Senior Real-Time Backend Engineer

Nucs AI; Paris; Sur place; EUR 110 000 - 160 000; Plein temps

Avantages offerts par ce poste

Health insurance

Profit-sharing

Employee incentive scheme

Résumé du poste

Nucs AI in Paris, France, seeks a Senior Backend Developer to build and operate the backend services behind a real-time gaming platform. You will design scalable microservices in Node.js, implement a high-throughput communication gateway, and ensure reliability under peak load.

Join a team focused on performance, data consistency, and on-site collaboration across frontend, data, and security teams. A Master’s degree or equivalent is expected, with fluency in English and French advantageous.

Qualifications

• 5+ years of experience building and operating backend services in production.
• Strong experience with server-side JavaScript and Node.js
• Experience developing services that handle high request or message volumes
• Good understanding of high availability, load distribution, scalability, and caching
• Experience designing microservices and event-driven architectures
• Strong knowledge of asynchronous messaging systems and in-memory data structures
• Experience with relational data modelling and complex query optimisation
• Understanding of transactions, concurrency, locking, and data consistency
• Practical experience with automated unit, functional, integration, and load testing
• Knowledge of containers, continuous deployment pipelines, and monitoring tools
• Ability to investigate performance and production issues across multiple technical layers
• A Master's degree or equivalent technical background

Responsabilités

• Designing highly available backend architecture for a real-time transactional platform
• Building and maintaining scalable microservices using server-side JavaScript
• Developing APIs and data models used by the platform's core services
• Contributing to a communication gateway handling authentication, flow control, routing, and asynchronous messaging
• Developing user registration services capable of absorbing significant traffic peaks
• Adding new functionality and mechanics to the platform's core engine
• Improving application performance, scalability, and resource usage
• Designing automated unit, functional, integration, and load tests
• Reviewing code and contributing to shared engineering standards
• Deploying services on managed cloud infrastructure
• Implementing monitoring and investigating production performance
• Maintaining technical and architectural documentation
• Working with frontend, data, infrastructure, security, and project teams

Connaissances

Node.js

Backend architecture

Microservices

Event-driven

Relational databases

Query optimisation

Caching

Automated testing

Monitoring tools

Performance analysis

Formation

Master's degree

Outils

Docker

Kubernetes

Cloud platforms

Description du poste

Nucs AI in Paris, France, seeks a Senior Backend Developer to build and operate the backend services behind a real-time gaming platform. You will design scalable microservices in Node.js, implement a high-throughput communication gateway, and ensure reliability under peak load.

Join a team focused on performance, data consistency, and on-site collaboration across frontend, data, and security teams. A Master’s degree or equivalent is expected, with fluency in English and French advantageous.