Empleos de mid-senior full stack developer en Madrid

Jobtailor is seeking a Senior Software Engineer to lead design and implementation of scalable features across our Saa S products in Madrid. You will shape architectural decisions, mentor engineers, and collaborate with product and business leadership to drive technical strategy. Ideal candidates have 7+ years in software engineering, experience with Java...

Netenders, based in Barcelona, seeks a Senior Full Stack Developer (Freelance) to collaborate with the in-house team on long-term e-commerce CMS projects. You will architect scalable Rails backends and React frontends, focusing on supplier integrations and high-volume data flows.You will work autonomously in a freelance capacity, with flexible remote...

A pioneering healthcare technology company based in Barcelona is seeking a Senior Full Stack ML Engineer to lead the development of innovative machine learning models targeted at solving complex healthcare challenges. The role demands strong Python skills, experience in data science, and the ability to mentor colleagues. As part of a collaborative team, you...

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...

Hiberus, una compañía tecnológica con sede en Madrid, busca un Senior FullStack Engineer con experiencia en Node.Js y React para unirse a su equipo. Se valoran habilidades en microservicios, TypeScript y comunicación en inglés.Te unirás a un entorno colaborativo, con formación continua, horarios flexibles y un enfoque en innovación. Ofrecemos...

ISOLUTIONS in Barcelona is seeking a Senior Full Stack Developer to join an international team. You’ll work with C#, .NET, React and TypeScript in a hybrid setup from Barcelona, collaborating with teams in Switzerland to deliver high-value software.The role emphasizes design decisions, architectural discussions, and a strong focus on delivering business...

Arsys, part of the IONOS Group, seeks a Specialist Full-Stack Execution for the Euro Office Performance Group (Server Development) to drive high-volume feature delivery and cross-pod collaboration.You will build end-to-end prototypes from architectural blueprints, generate AI-assisted documentation, and work in a multilingual, open culture with flexible...

Knowmad mood busca un/a desarrollador/a senior backend Java para un cliente internacional, ubicado en Madrid Centro con modalidad semipresencial 2 días/semana. Se espera experiencia sólida en Java, Spring, y Angular, con foco en microservicios y pruebas.Se valorará Kubernetes/OpenShift, Docker, BBDD relacionales y Kafka, junto a un enfoque ágil y buenas...

Senior Full Stack Engineer (Remote in Spain Possible)Apply for theSenior Full Stack Engineerrole atLanguageWire, a global leader in language and content services dedicated to helping brands reach their full global potential.About the RoleYou will help modernize our core application and develop valuable features for our translators, customers and internal...

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

Applus IDIADA is a global automotive engineering leader seeking talented developers to join a dynamic Digital Business team. We offer a highly flexible hybrid work model and wellbeing benefits, with 60+ engineers collaborating on AI-powered platforms in a diverse environment.Join us to design and deliver full-stack AI-enabled applications across backend and...

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...

Max IT Consulting – Max Corporate Group in Spain seeks a Senior Software Engineer for Digital Banking & Fin Tech products. You will own complete product experiences, from customer-facing flows to backend services, focusing on banking, payments, onboarding, KYC, and other regulated finance workflows. The client prioritizes strong senior engineering with...

Impala Search Ltd is seeking a Senior Full-Stack Engineer with a frontend focus to build customer and dealer-facing experiences using React, Next.Js and TypeScript. You will own APIs and backend services necessary to deliver features end-to-end, while improving performance and accessibility across a multinational platform.Join a growing mobility platform...

EPAM Systems in Madrid is seeking a Senior Full Stack Engineer for the private banking sector to accelerate your career in financial services technology.You will work in a cross-functional, DevOps-centred team using agile methodologies, delivering high-quality code in Java, React, and TypeScript while collaborating with stakeholders and architects to align...

ResponsibilitiesLead the design, development and operation of new capabilities across our SaaS products.Make architectural decisions that balance immediate business needs with long‑term scalability and maintainability.Work closely with product, engineering and business leadership to shape product roadmaps and technical strategy.Identify and drive...

MaxIT Consulting – Max Corporate Group is seeking a Senior AI-First Full-Stack Engineer to own outcomes across the full product stack in a fast-growing European tech company focused on an AI-powered healthcare workforce platform.You will work in a small, founder-led environment with significant ownership over product and engineering decisions, using...

Impala Search Ltd is seeking a Senior Full-Stack Engineer with a frontend focus to build customer and dealer-facing products using React and Next.Js, while owning APIs and backend services to deliver features end-to-end.Join a data-driven mobility platform expanding across multiple markets, currencies and languages, contributing to frontend performance, SEO...

CONVOTIS Iberia busca un perfil full stack senior para participar en su programa de talento remunerado centrado en Spec-Driven Development. Se valorará experiencia en arquitectura y diseño de APIs, y la disposición a formarse en este enfoque para después incorporarse a un proyecto real dentro de la compañía.Ofrecemos formación, acceso a herramientas...

A software company in Las Palmas seeks a Senior Software Engineer to lead the development of web and mobile applications. The role involves collaborating with cross-functional teams and integrating AI tools into workflows. Candidates should have over 6 years of experience in software development, system design skills, and a Master's degree in Computer...