Principal Software Engineer (Corp Functions)

TP ICAP; Belfast; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading financial services firm is seeking a Principal Software Engineer in Belfast to mentor engineers and manage cloud infrastructure. The role involves designing and developing software with a strong emphasis on quality and integrating with cross-functional teams. Candidates should have substantial .NET experience, particularly in finance, along with a solid grasp on AWS and IaC practices. This position offers a dynamic work environment with a focus on high-quality code.

Qualifications

• Proven experience as a Senior .Net Engineer, preferably in the finance sector.
• Strong understanding of AWS services and hands-on experience with IaC using AWS CDK in Python.
• Experience with automated testing frameworks and solid understanding of unit testing principles.

Responsibilities

• Mentor other engineers and ensure alignment with project goals.
• Design, develop, and maintain software for seamless integration.
• Implement and maintain Infrastructure as Code (IaC) using AWS CDK.

Skills

.Net development

AWS services

Infrastructure as Code (IaC)

Automated testing

Leadership

Agile mindset

Problem-solving

Communication skills

Tools

Docker

Git

JIRA

Job description

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Principal Software Engineer (Corp Functions), Belfast

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Client:

TP ICAP

Location:

Belfast, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

70e33f7b6e92

Job Views:

6

Posted:

12.08.2025

Expiry Date:

26.09.2025

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Job Description:

Role Responsibilities

• Mentor other engineers in the team, whilst ensuring alignment with project goals and timelines across the team.
• Design, develop, and maintain software, ensuring seamless integration and performance.
• Collaborate with cross-functional teams, including Business Analysts (BAs) and Project Managers (PMs), to gather and refine requirements.
• Implement and maintain Infrastructure as Code (IaC) using AWS CDK with Python to automate deployment and management of cloud resources.
• Ensure high-quality code through automated testing, particularly unit testing, and maintain a strong emphasis on code quality and complexity.
• Oversee the implementation and management of CI/CD pipelines to streamline the software development lifecycle.
• Monitor system performance, identify issues, and implement solutions to ensure high availability and performance.
• Ensure security best practices are followed and implement necessary measures to protect cloud infrastructure and applications.
• Participate in agile ceremonies and contribute to an agile mindset within the team.
• Maintain detailed documentation of code, processes, and system configurations.

Experience / Competences

• Proven experience as a Senior .Net Engineer, preferably in the finance sector.
• Strong understanding of AWS services and hands-on experience with Infrastructure as Code (IaC), particularly using AWS CDK in Python.
• Experience with Entity Framework (or other CRMs) is beneficial
• Experience designing and building systems using a contract-first methodology is beneficial
• Experience with writing tests or scripts in Python is beneficial
• Demonstrated experience with automated testing frameworks and a solid understanding of unit testing principles.
• Experience working in agile environments and a strong agile mindset.
• Attention to detail and the ability to work under pressure without being distracted by complexity.
• Excellent problem-solving skills and the ability to think critically and creatively.
• Leadership and collaboration skills, with the ability to communicate effectively with team members and stakeholders.
• Passion for code quality and a commitment to maintaining high standards of software development.
• Strong communication skills, both written and verbal.
• Fluent in back-end development using .NET.
• Strong understanding of microservices architecture in cloud environments.
• Strong grasp of database design and experience with relational and/or NoSQL databases.
• Competent in using Docker for containerisation.
• Familiarity with Kubernetes, relying on the DevOps Engineer for orchestration.
• Proficiency in using Git for version control and JIRA for backlog management.
• Experience with CI/CD pipelines and tools.
• Ability to write clear and concise documentation.
• Ability to work effectively as part of a team and independently when required.