Senior Backend Engineer — Product‑Minded .NET/C# in EU

Finom; Portugal; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Stock options program

Job summary

Finom is seeking a Senior Backend Engineer who builds products and thrives in a collaborative, cross-functional environment. You will help design and scale our financial infrastructure for hundreds of thousands of European businesses, owning meaningful parts of the backend stack.

You’ll work with Backend, Frontend, Mobile, ML/AI, and QA engineers to ship data-intensive features while maintaining security and quality in a regulated environment.

Qualifications

• 5+ years of professional backend development with a product mindset.
• Excellent knowledge of .NET platform and C#.
• Hands-on experience architecting distributed systems in production.
• Proven ability to collaborate with product, design, and engineering teams.
• Strong business acumen and understanding of linking work to company goals.
• Clear, concise English communication across audiences.
• Builder's mentality: shipping great products, not just code.

Responsibilities

• Own and evolve backend systems within a product-driven domain area.
• Collaborate with frontend/mobile/ML/QA teams to design end-to-end solutions.
• Balance technical excellence with pragmatic delivery in a regulated environment.
• Mentor colleagues and improve team processes; take ownership of outcomes.

Skills

Backend development

.NET/C#

Distributed systems

Cross-functional collaboration

Business acumen

English communication

Shipping mindset

Tools

PostgreSQL

Redis

RabbitMQ

Kafka

Kubernetes

GCP

React

Swift

Kotlin

Python/ML

Playwright

Appium

Job description

Finom is seeking a Senior Backend Engineer who builds products and thrives in a collaborative, cross-functional environment. You will help design and scale our financial infrastructure for hundreds of thousands of European businesses, owning meaningful parts of the backend stack.

You’ll work with Backend, Frontend, Mobile, ML/AI, and QA engineers to ship data-intensive features while maintaining security and quality in a regulated environment.