Principal Software Architect - Remote AI Platform

Coinscapture; United Kingdom; Remote; GBP 120,000 - 180,000; Full time

Job summary

Testlio is hiring a Principal Software Architect to shape our application and platform architecture. You will be a hands-on contributor driving production-ready, distributed systems and secure AI-enabled surfaces across Testlio’s software platform.

The role emphasizes ownership, autonomy, and collaboration with executive leadership, while delivering scalable, observable, and cost-conscious infrastructure in a fully remote setup for UK/Poland/Czech Republic residents.

Qualifications

• 15+ years of hands-on software development experience building cloud-native, business-critical platforms.
• Advanced mastery of distributed system patterns, data modeling, event-driven design, and database technologies (Relational and NoSQL).
• Proven track record designing and migrating application infrastructures, specifically moving from monolithic architectures to modular services.
• Deep experience establishing enterprise-ready patterns in AWS, emphasizing high availability, cost optimization, and secure infrastructure.
• Strong familiarity with modern full-stack code environments, including front-end web frameworks, scripting languages, and CI/CD pipelines.
• Practical, production-grade experience deploying AI/ML or LLM-based solutions with an emphasis on observable, safe automation patterns.

Responsibilities

• Architect, develop, and deploy scalable, production-grade services directly across the core Testlio software platform.
• Author clear architectural standards and reference patterns that define domain boundaries, decoupling our current codebase into modular services.
• Partner with the Director of Engineering to execute frontend framework consolidation, improving operational performance and observability.
• Safeguard system efficiency and regulatory posture by designing with security, cost-efficiency, and ISO 27001 expectations at the center.
• Integrate secure AI/LLM patterns into customer-facing surfaces, establishing strict operational guardrails and failure modes for our Quality API.
• Advise executive, product, and engineering teams on major technical tradeoffs, translating business needs into clean technical strategies.

Skills

15+ years experience

Distributed systems

Data modeling

Event-driven design

Relational & NoSQL databases

AWS architecture

Frontend frameworks

CI/CD pipelines

AI/LLM deployment

Tools

AWS

CI/CD tools

Job description

Testlio is hiring a Principal Software Architect to shape our application and platform architecture. You will be a hands-on contributor driving production-ready, distributed systems and secure AI-enabled surfaces across Testlio’s software platform.

The role emphasizes ownership, autonomy, and collaboration with executive leadership, while delivering scalable, observable, and cost-conscious infrastructure in a fully remote setup for UK/Poland/Czech Republic residents.