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 Node.js, TypeScript, and REST API design
- Solid experience with relational databases (PostgreSQL, MySQL, or MariaDB)
- Production experience using React and Next.js
- 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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