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Onyx-Conseil

293 jobs

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293 jobs Posted Sort

Senior FinTech Fullstack Engineer: Lead iOS/Android & Web

Senior fullstack engineer leading the technical side of Onyx-Conseil's fintech team in London, delivering high-performance iOS, Android and web apps and driving architecture, code quality and releases in an agile setting. Core stack: React, Angular, Swift/Objective-C, Java, Rails and Node.js.

Agile Angular Fintech Java Node.js +4 skills

Frontend Full Stack Developer with C# SQL Server

Full stack software engineer (2-4 years) building and optimizing customer-facing webstores and personalization tools, including a one-click photobook experience, for a client in West London. Core stack is C#, ASP.NET MVC, JavaScript, Knockout, Bootstrap and MS SQL Server, working in Agile/Scrum with Git and Jira. Salary £30K-£40K.

Agile AJAX Angular Automation Bitbucket +18 skills

Liferay with Java Developer - Surrey

Permanent Java developer role in Redhill, Surrey, building Java Enterprise portal applications using Liferay (and WebSphere Portal). The developer works in Agile teams, delivers client-facing projects on deadline, and may lead teams of varying sizes. Requires 2-5 years of J2EE experience.

Agile J2EE Java

Senior Fullstack Java Developer

Senior fullstack developer (5-7+ years) to technically lead an agile team building a next-generation high-performance app for a fast-growing fintech client in the City of London. Work spans native iOS/Android (React, Swift/Obj-C, Java) and web development (Rails, Node.js, Angular), with FIX Protocol/trading experience a plus.

Agile Android Angular Eclipse Git +9 skills

Lead Data Engineer: Architect, Mentor & Client Solutions

Onyx-Conseil, a consulting firm, seeks a Tech Lead Data Engineer to design and deliver robust data solutions for clients — covering data access, quality, industrialization, supervision and integration — while writing development standards, mentoring junior consultants and supporting pre-sales efforts.

Tech Lead Data Engineer H/F

Tech Lead Data Engineer at consulting firm Onyx-Conseil in Levallois-Perret, France: design and industrialize data solutions (access, quality, supervision), set development standards, and mentor junior consultants while pitching data architectures to clients and supporting pre-sales.

Full-Stack & Ops Engineer – WMS & Data Pipelines

A full-stack and ops engineer in Lille modernizes a WMS and manages critical data flows, working in Agile on the back-end, ETL pipelines, and a supervision interface, with emphasis on quality and security. Core stack: Java/Spring Boot, PostgreSQL, Kafka, GCP and BigQuery.

Agile BigQuery CI/CD ETL Flux +5 skills

Senior Data Engineer: Big Data, Spark & Cloud Platforms

Onyx-Conseil recherche un ingénieur Data & Digital pour développer et industrialiser des solutions Big Data à forte volumétrie dans un environnement innovant, reposant sur des plateformes Cloud et Big Data. Vous…

BDD Cloud Hadoop Java Spark +2 skills

Data Engineer Senior Big Data & Cloud (IT) / Freelance

EuropeContractSenior

Au sein d'une équipe Data & Digital, vous intervenez sur le développement et l'industrialisation de solutions Big Data à forte volumétrie dans un environnement exigeant et innovant. Vous contribuerez à la…

API AWS Azure Bash BDD +12 skills

Ingénieur DevOps - Platforms & CI/CD (Toulouse, 2-3j/sem)

On-site DevOps engineer in Toulouse (2-3 days/week) who builds and maintains API exposure platforms (API Manager/Gateway/Portal), automates containerized infrastructure with OpenShift, Helm, Argo CD and Terraform, and industrializes CI/CD pipelines with Jenkins, Bitbucket and Maven, including Java/Groovy development.

API Bitbucket CI/CD DevOps Groovy +6 skills

Ingénieur Devops (IT) / Freelance

Freelance DevOps engineer on-site in Toulouse (2-3 remote days/week) building API exposure platforms (API Manager/Gateway/Portal). Day to day: automating containerized infrastructure with OpenShift, Helm, Argo CD and Terraform, running CI pipelines (Jenkins, BitBucket, Maven, Sonar, XLDeploy, Python) and writing Java/Groovy policies, plus supporting platform operators and service publishers.

API Bitbucket DevOps Groovy Helm +6 skills

Lead Dev / Développeur Senior Full Stack Java / Angular

A senior full-stack Java/Angular developer hired through Onyx-Conseil to join a client's development team in Nantes as Lead Dev. Day to day: designing technical solutions, building the most complex front-end and back-end features, enforcing code quality and unit tests, mentoring developers, writing technical docs, and contributing to containerization and production releases.

Développeur Full-Stack + ops H/F (IT) / Freelance

Freelance full-stack/back-end developer with ops skills to support a 7-year rollout of the Manhattan Active WMS across 50 warehouses. Day to day: build ETL integration pipelines and a supervision/support tool using Java, Spring Boot, PostgreSQL, Vue.js, Kafka and GCP, plus CI/CD, Datadog monitoring and HashiCorp Vault/Consul administration.

Agile BigQuery CI/CD Datadog DevOps +10 skills

Développeur full-stack Javascript (H/F) (IT) / Freelance

Freelance full-stack JavaScript developer working on-site (régie) at a growing client in Lille, building and maintaining the client's internal back-office platform and structuring/exposing database data so business teams can use it, in a product-oriented environment.

Développeur Full-Stack JavaScript — Back-Office & Données

A full-stack JavaScript developer hired for an on-site (régie) mission at Onyx-Conseil's client in Lille: they design and maintain the internal back-office, integrate and deploy features, and organize/expose database data so business teams and stakeholders can use it directly.

Data Scientist/AI Engineer (domaine de la finance) - (h/f) (IT) / Freelance

Freelance 12-month Data Scientist/AI Engineer mission (starting Sept 2026) in the finance domain: build predictive applications, intelligent document processing (OCR/parsing/extraction), run POC phases, and industrialize AI solutions. Core stack is Python and GCP with machine learning and generative AI (LLMs, RAG), 3 days/week on-site in Roissy CDG, English used daily.

Cloud GCP LLM Machine Learning Python

Data Engineer (H/F)

Dans le cadre du renforcement d'une équipe Data, nous recherchons un(e) Data Engineer pour intervenir sur une plateforme Data à fort volume, au sein d'un environnement international et orienté produit. Vous…

Agile Airflow Analytics AWS CI/CD +17 skills

Ingénieur Devops (IT) / Freelance

Périmètre technique Ansible - maîtrise requise ; AWX / Ansible Workflow Automation est un fort plus Python : scripting, développement d'APIs et de petites applications Terraform, Bash / Shell, PowerShell CI/CD :…

Agile Ansible API Automation AWS +16 skills

Développeur full stack Java/Angular/Node (H/F) (IT) / Freelance

Basée à Lille, Lyon, Nantes, Grenoble, Marseille, Paris et Bruxelles, Insitoo Freelances est une société du groupe Insitoo, spécialisée dans le placement et le sourcing des Freelances IT et Métier. Depuis 2007, Insitoo…

Angular Docker Helm Java Kafka +2 skills

Hybrid Junior Data Engineer – Sports Tech & Data

Onyx-Conseil in London is seeking a Junior Data Engineer to join our tech-driven team with a hybrid work pattern (2 days in-office). You will develop software across Python, Go and TypeScript, process live and…

Cloud Python SQL TypeScript