Empleos de full stack engineer annotator en Barcelona

**Our mission and customers:** We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be ***rated 4.8 on Trustpilot*** ***,*** based on 55,000+ reviews. ***Our culture*** puts customer satisfaction at the core of what we do, as proven by our...

Techmunity is hiring Senior Full Stack Engineers to build AI-powered agents that can resolve customer service problems by interacting with brand data.You will design and implement backend and frontend systems, connect data sources, and scale infrastructure to support real conversations.You will work on cross-functional features across LLM/agent systems, APIs...

Full Stack Developer - Telecom BSS - Remote - Applicants Must Be EU Citizens - 12 Month Contract We are looking for experienced developers to support and develop telecom BSS applications for a Telco customer. The role covers application development and ongoing application support within a TypeScript, Node.js and React environment, deployed on Kubernetes....

ElevenLabs is seeking Full-Stack engineers to develop and maintain both front-end and back-end components of our product suite. You will own end-to-end features and collaborate across engineering, growth and sales to solve critical problems. The role is remote globally, with optional offices in London, New York, San Francisco and Warsaw. We offer flexibility...

Jobgether SRL is seeking a Senior Full Stack Engineer (NET/React) based in Spain to build scalable, secure, and high-performing applications across backend and frontend layers. You will work with .NET/C#, React, Redux, and JavaScript, shaping architecture and development practices, and contributing to cloud-based solutions on GCP with CI/CD. You will mentor...

Allianz Technology seeks a Software Engineer to design, build, test, and maintain software solutions. You will handle technical design, development, and testing, with support and consultation in early concept phases.The role emphasizes agile team collaboration, non-functional requirements, and maintainability across environments. Hybrid work and...

We power people’s progress.At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.We’ve just reached unicorn status with a $150M...

Lever, Inc. is seeking a Product Engineer based in Spain to join a fast-growing AI environment. You’ll own features from idea to release, shaping frontend with Next.js and backend with Django and PostgreSQL, and work directly with the founder to bring ideas into production. This role offers high autonomy, minimal meetings, and the chance to influence 3D...

FuncionesEn Cobser Consulting buscamos un/a Data & AI Full Stack Engineer para incorporarse a un proyecto internacional dentro del sector asegurador.Buscamos una persona con experiencia en desarrollo Full Stack, visualización de datos y soluciones de Inteligencia Artificial, capaz de participar en el diseño y desarrollo de aplicaciones orientadas a datos,...

We power people’s progress.At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.We’ve just reached unicorn status with a $150M...

Are you a Senior Full Stack Engineer looking for an opportunity to build and scale high-impact, user-facing AI product features?At Restb.Ai, we specialize in industry-specific visual recognition, helping businesses unlock powerful insights through AI-driven automation.We don't just recognize objects (that's so ****), we teach computers to understand...

The Senior Full Stack Engineer will build and own product features working closely with the tech leadership.You will contribute to both frontend and backend systems, helping ship high quality software that is used daily by customers.This role is focused on delivery, quality and collaboration with the ability to influence technical decisions.Your...

Simple Life is the #1 AI-powered health coaching app for adults who want to lose weight and enjoy a healthier lifestyle-without the stress or extremes. Our mission is to empower people to feel their best every day. By challenging traditional, restrictive approaches, Simple offers a more sustainable method grounded in ease, personalization, and real-life...

Mainloop Barcelona is building a new engineering team in Barcelona to own production software, from idea through launch, leveraging AI agents and a shared architectural framework. This role emphasizes deep technical ownership, architectural decision-making, and a strong collaboration with product owners and other engineers. As a Frontline engager in an...

We Are Wizeline, a global AI-native technology solutions provider, develops cutting-edge, impact. Are you a fit? Sounds awesome, right? Now, let’s make sure you’re a good fit for the role: We Are Wizeline, a global AI-native technology solutions provider, develops cutting-edge,AI-powereddigital products and platforms. We partner with clients to leverage...

MVST is looking for a Full Stack Developer to join their team in Barcelona. You will develop and maintain web and mobile applications while collaborating with cross-functional teams. The ideal candidate has 2-4 years of experience in full-stack development with proficiency in JavaScript frameworks, Node.js, and database technologies. The company offers a...

Preply is looking for a Senior Full Stack Engineer in Barcelona to help shape the future of our learning platform. You will balance backend focus (Python/Django) with frontend work (React/Typescript), driving data-informed product decisions and scalable architecture. You’ll mentor peers, raise engineering standards, and partner with product, data, and UX...

Jobtailor is seeking a driven full-stack engineer to work closely with customers from onboarding through ongoing usage, helping them integrate and optimize our AI solutions. You will build new features and scalable tools using React, TypeScript, Node.js, and Python, while designing AI/ML applications and refining LLM prompts to improve outcomes....

We're looking for aFull Stack Engineerfor one of our clients who enjoys building new products from the ground up and is eager to help shape AI tooling for the mobility industry.Work across the full stack to solve complex problems using incomplete and messy dataDesign and evolve canonical data modelsBuild pipelines to handle real-world data inputsDefine and...

Longtail Technologies, Inc. is seeking a seasoned backend/full-stack engineer to help evolve Sightline, our conversational analytics and intelligent alerting product. You will own features end to end, from understanding customer problems to deployment and production support. You will design backend services and APIs, ensure robust, observable systems, and...