Full-Stack Engineer (Toronto)

Build something great. Accelerate your career.

Job Description

Reffie is an early-stage startup building the next-generation workflow and data analytics platform for residential real estate owners, operators, and property managers.

Antiquated software causes renting to be a painful experience for everyone involved. Our mission is to streamline rental communications and house families faster.

As one of our first five engineering hires beyond the founding team, you will influence key technical decisions and architect features that have a direct impact on hundreds of thousands of renters.

We are looking for highly driven and creative engineers who enjoy collaborating and working in person with other talented engineers. We are strongly biased towards people with previous start-up experience. You should thrive on shared problem-solving, fast feedback loops, and the kind of technical and creative momentum that only happens when smart people are in a room together.

Why Work for Us?

  • We are a small and passionate team with an expanding Toronto presence. We work in-office several days a week in Toronto. High-bandwidth collaboration and team cohesion matter to us—this is not a remote role.

  • We are backed by top early-stage VCs including Haystack, Trust, and Redbud. 

  • You’ll ship real features, own entire systems, and work across the stack if you choose to.

  • You want to enter on the ground floor of a fast-growing startup, learn a ton, and accelerate your career trajectory.

What You'll Do

  • You will build and improve Reffie’s web platform, working across the stack: data modelling, API design, backend, and frontend. You should have a good grasp of problems that can occur in the client-server model such as caching issues, race conditions, impact on server load, and security considerations.

  • You will shepherd features through the full software development lifecycle: design and architecture, sprint planning, development and issue tracking, code reviews, testing, and monitoring once in production. At the end, you should be able to answer the most important question - are customers using your feature?

  • You will develop clean, maintainable, testable code (because moving quickly means building together).

About You

Required

  • BS/MS in Computer Science or related field.

  • 3+ years in professional software development, with some prior experience working across with AWS and docker.

  • You are experienced with the modern frontend stack: TypeScript, React, CSS3. You are well-versed in responsive design. You are familiar with newer web features such as push notifications and service workers, and their gotchas.

  • You are skilled in API design, data modelling, and working with SQL databases (Postgres preferred).

  • You are knowledgeable about performance profiling, common issues, and how to fix them.

  • You are proficient in monitoring for issues and performance regressions of your deployed code in production.

  • You are comfortable with git and the Linux bash command-line. You understand the basics of CI/CD.

Be prepared to answer technical interview questions and code in all required languages and technologies.

Nice to Have

  • Experience with: Redux/Zustand, React query, CSS modules, at least one CSS framework/library such as MUI/Mantine/Tailwind.

  • Experience with FastAPI and async Python is a plus.

  • Experience with Figma is a plus.

  • Experience reasoning about problems that arise in a distributed system such as race conditions, asynchronous execution, and state synchronization issues.

Consider applying even if you don’t meet all the nice-to-haves. Our ideal candidate is, most importantly, a fast learner.

Hiring Process

screening call (15 mins) → take-home test (est. 3hrs) → review & technical interview → culture fit

Tech Stack

  • Backend is written in Python with a mix of k8s microservices (EKS) and AWS Lambdas. Our infrastructure is hosted on AWS and our DBMS is Postgres.

  • Terraform is used for infrastructure provisioning. Grafana for monitoring.

  • Frontend is a statically built React app written in TypeScript and served using S3 + CloudFront.

Our philosophy in choosing technology is: debugging problems is hard enough without finding problems in core infrastructure. Simple is better.

To Apply

Send an email with your resume to careers [at] reffie [dot] me. Resumes must include:

  • a link to your LinkedIn

  • a link to your GitHub

Your resume should also highlight your level of competence with the required skills where relevant. In the body of the email, please include a link to your favourite XKCD comic to indicate you read the instructions all the way to the end.

Please note: We will not be accepting applicants who are not located in the Toronto area. Work authorization in Canada is required.

Interview Tips

  • Come Prepared. We expect candidates to do some Googling before they hop on a first call.

  • Show Your Passion. We love building things and expect our team members to share that drive. Come to the interview ready to talk about an interesting project, a tool you've tried recently, or some research you've read. If you have an interesting and relevant past project to demo, that's a huge bonus.