Empleos de founding senior software engineer en Madrid

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Founding Senior Software Engineer based in Spain.Join a fast-growing technology startup building an AI-powered platform that transforms how organizations discover, understand, and act on information from across the digital...

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Founding Senior Software Engineer based in Spain. Join a fast-growing technology startup building an AI-powered platform that transforms how organizations discover, understand, and act on information from across the digital...

Syntrace is hiring a Software Engineer based in Barcelona. You will build across the stack in a small senior team where you own features end to end. Our core is event-sourced and real-time by design, and you will help shape how it grows. We are a founding team with real ownership and a modern stack, built properly from day one. You will work with a senior...

Ebury is building a new engineering hub in Valencia, and you would be one of its founding product engineers shaping how this team builds money software at pace.As a Senior Software Engineer, you will own client-facing platforms, drive architectural decisions, and weave AI-native tooling into the product while ensuring reliability and regulatory...

Jobgether SRL is seeking a Founding Senior Software Engineer based in Spain to build and scale an AI-powered platform. You will own architecture decisions, shape product direction, and drive end-to-end development in a lean, autonomous team.You will integrate AI capabilities, work on high-performance APIs, and influence infrastructure choices to support...

Jobgether SRL is seeking a Founding Senior Software Engineer based in Spain to build and scale an AI-powered platform. You will own architecture decisions, shape product direction, and drive end-to-end development in a lean, autonomous team. You will integrate AI capabilities, work on high-performance APIs, and influence infrastructure choices to support...

Estamos incorporando varias personas al equipo inicial de ingeniería. Buscamos perfiles con distintos recorridos que compartan una base técnica sólida, criterio de producto y ganas de asumir ownership real.El trabajo tiene un núcleo común. Durante el proceso ajustaremos el alcance inicial, la autonomía, la participación en arquitectura y estándares,...

Help change one of the largest global industries: insurance brokerage.About Us Afori's vision is to ensure every human has the right cover at the right time. Our founders previously built insurance unicorn wefox and are now building the AI layer for insurance brokers: agents that plug directly into brokers' daily workflows and take over the back-office work...

Se busca Ingeniero Backend Senior Fundador para construir la plataforma core de una startup Deep Tech, encargándose de APIs, autenticación, autorización, multi-tenancy, integración con datos e IA, y observabilidad.

Buscamos un Ingeniero Senior de IA para construir sistemas de IA aplicados, agentes sobre AWS Bedrock, RAG y human-in-the-loop. El rol requiere experiencia en LLMs, Python/Django y AWS, ofreciendo equity fundacional y un entorno de alta exigencia operativa.

Se busca Ingeniero Senior de Cloud/Infraestructura para construir la base cloud y operacional de una startup Deep Tech desde cero, gestionando CI/CD, observabilidad, escalabilidad, seguridad y automatización para una plataforma con IA aplicada.

We are looking for aSenior Embedded Linux Software Developerwith strong experience in embedded Linux environments to join our team.The role involves developing Linux-based software to be deployed across multiple hardware boards, working closely with different build systems and BSPs.Key ResponsibilitiesDevelop and maintain embedded Linux software for various...

From internal tools to company-wide workflows, Noloco turns your data into a custom, AI-powered app your team will love to use. We empower teams running complex operations to create custom portals, such as internal tools, client portals, and CRMs. Changing the way small and medium-sized businesses grow and work together.Backed by Y Combinator, Frontline and...

Do you want to work in a highly dynamic environment and build reliable, scalable backend systems? Are you passionate about Java, distributed systems, and event-driven architectures? Then our Backend Engineering Team wants to hear from you. We are an agile and collaborative team responsible for designing and operating core backend services that power our...

Scopely is seeking a highly motivated Senior/Software Engineer to join our Playgami team in Barcelona on a hybrid basis! At Scopely, we care deeply about what we do and want to encourage play every day - whether in our work environments alongside our talented colleagues or through our deep connections with our communities of players. We are a global team of...

OverviewAt Sunweb Group, we’re building and evolving the core systems behind millions of holidays each year. As a Senior Software Engineer, you contribute directly to how our platform is designed, scaled, and improved.LocationRotterdam / Girona Sunweb Group office (Hybrid)Start dateAugust 2026AvailabilityFulltimeWhat You’ll DoDesign and build scalable,...

About usWe build the measurement layer for agricultural sustainability: carbon footprints for the livestock industry using our own certified models, biodiversity assessment from remote sensing, and emissions reduction planning. Our customers are agri-food processors and cooperatives measuring and reducing the environmental impact of thousands of farms. We're...

The Apex Group was established in Bermuda in 2003 and is now one of the world's largest fund administration and middle office solutions providers.Our business is unique in its ability to reach globally, service locally and provide cross-jurisdictional services. With our clients at the heart of everything we do, our hard-working team has successfully...

Senior Software EngineerAbout UsAt Auctane, we are united by a passion to help businesses deliver — whatever the size, wherever they are, and however they operate. We make it possible for businesses to meet the ever-changing requirements of their industry and customer expectations. Auctane products enable hundreds of thousands of businesses to annually...

Senior C++ Software Engineer – Hardware-Connected Systems Barcelona, Spain | Hybrid – typically 2 days onsite per weekWe’re looking for an experienced, hands‑on C++ engineer who enjoys developing Windows software, working close to real hardware and solving challenging integration and performance problems.You’ll join the Barcelona R&D team of a...