Tech jobs

Python Developer (Streamlit) - Hasta €50.000 Al Año

JavaScript Python Streamlit

¿Te gustaría seguir desarrollándote como Streamlit Developer en un entorno internacional, formando parte de un equipo ágil y rodeado de perfiles senior de primer nivel? Desde Oxigent Technologies buscamos un/a Python…

Triangle Talent - Solutions RRHH

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Desarrollador/A Backend Senior Java-Spring Boot-Microservicios - €35.000 - €40.000 Al Año

API AWS Bootstrap CI/CD Cloud +13 skills

Senior backend developer role in Madrid (with telework) focused on designing, developing and maintaining scalable applications, REST APIs and microservices using Java and Spring Boot, participating across the full software lifecycle with emphasis on quality and performance. Permanent contract, €35,000–40,000/year.

35K – 40K €

Serviguide-Bpo

Desarrollador/A Backend

Backend developer in Madrid building and integrating services, APIs, and microservices in Go (Golang). Day-to-day work involves databases, REST services, and messaging systems.

API Go

Ad4octogono

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Desarrollador Backend Java - Español / Contractor - €30.000 - €35.000 Al Año - Remoto

API Java Jdbc JPA Kafka +1 skills

Senior Java backend developer (100% remote from Spain) on a large-scale project: designing and maintaining Spring Boot services across multiple repositories, working with event-driven architectures and Kafka, and evolving legacy systems in an international team. Requires 4+ years of Java experience.

30K – 35K €

Fistrek

Desarrollador Java Backend Aso – Remoto - Remoto

Remote Java backend developer building ASO services and backend components on the APX platform for strategic financial-sector projects. Requires banking environment and transaction-implementation experience; knowledge of proprietary architectures like Ether is a plus.

Java

IndraGroup

Desarrollador/A Backend .Net

AI API CI/CD Cloud Cloud Native +6 skills

Senior Backend .NET developer designing scalable backend services and REST APIs for digital transformation projects — modernizing legacy applications and building new cloud-native solutions — alongside architecture, frontend, DevOps and business teams in agile, hybrid work in Spain.

SlashMobility

Frontend Developer

Angular Bootstrap Java JavaScript jQuery +1 skills

Frontend developer in Madrid building web solutions at a digital transformation consultancy that delivers mobile, web and AI apps for many clients. Day to day you develop with Angular, jQuery, Bootstrap and JavaScript, and are comfortable touching Java JSP backend code.

The BIG Jobsite, La Fosse

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Frontend Developer - €200 - €300 A Day - Remote

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Remote frontend developer role paying €200–€300 per day. The developer builds responsive user interfaces for customer-facing and internal platforms, integrating with PHP environments and working with cross-functional teams.

Senior Frontend Developer - €300 - €400 A Day

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On-site contract role in Spain for a senior frontend developer building conversion-focused interfaces for public websites and internal tools in a PHP environment. Day to day: HTML5/CSS3/JavaScript (ES6+), jQuery, Twig templating, SASS/BEM, A/B testing and performance optimisation.

Senior Frontend Developer - €300 - €400 A Day

AI CSS HTML JavaScript jQuery +5 skills

Contract Senior Frontend Developer building high-performance, conversion-focused interfaces for public websites and internal tools in PHP environments, using HTML5/CSS3, JavaScript, jQuery, Twig templating and SASS/BEM, plus A/B testing and performance optimisation. Day rate €300–€400, start ASAP, open-ended.

300 – 400 € / day

Talent

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Senior Frontend Developer (Gijón) - €300 - €400 A Day

A/B Testing AI CSS HTML JavaScript +6 skills

Day-rate (€300–€400) frontend developer role based in Gijón, Spain: building high-performance web UIs, running A/B tests, and ensuring cross-browser compatibility while collaborating with cross-functional teams.

300 – 400 € / day

Airbus Helicopters

Connectivity Systems Engineer – Avionics & Data Links

Airbus Helicopters España in Getafe seeks a systems engineer to own functional and system design of connectivity (avionics and data links) for new technology projects, performing system-level integration within the Mission System department and contributing to the FireFighting24H project team.

Oxigent Technologies

Data Scientist/Forecasting ML Engineer

Feature Engineering Machine Learning MLOps Python Snowflake

Data Scientist/Forecasting ML Engineer at Oxigent Technologies (Madrid-based team, 100% remote possible in Spain) developing time-series demand forecasting models for a biopharma-sector project. Day to day: refactoring Dataiku/notebook code into clean modular Python, structuring data in Snowflake, and working with an MLOps architect on containers and pipelines.

48K – 53K €

Ilerwork

Civil Engineer - Data Center Projects (Hybrid, Flexible)

ILERWORK busca un/a Ingeniero/a Civil para desarrollar proyectos de Data Centers y obras civiles complejas en un entorno híbrido. Se integrará en un equipo multidisciplinar y participará en todas las fases, desde el…

AutoCAD BIM Revit

Mondelez International

Remote Data Platform Engineer - Full Stack & Analytics

AI Data Engineering Data Pipelines

Mondelez International's Media Data Platform team seeks a full-stack engineer with a strong data engineering background to build secure, scalable data products — data pipelines, dashboards, and AI-driven insights — in collaboration with vendors and internal stakeholders, following governance best practices. Role is based in Spain.

Mondelēz International

Data Platform Engineer - Full-Stack & Analytics

AI Analytics Cloud Data Pipelines

Mondelēz International is hiring a Full Stack Data Platform Engineer in Spain to build and scale data pipelines and analytics for media data. Day to day they design cloud-based data solutions, drive data migrations and governance, partner with vendors, and deliver insights via internal dashboards and AI-driven tools.

Barcelona Supercomputing Center

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Data Manager – Data Research Engineer (Re2) – Ai4S

AI Bash Data Governance HPC Linux +1 skills

About BSC The Barcelona Supercomputing Center - Centro Nacional de Supercomputación (BSC-CNS) is the leading supercomputing center in Spain. It houses MareNostrum, one of the most powerful supercomputers in Europe, was…

Barcelona Supercomputing Center

Data Research Engineer & Data Steward (FAIR)

Bank Julius Bär & Co. Ltd.

Data management role at the Barcelona Supercomputing Center's AI Institute: the person builds data catalogues and data services, implements automated data procedures, and ensures data standards and security across BSC projects, working in Linux environments with FAIR/Open Science practices.

AI Linux

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Senior Data Engineer: SQL Mastery for Financial Data