Senior Software Engineer

Senior Software Engineer – POS & Cash Systems Compliance (Portugal)

Location : Remote (Portugal-based)

Contract Type : Full-time

Language Requirements : English (B2 minimum), Portuguese (native)

About the Role

Our client, a European leader in fiscal middleware and POS system compliance, is seeking a Senior Software Engineer to join their growing team in Portugal. This role is ideal for someone with strong technical expertise in C# / .NET , a passion for building scalable solutions, and experience working directly with clients in the retail or hospitality sectors , particularly around cash register systems and POS integration .

You will contribute to the development of software that ensures compliance with the Portuguese fiscal laws , including SAF-T and standards compliant to the Autoridade Tributaria.

Key Responsibilities

• Design, develop, and maintain .NET-based middleware and POS / cash system integration solutions.
• Collaborate with product and compliance teams to implement features aligned with French fiscal regulations.
• Interface with clients to understand technical requirements and provide integration support.
• Participate in certification processes to meet AT standards.
• Write clean, maintainable code and contribute to architectural decisions.