We are looking for a Senior Backend Engineer to design, build, and scale the core of our platform.
You will own the APIs and real-time services that connect POS systems, kitchens, and back-office operations across multiple stores. You will contribute to architectural decisions, ensure high performance and system stability, and help us scale our SaaS platform efficiently.
Key Responsibilities
- Design, build, and maintain high-performance RESTful APIs using Node.js and Express.js.
- Develop and optimize real-time order flows between POS, KDS, and back-office using Socket.IO.
- Model, optimize, and maintain data across SQL and MongoDB databases.
- Build asynchronous/background processing systems with Redis and Bull queues.
- Manage deployments and infrastructure using Docker and Docker Compose.
- Integrate third-party services such as payment gateways, messaging, invoicing systems, and hardware devices (receipt printers, etc.).
- Drive the design of multi-store and multi-tenant SaaS architectures.
- Ensure data integrity, security, scalability, and system performance.
- Review code, mentor engineers, and establish backend development standards.
- Take ownership of features from design to production and ongoing maintenance.
What We’re Looking For
- 5+ years of experience building production-grade backend systems.
- Strong expertise in Node.js and Express.js.
- Excellent knowledge of relational databases (SQL), including:
- Schema design
- Joins and query optimization
- Performance tuning
- Strong experience with MongoDB and Mongoose, including:
- Schema design
- Indexing
- Aggregation pipelines
- Performance optimization
- Hands-on experience with real-time systems using WebSockets / Socket.IO.
- Experience with Redis and queue/job processing systems such as Bull.
- Comfortable deploying and operating services in production with Docker.
- Strong understanding of authentication and security mechanisms (JWT, sessions, API keys).
- Experience designing multi-tenant SaaS architectures.
- Strong ownership mindset and ability to independently drive projects to completion.
Why Join Caisse Manager?
- Work on a product that has real, daily impact in live restaurants and retail stores.
- Own meaningful parts of the architecture and technical roadmap.
- Solve challenging scalability and real-time performance problems.
- Be part of a growing SaaS company expanding across Morocco.
- Collaborate in a dynamic, product-driven, and innovative environment.
