Empleos de senior java full-stack engineer remote rest en Sevilla

YO AI Labs is seeking experienced Full-Stack Software Engineers to support an AI training project focused on software development, debugging, code evaluation, and technical problem-solving. This is a contractor role offering about 15 hours per week and fully remote work globally. Responsibilities include building and debugging frontend and backend systems,...

Staff Full stack Engineer (Contract) | Rust and Java (Primary) | React and Python (Secondary) | Fully Remote (EU-based) | £500-600/day | Outside IR35 | 12-month contract The Opportunity We’re supporting a fast-scaling, globally distributed tech business that is evolving its backend architecture and investing heavily in performance, scalability, and...

Jobgether, based in Spain, is seeking a Senior+ Full-Stack Engineer to build a developer infrastructure platform enabling AI applications to connect with external APIs. You will own features from design to deployment across backend, APIs, runtime, and frontend, while collaborating with customers in a remote-first startup. Role emphasizes autonomy,...

Jobgether is seeking a Senior Software Engineer (Laravel | Next.js | PostgreSQL) based in Spain to join an established engineering team. You will work across the full stack, contributing to migrations, API integrations, and performance optimization for a large-scale web application. You will mentor peers, influence architecture, and collaborate with DevOps...

Company: SimpleStudy is a consumer AI platform for students. We help them stay motivated to study their subjects - everything from Biology and Mathematics to Literature and Art. Our small team has already helped +1.5 M students worldwide (UK, Ireland, Brazil, South Africa, and Australia) study better, and ~40–50k new students join us every week. We are...

T-Systems Iberia is seeking a Senior Software Developer with Java, Angular and DevOps skills to design, implement and maintain back-end, front-end and DevOps solutions for a broad range of business challenges. You will work with product owners and cross-functional teams to understand needs, improve products and services, and increase operational...

Runware is seeking an experienced Sr.Full-Stack Software Engineer for a fully remote, contract-based position (~15 hours/week).You will tackle AI training tasks, code evaluation, and problem solving across front-end and back-end systems.You'll work with Python, React, JavaScript, and other languages, building APIs, data models, and debugging across...

Lognext, empresa tecnológica española, busca un/a Desarrollador/a Full Stack B2B para colaborar en un proyecto de innovación para un grupo internacional del sector asegurador y financiero, con fuerte apuesta por la transformación digital.La posición es 100% remota dentro de España y se centra en backend, integraciones y evolución de aplicaciones, con...

Toggl is seeking a Senior Full Stack Engineer to join a Tribe responsible for Toggl 2.0, a unified planning, time tracking, and time intelligence product.You'll own cross?functional features from API to UI, working with React/TypeScript on the frontend and Golang on the backend, with PostgreSQL as the data layer.You'll collaborate with product managers,...

JobGether is seeking a Full-Stack Engineer (Web3-DeFi) based in Spain for a fully remote role.You will own core features from day one, integrating with DeFi protocols, DEX aggregators, cross?chain bridges and crypto APIs.You'll work with the founding team to shape architecture, product direction and technical strategy while delivering high?quality, scalable...

Tempo is hiring a passionate software developer to join our engineering team.You will work on flagship products such as Tempo Timesheets, Capacity Planner and Financial Manager for Jira Cloud, collaborating with product managers, designers, developers, QA engineers, and writers to solve customer problems with clean code.We value autonomous, proactive...

En Mensoft Consultores buscamos un/a Senior Full Stack Developer Java + Angular con experiencia real end-to-end, capaz de trabajar tanto en desarrollo como en despliegues y entornos de producción.Se requieren al menos 4 años de experiencia, dominio de Java + Spring Boot, Angular, APIs REST, GitLab CI/CD y PostgreSQL.Se valorará experiencia con Docker y...

Anyone Ai Inc. is seeking an experienced Senior Full Stack Developer to join our globally distributed engineering team.This is a fully remote position offering the flexibility to work from anywhere and collaborate across time zones.You will design, develop, and deploy robust, scalable web applications spanning the full technology stack.The ideal candidate...

Reunion Marketing seeks a senior full-stack engineer to build across the stack, integrating AI coding assistants like Claude Code into daily workflows.You will own features end-to-end, ensuring security, testing, and data integrity for client-facing dashboards and data pipelines.The role emphasizes a top-tier production mindset and clear communication of...