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Principal Software Architect
Contract type
Ongoing
Work mode
Remote · EMEA
Experience
Lead / principal · 15+ years
Job description
A Principal Architect role at Testlio, a hands-on individual contributor position shaping application and platform architecture for the company's distributed software testing platform. The role focuses on modernizing the core monolith into modular, distributed services and integrating AI/LLM capabilities.
At a glance
- Work mode
- Remote · EMEA
- Languages
- English – fluent
What you'll do
- 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 the 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 the Quality API
- Advise executive, product, and engineering teams on major technical tradeoffs, translating business needs into clean technical strategies
What we're looking for
- 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
- Fluency in English with exceptional written and verbal communication skills, especially when presenting advanced architecture concepts to business leaders
- Ability to operate effectively as an individual contributor in fast-paced, ambiguous environments, showing proactive problem ownership
- Strong collaboration and alignment focus, capable of guiding distributed engineering teams and technical peers without direct authority
- Outstanding analytical thinking, balancing a broad long-term technology vision with practical, short-term implementation constraints
- Natural inclination for remote-first work, successfully communicating and documenting technical decisions asynchronously across global time zones
Benefits
- Flexible paid time off—including national holidays, personal days, and sick days
- Stock options
- $300 annual learning stipend
- Fully remote and globally distributed team
How to get hired
- 1Application
- 2Recruiter interview
- 3Stakeholder Interview
- 4Technical Exercise
- 5Offer & background check
Apply
About Testlio
Fully managed crowdsourced testing platform
Testlio's fully managed crowdsourced testing platform, powered by proprietary intelligence technology - LeoCore™, integrates expert, on-demand testers directly into your release process. Ship faster and more confidently with global coverage across 600,000+ devices, 800+ payment methods, 150+ countries, and 100+ languages.
Key facts
- Female-founded company, and half of the team identifies as women
- Fully remote and globally distributed team
- Growing, profitable, and cash-strong
- High NPS score and a 4.7 rating on G2
- Business model is global, enterprise, and subscription-based
- Several of the largest clients have been with Testlio for 7+ years, and many spend $500K+/year
- Global coverage across 600,000+ devices, 800+ payment methods, 150+ countries, and 100+ languages
What they value
- Inclusive, purpose-driven culture
- Remote work
- Collaboration
- Sustainable pace