Senior .NET Principal Engineer – Remote UK/Ireland

Primis; Remote; GBP 90,000 - 110,000; Full time

Job summary

A dynamic global payment platform is hiring a Principal Software Engineer .NET to design and develop critical systems and APIs. The role demands strong architectural leadership with over 10 years of experience. You will contribute to performance optimization and work with cross-functional teams. Enjoy the benefits of fully remote work across the UK, 45 days of annual leave, and comprehensive private healthcare. The company fosters an inclusive culture and encourages all qualified candidates to apply regardless of their match with the job description.

Benefits

45 days annual leave plus bank holidays

Comprehensive private healthcare

Annual learning budget for courses and certifications

Transparent career progression

Qualifications

• 10+ years of software engineering experience with proven architectural leadership.
• Strong ability to navigate complex system design confidently.
• Experience with modern agile methodologies.

Responsibilities

• Design and develop mission-critical platform services, APIs, and merchant portals.
• Drive performance optimisation and system reliability.
• Champion engineering excellence in architecture and code quality.

Skills

C#

.NET Core

Event-driven architecture

Microservices design

Azure

DevOps practices

Tools

SQL

RabbitMQ

HTML

CSS

JavaScript

Job description

A dynamic global payment platform is hiring a Principal Software Engineer .NET to design and develop critical systems and APIs. The role demands strong architectural leadership with over 10 years of experience. You will contribute to performance optimization and work with cross-functional teams. Enjoy the benefits of fully remote work across the UK, 45 days of annual leave, and comprehensive private healthcare. The company fosters an inclusive culture and encourages all qualified candidates to apply regardless of their match with the job description.