We're a fast-growing technology company building consumer products at the intersection of sports, entertainment, and digital experiences. Our team combines strong technical execution with a practical, entrepreneurial approach to launching and scaling new products. We move quickly, give talented people meaningful responsibility, and focus on building experiences customers genuinely enjoy using.

We're building a new transaction-driven consumer platform and are looking for a hands-on Full-Stack Engineer to join our technical team.

You'll work under our engineering leadership to build, integrate, test, and maintain the systems behind a polished consumer experience. The platform will combine our own technology with specialized third-party services, so much of the work will involve building reliable integrations and ensuring information and transactions move accurately between systems.

This role is ideal for an engineer who is comfortable moving between backend services, relational databases, external APIs, and React-based frontend experiences.

What you'll work on:

Develop backend services using TypeScript, Node.js, Express, and PostgreSQL

Build responsive consumer-facing experiences using React, TypeScript, Vite, Tailwind, and Radix

Design and maintain relational data models, schemas, and database migrations

Build secure REST APIs connecting the frontend, backend, and external platforms

Integrate third-party APIs, SDKs, payment providers, identity services, and webhooks

Implement customer account, authentication, balance, transaction, deposit, and withdrawal functionality





Build reliable handling for retries, timeouts, duplicate events, out-of-order events, and provider outages

Use database transactions, locking, isolation levels, and idempotency to protect data integrity

Support transaction states involving successful and failed payments, refunds, adjustments, disputes, and withdrawals

Develop internal tools supporting customer service, finance, risk, and operations

Write automated tests for important product and transaction workflows

Investigate production issues and work directly with external providers to resolve integration problems

Contribute to deployment workflows, monitoring, documentation, and general platform reliability

Communicate technical work and implementation considerations clearly to both engineers and non-engineers

Our current Stack:

TypeScript

Node.js 22

Express

Frontend

React 18

TypeScript

Vite

Tailwind CSS

Radix UI

React Router

Supabase

Infrastructure and Supporting Technologies

Netlify Functions

Docker

GitHub Actions

Python

FastAPI

You do not need experience with every technology listed,



but you should be highly proficient in TypeScript and comfortable working across both backend services and React applications.

What we're looking for

Approximately 3-5 years of qualified software engineering experience

Production experience using TypeScript across backend services and React frontends

Strong SQL skills and a practical understanding of relational data modelling

Experience working with database transactions, isolation levels, locking, and migrations

Experience designing, building, and maintaining REST APIs

Experience integrating third-party APIs and webhooks in production

An understanding of asynchronous integration failure modes, including retries, timeouts, duplicate events, delayed events, and out-of-order delivery

Experience designing idempotent operations and protecting data consistency

Experience writing automated tests for backend and frontend functionality

The ability to debug issues across applications, databases, APIs, and external providers

Clear written communication, particularly when explaining technical work to non-engineering stakeholders

Comfort working in a fast-moving environment where priorities and implementation details may evolve

Helpful

Experience in any of the following areas would be valuable:

Payments, payouts, wallets, or stored balances

Betting, gaming, or other transaction-heavy consumer products

Financial or operational reconciliation

KYC and identity-verification integrations

Chargebacks, disputes, refunds, and payment-risk workflows

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📌 Full Stack Engineer (Ontario)
🏢 SharpStakes
📍 Ontario