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Technical Co-Founder

Technical Co-Founder

NuboMadrid, Comunidad de Madrid, España
Hace 24 días
Descripción del trabajo

Overview

Overview . Mission. Help Gen-Z and Millennials budget better and get rewarded. We turn healthy money habits into real-life perks, while protecting privacy and making finance feel human.

Vision. Build Europe’s most trusted financial-wellbeing platform—an AI coach that predicts, nudges, and celebrates good choices, and a rewards network that drives customers to small local businesses. We grow B2C and through partner programs with universities and employers (B2B2C).

We’re a young, Gen-Z–founded team and we love working with Gen Z co-founders and builders of any age who bring owner energy. We prioritize talent, dedication, passion, skills, and product vision above everything else. We highly value experience, but we’ll always choose attitude + craft + impact over tenure. If you’re a doer who wants real ownership, you’ll feel at home here.

How we work (culture).

  • Flat, title-light, owner teams. Decisions live close to the work; impact beats hierarchy.
  • Healthy pace. Remote-first hybrid with a Madrid hub; flexible hours and protected focus—no heroics culture.
  • Inclusive by design. Cycle-aware flexibility for women (bank weekend days and convert to a rest week), supportive policies for caregiving and health, and pay-equity reviews.
  • Craft + kindness. High bar, no brilliant-jerk policy. We give candid feedback, write things down, and default to shipping small and often.
  • Security & privacy first. GDPR / PSD2 mindset from the start.

What we expect.

  • Ownership from day one; you turn ambiguity into shipped products.
  • Clear communication (Spanish & English), especially with non-technical partners and investors.
  • Curiosity about users and data; measure outcomes and iterate.
  • Respect for constraints—use them to build elegant, scalable systems.
  • Care for the team : reliable, collaborative, and generous with knowledge.
  • Why work here.

  • Real impact : Your work changes how people manage money and helps neighborhood businesses win.
  • Founder-level influence : Shape the stack, roadmap, and culture.
  • Accelerated growth : Early responsibility, fast feedback loops, and visible wins.
  • Upside : Meaningful equity with room to grow compensation as the company scales.
  • Learning environment : Mentorship, guilds, demo days, and time set aside for exploration.
  • Good humans : We’re ambitious and kind—serious about the mission, never about ego.
  • If you want ownership, purpose, and the chance to build something that matters, you’ll feel at home at Nubo.

    Own the architecture & roadmap : From MVP to early scale; set standards for reliability, security, and velocity.

    Overlook core product

  • Categorization engine (MCC / ML), spend forecasting, budgeting logic.
  • Rewards marketplace & partner integrations.
  • Interact with software vendors on a daily basis.
  • AI / ML layer : Maintain pragmatic models (e.g., sklearn / Prophet, embeddings, rules + LLMs) and 3rd-party AI integrations (OpenAI, etc.) for tips, classification, and personalization—privacy-first.
  • Security & compliance : Privacy-by-design, GDPR / PSD2 alignment, data minimization, tokenized bank access.
  • Investor-facing : Present the stack, roadmap, and moat; handle technical diligence; translate complex tradeoffs clearly.
  • Team : Hire and mentor an A-team (FE / BE / ML), shape culture, and run lightweight processes (sprints, crits, reviews).
  • Our stack :

  • Backend : Node.js / TypeScript or Python services; Firebase / GCP to start; Postgres / Firestore; REST / GraphQL
  • AI / ML : Python (pandas, scikit-learn, Prophet / ARIMA), optional PyTorch; prompt / LLM tooling; feature stores later
  • Data / Infra : GCP (Cloud Run / Functions), Docker, CI / CD (GitHub Actions), Sentry / Crashlytics, Mixpanel / Amplitude
  • What success looks like (6-12 months) :

  • Live product with stable bank sync, categorization >
  • 90% accuracy on top categories, and proactive alerts
  • AI tips engine shipping weekly improvements from real usage data.
  • Clear data model, logs / metrics / dashboards, and on-call basics in place.
  • Technical story that resonates with investors : moat, scalability, risk controls, and path to unit economics.
  • You'll thrive if you have :

  • 2–5 years building production software at a startup or high-ownership team.
  • Shipped features across the stack (frontend + backend + data).
  • Hands-on AI / ML exposure (classification, forecasting) and comfort integrating external AI APIs.
  • Experience with cloud (GCP / AWS), APIs, auth / OIDC, and secure data handling.
  • Strong product instincts and UX empathy; bias to ship, measure, iterate.
  • Outstanding communication & presence in investor meetings—able to explain architecture, tradeoffs, risks, and roadmap clearly.
  • Bilingual Spanish & English. (English is mandatory, bilingual is preferred)
  • It is okay to not have all of these skills, we most value passion, dedication, and a learning mindset which will take priority above all.

    Nice to have :

  • Fintech background (banking APIs, payments, PSD2, PCI / ISO / GDPR familiarity).
  • Mobile experience (React Native), event-driven systems, or MLOps basics.
  • Prior founder or early-stage experience; hiring / mentoring engineers.
  • What we offer :

  • Founder-level equity (up to 25%) with standard vesting; real ownership of the tech and product.
  • Salary : negotiable; initially modest while pre-seed, with meaningful upside post-funding.
  • Remote-first hybrid with flexible hours; healthy pace (we protect sleep & focus).
  • Inclusive policies (cycle-aware flexibility), rapid growth path, and a mission with direct social impact —helping users and supporting small local businesses via our rewards network.
  • Onboarding Process : 30-min deep-dive (architecture & product problem) Investor-style tech narrative; 30-min in person founder chat (fit, mission, expectations); References & offer.
  • Note : We strongly encourage women as well to apply for this role.

    Seniorities

  • Executive
  • Employment type

  • Full-time
  • Job function

  • Business Development and Sales
  • End of refined description.

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    Technical • Madrid, Comunidad de Madrid, España

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