architecture
  • Develop and enhance systems related to Warehouse Management (WMS), Point of Sale (POS), and E-Commerce flows
  • Work closely with operations, product, and tech stakeholders in a fast-moving environment
  • Ensure system reliability, observability, and operational readiness in production
  • Participate in troubleshooting, performance tuning, and incident resolution when needed
Security & Architecture Expectations
  • Practical understanding of security design across WMS, POS, and E-Commerce systems
  • Familiarity with authentication, authorization, data integrity, and API security concepts
  • Ability to make sound technical decisions independently, without heavy supervision
Requirements
  • Mid-level to Senior-level experience as a Full-stack Developer
  • Strong proficiency in , TypeScript, and REST API design
  • Solid experience with relational databases (PostgreSQL, MySQL, or MariaDB)
  • Production experience using React and
  • Familiarity with Docker-based development, GitHub, and CI/CD pipelines
  • Comfortable working in lean teams with high ownership and accountability
Preferred Qualifications
  • Experience in Retail, Warehouse, Logistics, or inventory-heavy systems
  • Prior exposure to WMS, POS, or E-Commerce backend systems
  • Mandarin proficiency (spoken or written) is a strong advantage
Work Arrangement & Language
  • Location: Jakarta (Hybrid)
  • Employment Type: Contract
  • Language: English is the primary working language; Mandarin is highly preferred

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