Senior Fullstack Developer

Sago Mini is an award-winning company devoted to play. With three subscription services and over 10 million monthly active users, Sago Mini creates apps that seed imagination, grow wonder, and bring thoughtful design to life for preschoolers and parents worldwide. Proudly Canadian, Sago Mini is a subsidiary of Spin Master, a leading global children’s entertainment company. Along with sister studios Toca Boca and Originator, Sago Mini is part of the Piknik bundle – a collection of the world’s best apps for kids in one subscription.
About the Role

Lylli Studio is on a mission to make reading magical for children everywhere. Our app combines thousands of children’s books with personalized stories, helping families discover new ways to read, learn, and imagine together.

Lylli is looking for a Senior Fullstack Developer to help us scale the platform, build delightful new features, and bring the joy of reading to millions of families worldwide.

What You'll Be Doing

• Lead the development of end-to-end features, from database design and APIs to frontend interfaces.
• Collaborate with product managers, designers, and other engineers to turn ideas into reality.
• Build scalable backend services (Java Spring Boot, Node.js) and polished frontend experiences (React).
• Ensure performance, security, and reliability across the stack as we scale internationally.
• Play an active role in architectural decisions and product strategy.

Qualifications and Skills

• 5+ years of experience as a fullstack engineer, with strong skills in both backend and frontend.
• Solid knowledge of Java and/or Node.js and preferably React.
• Experience with cloud infrastructure (AWS, GCP, or Azure), CI/CD pipelines, and scalable system design.
• Strong understanding of relational databases and APIs (Postgres).
• A product-driven mindset – you care about usability, performance, and making the experience magical for the end user.
• Bonus: Experience with mobile development, audio streaming, or content-heavy platforms.

The anticipated pay range for candidates who will work in Toronto is $105,000 to $130,000 Per Annum. The offered pay to a successful candidate will be dependent on several factors that may include but are not limited to years of experience within the job, years of experience within the required industry, education, etc. Spin Master Inc. is a multi-state employer, and this salary range may not reflect positions that work only in other states.

This job posting is tied to an open vacancy.
 

About the Process

• You’ll get an email response confirming we’ve received your application, and we’ll let you know within a few weeks if we’d like to schedule a follow-up.
• If you’re moving ahead, we’ll book a call to learn more about your experience.
• If that goes well, we’ll send you a short homework assignment to get a better feel for your skillset.
• If the assignment goes well, we’ll book an interview with you and the hiring team to dive deeper.
• To wrap up the process, you’ll meet with a couple more members of our team for a brief chat prior to a decision being made.

We welcome and encourage applications from people with disabilities. Accommodations are available upon request for candidates taking part in all aspects of the selection process.

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Based in Toronto, Sago Sago Toys is a subsidiary of Spin Master Limited a leading global children’s entertainment company that creates, designs and manufactures a diversified portfolio of innovative toys, games, products and entertainment properties. We hire humble and collaborative people who care about doing great work. Sago Mini is an equal opportunity employer. We value diversity at our company.