Senior Software Engineering, Backend (All Teams)

DoorDash Canada; Toronto; Hybrid; CAD 130,000 - 170,000; Full time

Job summary

DoorDash is seeking a Senior Backend Engineer to own end-to-end backend services and shape architecture across product and product platform teams. You will drive performance, security and reliability while collaborating cross-functionally and mentoring peers.

This role is hybrid with some in-office time and reports to an Engineering Manager. You will modernize a monolithic codebase to microservices, define RESTful interfaces, and work with SQL/NoSQL databases (PostgreSQL, Redis, Elasticsearch,

Qualifications

• 5+ years of industry experience.
• Backend engineering experience across product and platform.
• Proficiency with REST APIs and service-oriented architecture.
• Experience with SQL and NoSQL databases (PostgreSQL, Redis, Elasticsearch, RabbitMQ).
• Familiarity with AI coding tools (Claude Code, Codex, Cursor) in the software lifecycle.

Responsibilities

• Develop, release and run large-scale web applications.
• Define backend architecture and tech stack for a product area.
• Improve performance, reliability, scalability and security of backend systems.
• Transition monolithic codebase to a microservice-based architecture.
• Tackle bleeding-edge technical problems to disrupt logistics.

Skills

Backend development

System design

REST APIs

Performance optimization

AI coding tools

Education

B.S./M.S./PhD in CS or equivalent

Tools

PostgreSQL

Redis

Elasticsearch

RabbitMQ

Job description

Senior Software Engineering, Backend (All Teams)

About the Role

We’re looking for Senior Backend Engineers to work on both Product and Product Platform based teams. Product focused Engineers work at the intersection of product and infrastructure to solve key business problems with elegant technical solutions. You'll operate our backend services and architecture that support all product functionality and will be challenged to consider the big picture -- collaborating cross-functionally, as well as evaluating and executing on trade-offs to maximize business impact for the company. We expect Senior Engineers to be able to own projects end-to-end and mentor their junior and mid level peers. This role is hybrid with some in-office time expected and will report to an Engineering Manager.

You’re excited about this opportunity because you will...

• Develop, release and run large-scale web applications
• Develop and define the backend architecture and tech stack for a product area
• Improve performance, reliability, scalability and security for our backend systems
• Be involved in transitioning our monolithic codebase to a microservice-based architecture
• Completely disrupt logistics by tackling bleeding-edge, technical problems

We’re excited about you because you have...

• B.S., M.S., or PhD. in Computer Science or equivalent
• 5+ years of industry experience
• Prior experience working with backend tech stacks
• Proficiency in using AI coding tools (e.g., Claude Code, Codex, Cursor) in the full software development lifecycle, including designing, generating code, testing, monitoring and releasing software
• Ability to analyze and improve efficiency, scalability, and stability of various system resources
• Experience with service oriented architecture, writing REST API’s, unit testing, and architectural design
• Understanding of modern web stacks and architecture (HTTP, REST)
• Experience with SQL and NoSQL databases and other technologies (e.g. Postgres, Redis, Elasticsearch, RabbitMQ)

About DoorDash

At DoorDash, our mission to empower local economies shapes how our team members move quickly, learn, and reiterate in order to make impactful decisions that display empathy for our range of users—from Dashers to merchant partners to consumers. We are a technology and logistics company that started by enabling door-to-door delivery, and we are looking for team members who can help us go from a company that is known as the place you order food to a company that people turn to for any and all goods.

DoorDash is growing rapidly and changing constantly, which gives our team members the opportunity to share their unique perspectives, solve new challenges, and own their careers. We're committed to supporting employees’ happiness, healthiness, and overall well-being by providing comprehensive benefits and perks including premium healthcare, wellness expense reimbursement, paid parental leave and more.

Our Commitment to Diversity and Inclusion

We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.

If you need any accommodations, please inform your recruiting contact upon initial connection.