Graduate Product Engineer
Invopop8mo ago
You will design and build backend integrations using Golang for a global e-invoicing platform. The role offers high ownership and direct customer interaction.
€45kHybrid in MadridNo Spanish needed
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91,000+ live jobsStaff Product Engineer
Hybrid in Madrid·Full-time·Added 8 months ago (last checked 22 Oct)
Our summary
- Salary
- €90,000 - €140,000 a year
About €4,870 - €7,160 a month after tax, or €5,380 - €8,550 under the Beckham regime.
- Work mode
- Hybrid, Madrid
- Contract
- Full-time
- English
- Required
- Experience
- 10+ years
Visa options
The ad doesn’t mention sponsorship
Not a refusal, but not a yes. Worth asking in your first message.
Pay clears the EU Blue Card threshold
The advertised pay is over the €41,356 bar, so the route exists if Invopop uses it.
Skills
Requirements
What 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.
Pay & benefits
What you'll get
€90k-€140k base + Stock Options, depending on seniority level.
The role
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 (4-5 days/week in office).
⸻
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.
What you'll do
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
How 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.
Why join Invopop
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 3x 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.
Hiring process
Intro call (30 min)
Take-home exercise (optional)
Technical interview (1h)
Final interview, in person (1h)
About Invopop
Invopop is a fintech company specializing in e-invoicing and tax compliance infrastructure. It provides a cloud-based platform that helps businesses generate, validate, and deliver electronic invoices in compliance with various national regulations, particularly in Latin America and Europe. The company operates as a B2B SaaS provider, offering APIs and tools that integrate with existing accounting and ERP systems. Invopop is a relatively small, engineering-driven company, with a focus on building robust, scalable solutions for the complex world of digital tax compliance.
Invopop has its main office in Madrid, Spain, which serves as a hub for its engineering and product development. The company is actively hiring for backend and solutions engineering roles in Spain, indicating a strong commitment to building its technical team there. For international professionals, Invopop offers the opportunity to work in a fast-paced startup environment, tackling challenging technical problems in a niche but growing field. The company's culture emphasizes technical excellence and innovation, making it an attractive option for engineers looking to make a significant impact in a specialized area of fintech.
- Industry
- Fintech
- Founded
- 2020
- Employees
- 11–50
- Headquarters
- Madrid, Spain
- In Spain
- Madrid
- Website
- invopop.com
Good to know if you are moving
- Invopop is a remote-first company, allowing flexibility in work location, though the main office is in Madrid.
- The company is an international team, with employees from various countries, making it a welcoming environment for non-Spanish speakers.
- As a startup, Invopop offers the opportunity to work on greenfield projects and have a direct impact on the product roadmap.
- The company provides competitive compensation and equity packages, which can be attractive for international hires.
- Invopop is actively hiring for multiple engineering roles in Spain, indicating a growing team and potential for career advancement.
In their own words
About the company & team
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.
Location
Invopop · Madrid
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