founding ai engineer

Factorial is launching a brand-new spinoff inside Factorial, recruiting a Founding Engineer to shape the early product and team in Barcelona. You’ll own core initiatives, move fast, and balance shipping AI features with robust reliability and user focus. You’ll work in a small, scrappy team with day-one runway, collaborating across backend in Ruby on...

Factorial HR is launching a brand-new spin-off in Barcelona and seeks a Founding Engineer to own major initiatives from day zero. You’ll ship AI-powered features with Ruby on Rails on the backend and React/TypeScript on the frontend, prioritizing practical impact over perfect theory, and you’ll help shape the product from the ground up. Joining a...

Factorial is seeking a Founding Engineer for a new spin-off inside Factorial, starting from scratch with 0 to 100M by 2030. You’ll own major initiatives, work in a fast-moving team, and contribute to agentic workflows, LLM features, and scalable AI systems. You’ll join a Barcelona-based team with flexible on-site/remote options, helping shape the product...

Juryo is looking for an AI-native coder who can own entire parts of the product from database to UI. You will ship daily, shape architecture, and directly influence the product used by law firms. Expect to build scalable pipelines and verticals that power a growing platform in a fully on-site role in Barcelona or relocation-friendly. You will join a...

Factorial HR is launching a brand-new spin-off in Barcelona and seeks a Founding Engineer to own major initiatives from day zero. You’ll ship AI-powered features with Ruby on Rails on the backend and React/TypeScript on the frontend, prioritizing practical impact over perfect theory, and you’ll help shape the product from the ground up.Joining a scrappy,...

Juryo is looking for an AI-native coder who can own entire parts of the product from database to UI. You will ship daily, shape architecture, and directly influence the product used by law firms. Expect to build scalable pipelines and verticals that power a growing platform in a fully on-site role in Barcelona or relocation-friendly. You will join a...

Juryo is looking for an AI-native coder who can own entire parts of the product from database to UI. You will ship daily, shape architecture, and directly influence the product used by law firms. Expect to build scalable pipelines and verticals that power a growing platform in a fully on-site role in Barcelona or relocation-friendly. You will join a...

Juryo is looking for an AI-native coder who can own entire parts of the product from database to UI. You will ship daily, shape architecture, and directly influence the product used by law firms. Expect to build scalable pipelines and verticals that power a growing platform in a fully on-site role in Barcelona or relocation-friendly. You will join a...

Juryo is looking for an AI-native coder who can own entire parts of the product from database to UI. You will ship daily, shape architecture, and directly influence the product used by law firms.Expect to build scalable pipelines and verticals that power a growing platform in a fully on-site role in Barcelona or relocation-friendly. You will join a founding...

Factorial is launching a brand-new spinoff inside Factorial, recruiting a Founding Engineer to shape the early product and team in Barcelona. You’ll own core initiatives, move fast, and balance shipping AI features with robust reliability and user focus. You’ll work in a small, scrappy team with day-one runway, collaborating across backend in Ruby on...

Jobtailor in Madrid seeks a French-speaking Full‑stack AI Engineer to collaborate with customers from onboarding to deployment. You will build features using React, TypeScript, Node.js, and Python, and design AI/ML solutions including LLM prompting and tuning to support valued customer outcomes. You will manage APIs and third‑party integrations while...

A FinTech start-up is seeking an AI Engineer to join their new Madrid office, offering a salary up to €130,000. The successful candidate will work on implementing AI and LLM functionality within their proprietary trading systems. Candidates must have a top-tier educational background in Computer Science or Mathematics, strong Python skills, and experience...

Factorial HR is launching a brand-new spin-off in Barcelona and seeks a Founding Engineer to own major initiatives from day zero. You’ll ship AI-powered features with Ruby on Rails on the backend and React/TypeScript on the frontend, prioritizing practical impact over perfect theory, and you’ll help shape the product from the ground up.Joining a scrappy,...

Jobtailor in Madrid seeks a French-speaking Full‑stack AI Engineer to collaborate with customers from onboarding to deployment. You will build features using React, TypeScript, Node.js, and Python, and design AI/ML solutions including LLM prompting and tuning to support valued customer outcomes.You will manage APIs and third‑party integrations while...

Factorial HR is launching a brand-new spin-off in Barcelona and seeks a Founding Engineer to own major initiatives from day zero. You’ll ship AI-powered features with Ruby on Rails on the backend and React/TypeScript on the frontend, prioritizing practical impact over perfect theory, and you’ll help shape the product from the ground up.Joining a scrappy,...

FledgeWe are a boutique Talent search firm connecting exceptional Talent with the most innovative companies in the AI and software development industries across EMEA. Our clients are among companies with innovative products that have a positive impact on our societies and we present them with a solution model between fine consulting and flexible recruitment...

Merista builds the physical AI workforce for food production. This founding team robotics hire, reporting to the CTO, owns the robot’s mind, and everything between intent and motion. Full-time and on-site in Barcelona. You’ll lead technical choices across manipulation, learning, and control, collaborating with perception and mechatronics engineers to...

SLNG is seeking a Speech Model Performance Engineer to shape the technical foundation for real-time speech AI. You will benchmark, optimise, and productionize speech inference from TTS to multilingual ASR, working closely with the founding team to deliver scalable, low-latency models. You will contribute to performance engineering, benchmarking across...

Factorial is seeking a Founding Engineer for a new spin-off inside Factorial, starting from scratch with 0 to 100M by 2030. You’ll own major initiatives, work in a fast-moving team, and contribute to agentic workflows, LLM features, and scalable AI systems. You’ll join a Barcelona-based team with flexible on-site/remote options, helping shape the...

Merista builds the physical AI workforce for food production. This founding team robotics hire, reporting to the CTO, owns the robot’s mind, and everything between intent and motion. Full-time and on-site in Barcelona.You’ll lead technical choices across manipulation, learning, and control, collaborating with perception and mechatronics engineers to...