Backend Product Engineer — Own Core Apps in Madrid + Stock

A global e-invoicing platform is looking for a Backend Product Engineer in Madrid. You will own integrations from research to launch, design and build solutions in Go, and engage with customers to influence product decisions. Ideal candidates should have 1–10 years of backend experience, particularly in Golang, and be fluent in English. This role offers €50k–€90k salary plus stock options depending on experience. The office requires at least 3 days a week on site, promoting a collaborative environment.
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