OverviewSenior Software Engineer at Kompanion to help build an AI-native platform for tax, accounting, and financial workflows.

You'll own features end-to-end and influence product and engineering culture in a small, growing team.

You work across the stack, improve reliability, security, and performance, and collaborate with Tax, Accounting, Growth, and Operations.

This is a hands-on role with broad ownership and a clear impact on product and platform quality.

ResponsabilidadesOwn features end to end from definition to production and validation

Build across the stack with emphasis on backend systems and business logic

Operate the platform in production, improving reliability, performance, observability, and security

Collaborate closely with Tax, Accounting, Growth, and Operations

Develop integrations, automations, internal tools, and AI-powered features

Improve architecture, developer experience, testing, and engineering standards





Review code, mentor engineers, and participate in hiring

Requisitos principales5+ years of experience building and operating production software

Strong backend engineering experience

Proficiency with Java and Spring Boot or ability to become productive quickly

Solid PostgreSQL knowledge (data modeling and query performance)

Ability to work with React or Next.js when needed

Experience owning systems in production

Strong fundamentals in clean code, testing, security, and system design

High autonomy and ability to convert ambiguous problems into shipped products

Degree in Computer Science, Software Engineering, or related field welcome but not required

hands-on

low-ego

clear communication

Java

Spring Boot

PostgreSQL

📌 Desarrollador Backend/Fullstack (Barcelona)
🏢 Experis
📍 Barcelona