Senior Backend Engineer (Node.js)

About the role

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.

Key responsibilities

• Design, build, and maintain high‑performance RESTful APIs using Node.js and Express.js.
• Develop and optimise real‑time order flows between POS, KDS, and back‑office using Socket.IO.
• Model, optimise, 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.
• 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.

Required profile

• 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, query optimisation and performance tuning.
• Strong experience with MongoDB and Mongoose, including schema design, indexing, aggregation pipelines and performance optimisation.
• 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.

Required skills

• Node.js
• Express.js
• SQL (relational databases)
• MongoDB & Mongoose
• Socket.IO
• Redis
• Bull queue
• Docker & Docker Compose
• JWT, session management, API keys
• Multi‑tenant SaaS architecture design

What we offer

• 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.