413,122+ Full Stack Engineer Python React Jobs in Spain — Top Companies Hiring September 2026

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Backend Engineer: Scalable Data Platforms on Azure

Kureos is seeking an experienced Backend Engineer in Madrid to build scalable data platforms and cloud infrastructure powering energy trading decisions. You will develop robust APIs, data pipelines, and high-availability services as part of a cross-functional engineering team. You’ll work with Python, ...

Agentic AI Engineer: Scalable AI Agents for Discovery

AgileEngine seeks an Agentic AI Engineer to design and build autonomous AI agents that analyze ServiceNow Discovery logs, classify failures, perform root cause analysis, and propose corrective actions at enterprise scale using LLMs, RAG, and vector stores. You will leverage deep Python production exper ...

DataOps & DevOps Engineer: Cloud, Kubernetes & Pipelines

A leading consultancy firm is seeking a DevOps & DataOps Engineer to design and maintain cloud infrastructure for data platforms. The ideal candidate will have expertise in cloud environments such as AWS and Azure, along with strong skills in containerization and Python automation. Responsibilities include leadi ...

Space Grade DevOps Engineer | Kubernetes | Flexible Hours

Indra Group is seeking an experienced DevOps / SRE Engineer to enhance our production environments. You will operate, maintain, and improve our Kubernetes platforms, ensuring system reliability and performance. The ideal candidate has a minimum of 3 years in DevOps with strong skills in Docker and Kube ...

Satellite EO Data Pipeline Engineer

PassFort is looking for a Satellite Payload Processing Engineer based in Barcelona. You will design and build processing chains to transform raw satellite data into analysis-ready Earth Observation products. This role requires strong expertise in remote sensing and proficiency in Python. Your responsib ...

Senior AI Engineer: End to End AI on Azure & LLMs

Pasiona en Barcelona está buscando un/a Senior AI Engineer con experiencia en soluciones de Inteligencia Artificial Generativa. Este rol implica desarrollar modelos de IA de extremo a extremo, optimizar sistemas backend y colaborar con equipos de Data Science. Se requiere sólido conocimiento en Python, ...

Machine Learning Software Engineer — Flexible Work

Prima in Madrid is seeking a Software Engineer - Machine Learning to join their Engineering team. In this role, you will leverage machine learning and data analytics to identify risks in the claims management platform and contribute to the company’s growth. The ideal candidate has a strong Python backg ...

Lead AI Engineer Generative AI & Data Science Solutions

GFT Technologies España busca un/a Lead AI Engineer (Generative AI & Data Science Solutions) para unirse a su equipo en Valencia. Este papel implica desarrollar soluciones avanzadas en Inteligencia Artificial y Data Science y liderar un equipo multidisciplinario. Se requiere una sólida experiencia en D ...

AI Driven Code Quality Engineer | Secure DevOps

T-Systems Iberia is seeking an AI SWE / Code Quality Validation Engineer to join our Spain team. You will leverage AI tools to validate code quality and security across large codebases, delivering actionable findings for enterprise assurance. Ideal candidates have 5+ years in software engineering, stro ...

BigQuery Data Engineer for Scalable BI & Analytics

ACCOM, empresa de Marketing Digital orientada en ventas, busca un Data Engineer especializado en BigQuery para nuestro Equipo de Datos & BI. Buscamos perfiles con experiencia sólida en diseño y arquitectura de datos en BigQuery y entornos GCP. Te incorporarás diseñando y optimizando el Data Warehouse e ...

Early Career AOCS/GNC Engineer Hybrid Madrid

Airbus Defence and Space SAU in Madrid seeks a motivated avionics engineer to contribute to AOCS/GNC design and verification across Phases 0–E, with exposure to flight algorithms and hardware. You will develop prototype software in Matlab/Simulink (occasional C/Python), prepare design justifications and softw ...

Senior Backend Engineer, Real Time Data (Remote)

Tinybird is seeking a highly experienced Backend Engineer to build and operate complex data systems and expose them as reliable APIs. You will work close to production, improving observability, performance, and reliability. Strong Python skills are a must, and English and Spanish fluency help with asyn ...

Site Reliability Engineer — Remote & Flexible Hours

Exoscale is hiring a Site Reliability Engineer to ensure constant availability of the platform across Europe. You will design and maintain operating systems, hypervisor fleets and container runtimes, contributing to automation and deployment tooling. The role supports remote work within the EU, with ex ...

Junior Modeling & Simulation Software Engineer

Airbus Defence and Space SAU is seeking a Junior Software Engineer (Modeling and Simulation) to contribute to the development and maintenance of advanced simulation tools for aerospace systems. You will design, implement, test, and document models, collaborating across software and hardware teams in a multidi ...

AI Presales Solutions Architect

HP is seeking an AI Software Presales Solutions Architect Engineer to lead the promotion and sale of cutting-edge AI software solutions. You will combine deep AI knowledge with strong communication to align technical capabilities with business goals, and collaborate with the business development team to drive ...

Remote ML & Simulation Engineer for DeFi Risk

Cenit.Finance is a web3 tech startup building analytics for DeFi risk and capital efficiency. We are looking for a Machine Learning & Simulation Engineer to grow our core agent-based simulation engine and ML models in Madrid or remotely. You will develop models, extract insights for customers, and work ...

Hands on AI Engineer: GenAI, LLMs & Production Apps

Werfen is seeking an AI Engineer to design, build, and deploy AI solutions across ML, DL, and Generative AI. You will implement LLMs, RAG, agents, and predictive models, while engineering micro-services and APIs to production. Collaboration with senior engineers and business stakeholders is essential t ...

RF Radar Engineer — Hybrid/Remote, Flexible Hours

NOVELIC, a leading provider of mmWave radar systems and perception solutions, seeks a hands-on RF-focused engineer to drive radar performance from simulation to validation. You will execute RF measurements, automate analysis with Python, and collaborate with EE and DSP teams on breakthrough features. J ...

Data Engineering Lead: AI & Analytics Platforms

Metyis is seeking an experienced Data Engineer to lead the design and implementation of scalable data platforms and AI workflows at Barcelona, Spain. You will collaborate with business stakeholders, build pipelines, and shape APIs and data services across production environments. Join a fast-growing, i ...

AI/ML Platform Engineer — Hybrid (Madrid/Barcelona/Munich)

Aily Labs GmbH is seeking a MID AI/ML Engineer to help build and scale AI/ML infrastructure powering our decision intelligence platform. You will design data pipelines and productionize AI models, collaborating with data scientists and software engineers to deliver robust, scalable solutions across the busine ...

AI/ML Platform Engineer — Hybrid (Madrid/Barcelona/Munich)

Aily Labs GmbH is seeking a MID AI/ML Engineer to help build and scale AI/ML infrastructure powering our decision intelligence platform. You will design data pipelines and productionize AI models, collaborating with data scientists and software engineers to deliver robust, scalable solutions across the busine ...

Senior Azure Data Engineer — Cloud Data Architect

VISEO IBERIA busca un Senior Azure Data Engineer para impulsar proyectos de alto impacto en Azure. Reportarás a la organización con foco en ingesta, procesamiento y orquestación de datos con ADF y Databricks, manteniendo gobernanza y calidad del dato. Requisitos: 5+ años de experiencia, Python/C#/SQL, ...

Ingeniero de Soluciones IA Generativa | Producción y API

AERTEC busca un/a AI Solutions Engineer para impulsar soluciones de IA generativa y automatización en su Centro de Excelencia de IA. Participarás en todo el ciclo, desde el diseño hasta la producción, integrando modelos con sistemas corporativos mediante APIs. El/la candidato/a ideal aporta experiencia ...

Líder Técnico IA | Staff Engineer en Nube AWS

Randstad Digital España busca un Líder técnico Staff Engineer en IA para liderar iniciativas de IA en proyectos estables en Viladecans (Barcelona). Requiere diseño y construcción de agentes IA, experiencia con Python, Go, Kubernetes y AWS. Se ofrece modalidad híbrida (3 días presenciales y 2 de teletra ...

Barcelona Data Engineer — ML & Real‑Time Analytics

Appodeal is seeking a skilled Data Engineer to join our Mobile Growth Platform UA team in Barcelona. You will be responsible for building and optimizing our data infrastructure to ensure seamless data flow across various platforms. The ideal candidate should have 3-5 years of experience, expertise in P ...

Senior LLM Engineer Quantum AI Innovator

Multiverse Computing seeks an experienced LLM Engineer (Senior and Mid level) to join our team in Spain. You will design, implement, and optimize language models, integrating them into our quantum-enabled products in a collaborative, fast-paced environment. Ideal candidates have 2+ years in transformer ...

LLM Prompt Engineer & API Integration Specialist

Chubb in Madrid is seeking a qualified Prompt Engineer and LLM Integration specialist with experience optimizing interactions with large language models through Python. The role focuses on OpenAI APIs, token management, and cross-LLM prompt strategies for varied tasks. This is a 12-month opportunity. Y ...

Developer Experience Engineer DevTools & Automation

SIX Group Services Ltd. is seeking a Developer Experience Engineer in Madrid to join their centralized DevOps Tools Team. This role involves defining and configuring development environments, focusing on secure and consistent developer profiles across various tools. The candidate will enhance developer ...

Senior Data Engineer AWS Data Pipelines & Governance

Ericsson GmbH is seeking a Senior Data Engineer in Málaga to enhance data solutions by designing and building AWS-based pipelines. The role requires expertise in data engineering, SQL, and programming in Python, while fostering collaboration within engineering teams. Candidates should have a degree in ...

Senior Test Bench Engineer Space Systems

Thales Alenia Space in Madrid Tres Cantos seeks a Senior Software Engineer to design, develop and validate software for spacecraft test benches. You will create Python and C++ tools, understand test plans and collaborate with hardware engineers to ensure reliable verification software. The role require ...

Hybrid Space Robotics & Mechatronics Engineer Impact

Indra Space in Spain is seeking a Robotics / Mechatronics Engineer for our hybrid workplace to help design space-grade mechanisms and real-time control systems. You will contribute to actuation, embedded electronics, and software across Linux, Xilinx, and VXWorks while collaborating on multidisciplinary space ...

Senior AI Driven Test Automation Engineer

DAVANTIS, una empresa líder en analítica de vídeo, busca un Senior Test Automation Engineer en Bellaterra, Barcelona. El candidato ideal tiene más de 3 años de experiencia en automatización de pruebas y habilidades en el diseño y mantenimiento de frameworks. Ofrecemos un contrato indefinido, un entorno técnico a ...

Production AI Agent Engineer for Scalable LLM Systems

Mondia in Madrid is seeking a software engineer to build production AI agents and related tooling. You will own the agent logic, data layers, and pipelines, delivering reliable, scalable systems for internal use across engineering teams. You will write clean Python, work on RAG pipelines, Postgres sche ...

Senior Test Automation Engineer: Backend & AI

Dev.Pro, a remote‑first European technology partner, is seeking a Senior Test Automation Engineer to drive end‑to‑end QA for a fintech data platform. You will own automation for backend services, AI‑related components, and complex integrations, collaborating with distributed engineering teams to ensure high q ...

Senior ML/AI Engineer — Hybrid in Barcelona

Aristocrat Leisure's Product Madness team in Barcelona seeks an experienced ML/AI Engineer to deploy models that enhance game features, player experiences, and operational efficiency. You'll refine data pipelines with Python and SQL, and contribute to projects involving LLMs, RAG systems, and agentic AI. ...

Staff Backend Engineer, MMO Servers (Hybrid in Barcelona)

Scopely is seeking a Staff Server Engineer for a new unannounced project based in Barcelona, Spain. This role involves leading the development of large-scale backend features for our game in a hybrid work environment. Ideal candidates will have experience in back-end systems for MMO games, strong leade ...

Senior Platform Engineer — Scale Healthcare Data Infra

B Capital in Barcelona is seeking a Platform Engineer to optimize and automate their infrastructure and tooling, contributing to their software development lifecycle. You will develop scalable solutions, mentor less senior engineers and collaborate with various teams to enhance technology advancements. <p ...

Senior QA Engineer Core Services & Automation

Schneider Electric is seeking a Tester / QA Engineer at Schneider Digital in Barcelona to lead software quality efforts for the Intelligent Edge platforms. You will validate deliverables, automate tests, and continuously improve QA practices across distributed architectures and microservices. Fluency i ...

Principal Forward Deployed AI Deployment Engineer

JetBrains is seeking a Principal Forward Deployed Engineer to deploy its JetBrains Central platform into complex enterprise environments. This role involves advising customer engineering teams and mentoring other engineers, focusing on AI-native development. Successful candidates will have experience in software ...

Senior Data Engineer Remote, Unlimited PTO

BlueThrone, based in Barcelona, is looking for a Data Engineer to design and manage scalable data infrastructure. This role involves building data pipelines, leading dbt projects on BigQuery, and developing BI dashboards. The ideal candidate will have over 5 years of experience in data engineering, strong Python ...

Staff ML Engineer: Lead Architecture, Mentorship & Impact

Visium in Barcelona is looking for a Staff Machine Learning Engineer to lead high-impact projects and mentor teams. This role involves guiding a technical team, contributing to ML methodologies, and translating client needs into technical solutions. Ideal candidates have 6-8 years of experience in machine learni ...

Data Engineer — Scalable Marketing Data & AI Pipelines

Q-tech, in partnership with a large European technology company, is seeking a Data Engineer to join a cutting-edge Marketing & Communication squad working on one of Europe’s largest loyalty apps with 130M users. You will design scalable data pipelines, collaborate with cross-functional teams, and contr ...

CubeSat Mission Analysis Engineer: Power, Delta V & STK

Alén Space, Spain, is seeking a Space Mission Analysis Engineer with passion for space to perform low-level mission analysis, develop technical budgets, and ensure requirements traceability. You will use STK to analyze missions, generate KPIs, and support design iterations with analytical justification. < ...

Data Lakehouse Engineer for AI & Analytics

Vorwerk Group in Madrid is looking for a Data Engineer who will focus on implementing data pipelines for analytical use cases. The successful candidate will ensure seamless integration and management of data, navigating challenges within a data lakehouse environment. This role requires expertise in SQL ...

Senior Embedded Verification Engineer, Datacenter Software

Analog Devices is seeking a Senior Software Verification Engineer, Embedded Software, to join the Datacenters & Energy team in Valencia, Spain. You will verify software for cutting-edge embedded systems driving power management in datacenters and contribute to robust test frameworks and regression suites. </p ...

Security Insights Data Engineer: Automation & Snowflake

F. Hoffmann-La Roche AG is seeking a Data Engineer focused on Security Insights and Automation in Madrid. The ideal candidate will design, build, and maintain data pipelines utilizing SQL and Python while optimizing data storage solutions and ensuring quality. This role involves working closely with da ...

GenAI & ML Lead AI Engineer (Hybrid, Madrid/Barcelona)

Una importante empresa del sector asegurador busca un AI Engineer en Barcelona o Madrid para liderar proyectos de analítica avanzada. La persona seleccionada se encargará de diseñar soluciones basadas en datos, gestionar proyectos de inteligencia artificial, y coordinar proveedores tecnológicos. Se busca un prof ...

Senior DevOps & Cloud Automation Engineer

Enverus is seeking a DevOps Engineer to optimize and implement CI/CD pipelines, manage infrastructure with Terraform, and enhance software performance across global teams. The ideal candidate will have 2-3 years of experience in DevOps or technical support, strong knowledge of CI/CD tools, and proficiency in scr ...

Kotlin/JVM Tools Engineer for 3D Rendering Pipelines

Planner 5D is hiring a Java/Kotlin Engineer in Barcelona to develop tools related to AI, rendering, and data processing. You will collaborate within a passionate team to streamline home design and innovate with powerful technologies. The role demands strong skills in Java, Kotlin, and Python, especiall ...

Global Siri ML Tools Engineer — Build Next Gen AI

Apple is seeking a Machine Learning Tools Engineer for their Siri team in Barcelona. The role involves designing and deploying machine learning systems to enhance Siri's capabilities. Candidates should have proven experience in machine learning-based software, proficiency in languages like Python or Swift, and e ...

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    Full Stack Engineer Python React Jobs in Spain Job Search Guide, Trends and Insights