We’re Kabilio, a company backed by two leading venture capital firms, founded by experienced entrepreneurs, Alex Valls and Jose Ojeda, with a strong track record in building and scaling successful tech companies.

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What We’re BuildingOur goal is to become the go-to Financial Operating System for accounting firms and SMEs in Southern Europe, unifying accounting, tax, payments, planning, and banking into a single platform. We are currently a tight-knit team of 65 people and plan to grow in 2026, with a strong focus on engineering, product design, and sales.
Why this role matters?Today, Kabilio already runs three core products in production Invoices — Processing, Bank Transactions, and Invoicing — used daily by real customers. At the same time, we’re building our Accounting platform, the product that defines our long-term vision and the reason Kabilio was founded. AI sits at the core of everything we build,



from automating and categorizing financial data to enabling intelligent workflows and decision making across the entire financial lifecycle.It is also part of how we work as engineers, helping us move faster while building smarter product capabilities.
As a Full Stack Engineer at Kabilio, you will build and own product features end-to-end, working closely with Ivan, CTO, Jorge, Karel and Arnau, Tech Leads, as well as the developers and Product Managers. You’ll contribute to both frontend and backend systems, helping us ship high-quality software that is used daily by real customers.
You’ll work in a small technical team where engineers take real ownership of what they build, from early design decisions to production.
What you’ll do?
- Use modern tooling (including AI-powered tools and internal integrations) to accelerate development and explore solutions (e.g. Claude Code).
- Work in an AI-augmented development workflow, using tools that help engine

📌 Senior Fullstack Engineer (Barcelona)
🏢 Kabilio
📍 Barcelona