70 backend developer English-speaking jobs in Catalonia
Ruby Developer
- Titan OS
- Barcelona
- March 30
Developer, Communication Platform (100% Remote friendly within Spain) Fullstack Developer Senior (Ruby ... Freelance Software Developer (Ruby) - AI Trainer Freelance Ruby on Rails + Hotwire Developer — High-Performance ... The backend is the backbone of our business, enabling seamless interactions between our customers and ... Website Python Backend Junior Software Engineer - Remote 4 days a week (Europe) Barcelona, Catalonia ... (Ruby) at Tech Platform (Remote, PH-based) Full Stack Developer (She/He/They) - Insurance Full Stack
Backend Python Developer
- Delfos
- Barcelona
- April 1
Your Mission
Interested in working with an AI Data Platform supporting sustainability, with backend ... About the Position
We are looking for a Mid‑Level Python Developer to strengthen our team and further
Backend Python Developer
- Delfos Energy
- Barcelona
- March 30
Your Mission
Interested in working with an AI Data Platform supporting sustainability, with backend ... Your Profile
We are looking for a Mid-Level Python Developer to strengthen our team and further boost
Junior Software Engineer
- REVER (YC S22)
- Barcelona
- April 1
Related roles Backend Developer ( Java + Python) 100% remoto Junior Software Engineer (Core-Features) ... As a Software Developer You Will Work on the most challenging problems within the eCommerce space Build ... specific experience because we have a fit for both junior and senior profiles, both in frontend and backend ... Right now we are 40 people in total, 10 in the product team and we are looking for Software Developers (backend
AI-First Developer / Builder (Python & Full-Stack)
- GenLayer Labs
- Barcelona
- April 3
Experience building APIs or backend systems. ... Role Overview
AI‑First Developer / Builder – we are hiring a developer to work on prototypes, tools, ... Prototype AI‑assisted developer workflows. ... Design small full‑stack applications (backend + simple frontend).
Backend Developer – Connected Insights
- AstraZeneca
- Barcelona
- April 1
The ideal candidate will be an experienced Backend Software Engineer / Java Developer with a strong knowledge ... The Role
We are looking for a skilled back‑end developer to join our team in building innovative applications
Backend Developer / Tech Lead
- N26 GmbH
- Barcelona
- April 7
Code, GitHub Copilot) to accelerate delivery without compromising code integrity or security.Modern backendSenior Technical Product Owner – Basket & Payment
- Hays
- Barcelona
- May 2
Drive continuous improvement in developer productivity and developer experience, ensuring high-quality ... Strong hands-on technical background (e.g., Backend Engineer) with the ability to lead cross-functional
Developer TypeScript / Node.js (all genders)
- valantic DXA
- Barcelona
- April 29
You develop scalable web applications consisting of a Node.js based GraphQL interface (Apollo) in the backend ... Your mission
As Developer TypeScript / Node.js (all genders) you will support our client - a global ... Your profile
As a TypeScript / Node.js developer, you have extensive experience in the development
Senior Mobile Software Engineer
- leadtech
- Barcelona
- April 1
Working closely with product managers, designers, and backend engineers, you’ll be instrumental in defining ... As a Senior iOS Developer (Tech Advisor), you’ll play a vital role in shaping the mobile experience for ... YOUR MISSION As a Senior iOS Developer at Leadtech, you will: Oversee the external development and maintenance ... ABOUT THE ROLE Due to continuous growth, our Mobile Development Team is excited to welcome a Senior iOS Developer
Senior Software Engineer
- Wizeline
- Barcelona
- April 3
Qualifications 7+ years of experience as a Frontend Developer. ... You will work closely with Product, Design, and Backend teams to ensure high-quality, accessible, and
Lead/Senior Software Engineer
- Rover.com
- Barcelona
- April 12
great mentorship skills
Your Qualifications
7+ years of experience as a professional software developer ... development
Strong and proven knowledge of ReactJs or React Native
Experience with Python or another backend
Senior .Net Developer
- NTT DATA Europe & Latam
- Barcelona
- May 1
Familiarity with AI-assisted coding environments and developer productivity tools. ... Experience integrating with backend services or APIs Familiarity with version control systems and CI/
Backend Engineer (f/m/d)
- Mytheresa
- Barcelona
- April 20
To support our Backend Engineering team we are searching for a Backend Engineer (f/m/d) to be based in
AI Web3 Backend Engineer – AI Agent Economy
- DcentraLab
- Barcelona
- March 31
Overview We are looking for a AI Web3 Backend Engineer with deep expertise in DeFi protocols, backend ... This role requires someone who is as comfortable deploying large-scale backend systems as they are with ... Requirements Backend engineering expertise: strong experience in designing and deploying distributed ... Responsibilities Architect and implement the Traia.io AI Agent Marketplace backend and deployment infrastructure
FullStack Engineer - Marketplace (m/f/d)
- MEDIA MARKT ESPAÑA
- Barcelona
- March 31
Create backend services following the API First principle. ... Experienced in developing backend systems with NodeJS. ... Develop interfaces between our backend APIs and consumer touchpoints.
Senior .Net Engineer
- Chrona agency
- Barcelona
- March 30
This role is focused on high-performance backend development for the exchange core and surrounding ecosystem ... core exchange infrastructure and trading systems Designing and building high-throughput, low-latency backend ... of a next-generation trading platform What were looking for 5+ years of experience with C# / .NET backend ... Strong system design and backend architecture skills Tech stack C# / .NET (latest versions) High-performance ... backend architecture In-memory processing Modern infrastructure and cloud tooling What we offer Opportunity
Cloud Backend Engineer
- Signaloid
- Barcelona
- April 29
Responsibilities
Lead the implementation of extensions to the Signaloid Cloud Compute Engine backend ... Be responsible for extending the testing and QA infrastructure of the Signaloid Cloud Compute Engine backend ... engineering, computer science, or a related discipline
More than three years of experience working as a backend ... test‑driven development
Some exposure to frontend development; comfort occasionally working outside the backend
Expert, Embedded Software Developer
- Schneider Electric
- Barcelona
- April 12
Senior Embedded Software Developer
As a Senior Embedded Software Developer, you will design, implement
Senior Software Engineer - Backend
- Quadrivia
- Barcelona
- April 3
Key Responsibilities Implement, and maintain backend service (not tiny microservices—well-designed ... What Success Looks Like Quadrivia’s backend systems become a global reference for reliability, safety ... The Role You will design and build the backend systems powering the Quadrivia clinical AI platform—including ... experience working under SOC2/ISO27001, HIPAA/GDPR, or medical device regulatory requirements. 10+ years in backend









