Invopop

TL;DR We’re a global e-invoicing platform operating in 25+ countries. Revenue grew 10x last year, and we plan to 3x in 2026. Role: own integrations end-to-end — research, define, build, ship, and iterate with customers. Looking for: 1–10 years of backend experience, builder mentality, fluent English, comfort with ambiguity, and complex domains. Compensation: €50k–€90k base + Stock Options. Location: Madrid (at least 3 days/week in our beautiful office in El Viso, Madrid). ⸻ Hi there 👋🏼, I’m Juan, the CEO of Invopop. We help companies like Fever, DeepL, Booksy, and SumUp issue and receive invoices that comply with local requirements across 25+ countries. We're looking for a Backend Product Engineer to join our team in Madrid. If you enjoy solving challenging problems with elegant software solutions, owning your roadmap, and directly interacting with customers, this role could be a great fit! About Invopop Invopop helps global companies like SumUp, Fever, and DeepL issue and receive invoices across more than 25 countries through a single API. In the next five years, more than 40 countries, including the entire EU, will mandate that businesses send invoices electronically in XML format and report them in real time to tax authorities. This reduces fraud and enables companies to automate invoice processing instead of relying on OCR. There’s only one catch: each country has defined unique standards, forcing global companies to build dozens of local integrations—or integrate once with Invopop. :) Invopop was founded by Sam Lown, co-founder and former CTO of Cabify, and Juan Moliner (ex-BCG), based on Sam’s experience dealing with this problem at Cabify We’ve raised €2.8M from top-tier venture capital firms, including YCombinator (W23), and have been named the Best Startup at South Summit 2024 and Madrid's Hottest Startup of 2024 by Wired. Your mission as a Backend Product Engineer With Invopop, users build workflows by chaining Actions, each action being 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 (e.g., ERP), or transforming/enriching a document. As a Staff Backend Product Engineer, you’ll be the owner of several Apps end-to-end, from the initial research to launching, and 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). Make product decisions: what and how to build it, what to cut, and when to ship. Support customers using your Apps and iterate based on real feedback. Contribute to GOBL, our open-source standard for commercial documents. Who we’re looking for Backend engineering experience, ideally with Golang. Strong communication skills in English. Empathy for customers—you're eager to engage with clients and influence product decisions. Comfortable defining the scope as you build, learning new technologies, and navigating unfamiliar domains. Experience starting projects from scratch—perhaps as a founder, open-source contributor, or through impactful side projects. Compensation €50k–€90k base + Stock Options, depending on seniority level. If you have 10+ years of experience and are looking for a higher-leverage role (broader scope, leading multiple tracks), we’re also hiring for a Senior Product Backend Product Engineer (€90k–€140k base + ESOP). Where you’ll work We’re in Madrid (Calle Guadalquivir, El Viso), 5 minutes from Nuevos Ministerios. No fixed schedule. We expect at least 3 days/week in the office — high-context work moves faster in person. Sam and I are often in the office, and part of our role is to be close to decisions and context. Why join Invopop Real ownership: you research, decide, build, ship, and support y

TL;DR We're a global e-invoicing platform operating in 25+ countries Revenue grew 10x last year, and we plan to 3x in 2026. Role: own integrations end-to-end, research, define, build, ship, iterate with customers. No PMs or bureaucracy in between. Looking for: new grads engineers with strong software development fundamentals, fluent English (no Spanish required), a builder mentality, and comfort with ambiguity. Compensation: €45k base + Employee Stock Options (ESOP) Location: Madrid (4-5 days/week in office). ⸻ Hi there 👋🏼, I’m Juan, CEO of Invopop. We help companies like Fever, DeepL, and Booksy issue and receive invoices that comply with local requirements across 25+ countries. We hire only exceptional early-career talent. If you’re looking for the fastest way to become a great engineer, or eventually start your own company, it’s hard to beat working directly with Sam Lown (founding CTO of Cabify) and Juan Moliner (ex-BCG) and a small, high-bar team where your work ships to production and direct customer interaction. This is a full-time role for someone who has completed (or is about to complete) university and can join Invopop within 1–2 months. About Invopop Invopop helps global companies like SumUp, Fever, or DeepL manage electronic invoicing in over 25 countries through a single API. In the next five years, more than 40 countries, including the entire EU, will mandate that businesses send invoices electronically in XML formats and report them live to tax authorities. This reduces fraud and enables companies to automate invoice processing instead of relying on OCR. There’s only one catch: each country has defined unique standards, forcing global companies to build dozens of local integrations—or integrate once with Invopop. Invopop was founded by Sam Lown, co-founder and former CTO of Cabify (Spain's first tech unicorn), and Juan Moliner (ex-BCG), based on Sam’s experience dealing with this problem in ten Latin American countries with Cabify We’ve raised €2.8M from top-tier venture capital firms, including YCombinator (W23), and have been named the Best Startup at South Summit 2024 and Madrid's Hottest Startup of 2024 by Wired. Your mission as a Graduate Product Engineer You’ll own one or more Apps from research to production Design and build backend integrations in Golang Investigate new countries and systems: read docs, interpret requirements, ask questions, and turn ambiguity into a clear plan. Make product decisions with support: what to build first, what to cut, when to ship. Support customers using your integrations and iterate based on real feedback. Who we're looking for Degree in Computer Science or Telecommunications Engineering, or a proven track record building software outside formal education. Evidence of exceptional ability: top of your class, standout projects, or similar Builder mindset: side projects, open-source contributions, hackathons Fluent English (spoken and written). It’s our working language. You can join full-time in Madrid within the next 1-2 months Where you'll work We’re in Madrid (Calle Guadalquivir 22, El Viso), 5 minutes from Nuevos Ministerios. We enjoy the energy and collaboration of working together in person. We expect you to default to working in-person, but trust you to find the best balance between office and remote work. Why join Invopop Real ownership from day one: you’ll ship production work that customers rely on. Steep learning curve: you’ll grow fast with direct feedback and high standards. Work closely with Sam Lown (founding CTO of Cabify) and a small, senior team. Hyper-growth: 15 launches planned in 2026 and a 3x growth goal. High-signal culture: good product and good engineering win. Interview process The process has four steps: Intro call (30 min) Take-home exercise Technical interview (1h) Final interview, in person (1h)

TL;DR We’re a global e-invoicing platform operating in 25+ countries. Revenue grew 10x last year, and we plan to 3x in 2026. Role: own integrations end-to-end, research, define, build, ship, and iterate with customers. Looking for: 10+ years of backend experience, strong product judgment, fluent English, builder mentality, comfort with ambiguity, and complex domains. Compensation: €90k–€140k base + Stock Options. Location: Madrid (at least 3-4 days/month in our office, travel expenses paid). ⸻ Hi there 👋🏼, I’m Juan, the CEO of Invopop. We help companies like Fever, DeepL, Booksy, and SumUp issue and receive invoices that comply with local requirements across 25+ countries. We’re looking for a Staff Backend Product Engineer to join our team. If you enjoy solving hard problems with elegant software, owning your roadmap, and helping shape what we build (and how), this role could be a great fit. About Invopop Invopop helps global companies like SumUp, Fever, and DeepL issue and receive invoices across more than 25 countries through a single API. In the next five years, more than 40 countries, including the entire EU, will mandate that businesses send invoices electronically (in XML format) and report them in real-time to tax authorities. This reduces fraud and enables companies to automate invoice processing instead of relying on OCR. There’s only one catch: each country has defined unique standards, forcing global companies to build dozens of local integrations—or integrate once with Invopop. :) Invopop was founded by Sam Lown, co-founder and former CTO of Cabify, based on his experience dealing with this problem at Cabify. We’ve raised €2.8M from top-tier global VC firms, including YCombinator (W23), and have been named the Best Startup at South Summit 2024 and Madrid's Hottest Startup of 2024 by Wired. Your mission as a Staff Backend Product Engineer With Invopop, users build workflows by chaining Actions, each action being 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 (e.g., ERP), or transforming/enriching a document. As a Staff Backend Product Engineer, you’ll be the owner of several Apps end-to-end, from the initial research to maintaining 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 Who we’re looking for 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. We genuinely enjoy working in the office, and right now the team benefits significantly from high-context, fast decision-making in person. So our default is Madrid-based. That said, for a truly exceptional engineer who can operate independently, we can be flexible, as long as you can commit to coming to the Madrid offi

Quick facts We’re a global e-invoicing platform operating in 25+ countries Revenue grew 10x last year, and we plan to keep accelerating Role: analyze global e-invoicing regulation and turn it into guidance for product, engineering, sales, and support. Based in Madrid. Looking for: 3+ years in indirect tax / VAT, bilingual English, strong writing, and tech/product curiosity. Based in Madrid Compensation: Up to €70k base + bonus + Employee Stock Options (ESOP) If this sounds like you, keep on reading or apply directly! ⸻ Hi there 👋🏼, I’m Juan, CEO of Invopop. We help global companies like Fever, DeepL, and Booksy issue and receive invoices that comply with local requirements across 25+ countries. E-invoicing regulation is a core competency at Invopop. It affects what we build, how fast we launch new countries, how we earn customer trust, and how we show up in the market. For the past three years, I’ve led regulatory research myself. We now aim to professionalize it and establish the foundation of a robust e-invoice compliance function. In 2026, we plan to launch in 15 new countries and triple our business. Analyzing regulations and translating them into clear documentation, customer advice, and product decisions is essential for us. That’s why we’re hiring a VP of E-Invoicing Regulation. ⸻ About Invopop Governments are moving toward real-time invoice reporting. For global companies, that creates a messy web of country-specific rules, formats, APIs, and deadlines. Invopop abstracts that complexity behind a single, modern, developer-friendly API. We’re the flexible, API-first alternative to legacy providers such as EDICOM, Vertex, and Pagero, and to rigid ERP modules that weren’t built for real-time, cross-border scale. But our ambition goes far beyond compliance: we want to help build the next generation of global financial infrastructure — think the next SAP built from Europe. Founded by Sam Lown (co-founder & CTO of Cabify) and Juan Moliner (ex-BCG), backed by Y Combinator, we operate in 25+ countries today and are expanding fast. Your mission as VP of E-Invoicing Regulation You’ll be the person we (and our customers) trust on e-invoicing regulation and indirect tax. What you’ll own: Be our subject-matter expert on global e-invoicing regulation Write content (blog posts, docs) on e-invoicing regulation Support product, engineering, sales, and support teams with regulatory insight Own and improve Invopop’s internal regulatory knowledge base Define the country launch roadmap & lead the regulatory side of every launch Your journey at Invopop Here’s what success looks like over time. Month 1 Get up to speed on the product, customers, and existing regulatory knowledge Own one upcoming country launch on the regulatory side. Start answering real customer/prospect questions with the team Publish your first piece of content (e.g., a country mandate explainer) Propose the structure and operating rhythm for our knowledge base Month 3 Ship your first country launch together with a product engineer Become the default point of contact for regulatory questions across the company Start representing Invopop externally in events/webinars Work with marketing to consistently publish authorative content Begin leveraging AI and tooling to speed up regulatory research Month 6 Define the long-term shape of our compliance function Build a scalable model for supporting launches and customer questions Lay the foundations for a new einvoicing advisory service Start shaping hiring needs (or the next roles) as the scope grows Who we’re looking for Must-have 3+ years of experience in indirect tax, VAT, or similar regulatory domains Native or bilingual English. Spanish is not required. Strong writing: you can turn dense regulation into crisp, actionable guidance Founder mentality: you take responsibility, make tradeoffs, and operate well with ambiguity Nice to have Experience with e-invoici