372 backend developer English-speaking jobs in Madrid

Build developer interfaces, SDKs, and tools that enhance developer experience. ... Optimize backend performance, reliability, and scalability. ... Proficient in Node.js and modern backend technology stacks. ... Contribute to open‐source repositories and engage with the developer community. ... Deep understanding of developer experience (DX) and product‐focused engineering.

# Java Backend Developer (m/f/d)Reus, Granada, Valencia, Seville, Gijon, A CorunaProfessionalRegularT-Systems ... developer** to join our development team, with the possibility of working from our offices in **Reus ... Developer** with strong technical skills in Java development, experience with AI tools, and the ability ... TaskAt **T-Systems**, a leading multinational in digital transformation, we are looking for a **Java Backend ... user experience and data-based decision-making.#### Responsibilities* Development and maintenance of backend

Backend Developer ( Java + Python) 100% remoto Santa Cruz de Tenerife, Canary Islands, Spain 3 weeks ... Python Developer (Build & Release Engineer) Full Stack Django Developer (Fully Remote) Madrid, Community ... Referrals increase your chances of interviewing at Kake by 2x Sign in to set job alerts for "Back End Developer ... Hiring Globally About The Role We're looking for experienced Senior Golang Engineers to join our growing backend ... What You'll Do Build and maintain robust backend services in Golang Design scalable solutions with MongoDB

Overview We are currently looking for an experienced Backend Developer with strong expertise in LangChain ... If you're passionate about AI agents and enjoy working on innovative backend architectures, this role ... with LangChain and/or LangGraph Experience working with Agentic AI frameworks Strong background in backend ... Design and build AI Agents using LangChain / LangGraph Further development and optimization of existing backend

What We're Looking For Strong experience as a Backend Developer with Ruby on Rails. ... Senior Backend Developer (Ruby on Rails) Madrid, A Coruña, Salamanca, Barcelona, Ciudad Real | Hybrid ... Your Mission We are looking for a Senior Backend Developer (Ruby on Rails) to help us continue evolving ... Build backend solutions using Ruby on Rails and related technologies. ... Technology Stack Backend Ruby on Rails Elasticsearch Sidekiq Redis MySQL REST APIs Frontend JavaScript

of our clients for a backend/full stack engineer role. ... Join to apply for the Ruby on Rails developer (42K€-58K€) role at Joppy We are hiring on behalf of one

API Developer - Cloud Solution Developer As a Cloud Solution developer you are the responsible of develop ... Your Impact as Cloud Solution Developer: What are you going to do As a Cloud Solution Developer, you ... Integrate the APIS and Backend process with different Legacy system and Cloud Services. ... solution of backend and process under Azure PaaS, following the guidelines of de NN Architecture. ... Key responsibilities include: Design and develop backend component integrated with Azure PaaS.

how backend decisions impact SEO. ... Hiring Across Tech Stacks | We are seeking a skilled Senior Front-end Developer with expertise in NextJS ... job poster from BeInCrypto Global Technical Recruiter | ICF-Certified Career & Life Coach | Expert in Developer ... Integrate the frontend with backend services, prioritizing efficient data flow, user experience, and ... Familiarity with frontend-backend integration in a microservices environment, with an understanding of

in scaling and evolving their backend systems. ... We are working with a product‐led company looking to hire a Senior Rails Developer to play a key role ... The Role As a Senior Ruby on Rails Developer, you'll be instrumental in building and maintaining core ... You'll be responsible for Developing and maintaining backend systems and internal tools Translating business

Developer Department: Cyber Services and Capabilities Employment Type: Full Time Location: ESP Madrid ... Description NCC's Threat Intelligence engineering team is looking for a Developer to support analysts ... Essential Capabilities and Understanding Proficiency in Python and Bash, particularly in connecting backend ... monitoring, and maintaining our existing Python application extensions and CLI tooling Connecting diverse backend ... creative thinking to build new solutions from the ground-up Preferable Capabilities and Understanding Backend

Lead Backend Developer role requires deep product knowledge and the ability to create deliverables like wireframes and prototypes. Candidates need 5+ years of interactive or visual design experience and proficiency in design tools.

Have worked on enterprise backend software, infrastructure, or developer tooling. ... Have experience with .NET or Python backend products. ... Care deeply about developer productivity and engineering quality. Why join JetBrains? ... Ever since we started, back in 2000, we have strived to make the strongest, most effective developer ... proactive and excited by complex engineering challenges at the intersection of production systems, developer

About the Role: We are looking for a Senior Full Stack Developer to drive the ongoing evolution of a ... Responsibilities: Backend & Architecture: Design, develop, and maintain RESTful APIs in .NET / ASP.NET ... Requirements: Experience: 4–5 years in Full Stack or Backend software development (minimum 3 years with ... React patterns (Hooks, Context), implement state management, and integrate client-side components with backend ... DevOps, Quality & AI: Work in Microsoft Azure environments, support CI/CD pipelines, execute frontend/backend

Automate security checks and developer workflows. ... Improve developer security practices and provide technical guidance. ... Experience securing backend systems, REST APIs, and microservices. ... Identify security vulnerabilities across backend services, APIs, mobile applications, and web platforms

A strong support network from our developer's team and backend guild. ... A people-first culture and a role where you'll grow as a developer and make a real impact. ... As a .NET Developer at Mjølner Informatics in Madrid, you typically enter into a number of projects for ... Frontend, Backend and Architecture, IT Security) to grow your knowledge or strengthen your current technology ... Preferably you have a University degree or equivalent and a minimum of 5 years' experience as a .NET developer

Claude Code) to improve developer experience and delivery. ... Proactive learner with pragmatic adoption of AI‐assisted developer tools (for example GitHub Copilot, ... Key Responsibilities As a Backend Engineer within Advanced Analytics (DA3) in the Chief Data & AI Office ... backend services and REST APIs powering AI‐enabled solutions: clean interfaces, robust domain models ... As a Backend Engineer, you are in charge of the following responsibilities: Design, build, and maintain

ABOUT THE ROLE As a Backend Developer (Go) , you will play a key role in modernizing a large‐scale platform ... This role focuses on building resilient backend foundations, influencing architectural decisions, and ... MUST HAVES Bachelor's degree in Computer Science or related field ; 5+ years of backend software development

AI/ML Software Architect & Lead Developer (SAFEPLACE) We are seeking an AI/ML Software Architect to join ... Proven experience as a hands‐on Software Architect, Lead Developer, or Senior Full‐Stack Engineer in ... Designing scalable backend systems and APIs using Python and FastAPI. ... Experience designing distributed and scalable backend architectures. ... Strong hands‐on experience in full‐stack software development encompassing frontend (React), backend

You'll be mainly using backend Python and SQL. ... Data Scientist / Quantitative Developer (Python Maths) Madrid onsite to €150,000 Are you a mathematically ... preferred, MSc or PhD advantageous You have commercial experience in a Data Scientist or Quantitative Developer ... early finish for drinks on Fridays Apply now to find out more about this Data Scientist / Quantitative Developer

Background in a platform, infrastructure, or developer experience team. ... What You'll Do Build the Foundation: Design and develop the shared backend services and APIs that our ... About The Role We are looking for a fullstack engineer with a strong backend center of gravity who enjoys ... Genuine fullstack capability: comfortable working in a modern React/TypeScript codebase, even if backend ... equivalent practical experience. 5+ years of experience in a software engineering role, with a clear backend