Who you are

- Experience: 5+ years in backend systems, with marketplace a nice to have

- Technical Depth: Proficiency in Kotlin, Java, or similar object-oriented languages; comfort with distributed systems, service design, and performance optimization

- Data Fluency: Experience integrating with ML-driven decision systems, experimentation frameworks, or real-time data pipelines

- Collaboration: Strong communication skills and a track record of partnering with cross-functional stakeholders, from DS to PM, to deliver complex systems

- Mindset: Curiosity and a drive to understand complex market dynamics; passion for applying data and algorithms to real-world business problems

- Education: Bachelor’s degree in Computer Science/Engineering or equivalent industry experience

- Technologies We Use and Teach:

- Kotlin, Java, Python

- JUnit, Hibernate, Guice, Jersey

- HTTP, JSON, Protocol Buffers

- MySQL, CockroachDB, Elasticsearch

- AWS

What the job involves

- Faire’s Insider pod, part of the Value Pillar, owns Faire’s membership program — the way we partner with brands to deliver exclusive benefits to retailers so they know they’ll always get the lowest landed cost in wholesale

- Through free shipping, exclusive discounts, and premium benefits, Insider makes Faire the obvious place for our most engaged retailers to start and grow their businesses

- As a Senior Engineer (L4), you’ll own the core services and systems that power the membership: free-shipping coverage, discount targeting and delivery, enrollment and activation funnels, and the membership lifecycle that reinforces value at every touchpoint

- Your work directly shapes what benefits a retailer sees, when they see them, and how much value the program delivers





- Own critical services in our Kotlin-based backend that power our Insider membership program

- Collaborate cross-functionally with Data Science, Product, and Design to prototype, evaluate, and productionize improvements to the Insider user experience.

- Measure and iterate on program performance using experimentation and analytics, growing active Insiders, GMV per Insider, and enrollment rate

- Reinforce Insider value across cart, checkout, discovery, and post-order surfaces so members consistently see and use the savings they’re entitled to

- Mentor engineers and contribute to team best practices in design reviews, performance tuning, and system architecture

Benefits

- Comprehensive healthcare: Including Health, Dental, Vision and Disability for all our locations.

- Time off: Paid time off, holidays and company-wide "Faire Fundays".

- Parental leave: Generous parental and family leave, as well as fertility support perks.

- Productivity support: Monthly stipends to help cover work from home connectivity needs.

- Annual learning grant: For personal and professional development, as well as unlimited access to training courses through LinkedIn Learning.

- Thoughtfully designed spaces: All of our offices have been designed with local in mind – from our architects to our coffee blends.

- Fitness and well-being advantages: Including monthly credit towards your wellness-related programmes.

- Mental health benefits: Including free access to Modern Health therapists and resources.

- Charitable matching: Faire will match up to £250 of your charity donations, every year.

- Career planning: Whether you want to grow as a leader, hone your craft or explore a new discipline, our career framework allows space for you to explore.

📌 Senior Product Engineer (Toronto)
🏢 Faire
📍 Toronto