Principal Software Engineer: Cloud-Native Architect

Instil; Belfast City District; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Discretionary bonus

Pension scheme

Private healthcare

Life assurance

35 days holiday

Learning & development

Job summary

Instil invites a Principal Software Engineer to shape and deliver scalable software solutions across Java, Python, C#/.NET, and TypeScript. You will lead architecture, drive cloud-native initiatives on AWS/Azure/GCP, and mentor teams to raise engineering standards, while embracing AI-assisted practices for higher quality production systems.

Based in Northern Ireland, you’ll contribute to cross-team delivery, guide technical direction, and champion robust design, security, and maintainability in

Qualifications

• Extensive experience building production systems using Java, Python, C#/.NET or TypeScript.
• Significant experience with cloud platforms (AWS preferred, Azure or GCP also considered).
• Strong understanding of system design, distributed systems, and scalable architectures.
• Experience building and consuming APIs (REST and event-based systems).
• Experience making architectural decisions and providing technical guidance on complex projects.
• Comfortable working across the full software delivery lifecycle (build, deploy, operate).
• Strong understanding of software engineering fundamentals and best practices.
• Ability to take ownership and drive technical solutions from concept through to delivery.
• Excellent communication and stakeholder engagement skills.
• Experience mentoring engineers and supporting team development.
• Interest in modern AI-enabled engineering practices and continuous improvement.

Responsibilities

• Design, build, and guide the delivery of software solutions using Java, Python, C#/.NET and/or TypeScript.
• Develop cloud-native applications across AWS, Azure, or GCP.
• Provide technical leadership on complex projects and programmes of work.
• Contribute to system architecture and make key technical decisions.
• Work with distributed systems, APIs, and event-driven architectures.
• Collaborate with platform teams to ensure reliable, scalable deployments.
• Contribute to CI/CD pipelines and improve engineering workflows.
• Leverage AI-assisted development tools and agentic workflows to improve productivity and software quality.
• Identify opportunities to automate engineering tasks through intelligent tooling and AI.
• Mentor engineers and support technical growth across teams.
• Work closely with cross-functional teams to deliver production-ready software.
• Help establish and promote engineering standards, best practices, and ways of working.

Skills

Java

Python

C#/.NET

TypeScript

Cloud platforms

Architectural design

Mentoring

Tools

AWS

Azure

GCP

Docker

Kubernetes

Terraform

Job description

Instil invites a Principal Software Engineer to shape and deliver scalable software solutions across Java, Python, C#/.NET, and TypeScript. You will lead architecture, drive cloud-native initiatives on AWS/Azure/GCP, and mentor teams to raise engineering standards, while embracing AI-assisted practices for higher quality production systems.

Based in Northern Ireland, you’ll contribute to cross-team delivery, guide technical direction, and champion robust design, security, and maintainability in