Empleos de fullstack engineer with python and react en Barcelona

Job Reference 187\_26\_AII\_LM\_RE2 Position AI Agent & Tool-Use Engineer (RE2) Closing Date Thursday, 16 July, 2026 **Reference:** 187\_26\_AII\_LM\_RE2 **Job title:** AI Agent & Tool-Use Engineer (RE2) **About BSC** The Barcelona Supercomputing Center - Centro Nacional de Supercomputación (BSC-CNS) is the...

- We are building seQura’s Smart Agent platform, an intelligent agent system that guides shoppers before, during, and after their purchases. The platform relies on LLMs for human-like interaction, combined with retrieval-augmented generation (RAG) over SeQura’s data, crawling, and structured product/taxonomy information - This role does not require AI...

**Description** Do you want to shape the architecture behind systems that tell Amazon's fulfillment network exactly how to plan, schedule, and ship millions of packages every day? We are looking for a Senior Software Development Engineer to lead the technical direction across multiple teams and production platforms within Fulfillment Optimization: systems...

AgileEngine, LLC. is seeking a Senior Software Engineer to design and implement a multi-tier sync architecture spanning local device storage, restaurant edge, and cloud backend. You will apply conflict-resolution strategies, event sourcing, CQRS, and saga patterns across orders and receipts. The role requires deep offline-first experience with a React Native...

Can you imagine building the user experience behind a platform that supports pharmaceutical innovation? At ERNI, we’re looking for a Senior Frontend Product Engineer to join an international project within the pharmaceutical industry. You’ll play a key role in the evolution of a product that helps manage and visualize data from different manufacturing...

Company Description Join The Game! Leader in the development and publishing of games, Gameloft® has established itself as a pioneer in the industry, creating innovative gaming experiences for over 20 years. Gameloft creates games for all digital platforms, from mobile to cross-platform titles for PC and consoles. Gameloft operates its own established...

ERNI in Barcelona seeks a Senior Frontend Product Engineer to join an international pharma project. You will develop modern React applications and collaborate with Product and UX to deliver intuitive interfaces and data-driven experiences. As a senior, you will mentor others, share knowledge, and help evolve the product roadmap. The role combines hands-on...

Jobtailor in Barcelona is seeking an experienced backend engineer to design, develop, and optimize scalable services using Python and FastAPI. You will work with MongoDB and large-scale data processing pipelines, applying Spark for ETL and analytics on private cloud clusters. Collaboration with data, frontend, and business teams is essential. The role...

Darwin Recruitment is seeking an experienced React Frontend Engineer to join a fast-paced product engineering team delivering modern web applications for a large-scale digital platform. You’ll build intuitive, high-performance user interfaces, collaborating with UX designers, backend developers, and product stakeholders to create scalable frontend...

Your new company A leading international company with a strong digital focus is looking for a Frontend Engineer to join its Platform team. This team plays a key role in enabling product teams to build and scale internal digital solutions, ensuring consistency, efficiency and high-quality user experiences across the organization. Your new role You will...

Manychat is seeking a Senior Python Engineer for Brands in Barcelona. You will own backend systems, design scalable services with FastAPI, and directly influence product decisions. You’ll collaborate with product and partners to ensure the code delivers real metrics and growth. You’ll work on building a new product from scratch, with room to lead your...

**About The Hiring Process** When you apply, our AI-powered matching platform considers you not only for this opportunity, but also for other relevant roles across our network, so one application can unlock multiple career opportunities. We only work with real companies hiring for live positions. Every opportunity on our platform is an active search....

Location: BarcelonaAre you passionate about designing scalable, high-performing enterprise systems? Do you have the expertise to architect modern applications and databases across diverse technology stacks? We’re looking for an experienced Technical Architect to define and drive the architecture of our business‑critical platforms, ensuring scalability,...

**About The Hiring Process** When you apply, our AI-powered matching platform considers you not only for this opportunity, but also for other relevant roles across our network, so one application can unlock multiple career opportunities. We only work with real companies hiring for live positions. Every opportunity on our platform is an active search....

Technical Architect Department:TechnologyEmployment Type:Full TimeLocation:BarcelonaDescription Are you passionate about designing scalable, high‑performing enterprise systems? Do you have the expertise to architect modern applications and databases across diverse technology stacks? We’re looking for an experienced Technical Architect to define and drive...

Alignerr is seeking a skilled Software Engineer to help shape AI-generated code in Barcelona, with flexible remote hours and a hands-on, contract-based role. You will write, review, and refine AI outputs, improving accuracy, safety, and reliability of code generated by AI systems. You’ll work across languages (Python, JavaScript, Java, C++, Go, or...

Junior Support & QA Engineer – Devices Location: Barcelona | Type: Full-time We're hiring—and we're doing it the Frekuent way. In a world where technology moves fast, we move with purpose. If you're ready to make your next big move and create something meaningful, you're in the right place. Being part of our dream team isn't just about a job, it's...

team.blue is seeking a skilled front-end engineer to develop and maintain the Hub's user-facing components using React and TypeScript, collaborating with designers and back-end engineers. You will build modular UI components, dashboards, and embedded user flows while ensuring accessibility, performance, and reliability. Remote-first, AI-enabled culture...

About Powens Powens is the trusted Open Finance partner for financial institutions and fast-growing companies across Europe and Latin America, helping them automate financial workflows, embed payments seamlessly, and turn real-time financial data into actionable decisions. Headquartered in Barcelona and Paris, Powens operates at the intersection...

Senior Python Engineer, Manychat for Brands Barcelona, Barcelona, SpainCreating content that resonates is great — turning that attention into growth is even better. That's what Manychat does.Our AI-powered automations help creators and brands engage with audiences across Instagram, Messenger, WhatsApp, and TikTok — at the right moment, with the right...