Middle (Aspring senior) Software Development Engineer

Margo Group

Warsaw Remote contract

Posted: February 3, 2026

Quick Summary

We are seeking a skilled software development engineer to join our team in Warsaw, Poland. The ideal candidate will have experience in building reliable data pipelines, billing calculation engines, and financial data services. The successful candidate will be responsible for ensuring financial data is accurate, transparent, and scalable.

Job Description

The Financial Gateway team builds the core platform responsible for delivering accurate, transparent, and timely financial data to internal stakeholders and external clients.
We operate at the heart of the company’s financial ecosystem, designing reliable data pipelines, billing calculation engines, and financial data services that power billing systems, FP&A, intercompany flows, and reporting processes.

Our mission is to ensure financial data is: Correct Traceable Scalable Consistently available across systems

This is a data-intensive, architecture-driven backend role focused on financial correctness, integrations, and system reliability — not UI or feature CRUD development.

What you’ll love about us:

Independence and freedom to take initiative
Authenticity and transparency
Clear, achievable goals
Driven people who are passionate about what they do
A skilled team, eager to share their knowledge and learn from you
A focus on quality over quantity in everything we do

About us:

We're MARGO. Founded in Paris in 2005, we’ve since expanded to two more capitals - London and Warsaw. We specialize in IT outsourcing, focusing on complex, cutting-edge IT projects. Our success is fueled by strong relationships with ambitious, visionary clients who are dedicated to innovation and progress.

At MARGO, we believe in people. That’s why we empower our team members with substantial responsibility, the freedom to take initiative, and endless opportunities for growth. Here, everyone p

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