Senior Software Engineer (Core Platform)

Location: This is a 100% remote role open to those who reside in EMEA or APAC regions. Due to our compensation strategy, we are not considering applicants from high-cost-of-living locations such as Singapore, Benelux, DACH, France, Nordics, and the UK.

About The Job

Testlio’s fully managed crowdsourced testing platform 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 www.testlio.com.

We are hiring a Senior Software Engineer to help us deliver solutions that harness data & the latest AI advancements to generate measurable business impacts, ensuring our leadership in quality software testing services. Learn more about the Testlio Product team here.

Why will you love this job?

• Shape the future of testing with AI: Be at the forefront of innovation, building solutions that harness the power of AI to automate tasks, generate valuable insights, and drive testing efficiency.
• Make a tangible impact: Your work directly influences the success of our clients and the quality of their digital products. See your contributions translated into real-world improvements that benefit millions of users.

Why will you love being a part of Testlio?

• Great Culture: Testlio is a female-founded company, and half 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.

What would your day look like?

• Work in a team environment: contribute to team tasks and goals; follow team processes (Scrum) and rituals.
• Work closely with designers and business stakeholders to bring the best solutions to end users.
• Complete technical design of full stack system components that fit into long-term architecture, addressing all the functional and non-functional requirements.
• Build and maintain core Testlio product.
• Build and implement performant, scalable, and quality products, in an iterative approach.
• Write quality code, push for high standards, conduct code reviews.
• Write automated tests and conduct manual testing of changes.
• Lead debugging and root cause analysis of complex problems, and offer solutions.
• Help and mentor other team members, proactively share and document knowledge.

What do you need to succeed?

Technical Skills

• A university degree in Computer Science, Software Engineering or equivalent.
• 5-10 years of full-stack coding experience, building modern cloud-native applications.
• Strong affinity with our tech stack of TypeScript, NodeJS, React, Graphql, PHP, MySQL, AWS, Kafka.
• In-depth knowledge of core browser concepts and responsive web design.
• Practical knowledge of modern API architecture, microservices, and event-driven design.
• Experience in writing automated tests is a strong plus.
• AI/ML experience is a plus.
• AWS Solutions Architect certification is a plus.

Human Skills

• 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.
• Preference for a remote working environment, collaborating closely with peers within the EMEA timezone.

What is the Candidate Consideration Process

We do our best to bring on individuals who will be excited about their role and have the potential for a great future with Testlio. Since we are 100% distributed, we’d like you to meet with multiple people from our organization to give you an idea of who you would be working with, your role expectations, etc. Our interview process can take about 3 to 4 weeks to complete.

• Application
• Recruiter interview
• TestGorilla assessment
• Hiring Manager interview
• Take Home assessment
• ~2 Team and Stakeholder interviews
• Reference checks
• Offer

Diversity and Inclusion

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 46% of our team identifies as women. See the DEI section of our website for more information.