Senior Full Stack Software Engineer (Python, React), Remote, Madrid/Barcelona
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Descubra si esta ocasión es adecuada para usted leyendo toda la información que sigue a continuación.
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Help build high-performance web applications used by thousands of users.
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We’re looking for a
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Senior Full Stack Software Engineer with a strong backend focus in Python and solid
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React experience to help design and scale modern web applications. This role is ideal for someone who enjoys solving complex engineering challenges, making architectural decisions, and building systems designed for reliability and performance at scale.
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You’ll work closely with engineers and stakeholders to deliver robust, user-friendly applications while contributing to both backend architecture and modern frontend improvements.
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About the Role
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As a
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Senior Full Stack Engineer
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, you will play a key role in shaping the technical direction of the platform. You’ll lead backend architecture decisions, build scalable services, and help evolve the frontend experience using modern technologies.
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The platform supports thousands of concurrent users and high-frequency external integrations
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, so performance, stability, and scalability are critical.
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You’ll also help drive engineering best practices, improve testing coverage, and contribute to continuous technical improvements across the stack.
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What You’ll Be Doing
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Leading the design and development of backend services using Python
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Building scalable APIs and services capable of supporting high traffic and concurrent users
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Contributing to modern frontend development using React and TypeScript
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Making key architectural and technical decisions
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Improving system performance, reliability, and scalability
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Writing well-tested backend and frontend code
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Implementing end-to-end and integration testing using Playwright
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Collaborating with engineers and stakeholders to deliver high-quality solutions
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Supporting ongoing technology improvements and engineering best practices
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What We’re Looking For
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Solid professional background developing backend services with Python
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Proven track record building scalable web platforms and API-driven applications
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Experience designing systems that prioritise stability, efficiency, and high performance
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Strong understanding of modern backend design patterns and scalable architectures
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Hands-on experience implementing automated testing and maintaining reliable codebases
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Confidence in contributing to architectural discussions and influencing technical direction
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Experience with technologies such as:
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Python, FastAPI, ReactJS, TypeScript, Tailwind, Vite
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Experience with infrastructure or DevOps practices is a plus
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, but not mandatory as deployments and operations are handled by a dedicated infrastructure team.
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Location
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Remote, candidates must be based in
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Madrid or Barcelona
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Contract type
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6-month B2B contract, with possibility to extend
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Our goal is to strengthen the brand in Spain. We are looking for an expert to work as
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Full-stack developer!
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What do you need to fulfill this job?
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Full capability to work efficiently in English
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Driven and eager to resolve and to find a way (to learn, develop, get things done)
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Basic techs used: React, Type Script, Java, Golang, Node, MariaDB, Elastic Search, Docker, Kubernetes, AWS/GCP, Github Actions
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Practical AI usage experience as part of development e.g. Github Copilot
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Quality driven development attitude and knowledge to write unit tests, follow secure development practices, ensure solution performance, etc.
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About HCLTech
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We are HCLTech, one of the fastest-growing large tech companies in the world and home to 225,000+ people across 60 countries, supercharging progress through industry‑leading capabilities centered around Digital, Engineering and Cloud. The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis.
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We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version of themselves that they can be.
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If all this sounds like an environment you’ll thrive in, then you’re in the right place. Join us on our journey in advancing the technological world through innovation and creativity.
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Why Us?
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We offer End-to-end digital transformation expertise that helps clients from strategy through execution. We work with the biggest brands, offering the opportunity to be a part of industry-leading work.
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We are invested in your growth, offering learning and career development opportunities at every level to help you find your spark.
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We offer freedom and flexi