Empleos de founding engineer en Madrid

You'll be our founding engineer, working directly with our technical co-founder and CEO. You'll own large parts of the backend, our agent infrastructure and the data layer, and you'll ship to customersWhat you'll work on Postgres-backed services and APIs that run thousands of agent workflows a dayAutonomous agent systems: multi-step, multi-model pipelines...

Quant Trading / Digital Assets | Fully Remote | B2 B Contract I'm working with an early-stage quantitative trading firm looking for a Senior AWS Infrastructure Engineer to take ownership of its high-performance cloud infrastructure. This isn't a traditional Dev Ops position. They need someone who understands how to build and optimise AWS infrastructure for...

About Share Share is a venture-backed internet infrastructure network building Africa’s backbone. The company aggregates underutilized telecom infrastructure, fiber, subsea cables, and data centers, and provides ISPs with scalable access to bandwidth without traditional upfront costs. Through an open-access model, local internet providers can deliver...

Archteam is seeking a founding engineer to join the CTO and CEO, owning large parts of the backend, our agent infrastructure, and the data layer. You will ship to customers from day one and help define the architecture and product direction.You will work on Postgres-backed services, autonomous agent systems, and data pipelines that feed signals and customer...

Technical leader to build an enterprise AI interviewing platform, focusing on system design, AI, product development, and infrastructure. Offers competitive salary and equity.

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Founding Engineer based in Spain. As a Founding Engineer, you will play a pivotal role in building and scaling an early-stage AI infrastructure product designed to transform how service businesses operate. Working directly with...

We’re looking for a hands‑on technical leader to architect and build a robust, scalable enterprise AI interviewing platform for one of our clients, that balances speed, compliance, and customizability while remaining AI-agent-native from the start. Responsibilities Develop an enterprise AI interviewing platform that absorbs client-specific needs without...

Joppy is seeking a hands-on technical leader to architect an enterprise AI interviewing platform in Barcelona. The role requires 3+ years of experience in technical leadership, focusing on client-specific needs while ensuring speed and compliance. The ideal candidate will have advanced expertise with AI agents and a strong understanding of production...

Spectrum collects data from an organization’s code, docs, and issues, and organizes knowledge in a unified ontology that AI agents can efficiently search through and reason over. We aim to revolutionize the semantic layer space for software-building organizations and move beyond specs that fall out of sync with code, introducing a living spec – one...

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Founding Engineer based in Spain. As a Founding Engineer, you will play a pivotal role in building and scaling an early-stage AI infrastructure product designed to transform how service businesses operate. Working directly with...

Quant Trading / Digital Assets | Fully Remote | B2B Contract I'm working with an early-stage quantitative trading firm looking for a Senior AWS Infrastructure Engineer to take ownership of its high-performance cloud infrastructure. This isn't a traditional DevOps position. They need someone who understands how to build and optimise AWS infrastructure for...

Sobre nosotrosConversations beat CVs. Esa es la convicción detrás de Hirevoice. Nuestra IA entrevistadora da a cada candidato una ocasión real de demostrar su valía y ofrece a los empleadores señales en las que realmente pueden confiar.Estamos construyendo algo más que un entrevistador: una plataforma de IA empresarial.Co‑fundada por Nacho...

Founding Senior Frontend Engineer Ubicación: Madrid (Modelo presencial preferente con alta flexibilidad a negociar) Compensación: 70.000 EUR - 90.000 EUR brutos anuales + Equity fundacional significativo + Beneficios Sobre NAIIAN y el reto NAIIAN es una startup Deep Tech europea, con financiación sólida y equipo fundador en Madrid. Construimos una...

"This is an immediate start role."About UptailUptail builds AI agents for B2C sales in the education sector. Our agents run on WhatsApp and voice, qualifying leads, scheduling calls and engaging prospects in real time, turning raw inbound volume into high-intent pipeline.We're running 100,000+ conversations per month for some of the biggest education groups...

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Forward Deployed Engineer (Founding) based in Spain.Join an innovative, fast-growing technology startup building infrastructure that enables developers to create powerful integrations between applications and AI agents. As a...

Spectrum collects data from an organization's code, docs, and issues, and organizes knowledge in a unified ontology that AI agents can efficiently search through and reason over. We aim to revolutionize the semantic layer space for software-building organizations and move beyond specs that fall out of sync with code, introducing a living spec – one that's...

Solance is building a greenfield, cloud-native Banking Service in Dublin. You will join as a founding Staff Engineer reporting to the CTO and lead the design and development of a full-suite platform, leveraging a modern Java-based stack.You will shape architecture, own critical decisions, mentor engineers, and ensure security, compliance, and scalable...

Desde RightHand, compañía especializada en atracción del talento digital y contratación, estamos colaborando en la búsqueda de un Founding AI Engineer / Head of AI. Nuestro cliente está impulsando una nueva iniciativa centrada en la aplicación de Inteligencia Artificial dentro del ecosistema empresarial. El proyecto nace con una clara vocación de...

Uptail in Spain is seeking an engineer/product-minded role to launch AI agents for B2C education customers. You will work with admissions, marketing and IT to map how enquiries become enrolments and then implement prompts, prompts and evals to improve lead-to-booking on WhatsApp and phone. You'll own deployments from first technical call to a live agent...

"This is an immediate start role." About Uptail Uptail builds AI agents for B2C sales in the education sector. Our agents run on WhatsApp and voice, qualifying leads, scheduling calls and engaging prospects in real time, turning raw inbound volume into high-intent pipeline. We're running 100,000+ conversations per month for some of the biggest...