Staff Product Engineer (Backend focus)

Invopop; Madrid; Presencial; EUR 90.000 - 140.000; Jornada completa

Descripción de la vacante

Invopop (YC W23) is seeking a Staff Product Engineer in Madrid. You'll take ownership of various Apps from research to production. Responsibilities include driving product decisions and supporting customers.

The ideal candidate has over 10 years of experience in backend systems, strong product judgment, and is fluent in English. Compensation ranges from €90k to €140k base, plus stock options, depending on seniority.

You're expected to be in the office 3–4 days a month and travel expenses are covered.

Formación

• 10+ years of experience in building backend systems.
• Ability to scope, prioritize features, and make trade-offs.
• Experience in leading projects end-to-end.

Responsabilidades

• Drive product decisions and define 'good'.
• Investigate regulations and technical docs in new countries.
• Support customers and iterate based on their feedback.

Conocimientos

Backend systems building

Customer empathy

Strong product judgment

Fluent English

Agile project leadership

Herramientas

Golang

NATS

Kubernetes

Descripción del empleo

Your mission as a Staff Product Engineer

With Invopop, users build workflows by chaining Actions, each of which is managed by an App. An App is a standalone service focused on a single goal, such as reporting an invoice to a tax authority, synchronizing it with an external system, or transforming/enriching a document.

As a Staff Product Engineer, you’ll be the owner of several Apps end-to-end, from the initial research to maintaining them in production.

• Investigate new countries and systems: read regulations and technical docs, turn ambiguity into clear requirements, and consult local experts when needed.
• Design and build integrations in Go on top of our modular architecture (NATS, CQRS patterns, Kubernetes on GCP).
• Drive product decisions: define what “good” looks like, choose trade‑offs, cut scope when needed, and ship.
• Support customers using your Apps and iterate based on real feedback.
• Raise the bar across the team: review PRs, mentor engineers, and influence product and technical direction (architecture, patterns, quality).
• 10+ years building backend systems (APIs, distributed systems, or complex domains). Golang is a plus, but not required.
• Fluent English: it's our internal working language.
• Strong product judgment: you can scope, prioritize features, and make trade‑offs under ambiguity.
• Customer empathy: you’re comfortable speaking with customers and translating feedback into product decisions.
• A track record of high‑agency: you’ve led projects end‑to‑end, improved systems over time, and made teams faster through reviews, standards, and mentorship.

Compensation

€90k–€140k base + Stock Options, depending on seniority level.

Where you’ll work

We’re based in Madrid (Calle Guadalquivir, El Viso), 5 minutes from Nuevos Ministerios. You are expected to be in the office 3–4 days per month; travel expenses are covered.

• Real ownership: you research, decide, build, ship, and support your own Apps.
• Work closely with Sam Lown (founding CTO of Cabify) and a small, high‑bar team.
• Hyper‑growth: 15 launches planned in 2026 and a 3× growth goal.
• Full room to experiment: frameworks, databases, schemas, AI tools — nothing is sacred, as long as you can justify the choice.
• No politics: product, taste, and good ideas win.