BACKEND DEVELOPER Node.js/Java

Keoni; Paris; Ibrido; EUR 55.000 - 85.000; Tempo pieno

Descrizione del lavoro

Keoni is seeking a Backend Developer with strong experience in Node.js (Express.js, NestJS) and Java Spring to design and maintain scalable RESTful APIs. Proficiency with relational and NoSQL databases, API standards (OpenAPI/Swagger, GraphQL), and containerization (Docker, Kubernetes basics) is essential.

Familiarity with CI/CD pipelines, security practices, and observability will help drive robust services.

Competenze

• Proficiency in backend frameworks: Node.js (Express.js, NestJS), Java Spring, Django, Python.
• Strong knowledge of relational databases and ORMs (PostgreSQL, MariaDB) and NoSQL databases (MongoDB, Redis, Elasticsearch, InfluxDB).
• Experience designing RESTful APIs with OpenAPI/Swagger and/or GraphQL.
• Docker containers with Docker Compose; basic Kubernetes for orchestration.
• Knowledge of code quality tools (SonarQube, etc.).
• Log management (ELK stack, Graylog) and monitoring (Prometheus, Grafana).
• CI/CD integration with GitLab CI or Jenkins.
• Knowledge of DevOps, GitOps, or SRE practices is a plus.
• Application security: OWASP Top 10, authentication/authorization (OAuth2, OpenID Connect).

Conoscenze

RESTful APIs

OpenAPI/Swagger

GraphQL

CI/CD

DevOps practices

Strumenti

Node.js

Express.js

NestJS

Java Spring

Django

Python

PostgreSQL

MariaDB

MongoDB

Redis

Elasticsearch

InfluxDB

Docker

Kubernetes

OpenAPI

GraphQL

Descrizione del lavoro

# BACKEND DEVELOPER Node.js/Java* BACKEND DEVELOPER Node.js/JavaPROFILES & Technical Requirements: • Proficiency in backend frameworks: Node.js (Express.js, NestJS), Java Spring, Django, Python (see introduction). • Good knowledge of relational databases and ORMs (PostgreSQL, MariaDB) and NoSQL databases (MongoDB, Redis, Elasticsearch, InfluxDB). • Experience in designing and implementing RESTful APIs: Use of standards such as OpenAPI (Swagger) and/or GraphQL. • Proficiency in Docker containers, use of Docker Compose, Kubernetes (basics) to orchestrate services. • Knowledge of code quality tools (SonarQube, etc.). • Log management (ELK stack, Graylog) and monitoring (Prometheus, Grafana) and exception handling. • Integration into CI/CD pipelines with GitLab CI or Jenkins. • Knowledge of DevOps, GitOps, or SRE practices is a plus • Application security: OWASP Top 10, authentication (OAuth2, OpenID Connect), authorization, secrets management.**Work location:** Europe