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Principal Software Architect

Remote, in EMEA·Added 4 days ago

Testlio

5 open roles

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Overview

Job details

Fully remote
Only from certain places, per the ad: “This is a 100% remote role open to those who reside in the eastern half of USA or UK, or Poland”

Requirements

Have the right to work in Spain
Testlio doesn't mention sponsorship, but this role may fit the Digital nomad visa.
Work in English
English is required, per the ad.
Have 15+ years of experience
Staff-level role.

Requirements

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.

The role

Testlio's fully managed crowdsourced testing platform, powered by our 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. To learn more, visit testlio.com.

We are hiring a Principal Architect to serve as a hands-on individual contributor who will shape our application and platform architecture, driving production-ready systems that directly enable our next generation of intelligent, distributed software testing solutions.

What you'll do

High Ownership and Autonomy: Be a foundational technical leader steering a profound platform transformation, making critical structural decisions that balance immediate system delivery with long-term enterprise scalability.
Pragmatic AI & System Innovation: Step past the hype to integrate actionable AI capabilities directly into high-throughput surfaces, modernizing our core monolith into a robust distributed network alongside our product and executive leaders.
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.

How you'll work

Location: This is a 100% remote role open to those who reside in the eastern half of USA or UK, or Poland

Hiring process

At Testlio, we aim to hire individuals who are excited about their role, thrive in a fully remote environment, and have strong long-term potential with our team. Because we are a fully distributed company, our interview process includes conversations with several team members so you can get a well-rounded understanding of the role, the people you'll work with, and how we collaborate. As a result, our interview process typically takes 3-4 weeks to complete.

Application
Recruiter interview
Stakeholder Interview
Technical Exercise
Offer & background check

About Testlio

Testlio is a software testing company that provides managed QA services, combining a network of freelance testers with a proprietary platform to help clients deliver quality software. Founded in 2012 and headquartered in Austin, USA, Testlio serves a global client base, offering services such as functional testing, localization testing, and payment testing across various industries.

In Spain, Testlio operates with a remote-friendly approach, hiring both full-time employees and freelance testers. The company's open roles in Spain include engineering and delivery leadership positions, as well as freelance testing opportunities, making it an attractive option for international professionals seeking flexible work in the QA and tech space. Testlio emphasizes a distributed work culture, with team members located across the globe, and offers opportunities for career growth in a fast-paced, client-focused environment.

Industry: QA
Founded: 2018
Employees: 500–1,000
Headquarters: Austin, USA
Website: testlio.com

Good to know if you are moving

Testlio operates a remote-first model, allowing employees and freelance testers to work from anywhere, including Spain.
The company has a strong presence in Europe, with leadership roles based in the EMEA region, offering opportunities for international professionals.
Testlio hires freelance testers globally, providing flexible work arrangements for those looking to enter the tech industry.
The company's culture emphasizes collaboration and quality, with a focus on professional development and growth.
Testlio's global client base offers exposure to diverse industries and technologies, beneficial for career advancement.

In their own words

About the company & team

Great Culture: Testlio is a female-founded company, and half of our team identifies as women. We're proud of our inclusive, purpose-driven culture where people genuinely enjoy collaborating. As part of our team (we call ourselves TestLions), you'll help create exceptional digital experiences for our customers, while also contributing to our freelance network.
Remote Work: Our culture is built around remote work. We've created systems to allow us to successfully work together asynchronously as a fully remote and globally distributed team. Testlio provides the tools and guidance for everyone to succeed in their careers in a fully remote setting. Our working style encourages everyone to make decisions, communicate effectively, and work at a sustainable pace.
Investment in You: Your growth and well-being matter to us. You'll have flexible paid time off-including national holidays, personal days, and sick days-plus stock options so you can grow with Testlio. We also provide a $300 annual learning stipend to support your personal and professional development.
Winning Business: Testlio is growing, profitable, and cash-strong. We are leading our industry with exceptional clients who provide us with a high NPS score and a 4.7 rating on G2. Our business model is global, enterprise, and subscription-based. Several of our largest clients have been with us for 7+ years, and many spend $500K+/year with Testlio.

Additional information

Testlio is an equal-opportunity employer deeply committed to creating an inclusive environment for people of all backgrounds and identities. We are female-founded, and half of our team members identify as women. For more information, see the DEI section of our website.

All open roles at Testlio