Find your next tech and IT Job or contract Front-End Developer (JavaScript, Node, React, Angular, Vue...)

The front end developer handles the optimization, ergonomics and navigation of a mobile application or website. Unlike the back end developer who works behind the scenes, the front end developer works directly on the visible interface of the site. Their mission is to ensure that internet users can interact with the site without any constraints and with complete ergonomics. They constantly stay informed about web innovations and developments in order to always deliver trendy and innovative websites. For this, solid training is necessary as well as numerous qualities and skills.

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Apprenticeship

Apprenticeship offerTrainee DevOps Engineer | No experience needed (Ref: 7501)

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Published on
CI/CD
DevOps
Docker

London, England, United Kingdom

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Permanent

Job VacancyDéveloppeur IA MTA

R&S TELECOM
Published on
Microsoft Access

12 months
40k-48k ¤
400-480 ¤
Ile-de-France, France
Contexte de la mission L'équipe MTA (Modélisation et Technologies Avancées) conçoit et industrialise les composants IA utilisés par les métiers. Ses principales missions incluent : Développement des API Développement de chatbots : internes (ex. Jarvis) et externes (assistants métiers). Création d'agents IA : capables d'exécuter des workflows, interagir avec des API, orchestrer des outils, et automatiser des tâches complexes. Intégration avancée des modèles LLM : Mistral, GPT, Claude, etc. Contribution technique aux plateformes transverses : IALAB, IAP, GED/PHX, RPA, etc. Participation aux démonstrations système : sujets chatbots, workflows automatisés, IALAB, etc. Pour soutenir la montée en puissance des usages IA, le client souhaite renforcer l'équipe MTA avec un développeur expérimenté spécialisé en agents IA, orchestration, chatbots avancés et intégrations SI. Objectifs et livrables 1 Développer des agents IA avancés pour les métiers Conception d'agents capables d'appeler des API, déclencher des outils internes, et exécuter des actions complexes. Gestion de scénarios multi-étapes : analyse ® décision ® action ® supervision. Construction de "tooling IA" : actions, connecteurs, permissions, wrappers. Alignement avec les procédures SSI, DPO et gouvernance IA. 2 Conception ou amélioration de chatbots métiers Développement d'assistants IA pour piloter la documentation, les workflows, la qualification documentaire, etc. Implémentation des mécanismes clés : mémoire, récupération d'information, contextualisation. Optimisation UX des interactions : prompts, actions, réponses structurées. Support multi-modèles : Mistral Large, GPT-4o, Claude 3.7, etc. 3 Intégration et orchestration avec le SI Appels sécurisés vers les API internes : ERP, GED, RPA, CRM, PHX, etc. Connexion aux outils d'orchestration existants : RPA, IALAB, pipelines documentaires. Mise en place d'exécuteurs d'outils avec gestion fine des autorisations et logs. 4 Industrialisation et fiabilisation Observabilité complète : logs, métriques, traçabilité, monitoring des coûts. Tests unitaires et end-to-end pour chatbots et agents. Contribution aux frameworks internes : libs maisons, conventions IA. Participation aux démos système, PI planning et increments Agile. Développement Python expert : FastAPI, async, architectures modulaires. Très bonnes bases en Node.js/TypeScript pour certains agents front ou services d'intégration. Développement orienté API-first. Bonne pratique des patterns d'architecture cloud : Azure Functions, containers, CI/CD. DévSecOps: You Build It And You Run It. IA et Agents Maîtrise de la conception d'agents IA outillés (ReAct, Agentic Workflow, Toolformer-like). Connaissance des frameworks agents : LangChain, LlamaIndex, CrewAI, Semantic Kernel ou équivalents. Forte capacité à modéliser des workflows IA/métiers dans des environnements complexes. Excellente maîtrise des LLM (Mistral, GPT, Claude). 3 Chatbots Conception de flows conversationnels complexes. Intégration de modules mémoire, RAG, reformulation. Optimisation de prompts avancés. Conscience UX conversationnelle : turn-taking, clarifications automatiques. 4 Intégration et Données Appels API REST/GraphQL internes. Interaction avec GED, bases documentaires, data lakes. Utilisation ou construction de {*}connecteurs métier{*}. 5 Qualité, Sécurité et Gouvernance Logs, audit, monitoring : Grafana, Prometheus, Langfuse. Compréhension des contraintes de sécurité des agents : permissions d'actions, filtrage des commandes, sandboxing, conformité interne IA. Forte autonomie et capacité à mener des sujets en transverse. Pédagogie et vulgarisation pour les métiers utilisant les chatbots/agents. Capacité à documenter : guides, API docs, schémas. Esprit produit : proposer, challenger, prioriser, démontrer. Participation active aux rituels Agile et aux démonstrations. 1 Langages et Frameworks Python (FastAPI, async) Node.js/TypeScript Frameworks agents : LangChain, LlamaIndex, CrewAI, Semantic Kernel 2 Modèles et IA LLM : Mistral, GPT, Claude RAG (Retrieval-Augmented Generation) Mémoire et contextualisation 3 Intégration et Orchestration API : REST, GraphQL Outils internes : ERP, GED, RPA, CRM, PHX, IALAB, IAP Connecteurs métier 4 Cloud et DevOps Kafka Azure Functions Containers CI/CD 5 Observabilité et Sécurité Grafana Prometheus Langfuse SSI, DPO, gouvernance IA Compétences demandéesCompétencesNiveau de compétence CI/CD Containers Connecteurs métier SSI, DPO, gouvernance IA KAFKA API : REST, GraphQL LLM : Mistral, GPT, Claude Mémoire et contextualisation Prometheus Python (FastAPI, async) Grafana Langfuse Outils internes : ERP, GED, RPA, CRM, PHX, IALAB, IAP Frameworks agents : LangChain, LlamaIndex, CrewAI, Semantic Kernel Node.js/TypeScript Azure Functions RAG (Retrieval-Augmented Generation)
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Frequently asked questions about working as a Front-End Developer (JavaScript, Node, React, Angular, Vue...)

What is the role of a Front-End Developer (JavaScript, Node, React, Angular, Vue...)

The front-end developer is the IT specialist who is responsible for providing internet users with a pleasant interface for navigation and easy to use. To better perform this job, the professional must possess numerous skills and qualities.

How much does a Front-End Developer (JavaScript, Node, React, Angular, Vue...) charge

The front-end developer's daily rate depends on their level, experience and the area in which they operate. A freelance developer in Paris who masters PHP can have a daily rate of around £400/day. As for the Java developer, they can earn up to £600/day. At the start of their career, a front-end developer can have an annual salary of £30,000 per year. Then, depending on their skills, they can move up to £40,000 annually. A senior front-end developer can earn up to 70,000 euros per year.

What is the definition of a Front-End Developer (JavaScript, Node, React, Angular, Vue...)

When we talk about "front-end," we're referring to the part of a website or application that displays on the screen, the part with which internet users and users directly interact. It's different from the back end, which concerns the invisible part of the site. As for front-end elements, they are composed of HTML, JavaScript, and CSS. HTML development and design are the two main skill areas of the front end. Design falls under the web designer's domain, and as for development, that's handled by the front-end developer. The designer creates graphic mockups with specialized software tools such as Photoshop, and it's up to the front-end developer to translate the graphic mockup into a functional mockup by manipulating code. In simple terms, the web designer draws, the developer formalizes using programming languages like HTML and CSS. Some developers are capable of working with JavaScript. But most of the time, the developer uses their preferred software for all their projects. Previously, development was limited to the back end. But today, more and more designers are starting to take an interest in development. The front-end developer often comes from a web design background.

What type of mission can a Front-End Developer (JavaScript, Node, React, Angular, Vue...) handle

The front-end developer has many main responsibilities: · Create the layout, assembly and integration of mockups using available programming languages: HTML, PHP, CSS, JavaScript...; · Control the elements of the chain, from server to client in order to improve the performance of the site or application; · Support the development team by providing practical technology expertise for the success of web projects; · Solve technical problems related to site rendering and operation; · Maintain a technology watch to stay up-to-date with marketing, technical and technological advances in their field.

What are the main skills of a Front-End Developer (JavaScript, Node, React, Angular, Vue...)

To successfully carry out its missions and perfectly meet the needs of clients and web agencies, the front-end developer must possess a certain number of skills and qualities: · Master the languages used for front-end development: HTML, JavaScript, CSS, PHP, etc. · Master or have some knowledge of Frameworks such as JQuery, Backbone.js or AngularJS. As for qualities, the developer must be equipped with rigor, creativity, and curiosity. They must also be an organized person who properly analyzes clients' needs in order to offer solutions adapted to their expectations. The front-end developer must be able to work in a team and must possess communication skills allowing them to effectively convey their ideas to clients and collaborators.

What is the ideal profile for a Front-End Developer (JavaScript, Node, React, Angular, Vue...)

The Front-End Developer is a professional who may come from a web design background and wishes to strengthen their development skills. They may also be a developer who has decided to specialize in front-end languages. Generally, they work in a web agency or as a freelancer after completing training and obtaining a BTS or DUT in computer science. The front-end developer can also train in back-end to work in both areas simultaneously. In this case, they'll be called a fullstack developer.

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