Search current freelance ruby on rails developer jobs, vacancies, and employment in Barcelona, España on Jobeax. 2,765 freelance ruby on rails developer jobs in Barcelona, España.
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Titan Operating System
... ranking/recommendation models from large‑scale interaction logs. - Design offline metrics and analyze results. Help set up or monitor online A/B tests; turn findings into iteration plans. - Expose recommendation APIs and integrate them with our existing Go / Ruby services. - Contribute to CI/CD pipelines for data & model versioning (GitHub ...
Spain, Barcelona
Remedy Edge
About the role We're looking for a Freelance PowerPoint Specialist with exceptional PowerPoint design skills to transform complex information into clear, engaging, and visually compelling presentations. You'll work closely with strategy, medical, creative, digital, and account teams to create presentations that communicate ...
Spain, Barcelona
100k
... https://jobeax.com/link/JSd7UYCSg572jJDY, Ruby on Rails, Scala/Play, PHP, or Go, you’ll feel right at home here. Python experience isn’t required. We make decisions based on data and real user feedback: running A/B tests, shipping iteratively, and constantly improving. We also put a strong focus on observability, monitoring, ...
Spain, Barcelona
MarketFully
Remote · Freelance · Ongoing project work About MarketFully Group We're a content agency helping global brands create and localise search-focused content across languages and markets. We work with in-house marketing teams to deliver content that's accurate, on-brand, and built to rank. The opportunity We're growing our ...
Spain, Barcelona
Utopia in Barcelona is seeking an on-site MEP Engineer to support the construction of a luxury project in Pedralbes. This fully onsite role requires relocation to the Barcelona region. You will collaborate with architects, interior designers, structural engineers, and client representatives to ensure top-quality project ...
Spain, Barcelona
Core Code io is seeking a Payroll Specialist to manage comprehensive payroll operations, ensuring accuracy and on-time payments. The role requires handling sensitive employee data with discretion and collaborating with HR and Finance to resolve payroll issues. The ideal candidate will be proficient with Excel, payroll software, ...
Spain, Barcelona
Factorial HR
... English-speaking environment where your technical acumen, creative problem-solving abilities, and passion for user-centric products will directly contribute to our mission of improving HR processes for SMEs worldwide. It’s your choice to work from home, in our Barcelona offices, or mixing both. Our stack is Ruby on Rails for the ...
Spain, Barcelona
Social You
50k - 60k
... pipelines to deploy Infrastructure as Code (IaC)and usage of tools (e.g., ADO, GitHub/Actions, Jenkins, or equivalents).Proven ability to manage infrastructure environments, configurations and workflows via self-service automationProficiency in scripting languages: e.g. Python, Perl, Ruby, PowerShell, YAML, KQL, otherProficiency ...
Spain, Barcelona
A leading AI solutions provider in Barcelona is seeking a Senior AI/ML Engineer. This role involves developing and deploying AI initiatives, focusing on the full lifecycle of machine learning solutions. The ideal candidate will have strong programming skills, expertise in MLOps, and a passion for driving real-world impact ...
Spain, Barcelona
jobtraffic
42000 €/año
... Technologies seleccionamos un/a Backend Developer para unirte a un equipo internacional de IT y participar en el desarrollo, implementación y optimización de componentes de software de gestión de almacenes y control de transporte para grandes empresas del sector. ¿Cuáles serán tus funciones principales? - Diseño y desarrollo ...
Spain, Barcelona
€45,000 - €68,000 al año
... proyectos simultáneamente - Experiencia en diseño responsivo y desarrollo web - Conocimiento de accesibilidad digital (WCAG) - Portafolio digital actualizado con proyectos realizados Beneficios, requisitos adicionales y detalles - Modalidad: Freelance/Tiempo Parcial con posibilidad de convertirse en proyecto a largo plazo ...
Spain, Barcelona
Blu Selection is seeking an energetic freelance sourcer/recruiter to own the Dutch-speaking market track for a high-visibility project in Barcelona. You will find, engage, and pipeline top commercial sales and tech professionals to support our client's European expansion. As a contractor, you’ll collaborate with Blu's team ...
Spain, Barcelona
Barcelona Supercomputing Center
... Autosubmit web graphical user interface - Help to maintain the current operation on different HPC platforms - Contribute to user support by deploying patches - Contribute to the documentation including all the new developments and features in the existing manuals Job title Web developer (RE2) About BSC The Barcelona Supercomputing ...
Spain, Barcelona
Tripledot Studios
2500
... looking for a AI Playable Ad Developer. To succeed in this role, you will need to offer a great gaming demo experience for a very large audience. You will be converting our existing games into playable HTML5 games and creating tools to ease basic advertising creation. Key Responsibilities - Developing creative ads in Playable ...
Spain, Barcelona
ETL NEXUM
... (deducciones I+D+i, art. 35 LIS). Trabajamos con family offices, fondos de inversión, grandes empresas y productoras, canalizando su tesorería hacia proyectos con retorno fiscal certificado. Buscamos Una persona senior, con instinto comercial y capacidad de generar y cerrar relaciones institucionales, para liderar el crecimiento ...
Spain, Barcelona
€45,000 - €65,000 a year
About the role We are seeking a talented Senior Full-Stack Developer to join our innovative technology team in Barcelona. This is a Full-time, on-site position where you'll be responsible for designing, developing, and maintaining robust web applications using modern technologies. You'll work on exciting projects that impact ...
Spain, Barcelona
Qaracter - Beyond your Challenge
... Developer - Databricks para incorporarse a un proyecto estratégico dentro del sector financiero, participando en el diseño, desarrollo y optimización de soluciones avanzadas de tratamiento, explotación y análisis de grandes volúmenes de datos. Formarás parte de un entorno tecnológico innovador donde contribuirás al desarrollo ...
Spain, Barcelona
€65,000 - €85,000 a year
... an experienced Senior Full Stack Developer to join our innovative technology team in Barcelona. This is a permanent position offering the opportunity to work on cutting-edge web applications and scalable backend systems. You will be responsible for architecting solutions, mentoring junior developers, and driving technical ...
Spain, Barcelona
Capitole, con base en Barcelona, busca un Desarrollador Backend Python para construir y evolucionar la plataforma interna que soporta al equipo de IA. El rol es activo en una arquitectura orientada a eventos, con gestión de colas y contenedores Docker. Se valorará experiencia en FastAPI/Django/Flask, sistemas distribuidos ...
Spain, Barcelona
... tattoo industry. The company combines education, technology, eCommerce, and in-person experiences within an international ecosystem. Задачи: - Build new functionalities using Vue 3 and Nuxt 3 - Develop fast, accessible, and responsive interfaces - Design reusable components following a common Design System - Collaborate ...
Spain, Barcelona