700,767+ Full Stack Engineer Python React Jobs in Spain — Top Companies Hiring September 2026

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Data Engineer: Pipelines, Data Vault y Cloud

NTT DATA, Inc. busca un Data Engineer para diseñar, desarrollar y documentar componentes técnicos para las waves de Policy360 en las capas de ingesta, Data Vault y consumo. Se valora experiencia en SQL, Python y plataformas cloud como Azure. El candidato trabajará en proyectos que transforman datos en ...

Remote Agentic AI Engineer for Procurement Platform

Mercanis is seeking an experienced Agentic AI Engineer to design, build and optimize agentic AI systems that automate procurement workflows and power intelligent decision making across our platform. You will work with Python, LangGraph, and AWS, integrating providers like OpenAI, Anthropic, and AWS Bedrock to ...

Aeroelasticity & Structural Dynamics Engineer

Airbus Defence and Space in Getafe (Madrid) seeks a Structural Dynamics and Aeroelasticity Engineer to join our aerospace team. You will perform aeroelastic and structural dynamics analyses for aircraft and spacecraft components, develop and validate numerical models, and use Nastran/Patran, Matlab/Simulink f ...

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 ...

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 ...

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, ...

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 ...

Fully Remote Site Reliability Engineer – Blockchain Infra

P2P.org is the largest institutional staking provider with a global, fully remote team. We offer a fully remote, indefinite-term consultancy role with USD salary and a strong focus on infrastructure performance and security. We seek an engineer to own automation using Ansible, Python or Go, and to keep ...

AI Driven Code Quality & Security Validation Engineer

T-Systems Iberia in Valencia is seeking an experienced engineer to enhance software security and DevSecOps across large codebases. You will leverage AI-assisted tools to review code, assess vulnerabilities, and cluster software supply-chain risks while collaborating with security, DevOps, architecture and tes ...

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 ...

Senior Software Engineer: Agentic AI & Scalable Backend

Refinery89 is seeking a Senior Software Engineer with an agentic mindset to build scalable backend services and orchestrate agentic workflows. You will own features end-to-end, from design to deployment, and work on a production AdTech platform with direct business impact. This fully remote role requir ...

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 ...

Lead AI Engineer — End to End ML in Production | Remote

Nalanda is hiring a senior ML/AI engineer to own AI initiatives end-to-end, from opportunity spotting to production-ready models. You’ll set technical direction, partner with Product and Engineering, and decide when a feature is ready to ship or needs more work. We expect 5+ years of hands-on ML/AI exp ...

Back End Software Engineer Web & Mac Apps

Passion Squared is seeking a Software Engineer – Back End in Madrid to join a web agency team. You will contribute to developing new web and mac applications, maintain existing systems, and translate internal requirements into effective software solutions. The role requires proficiency in Python, Java ...

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 ...

Edge AI Engineer for Satellites & In Orbit ML

Aistech Space, based in Sant Cugat del Vallès, Barcelona, seeks an Edge AI Engineer to bridge Data Science, Software and Hardware. You will deploy and optimize ML models for satellites, ground processing, and cloud platforms, ensuring real-time, low-latency performance on constrained hardware. You will ...

GenAI ML Engineer LLMs, AI Agents, MLOps | Madrid

UST, a multinational technology company, seeks a Machine Learning Engineer in Madrid to design, build, and deploy enterprise AI solutions leveraging Generative AI, LLMs, and MLOps. You will work with cross-functional teams to productionize AI models and improve agentic workflows. The role requires visi ...

Senior Data Scientist & ML Engineer: Modelos en Producción

Capitole busca un/a Senior Data Scientist / Machine Learning Engineer para unirse a un equipo internacional de datos. Participará en el ciclo completo de vida de modelos, desde el análisis de datos y la experimentación hasta el despliegue y monitorización en producción, colaborando estrechamente con perfiles ...

Senior Vehicle Dynamics CAE Engineer – Hybrid Role

Applus+ IDIADA is seeking an experienced Vehicle Dynamics Engineer to drive advanced simulations for chassis and vehicle development. You will build chassis models, run virtual evaluations, and optimize parameters to meet performance targets while delivering clear reports and customer presentations. Th ...

Site Reliability Engineer — Scale AI Infra on AWS

Restb, Barcelona-based, is seeking a Site Reliability Engineer to design, implement, and maintain scalable production systems on AWS with a focus on reliability, performance, observability and cost-efficiency. Join a dynamic, hybrid team that values automation and growth. The role offers global impact, ...

Senior Data Engineer Real Time Data Pipelines & Snowflake

Benjamin is seeking a Senior Data Engineer to advance our data platform powering MoMos rewards and everyday actions. You will build end-to-end data pipelines, integrate systems, and enable real-time analytics across product, payment, advertising, and partners. You will own Snowflake pipelines, apply db ...

Analytics Engineer: Data & AI Platform Specialist

Allianz Spain busca un Analytics Engineer de Operations Steering para diseñar y mantener activos de datos que soporten reporting, analítica avanzada e IA. Trabajarás en modelado de datos orientado a reporting y en la elaboración de soluciones con Power BI, SQL, Python y PySpark para asegurar calidad, rendimie ...

AI Data Engineer — Cloud Scale Data Pipelines

Schneider Electric is seeking a hands-on Data Engineer with strong AI experience to design, develop, deploy and support scalable, cloud-native data solutions. You will collaborate with product, architecture, DevOps, and analytics teams to deliver reliable data platforms and post-production support in an Agile ...

LLM Engineer | Quantum AI & Model Optimization (Hybrid)

A dynamic technology company is seeking a Junior/Mid-level Machine Learning Engineer to join their team in Zaragoza. The role involves designing techniques to improve Large Language Models using innovative quantum technologies. Candidates should have at least 2 years of experience in deep learning, excellent Pyt ...

Data Engineer: Build Real Time Data Pipelines & ML

Schwarz Digits seeks a Data Engineer to craft scalable data solutions in Barcelona, Spain. You will build and optimize batch and real‑time pipelines, develop ML‑driven features, and work closely with stakeholders to translate business needs into robust data architectures. Required skills include Python ...

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 Security Engineer WordPress & PHP Automation

A global cybersecurity company is seeking a Senior Security Engineer to automate exploit generation and analyze zero-day attacks on WordPress. This role requires a strong background in security engineering and hands-on experience with exploiting PHP applications and WordPress plugins. Candidates should possess s ...

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 Cloud SIEM Engineer — AI Driven Threat Detection

Datadog is seeking a Senior Security Engineer to focus on their Cloud SIEM product, helping to advance detection capabilities and improve security workflows. This role involves researching threats, designing investigation processes, and developing detection content for various platforms. The ideal cand ...

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 ...

Senior ML Engineer Gaming Personalization, Hybrid/Remote

Tripledot Studios Limited is seeking an ML Engineer to join our AI group in Barcelona. You will design and implement personalization models for our mobile games, collaborating with data engineers, researchers, and product teams to improve retention and revenue. You’ll prototype production-ready code, r ...

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 ...

Senior ML Engineer for Travel Growth (Hybrid, Equity)

BizAway S.r.l. in Barcelona is hiring a Senior Machine Learning Engineer to join their Data & Analytics Team. You will design ML-powered data products, collaborate with cross-functional teams, and own the lifecycle of ML models. The ideal candidate has 5-8 years of experience, strong Python skills, and a Master' ...

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 ...

Pipeline Engineer: Animation Production Tools & Workflows

A leading animation studio in Madrid is seeking a Pipeline Engineer to develop and maintain software for global feature animation. The role involves collaborating with various teams to resolve issues and improve production workflows. Candidates should have a BS degree in Computer Science and 3+ years of experien ...

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 ...

Data Engineer: Scalable Pipelines & Lakehouse

UST, a multinational company in Madrid, is seeking a Data Engineer to contribute to impactful projects for global clients. You will collaborate with cross-functional teams to design and implement scalable data pipelines while ensuring data quality and security. The ideal candidate will have expertise i ...

Senior DevOps Engineer – Cloud, Kubernetes & SRE

Qustodio, part of the Qoria family, is seeking a DevOps Engineer to scale and secure our production infrastructure. You will contribute to faster, safer deployment cycles and work closely with engineering teams to deliver reliable platforms across AWS and Kubernetes. Requirements include 5+ years’ expe ...

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 ...

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