Principal Software Engineer

Summary

Join Testlio as a Principal Software Engineer and help deliver data-driven, AI-powered solutions that significantly impact our quality software testing services. This fully remote position, open to EMEA and APAC candidates (excluding high-cost-of-living areas), requires a distinguished engineer with extensive experience in enterprise architecture and full-stack solution engineering. You will lead architectural roadmaps, build and implement high-quality products, advance AI-augmented practices, and define quality standards. The role involves close collaboration with designers and stakeholders, debugging complex problems, and mentoring team members. Testlio offers a remote-first culture, flexible paid time off, a learning stipend, stock options, and a supportive, inclusive environment.

Requirements

• A university degree in Computer Science, Software Engineering, or equivalent
• 10 - 15 years of full-stack coding experience, building modern cloud-native applications
• Strong affinity with our tech stack of React, TypeScript, NodeJS, GraphQL, PHP, MySQL, AWS, and Kafka
• In-depth knowledge of core browser concepts and responsive web design
• Practical knowledge of modern API architecture, microservices, and event-driven design
• Proven track record of taking ownership, conducting technical design, and successfully delivering results
• Fluency in English, with excellent written and verbal communication skills
• Organized and thorough with a commitment to quality
• Results-oriented, with data-driven decision-making and a focus on delivering impactful outcomes
• Strong preference for a remote working environment
• A passion for staying current with the latest industry trends and technologies, and a drive to continuously improve and innovate

Responsibilities

• Lead architectural roadmaps, technical investigations, prototyping, and drive technical decisions needed for impact
• Provide quality control for Architectural Decision documents
• Build and implement performant, scalable, and quality products in an iterative approach
• Advance AI-augmented software engineering practices by incorporating productivity-boosting GenAI automation across the software development lifecycle
• Define & advocate quality standards for code, coaching your fellow engineers & constantly raising the bar for quality
• Work closely with designers and business stakeholders to bring the best solutions to end users
• Lead debugging and root cause analysis of complex problems, and offer solutions
• Work in a team environment: contribute to tasks and goals; follow team processes (Scrum) and rituals
• Help and mentor other team members, proactively share and document knowledge

Preferred Qualifications

• Experience in writing automated tests is a strong plus
• AI/ML experience is a strong plus
• Mobile Development: Experience in developing and optimizing mobile applications (whether using fully native frameworks for iOS/Android or cross-platform solutions such as React Native) is a plus
• I hold a Solutions Architect certification (such as AWS Certified Solutions Architect Professional - CSAP)
• I have a public track record of my contributions and coding expertise, featuring significant contributions to prominent open-source projects
• I’ve held an Architect role at a leading tech company (FAANG-level), demonstrating my ability to operate at the highest industry levels
• I have played a pivotal technical role in a startup, leading it from inception to a successful product launch, essentially acting as the lead technical powerhouse of the team

Benefits

• Flexible paid time off—including national holidays, personal days, and sick days
• Stock options
• $300 annual learning stipend to support your personal and professional development
• Remote Work