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Rakuten Kobo

.NET Software Engineer III (12 month contract)

Sorry, this job was removed at 08:24 p.m. (EST) on Monday, Nov 17, 2025
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In-Office
Toronto, ON
In-Office
Toronto, ON

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Job Description:

Here at Rakuten Kobo Inc. we offer a casual working start-up environment and a group of friendly and talented individuals. Our employees rank us highly in terms of commitment to work/life balance. We realize that for our people to be innovative, creative and passionate they need to feel valued and supported. 
 

If you’re looking for a company that inspires passion, personal, and professional growth – join Kobo and come help us on our mission of making reading lives better.
 

The Role:

Rakuten Kobo is seeking a highly skilled .NET Software Engineer III for a critical 12 month contract role within our Application Platform Team. You will play a pivotal role in our strategic initiative to migrate our last remaining monolith to a modern microservices architecture.
 

This role is divided into two key phases over the 12-month term: 
 

Phase 1 (First 6 Months): Platform Foundation & Migration. You will be instrumental in untangling complex dependencies, factoring out core platform code, and standing up the foundational elements of our new microservices platform. This will involve extensively upgrading our existing .NET Framework codebase to modern .NET 8, addressing incompatibilities, and managing package upgrade paths. 
 

Phase 2 (Next 6 Months): Product Team Enablement & Refinement. As the platform matures, you will actively support and advise Kobo’s product teams. This includes coding alongside them, providing hands-on guidance, and helping them decompose and migrate their domain code onto the new application platform. You will also continue to refine and enhance the platform itself based on evolving needs. 
 

The Platform Engineering team operates with a "you build it, you run it" philosophy. You'll contribute to technical designs, help test your teammates' code, monitor your applications, and assist in resolving production issues. It’s a highly collaborative, energetic, and high-functioning team where self-starters thrive, operating independently while also actively engaging with peers to solve problems, share updates, and bounce ideas. You’ll be well supported throughout this challenging and rewarding project. 

 

The Skillset: 

We are looking for a Senior .NET Engineer with proven experience in large-scale modernization efforts. 

 

Must-Have Experience: 

  • Extensive experience migrating from monoliths to microservices, specifically involving the decomposition of large applications. 

  • Deep and proven knowledge of C# .NET, with extensive experience migrating and upgrading large codebases from .NET Framework to modern .NET (up to .NET 8). This includes managing incompatibilities and complex package upgrade paths. 

  • Strong understanding and practical application of Domain Driven Design (DDD) principles in architectural and refactoring efforts. 

 

Highly Valued Skills & Experience: 

  • Ability to communicate complex technical concepts effectively to both technical and cross-functional audiences. 

  • Experience with distributed systems (e.g., message queuing, RESTful services, eventual consistency). 

  • Experience working in both mono-repo and multi-repo environments. 

  • Proficiency in refactoring techniques and applying design patterns. 

  • Ability to troubleshoot and resolve complex production issues efficiently. 

  • Experience managing containerized applications in a Kubernetes environment. 

  • Strong commitment to quality through comprehensive unit testing. 

  • Experience working effectively within cross-functional teams, providing guidance and collaborative support. 

About Rakuten Kobo Inc.

Owned by Tokyo-based Rakuten and headquartered in Toronto, Rakuten Kobo Inc. is one of the most advanced global ecommerce companies, with the world’s most innovative eReading services offering more than 6 million eBooks and audiobooks to 30 million + customers in 190 countries. Kobo delivers the best digital reading experience through creative innovation, award-winning eReaders, and top-ranking mobile apps. Kobo is a part of the Rakuten group of companies.

Rakuten Kobo Inc. is an equal opportunity employer. Accessibility accommodations for candidates with disabilities participating in the selection process are available on request. Any information received related to accommodation needs of applicants will be addressed confidentially.

Rakuten Kobo would like to thank all applicants for their interest in this role however only qualified candidates will be shortlisted.

Beware of fraudulent job offers claiming to be from Rakuten. Rakuten does not send unsolicited job offers or request money during the recruitment process. Learn more: https://rakutenemploymentalert.com/

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Rakuten Kobo Toronto, Ontario, CAN Office

150 John St, 5th Floor, Toronto, Ontario, Canada, M5V 3E3,

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