🔵 En **CAPITOLE**, ¡seguimos creciendo y queremos hacerlo contigo!

Desde Capitole estamos buscando reforzar a una de nuestros equipos con un rol de Fullstack dentro de una empresa de producto propio, con más foco en el back con Node.

**Modalidad:** Remoto, con posibilidad de acudir a las oficinas de Barcelona cada 2/3 meses.

*   Experiencia en desarrollo con **JavaScript** (conocimientos profundos, peculiaridades y workarounds incluidos 😉)
*   Sólida experiencia con **Node.js** y **Express.js**
*   Conocimientos avanzados en **PostgreSQL**
*   Dominio de **React** y **React Native**, aplicando buenas prácticas y convenciones
*   Valorable experiencia con desarrollo **nativo en iOS y/o Android**
*   Familiaridad con **frameworks de testing**
*   Experiencia trabajando con **Git**, en entornos ágiles (**Scrum**) y con **integración continua¿Por qué CAPITOLE?**

*   **Presupuesto deformación de €1.200** para que lo gastes en lo que desees (eventos de tecnología, libros, cursos, certificaciones, ¡lo que quieras!). 📚
*   Reuniones mensuales con tu equipo para asegurar una retroalimentación continua. 🔄
*   **Seguro médico privado** cubierto en su totalidad por Capitole. 🏥
*   **Compensación flexible** (vales de restaurante, transporte y/o guardería). 🍽️🚇
*   Acceso a **Wellhub.** 🏋️ ♀️

¿Aún no nos conoces? ¡Descúbrenos! 👀 Y... ¿Qúe opinan de nosotros?

_El empleado/a se adherirá a las políticas de seguridad de la información:_

_\- Tendrá acceso a la información confidencial relativa a Capitole y al proyecto en el que trabaja._

_\- Tendrá que cumplir las políticas de seguridad y las políticas internas de la empresa y cliente._

_\- Tendrá que firmar un NDA._

Fullstack Node / React

We are seeking an experienced AI Agent Developer to design, build, deploy, and support production-grade AI agents across our enterprise technology ecosystem. This role is central to our AI initiative to deliver AI agents—that drive measurable business outcomes across retail, service, finance, and customer experience. The ideal candidate has hands-on experience shipping AI agents in enterprise environments and is comfortable working across multiple platforms including Anthropic Claude, Google Gemini on Vertex AI, Microsoft Azure AI, DevRev, and Sierra AI. You will partner closely with solution architects, infrastructure engineers, data teams, and business stakeholders to turn use cases into deployed, monitored, production-ready agents. Core Responsibilities Agent Design & Development

*   Design, develop, and iterate on AI agents using agentic frameworks across Claude (MCP, tool use, multi-turn orchestration), Gemini on Vertex AI (Agent Builder, extensions, grounding), Azure AI (Azure OpenAI Service, Semantic Kernel, Promptflow), DevRev, and Sierra AI.
*   Implement agent architectures including ReAct, plan-and-execute, multi-agent orchestration, and retrieval-augmented generation (RAG) patterns.
*   Build agents that integrate with enterprise systems such as Snowflake, Salesforce, ServiceNow, and internal APIs via function calling, tool use, and MCP server configurations.
*   Develop and maintain reusable agent components, prompt libraries, and evaluation harnesses.

Deployment & Production Operations

*   Deploy agents into production environments on GCP, Azure, and hybrid infrastructure with full CI/CD pipelines (Harness).
*   Implement observability, tracing, and logging for agent workflows using Dynatrace and platform-native tooling.
*   Build guardrails, content filtering, and safety mechanisms to ensure responsible agent behavior in production.
*   Own agent lifecycle management: versioning, A/B testing, canary deployments, rollback procedures, and performance monitoring.

Data & Integration

*   Design and implement grounding pipelines that connect agents to enterprise data sources including Snowflake data warehouses, SharePoint document libraries, and Salesforce CRM.
*   Build and optimize vector search, embedding pipelines, and knowledge retrieval systems (pgvector, Vertex AI Search, Azure AI Search).
*   Develop API integrations using Kong/Konnect API gateway and RESTful service patterns.

Security & Compliance

*   Implement prompt injection defenses, input/output validation, and PII handling safeguards for all agents.
*   Work with security teams to ensure agents meet enterprise security standards including CyberArk credential management and Chainguard container security.
*   Conduct red-team testing and adversarial evaluation of agent behaviors prior to production release.

Collaboration & Enablement

*   Partner with AI Solution Architects to translate business requirements into technical agent specifications.
*   Contribute to internal developer documentation, runbooks, and best-practice guides for agent development.
*   Participate in code reviews focused on AI-generated code quality and security.
*   Support cross-functional teams in evaluating new agent platforms and capabilities.

**Required Qualifications**

*   5+ years of software development experience with at least 2 years focused on AI/ML agent development in enterprise environments.
*   Demonstrated hands-on experience deploying and supporting AI agents in production, not just prototypes—candidates must be able to speak to real-world deployments, failure modes, and lessons learned.
*   Production experience with two or more of the following platforms: Anthropic Claude (API, MCP, tool use), Google Gemini / Vertex AI (Agent Builder, extensions, grounding), Microsoft Azure AI (Azure OpenAI, Semantic Kernel, Promptflow), DevRev AI agents, Sierra AI conversational agents.
*   Strong proficiency in Python and/or TypeScript/Node.js for agent development.
*   Experience with agentic design patterns: ReAct, chain-of-thought, multi-agent coordination, tool use / function calling, and RAG architectures.
*   Working knowledge of LLM fundamentals: tokenization, context windows, prompt engineering, fine-tuning, and evaluation methodologies.
*   Experience with CI/CD pipelines, containerized deployments (Docker, Kubernetes), and cloud-native infrastructure on GCP and/or Azure.
*   Familiarity with enterprise data platforms, particularly Snowflake, for agent grounding and retrieval.
*   Strong communication skills with the ability to explain complex AI concepts to non-technical stakeholders.

**Preferred Qualifications**

*   Experience with Model Context Protocol (MCP) server development and integration.
*   Hands-on experience with Vertex AI Agent Builder and Google’s agent ecosystem.
*   Familiarity with agent evaluation frameworks and LLM benchmarking (e.g., LangSmith, Braintrust, custom eval harnesses).
*   Experience building consumer-facing conversational AI agents in retail or automotive verticals.
*   Knowledge of API gateway patterns (Kong/Konnect) and enterprise integration architectures.
*   Background in prompt injection defense, AI red-teaming, and responsible AI practices.
*   Experience with observability platforms such as Dynatrace for AI workload monitoring.
*   Contributions to open-source AI/agent projects or published work in the AI agent space

Skills: machine learning,llm,artificial intelligence

AI Agent Developer

**Details:** Job Description **Stefanini Group is hiring!Stefanini is looking for Cloud DevOps Engineer-RemoteFor quick apply, please contact Ravi Singh Ph: 248 213 3610Ravi.singh@stefanini.comW2 Only!**Responsibilities: Client is looking for a Full Stack Engineer with extensive technical breadth of experience in JPasS and cloud technologies. This will be a key position leading the development teams in the cloud strategy integration and execution for the Markets Business Technology organization in partnership with System IT. In this role, you will use your technological expertise to integrate highly scalable, flexible, and resilient cloud solutions that address customer needs while reflecting cloud principles and best practices. As a trusted advocate, you will help shape cloud strategies, and support with sizing, scope, and direction for new engagements. You will be a major contributor to innovation and help anchor Proof of Concept activities, and guide technological direction for the cloud. The primary focus of this role will be to participate as a part of our dynamic and customer-focused team, developing an integration strategy for a Markets Business Technology Rapid Solutions Team based web applications in the cloud. The position will focus on effective use of leading edge technologies creating a foundation for resilient and effective environments. Key Responsibilities**:**

*   Engage with architects, developers and technical support teams to achieve success in deployment of Cloud application services within a managed service environment.
*   Work with business partners, architects, and other groups to identify technical and functional needs of systems, and determine priority of needs.
*   Collaborate with performing teams to deliver new capabilities in business applications and/or remediate issues.
*   Analyze, define and document requirements for data, workflow, and logical processes
*   Analyze and translate business, information and technical requirements to create patterns for solutions that integrate across applications, systems and platforms to achieve business objectives.
*   Assess foundational services, integration services, cloud operations and management capabilities.
*   Champion, communicate and rationalize approaches with business leaders, organization management and within teams to develop structured outcome of proof of fit/proof of concept.
*   Establish the direction for application development approaches, including tools, process and frameworks.
*   Support preparation of documentation including application designs, Assessments, Security Management, Implementation Plans and post implementation documentation.
*   Lead by example, demonstrating high performance in the areas of customer satisfaction, collaboration, teamwork, and reliability.
*   Participate in the establishment of local standards, patterns, and practices for cloud integration, while providing input and influence to broader organizational standards and initiatives.
*   Spearhead use of innovative new technology and best practices for new product and solution development initiatives.
*   Participate in IT strategy development, including environmental analysis, opportunity identification, business cases, business innovation, and portfolio development. Responsible for the planning and engineering of an organization's systems infrastructure. Includes the implementation and design of hardware and software. Monitors the performance of systems.
*   Typically requires a bachelor's degree in area of specialty and 6-8 years of experience in the field or in a related area.
*   Familiar with concepts, practices, and procedures within a particular field.
*   Relies on extensive experience and judgment to plan and accomplish goals.
*   Performs a variety of complicated tasks.
*   Works under general supervision.
*   Leads and directs the work of others.
*   A wide degree of creativity and latitude is expected.
*   Typically reports to a manager or head of a unit/department.

Job Requirements **Details:Qualifications:**

*   Master's Degree
*   AWS Certification (Certified Developer or Solutions Architect)
*   6+ years software development experience.
*   2+ years of experience in Agile.
*   2+ years of experience in deploying Red Hat OpenShift Container Platform solutions.
*   2+ years of experience in deploying cloud-based solutions.
*   2+ years of experience in deploying hybrid cloud-based solutions.
*   Master's degree from an accredited college or university with specialization in an Information Technology field, or an equivalent combination of related education and work experience.
*   Minimum eight years of broad technical experience in one or more phases of information technology and management information systems.
*   Experience to include managing highly complex IT efforts and / or operations.
*   Eight years of information technology experience directly related to software design and development, of which 2+ years focused on cloud architecture, design, and implementation.
*   Excellent oral and written communication, presentation, leadership, interpersonal, collaborative/relationship-building, organizational & planning, and analytical & problem solving skills.
*   \*Demonstrated experience being part of a high velocity DevOps team
*   \*Practical articulation of IaC - thorough knowledge and practical experience implementing container management concepts and practices using OCP, Kubernetes, and Docker
*   Innate experience with and application of Agile principles Highly proficient in Java Fullstack Engineering, development and Cloud technology platforms:
*   Cloud-native Architecture: Well Architected Framework, 12 Factor App, Cloud Reference Architectures, Cloud Service Models, Microservices architecture, Serverless architecture, Decoupled UI including JavaScript frameworks (AngularJS, React), single page applications, and modern web applications.
*   Cloud Strategy: Business case development, Application assessment and migration planning, Cloud operating model design.
*   Cloud Security: Shared Security Model, Cloud Security Architecture, IAM policies/roles, WAF, OWASP Web/API, SAML, vulnerabilities and compensating controls (CSP, CSRF, XSS, SQLI) etc.
*   Cloud-native Services: Optimization of applications to scalable cloud designs, designing, arch and integration of applications to modern cloud patterns.
*   Containerization (Docker) and container orchestration (Docker Swarm, Kubernetes), Infrastructure as Code
*   \*Cloud-native monitoring, logging - ELK, Splunk, CloudWatch, amongst others.
*   \*Application Integration Services - RestAPI, API gateway ex. MuleSoft Well-versed in Agile software development practices & ability to contribute to sprint ceremonies such as, Refinement, Planning, Review, Retrospectives.
*   Well-versed in Continuous Integration and Continuous Delivery (CI/CD) practices, automated testing, Automated code quality scanning, and Automated Deployments. ex Deploy XL , Deploy Release, Subversion, Jenkins, Jira, Remedy Demonstrated experience in mentorship and serving as technical subject matter expert (SME) for a development team.
*   Experience in the Finance industry or experience developing solutions involving financial products is a plus. "

Stefanini takes pride in hiring top talent and developing relationships with our future employees. Our talent acquisition teams will never make an offer of employment without having a phone conversation with you. Those face-to-face conversations will involve a description of the job for which you have applied. We also speak with you about the process including interviews and job offers. About Stefanini Group: The Stefanini Group is a global provider of offshore, onshore and near shore outsourcing, IT digital consulting, systems integration, application, and strategic staffing services to Fortune 1000 enterprises around the world. Our presence is in countries like the Americas, Europe, Africa, and Asia, and more than four hundred clients across a broad spectrum of markets, including financial services, manufacturing, telecommunications, chemical services, technology, public sector, and utilities. Stefanini is a CMM level 5, IT consulting company with a global presence. We are CMM Level 5 company

Cloud DevOps Engineer

**Mid Level JavaScript Developer | £40,000 - £45,000** We're working with an innovative iGaming powerhouse on this exciting opportunity to build the next generation of web and mobile games. If you are passionate about high-performance JavaScript and want to see your code come to life in a fast-paced, creative environment using Pixi.js and modern ES6+, this is the role for you. Join a collaborative team where you will bridge the gap between technical logic and visual excellence, working alongside world-class artists and designers to deliver seamless gaming experiences to a global audience. This is a fully remote role offering the chance to level up your skills in technical troubleshooting, unit testing, and agile game development. **The Role**

*   Develop and maintain highly interactive mobile and web-based games using JavaScript and Pixi.js.
*   Collaborate directly with designers and project managers to optimize game performance and user engagement.
*   Write clean, maintainable code following ES6+ standards including Classes, Promises, and modern design patterns.
*   Support the implementation of robust Unit Tests and automated testing to ensure a bug-free gaming experience.
*   Contribute to the full software development lifecycle within an Agile framework, from initial briefing to final deployment.

**What You'll Need**

*   Commercial experience with JavaScript (ES6+), HTML5, CSS3, and JSON handling.
*   Hands-on experience with game engines or rendering libraries such as Pixi.js, Phaser, or Three.js.
*   Proficiency with Git version control and a solid understanding of front-end architecture.
*   A problem-solving mindset with the ability to debug complex technical issues and participate in code reviews.
*   Bonus points for experience with Node.js, automated testing frameworks, or a degree in Computer Science.

**What's On Offer**

*   100% remote working flexibility with a supportive, digital-first culture.
*   Strong focus on work-life balance with 25 days holiday, bank holidays, and your birthday off.
*   Comprehensive financial security including a Standard Life pension, life cover (2x salary), and access to employee share schemes.
*   Holistic wellbeing package featuring healthcare savings, support services, and extensive retail/travel discounts.

**Apply via Haystack today!**

JavaScript Developer

**Job Title:** eCommerce Developer - Magento, Shopify, WooCommerce (WordPress **Job Type:** Contractor **Location:** Remote **Job Summary** Join our customers team as a skilled eCommerce Developer, where you will play a pivotal role in architecting and developing innovative, complex eCommerce solutions. As part of an AI Agent project, your expertise will directly contribute to training next-generation AI models and powering state-of-the-art commerce experiences. **Key Responsibilities**

*   Design, develop, and maintain robust eCommerce platforms using Magento, Shopify, WooCommerce (WordPress) or any complex eCommerce build.
*   Implement and optimize seamless API integrations, including REST APIs, middleware solutions, and third-party service connectors.
*   Collaborate with cross-functional teams to create scalable, secure, and high-performance eCommerce applications.
*   Develop and deploy fullstack applications leveraging modern frameworks such as React Native and backend technologies like PHP.
*   Manage cloud infrastructure on AWS, GCP, and Azure to ensure uptime, scalability, and security for all eCommerce services.
*   Work closely with AI engineers to annotate, document, and leverage your development expertise in training advanced AI models.
*   Demonstrate exceptional written and verbal communication while documenting processes and collaborating with stakeholders.

**Required Skills And Qualifications**

*   Minimum 3 years of experience building and maintaining complex eCommerce websites and solutions.
*   Deep proficiency with Magento, PHP, Shopify, WordPress, and React Native.
*   Strong expertise in integrating APIs, middleware, and working with REST architecture.
*   Hands-on experience with Salesforce integrations and eCommerce workflows.
*   Proven knowledge of cloud platforms: AWS, GCP, and Azure.
*   Exceptional written and verbal communication skills, with the ability to explain technical concepts to diverse audiences.
*   Strong problem-solving skills, attention to detail, and a passion for delivering high-quality solutions.

**Preferred Qualifications**

*   Experience working on AI-driven or AI-assisted eCommerce projects.
*   Background in training, supporting, or collaborating with AI/data teams.
*   Demonstrated ability to work on high-stakes, complex builds in a distributed, remote environment.

Fullstack Node / React

Job Description

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Capitole

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