Senior Developer

Get AI-powered advice on this job and more exclusive features. Who We Are At ZayZoon, we are on a mission to save 10 million hardworking employees $10 billion dollars. We’ve created a financial empowerment platform that helps businesses of all sizes make a big impact on employee financial wellness. We offer a variety of financial wellness services, such as earned wage access, that allow employees to access their earned wages ahead of payday. With 74% of our customers reporting reduced financial stress, we know our solutions help lead to happier and more productive employees. ZayZoon was recognized for its growth in the 2025 Deloitte Technology Fast 50 and top‑10 growth companies in Canada by the CIX awards. Our recent funding round raised Series B to nearly $50 million USD. About The Role We are looking for a Senior Developer experienced with Ruby on Rails to help us solve tough problems and think up innovative new solutions. You will work on customer‑ and admin‑facing products, third‑party integrations—both canned and bespoke—and help architect the system toward greater flexibility, reliability, and scale. Responsibilities Creative problem solving for key development and engineering issues, including full understanding of the root cause with the ability to leverage data to back up assertions Building, maintaining, and architecting core web and mobile applications Integrating with and maintaining third‑party tools and services Participating in our agile development process: sprint planning, story grooming and stand‑ups Extensive collaboration with other departments, particularly Product, Customer Care, and Finance, on product issues and when implementing new features Adherence to our SDLC and secure coding practices and environment Collaboration with development pod and team via pull request reviews, mentorship, knowledge sharing, pairing on complex stories Championing ZayZoon’s mission to provide responsible financial products to an underserved generation of employees You Bring 4+ years of hands‑on Ruby on Rails work experience with production applications Experience solving issues around scale, concurrency, queuing, background processing, and efficient ingestion of third‑party data Mastery of fundamentals: SOLID coding principles, domain‑driven design, performant code and queries, unit and integration testing Ability to build quickly when we need to experiment, and to build clean when MVP becomes core functionality Strong SQL and data analysis skills and an eagerness to dig into data as part of problem solving Full stack mentality: every developer owns their features in full, meaning all the way from back end to front end code, automated and real‑life testing, demos, and delivery Experience with agile development, sprints and scrum All the usual tooling: Git, GitHub, JIRA, editor of your choice Bonus Points If You Have Data experience with BI tools (Metabase, Looker), ETL Competence with React or React Native Experience or interest in DevOps, particularly around cloud services and AWS Prior work with financial technology, accounting systems, or banking Why You’ll Love Working At ZayZoon Permanently Remote: Work from a desk, a coffee shop, or in the great outdoors—our jobs are fully remote, forever Flexible Time Off: You can take longer vacations to explore new horizons, short breaks for regular rejuvenation, or stepping away for a new level of mastery—our “You‑do‑You” time off program offers up to 6 weeks vacation Instant Benefits: All full‑time employees get access to medical, vision, and dental benefits from their very first day, including increased mental health coverage and a wellness stipend Inclusive parental leave top‑up, earned wage access, real‑time market data for salaries, a supportive culture for lifelong learners and more What You Can Expect From Us Every application will be reviewed by our team—we’re committed to giving each application the attention it deserves because we know how important this step is for you. We want to make sure you’re always in the loop and will respond to every application. So go ahead and hit that apply button with confidence, knowing that we’re here for you every step of the way We can’t wait to hear from you. Get notified about new Senior Developer jobs in Toronto, Ontario, Canada. #J-18808-Ljbffr