senior full stack engineer

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...

**About Ultralytics:** At Ultralytics, we commit to relentless innovation in the AI space and seek team members who resonate with our ambition to produce the world's best YOLO AI models. If you're obsessed with AI, eager to make an impact on the world, and thrive in dynamic, high-intensity environments, we invite you to apply for a position on our...

About LongtailLongtail is building an intelligent decision-streaming platform that helps airlines make smarter, faster commercial decisions in real time. Combining automation, proprietary algorithms, AI, and live data, our technology helps airlines optimize pricing, availability, and product flexibility across thousands of routes worldwide.We're a...

About Longtail Longtail is building an intelligent decision-streaming platform that helps airlines make smarter, faster commercial decisions in real time. Combining automation, proprietary algorithms, AI, and live data, our technology helps airlines optimize pricing, availability, and product flexibility across thousands of routes worldwide. We're a...

Solera is seeking a Lead .NET Developer in Madrid with 10+ years of experience across .NET, Python, and React/Angular. You will lead full-stack development, architect scalable solutions, and drive DevOps practices to deliver high-quality software.The role requires collaboration with Product Management, Business Analysts, and cross-functional teams in an...

Performanze, una solución digital para validar, escalar y optimizar negocios online, busca un Programador Full Stack para unirse al equipo en Madrid. Serás clave en el desarrollo y mantenimiento de soluciones web de alto rendimiento, trabajando en un entorno ágil y colaborativo con product, diseño y marketing. Se requiere 5–7 años de experiencia en...

Parser is seeking a motivated Senior Fullstack Engineer in Madrid to join our Engineering team. You'll work on impactful projects using Java, Kotlin, and React, designing and building solutions that are vital to our mission. In this role, you will write high-quality code, mentor others, and enhance existing systems. We value creativity and collaboration,...

Portless is seeking a senior full-stack engineer to own and scale major pillars of our global supply chain platform, delivering end-to-end features for the B2B portal and logistics engine.You’ll design heavy-duty API integrations with OMS/WMS/TMS, build in a serverless, cloud-native stack, and drive resilient architectures in a remote-first, globally...

We are looking for a Senior Full-Stack Engineer with a strong backend lean to join the team that builds and evolves the platform powering this experience. You will work on the Research Topic Management (RTM) application — a distributed .NET system with Vue/Nuxt frontends, SQL Server-heavy data operations, Github/Azure DevOps-driven deployments, and async...

UST España & Latam is seeking an experienced Developer Analyst - Full Stack Developer to join our team in Spain. The role requires 5+ years designing, developing, and maintaining scalable web applications with strong Angular, Node.js, Spring Boot, and OpenShift expertise.You will design, develop, and maintain full-stack solutions, work across frontend and...

mediasmart, part of the Affle group, is looking for a Senior Full Stack Engineer to join our product technology team. You will develop for our main products: the API and the web frontend, serving large agencies and direct customers across the globe.You will own features end-to-end from concept to deployment, collaborate with cross-functional teams, and shape...

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...

Hopper is seeking a senior full stack engineer to anchor HTS Assist, Hopper's agentic AI assistant for travel. You will own the realtime and voice layer end to end, building across React/TypeScript front ends, Scala and Python services, and cloud infrastructure.The role covers telephony integrations, streaming speech-to-text and text-to-speech pipelines, and...

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...

In this role, you will be architecting features from the database to the browser. Your center of gravity is the Go backend, APIs, data models, system design, but you’ll move into the React/TypeScript frontend whenever the feature requires it. You’ll join an experienced and supportive team where you’ll have a significant voice in shaping both our...

About EmotionAt Emotion, our mission is to simplify the transition to electric mobility through comprehensive, customer-focused services. We're dedicated to making the process, from choosing the right electric vehicle to installing home or workplace EV chargers, as seamless as possible.We're a small, fast-moving team building the internal tooling and...

ERNI is seeking a senior data governance engineer to lead the evolution of an enterprise data governance catalog platform. You will apply Python and Angular skills, work with cloud-native development, and drive metadata management, data lineage and governance workflows across the organization. As a senior member, you will mentor engineers, influence...

Jobtailor en Barcelona busca un desarrollador full stack para evolucionar y mantener una solución core de soporte a ventas, con un énfasis en frontend y backend.El equipo de producto ágil diseña e implementa funcionalidades escalables y de alta calidad. Se valora experiencia en Angular, Java/Spring Boot, MongoDB y procesamiento de flujos, además de...

IFS is seeking a Senior Full Stack Engineer to join its Industrial Sustainability Reporting Platform. The role focuses on building scalable, AI-native features across frontend and backend, with strong emphasis on modular, API-first design and cloud-native deployment.Hybrid work options are available within a globally distributed team. The candidate will own...

IFS is seeking a Senior Full Stack Engineer to help shape and deliver a cloud-based AI carbon intelligence platform. You will lead both front-end and back-end work, influence architectural decisions, and drive high-quality software in a dynamic, diverse environment.You will collaborate across Product, AI, Platform Engineering, and other teams, champion...