Empleos de engineer - back end developer en Madrid

A technology recruitment agency is seeking a Mid-Senior Back End Developer specializing in Python, machine learning, and data science in Zaragoza, Spain. This full-time role involves working with Fortune-500 clients and leading technical efforts in AI and quantum technologies. Candidates should have a strong educational background and experience in software...

At Equitable Earth, we're on a mission to help protect and restore 1% of the natural world by 2030. We’ve built a rigorous, technology-enabled standard to certify conservation and restoration projects, ensuring they deliver lasting impact: strengthening livelihoods, safeguarding biodiversity, and supporting a stable climate. We're a diverse, mission-driven...

OmniAccess in Palma de Mallorca is seeking a Backend/AI Engineer with 3+ years of experience to design and build cloud-native back-end systems. You will integrate AI capabilities, including LLM-powered features, into the product portfolio and work across the development team.Responsibilities include building robust micro-services, APIs, and data models; ...

We're looking for a Staff/Senior Software Engineer to technically lead and build Runware's serverless platform. You'll be part of a small team working closely with senior leadership to bring a new product line to market.Runware is evolving beyond model APIs into a platform where developers can deploy models and run AI workloads without managing GPUs, servers...

ARQUIMEA, we are a technology company operating globally, offering innovative solutions and products in highly demanding sectors. Our main areas of activity are Aerospace, Defense & Security, Big Science, and Fintech. We are looking for a FPGA Design Engineer with solid experience in the design and verification of digital circuits for FPGAs, ASICs and SoC...

Magellan Partners is seeking a Web Development & DevOps Engineer to bridge development, infrastructure, and cloud teams. You will design, build, deploy, and maintain robust, secure web applications while industrializing delivery and operations processes, leveraging AI assistants to boost productivity and code quality.You will own front-end and back-end...

Location: Madrid, Spain (Remote — with regular in-person collaboration at a local WeWork alongside our Madrid tech team) About MediaRadar MediaRadar, now including the data and capabilities of Vivvix, powers the mission-critical marketing and sales decisions that drive competitive advantage. Our competitive advertising intelligence platform enables clients...

The next great GTM company is being built in Barcelona. Enginy is a Barcelona-based startup and one of Southern Europe's fastest-growing companies ranked #3 in the Sifted 100: Southern Europe 2026, and we're just getting started. We're building the AI-native GTM platform for modern B2B teams, combining prospecting, enrichment, intent signals, AI research and...

ABOUT THE ROLE AND OUR TEAM: The Knot Worldwide is seeking a Junior back-end engineer to join The Knot Enterprise team. The Knot is the nation’s leading wedding marketplace, providing our couples with a personalized experience that guides them through the entire wedding planning journey. The Enterprise team develops the tools for the business to make our...

¡Capitole sigue creciendo - y queremos que formes parte del viaje!Estamos buscando un/a Senior Back End Engineer con +5 años de experiencia para unirse a nuestro increíble equipo.Funciones:Senior Backend Engineer (Node.Js / Azure / APIs / Integración de Sistemas)Formar parte del equipo de ingeniería responsable del diseño, desarrollo y evolución del...

Elastic, the Search AI Company, empowers everyone to find answers in real-time, leveraging all their data at scale, and fueling the potential of businesses and individualsThe Elastic Search AI Platform, trusted by over 50% of the Fortune 500, unifies the precision of search with the intelligence of AI to accelerate impactful resultsThe Software Engineer will...

Lever, Inc. is seeking an experienced Angular Developer in Spain to build, enhance, and maintain scalable web applications and CMS-based platforms. This fully remote contract role focuses on modern front-end architectures, REST/GraphQL integrations, and progressive modernization of legacy apps using AngularJS retirement paths. You will collaborate with...

We’re on the lookout for a talented Software Engineer (Go)50–80K EUR | Full Remote (Spain) | Work with AI dev tools | Series A startup backed by top US VCs.Thanks for your interest in Agentero! While we’re not actively hiring for Backend Engineers right now, we’re keeping an open talent pool for exceptional candidates. If your profile is a strong...

European Union, LATAMWork type:Office/RemoteTechnical Level:LeaderJob Category:Software DevelopmentProject:Leading platform for electronic agreementsWe are looking for a talented Senior Full-Stack Engineer to join a team building a modern, large-scale platform that powers intelligent agreement management experiences for millions of users worldwide. Our...

The next great GTM company is being built in BarcelonaEnginy is a Barcelona-based startup and one of Southern Europe's fastest-growing companies ranked #3 in the Sifted 100: Southern Europe 2026, and we're just getting started.We're building the AI-native GTM platform for modern B2B teams, combining prospecting, enrichment, intent signals, AI research and...

Forward Deployed Engineer Location: Madrid, Spain Team: Client Services Welcome to Maisa – Making AI Accountable! Maisa is building the next generation of Agentic Process Automation, helping enterprises automate complex, decision-heavy processes that traditional automation can’t handle and GenAI alone can’t be trusted with. Our platform combines...

Acid Tango is a digital product studio.We transform our clients' ideas into digital products, with a focus on digital innovation and bringing disruptive ideas to life.In every project, we search for the perfect harmony between simplicity, aesthetics, and technology.We're currently looking for a Lead software developer with solid Java expertise to join...

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 leadership skills, and proficiency in languages such as Go,...

DescriptionDo you think like an engineer first, and a language specialist second?We are looking for engineers who want to build t he next generation of cloud-native financial technology.Our platforms run on .NET and Java, but we are not looking for C# or Java developers (or Python developers, or developers of any other language). We are looking for software...

Location: Madrid, Spain (Remote — with regular in-person collaboration at a local WeWork alongside our Madrid tech team) About MediaRadar MediaRadar, now including the data and capabilities of Vivvix, powers the mission-critical marketing and sales decisions that drive competitive advantage. Our competitive advertising intelligence platform enables clients...