665 backend developer English-speaking jobs in Spain
Senior QA Automation Engineer | TypeScript, Node.js, WebdriverIO, API Testing
- Serviclients
- Chazo
- June 6
Read and understand Node.js backend code to create smarter and more relevant tests. ... used globally by professionals, students, partners and enterprise learners, with a strong focus on backend ... Backend-focused QA, not just UI automation You'll go deep into APIs, service contracts, provisioning ... What your day-to-day will look like in this project Design and maintain automated tests for backend services ... Mission of the role Your mission will be to design, build and own automated test coverage for three key backend
Senior QA Automation Engineer | TypeScript, Node.js, WebdriverIO, API Testing
- Serviclients
- Valencia
- June 6
Read and understand Node.js backend code to create smarter and more relevant tests. ... used globally by professionals, students, partners and enterprise learners, with a strong focus on backend ... Backend-focused QA, not just UI automation You'll go deep into APIs, service contracts, provisioning ... What your day-to-day will look like in this project Design and maintain automated tests for backend services ... Mission of the role Your mission will be to design, build and own automated test coverage for three key backend
BESS Solutions Engineer
- Atlas NextWave
- Andalusia
- June 14
We are supporting a growing renewable energy developer and IPP on the appointment of a BESS Procurement ... BESS solutions with developers and IPPs, and who can bring that supplier-side perspective into the developer
Senior Backend Engineer (Python or OOP)
- E-Frontiers
- Madrid
- June 5
We are currently working with a fast-growing international fintech, seeking a Senior Backend Engineer ... What you'll do: Develop and maintain scalable, reliable backend systems that power key financial operations ... culture Hybrid model: 4 days in the office, 1 remote Your profile: Strong experience building complex backend
C++ Software Engineer (real-time)
- Matchtech
- Madrid
- June 17
Do you have strong experience in C++ and enjoy working on complex backend services? ... Key Responsibilities Develop and maintain high-performance backend applications using C++ on Linux Work ... You will contribute to the design, development, and evolution of critical backend systems used in international
Senior Software Engineer
- Indra Group
- Madrid
- May 27
Advanced knowledge of C and Shell scripting for backend development. ... Design, develop, and maintain backend solutions using Java technologies. ... Implement backend components using C and Shell scripting in Linux environments. ... Troubleshoot, debug, and resolve software issues across backend and frontend components.
Full Stack AI Engineer
- Shakers
- Spain
- May 23
Backend Stack: Solid proficiency in .NET and/or Java / Spring. ... You will work across the full technology stack, from frontend to backend APIs, business logic, and database ... Key Responsibilities Full-Stack Execution: Implement end-to-end features spanning user interfaces, backend ... Full-Stack Mastery: Solid proficiency in full-stack development, with a strong depth in either frontend or backend
Full Stack AI Engineer
- Shakers
- Vitoria-Gasteiz
- May 23
Backend Stack: Solid proficiency in .NET and/or Java / Spring. ... You will work across the full technology stack, from frontend to backend APIs, business logic, and database ... Key Responsibilities Full-Stack Execution: Implement end-to-end features spanning user interfaces, backend ... Full-Stack Mastery: Solid proficiency in full-stack development, with a strong depth in either frontend or backend
Full Stack AI Engineer
- Shakers
- Chazo
- May 23
Backend Stack: Solid proficiency in .NET and/or Java / Spring. ... You will work across the full technology stack, from frontend to backend APIs, business logic, and database ... Key Responsibilities Full-Stack Execution: Implement end-to-end features spanning user interfaces, backend ... Full-Stack Mastery: Solid proficiency in full-stack development, with a strong depth in either frontend or backend
Full Stack AI Engineer
- Shakers
- Cequelinos
- May 23
Backend Stack: Solid proficiency in .NET and/or Java / Spring. ... You will work across the full technology stack, from frontend to backend APIs, business logic, and database ... Key Responsibilities Full-Stack Execution: Implement end-to-end features spanning user interfaces, backend ... Full-Stack Mastery: Solid proficiency in full-stack development, with a strong depth in either frontend or backend
Full Stack AI Engineer
- Shakers
- Valencia
- May 23
Backend Stack: Solid proficiency in .NET and/or Java / Spring. ... You will work across the full technology stack, from frontend to backend APIs, business logic, and database ... Key Responsibilities Full-Stack Execution: Implement end-to-end features spanning user interfaces, backend ... Full-Stack Mastery: Solid proficiency in full-stack development, with a strong depth in either frontend or backend
Artificial Intelligence Engineer
- Oliver Bernard
- Madrid
- May 29
This suits someone who enjoys hands-on backend engineering as much as applied AI work. ... financial use cases Build and maintain LLM applications, RAG pipelines, and AI agents Develop scalable backend ... Production experience with LLMs and modern AI tooling Experience with: PyTorch or TensorFlow FastAPI / backend
Mid/Senior Product Growth - Engineering
- Factorial
- Barcelona
- June 5
Typically, our tasks are 75% Frontend and 25% Backend. ... At Factorial, we're looking for a Full-Stack Senior / Mid Product Developer to help us boost our team
Performance Engineer
- Joppy
- Barcelona
- June 3
Experience with frontend monitoring frameworks and developer tools. ... development, including: Performance optimization techniques (lazy loading, caching, CDN, minification) Backend
Senior Python Developer
- Digital Waffle
- Catalonia
- June 8
Role: Backend Engineer - Python/AWS Salary: €80,000-€90,000 Location: Barcelona-Based Remote Working ... What you'll be doing: Build and scale modern Backend applications using Python (FastAPI) Work closely ... Contribute to Backend architecture, component systems and overall engineering standards Collaborate with
Senior Software Engineer - AI Product development (Barcelona)
- Clarivate
- Barcelona
- June 17
Nice to have: experience working with Java in backend environments. ... Write clean, well‑tested, and well‑documented code, following backend best practices. ... Design, develop, and maintain Java backend services and APIs in microservices architecture. ... AI Product Development to join our Cortellis CMC team in Barcelona, where you’ll work on high-impact backend ... systems using TypeScript, Node.js (Nest.js). 5+ years designing and maintaining scalable backend services
Senior Software Engineer - AI Product development
- Clarivate
- Barcelona
- May 16
Write clean, well‑tested, and well‑documented code, following backend best practices. ... Design, develop, and maintain Java backend services and APIs in microservices architecture. ... AI Product development to join our Cortellis CMC team in Barcelona, where you’ll work on high-impact backend ... It would be great if you also have
Experience working with Java in backend environments
Experience ... systems using TypeScript, Node.js (Nest.js)
5+ years designing and maintaining scalable backend services
Salesforce Developer
- Coforge
- Madrid
- June 13
Role : Salesforce Developer Skills : Salesforce, Apex, LWC, Visualforce, and Java and API Location : ... As a Salesforce Developer, you will play a vital role at Coforge and our final customers. ... Madrid Spain (Hybrid) Type : Permanent We are at Coforge hiring for Salesforce Developer with Apex, LWC ... effectively with business stakeholders / other Salesforce team members Certified Salesforce Platform Developer
Mulesoft developer
- InterEx Group
- Cequelinos
- June 5
MuleSoft Developer | Spain | Remote | 12-Month Contract Are you an experienced MuleSoft Developer ready ... reusability across integration workstreams What We're Looking For: Proven hands-on experience as a MuleSoft Developer
Mulesoft developer
- InterEx Group
- Spain
- June 5
MuleSoft Developer | Spain | Remote | 12-Month Contract Are you an experienced MuleSoft Developer ready ... reusability across integration workstreams What We're Looking For: Proven hands-on experience as a MuleSoft Developer


















