Onyx-Conseil

NewBe an early applicant EuropeContractSenior

2 days ago

Senior Fullstack Typescript React & Email Develope (IT) / Freelance

Accessibility API Bash BDD CI/CD +22 skills

Freelance senior full-stack TypeScript developer role based in Lille: build and maintain an email component design system (Maizzle/Tailwind) deployed via Salesforce Marketing Cloud, develop React/Next.js and NestJS apps plus Node.js CLIs, and automate CI/CD pipelines with GitHub Actions, automated testing and security practices.

NewBe an early applicant Europe

2 days ago

Fullstack Java/React Developer – Assurance & Microservices

Onyx-Conseil is recruiting a fullstack Java/React developer to work for one of its insurance-sector clients in Niort, France. The role involves designing, developing, and testing modern business applications built on microservices architectures, with a strong backend and frontend focus.

Java Microservices React

NewBe an early applicant HybridUK

3 days ago

PHP/JS Full-Stack Engineer – Build Core Systems (Hybrid)

JavaScript Laravel PHP React Symfony +1 skills

A full-stack engineer owns backend features for internal systems at a small, profitable fashion distribution business in Bristol, working mainly with PHP (Symfony/Laravel) and JavaScript (Vue/React). Hybrid: about one day per week in the Bristol office, remote the rest of the time.

NewBe an early applicant HybridUKLead

4 days ago

Senior Azure Data Engineer - Lead Greenfield Cloud & Data, Hybrid

Senior Azure Data Engineer at Onyx-Conseil, based in Thatcham (hybrid), owning Azure cloud and data projects end-to-end: designing and building scalable Azure data solutions, APIs and ETL pipelines, while mentoring others in a fast-growing data division.

API Azure Cloud ETL

4 days ago

Senior Azure Data Engineer

Analytics API Azure Cloud Data Engineering +4 skills

Senior Azure Data Engineer joining a fast-growing data team at a research organisation in Thatcham (hybrid). You own greenfield Azure cloud and data projects end to end — designing scalable Azure solutions and building APIs, ETL processes and data pipelines in Python — while mentoring colleagues on Azure best practice.

up to 67K £

Senior Full Stack Developer - Hybrid, Java & Angular

Senior Full Stack Developer building reusable digital services for access-to-justice for a UK Government Department client, on a hybrid basis in London. Day-to-day work centres on Java and Angular development, and UK Security Clearance (or eligibility to obtain it) is required.

Angular Java

Senior Full Stack Developer – Java & Angular

Senior full stack developer at CGI building reusable Java and Angular technology for a UK Government justice department, delivering secure, accessible digital services at scale in a hybrid London role. Requires UK security clearance (or eligibility), with room to explore AI-assisted engineering and shape technical decisions.

AI Angular Java

Senior Data Engineer — Azure Data Platform (Hybrid)

Senior Data Engineer at consultancy Onyx-Conseil in Manchester (hybrid, 3 days/week in office) who owns the full reporting stack — from data acquisition to Azure data platform development — building reliable, scalable data models and Power BI outputs for reporting and analytics.

Analytics Azure Power BI

Senior Data Engineer

API Azure Azure Data Factory Data Engineering Data Pipelines +3 skills

Senior Data Engineer at a digital transformation and project controls consultancy in Manchester (hybrid, 3 days/week in office), building Azure data platforms, pipelines, semantic models and Power BI reporting for major capital programme clients. Core stack: Azure (Data Factory/Fabric/Synapse), SQL, Python, Power BI/DAX.

80K – 90K £

Data Engineer Python / Airflow – Lyon

Agile Airflow Flux Python

Onyx-Conseil is hiring a Data Engineer in Lyon to join a team working in the energy sector: taking over and improving existing data flows, migrating them to Apache Airflow, and refactoring processing in Python, with a focus on monitoring, reliability, logging/retries, and Agile collaboration.

Data Engineer Python & Airflow — Pipelines Fiables

Agile Airflow Flux Python

Data Engineer in Lyon joining an energy-focused team: you take over, analyze and improve existing data flows, strengthen pipeline monitoring and reliability, and help migrate to Apache Airflow while building Python data processing, all in an Agile environment.

Développeur full stack React Django CDI (full remote possible)

CRM Django Grafana Mistral React +1 skills

Full stack developer (Django/React) building and maintaining Zenith App, the in-house recruitment platform (CRM + upcoming ATS) of an IT recruitment firm. Expect ~80% back-end feature development, 20% maintenance, plus code reviews and technical-debt reduction using Django REST, React/MUI, Cloudflare and Scaleway.

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

EuropeContractLead

API BigQuery CI/CD Cloud Data Engineering +8 skills

Freelance Lead Data Engineer role with Onyx-Conseil for a major luxury & cosmetics client in France. Day to day involves designing robust, scalable GCP data pipelines and data models, writing and optimizing complex BigQuery SQL, and integrating BI (Power BI/Looker) and AI solutions using Python, Terraform, Cloud Workflows, Cloud Build and Apigee.

Data Engineer - Expert Oracle

Apex Oracle Power BI Python SQL

Data engineer in Paris providing expert-level Oracle database support: building and maintaining data-analysis infrastructure, deploying and securing data pipelines, and exposing data for analysts/scientists using SQL, Python and BI tools in a corporate & investment banking (CIB) environment. Power BI and Oracle APEX front-end skills are a plus.

Senior Oracle Data Engineer & BI Pipelines Expert

EuropeSenior

Apex Oracle Power BI Python SQL

Onyx-Conseil is hiring a senior data engineer in Paris to support data analysis and engineering: deploying BI/data pipelines and improving data architecture using Oracle, SQL, Python, Oracle APEX, and Power BI. Knowledge of the corporate & investment banking (CIB) environment is a plus.

Lead Data Engineer (GCP) - Data Pipelines & BI Expert

EuropeLead

API BigQuery CI/CD Cloud Flux +4 skills

Lead Data Engineer designing and optimizing robust, scalable data pipelines for a major luxury and cosmetics client in Île-de-France, integrating data via APIs, databases and cloud-to-cloud, and driving analytical flows with BigQuery, CI/CD and IaaS to feed Power BI and Looker.

Ingénieur / Intégrateur DevOps CI/CD (H/F) - Caen

Bash CI/CD DevOps Flux Gatling +2 skills

Confirmed DevOps engineer (permanent contract at ESN Jarvis Connect) on a long-term on-site mission for a large client in Caen: maintaining and improving existing CI/CD pipelines (mainly Jenkins), reviving a neglected Gatling performance test suite, automating with Bash/Python, and operating VTOM/CFT scheduling and file-transfer chains. On-site 2-3 days/week after onboarding.

42K – 48K €

Lead Développeur Full Stack React/Python – Data & IA

EuropeLead

Analytics Data Visualization Python

Onyx-Conseil is hiring a senior full stack developer (8+ years of experience) in Paris to design and build modern web applications with advanced data visualization, analytics and AI features, owning development end to end from the Python backend to frontend interface design.

Développeur Full Stack Senior React / Python – Data & IA (H/F) (IT) / Freelance

EuropeContractSenior