Onyx-Conseil

Développeur Backend Confirmé Python / AWS – H/F

API AWS Cloud Event Driven Architecture IAM

Senior Python/AWS backend developer hired through an ESN to work on a client's high-stakes cloud systems in Le Mans: designing event-driven architectures and REST APIs, hardening distributed systems (resilience, IAM/secrets security, observability), and acting as the development teams' technical reference.

Développeur Backend Senior Python Django et PHP - Saas - Paris (H/F)

API CI/CD Django Flux JavaScript +6 skills

Senior backend developer building features on a legacy PHP core and newer Python/Django microservices for a SaaS platform in Paris, while reviewing code, mentoring developers, tuning SQL, running CI/CD and handling production incidents, with a short-term path to Lead Developer.

Ingénieur Backend Senior - Python/Django & PHP

Django PHP Python SQL TypeScript +1 skills

Onyx-Conseil is hiring a senior backend engineer in Paris to evolve a mixed PHP/Python/Django platform with a Vue.js/TypeScript frontend. Day to day: architecture, code reviews, setting standards, SQL performance tuning, mentoring developers, and operational maintenance, with a short-term path to Lead Developer.

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Lead Développeur Backend Python & AWS

Infotel, ESN spécialisée dans les technologies de l’information, recherche pour l’un de ses clients un Lead Developer Senior / Référent Technique AWS afin d’accompagner ses équipes sur des sujets à forts enjeux…

API AWS Cloud

Senior Fullstack .NET / React Developer — Hybrid

Agile CI/CD C# .NET React

Onyx-Conseil recherche des Développeurs FullStack .NET / ReactJS Seniors pour intervenir chez AXA, client final du secteur assurance. Localisation: Lille ou Nantes, 6 postes ouverts. Mode hybride: 2 jours/semaine sur…

Full-Stack Angular/Java Developer - Platform Migration

Onyx-Conseil recherche un développeur Fullstack pour intervenir sur une migration technologique de Wildfly vers Quarkus. Vous contribuerez à la rédaction des spécifications et au développement des composants du…

Angular Java Quarkus

Un Développeur Frontend Expert sur Chatillon

CI/CD CSS Git HTML Next.js +5 skills

Almatek recherche pour l'un de ses clients Un Développeur Frontend Expert sur Chatillon. Compétences techniques Intégration Web (HTML5 / CSS3 / Responsive) - Expert - Impératif Tailwind CSS - Expert - Impératif…

Développeur Frontend Expert - UI & Design System

Almatek recrute pour l’un de ses clients un Développeur Frontend Expert sur Chatillon. Vous intégrerez les maquettes UI/UX en respectant le pixel‑perfect et le responsive design, et vous développerez des composants…

Tailwind

Product Owner Data Senior – Pipelines et Gouvernance

Confluence Data Engineering Flux Jira User Stories

Senior Data Product Owner based in Lille who structures the product vision for data flows/pipelines, owns and drives the backlog with the Data Engineering team, writes epics and user stories, tracks performance indicators, and runs agile ceremonies. Requires 5-8 years of data PO experience and Jira/Confluence skills.

Data Analyst & Insights Engineer - Niort On-Site

Onyx-Conseil is hiring a data engineer/analyst to work on-site in Niort, embedded in a large insurance client's data team. The role focuses on building and optimizing data platforms and pipelines: preparing data, designing DataMarts with Dataiku and SQL, shaping models and KPIs, and building Tableau reporting.

SQL Tableau

ML Engineer - Data Platform & MLOps in Production

API Data Engineering Data Science Machine Learning MLOps

Onyx-Conseil is hiring an ML Engineer in Paris to bring machine learning models into production. Day to day, the role optimizes data collection and preparation, exposes models via APIs, and monitors model lifecycles in production within a data team spanning data science, data engineering, and MLOps.

Senior Data Architect & Lakehouse Engineer

Onyx-Conseil is hiring a senior data engineer/architect in Paris to modernize a decision-support platform into a Lakehouse architecture. Day to day the person designs, develops, tests and documents data pipelines, industrializes them, and exposes data via Trino and BI tools while working with business and MOA stakeholders.

Lakehouse Trino

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Data Engineer Databricks, PySpark, Python, SQL, Gitlab, Nexus, Terraform Nantes ( 3 à 4 jours TT)/du (IT) / Freelance

Databricks FinOps GitLab PySpark Python +4 skills

Freelance data engineer role (2 openings) based in Nantes with 3–4 days of remote work per week. The engineer designs and builds data use cases on Databricks using PySpark and Python, alongside SQL, GitLab, Nexus and Terraform, handling development through production, N3 support, FINOPS practices and documentation.

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Senior Data Engineer GCP (H/F) (IT) / Freelance

Analytics BigQuery Cloud Data Visualization GCP +1 skills

Freelance senior data engineer mission in Paris: design, build and industrialize GCP data pipelines that reconcile online and offline customer data for commerce use cases, feeding analytics, business KPIs and BI dashboards. Core stack: BigQuery, Cloud Storage, Dataflow, Pub/Sub and Terraform.

Data Engineer Confirmé – Flux de Données & ETL Python

Agile ETL Flux Python Talend

Onyx-Conseil is hiring an experienced Data Engineer in Nantes (on-site) to build and maintain data pipelines, integrating data sources for reporting and analytics. Day-to-day work focuses on ETL development with Talend, Python scripting, and MicroStrategy reporting within an Agile team.

Data Engineer Databricks & DBT sénior (H/F)

CI/CD Cloud Data Warehousing Databricks dbt +3 skills

Senior data engineer designing, building and optimizing data pipelines on Databricks and dbt for a client's data platform in Paris. Daily work spans Spark/PySpark processing, data warehouse/lakehouse modeling, testing and documentation, and CI/CD industrialization, collaborating with analysts, scientists and business teams.

Data Engineer GCP – DatOps & Cloud Modernization

Agile Cloud DevOps GCP Scrum

Onyx-Conseil is hiring a GCP Data Engineer to join a DatOps team embedded in a large international banking group. The role focuses on data ingestion and transformation, automating data pipelines, and continuously improving the data platform, working in an agile SCRUM setting alongside application and DevOps teams.

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Data Engineer / Data Architect Senior H/F (IT) / Freelance

Confluence Dagster Flux Git Jenkins +8 skills

Freelance senior Data Engineer/Data Architect mission in Paris to modernize a BI platform at an employee-savings and retirement firm, migrating it to an S3-based Lakehouse. Day to day: designing the data architecture and building, orchestrating, and monitoring pipelines with Python, Spark/PySpark, Dagster, and Trino.

Data Engineer Teradata — ETL, SQL & Data Platforms