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Senior Full Stack Engineer - Machine Learning



Software Engineering
Toronto, ON, Canada
Posted on Friday, May 17, 2024

Toast is driven by building the restaurant platform that helps restaurants adapt, take control, and get back to what they do best: building the businesses they love.

We are looking for a Senior Software Engineer to join the AI team. The ideal candidate has a solid track record in the product-oriented development and deployment of machine learning models for end-to-end service. As a senior Full Stack Engineer, you will work with a team of machine learning engineers, data scientists and product managers to build machine learning pipelines and deploy models for product lines.

About this roll* (Responsibilities)

  • Work with a team of machine learning engineers and data scientists to develop robust machine learning model pipelines, architect and implement APIs, and create microservices focused on optimizing latency, availability, and overall performance.
  • Engage with technology partners to build, prototype and validate scalable tools/applications end to end (frontend, backend, data).
  • Implement best practices for version control, code review, testing, and documentation, fostering a culture of high-quality software development
  • Stay current with the latest tools, technologies, and best practices in machine learning engineering and cloud-based infrastructure, and drive continuous improvement within the team
  • Monitor, troubleshoot, and optimize the performance of machine learning models and related infrastructure
  • Embrace agile development methodologies, uphold best practices, and seize ongoing learning opportunities.
  • Engage in collaborative efforts with cross-functional teams, including product managers and engineers, to ensure the delivery of superior quality products.

Do you have the right ingredients*? (Requirements)

  • Bachelor's degree in Computer Science, a related technical discipline, or equivalent hands-on experience.
  • A minimum of 4 years of industrial experience in software development.
  • Proficiency in Java programming language and knowledge of front-end technologies like HTML, CSS, JavaScript, TypeScript, and frameworks like React or Angular, familiarity with back-end frameworks like Spring or Java EE, experience with databases and SQL, understanding of web services and APIs, and familiarity with cloud platforms and DevOps practices.
  • Experience with Java/Kotlin and Python
  • Experience with microservice based architecture, preferably with AWS tooling (SageMaker, DynamoDB, Athena, Glue, etc.)
  • Experience in software engineering best practices and tools including object-oriented programming, test-driven development, CI/CD, git, shell scripting, task orchestration
  • Profound knowledge of model deployment, orchestration (Apache airflow), scaling, and managing CPU/GPU resources efficiently.
  • Exceptional problem-solving, analytical skills and the ability to tackle complex problems with a critical thinking approach.
  • Outstanding communication and interpersonal skills, coupled with a demonstrated ability to work collaboratively within a team environment.

Bonus ingredients*:

  • Foundational knowledge in statistical concepts (e.g. classification, regression, etc) and deep learning algorithms (e.g. CNN, RNN) is desirable
  • Experience with generative AI from concept to production.
  • Experience in data engineering and programming frameworks such as Spark and Ray is a strong plus.

Our Spread* of Total Rewards
We strive to provide competitive compensation and benefits programs that help to attract, retain, and motivate the best and brightest people in our industry. Our total rewards package goes beyond great earnings potential and provides the means to a healthy lifestyle with the flexibility to meet Toasters’ changing needs. Learn more about our benefits at

*Bread puns encouraged but not required

The base salary range for this role is listed below. The starting salary will be determined based on skills and experience. In addition to base salary, our total rewards components include cash compensation (overtime, bonus/commissions if eligible), equity, and benefits.
Pay Range
$108,000$173,000 CAD

We are Toasters

Diversity, Equity, and Inclusion is Baked into our Recipe for Success.

At Toast our employees are our secret ingredient. When they are powered to succeed, Toast succeeds.

The restaurant industry is one of the most diverse industries. We embrace and are excited by this diversity, believing that only through authenticity, inclusivity, high standards of respect and trust, and leading with humility will we be able to achieve our goals.

Baking inclusive principles into our company and diversity into our design provides equitable opportunities for all and enhances our ability to be first in class in all aspects of our industry.

Bready* to make a change? Apply today!

Toast is committed to creating an accessible and inclusive hiring process. As part of this commitment, we strive to provide reasonable accommodations for persons with disabilities to enable them to access the hiring process. If you need an accommodation to access the job application or interview process, please contact