ZipRecruiter

Log In

1

Contract Backend Developer Jobs in Ontario (NOW HIRING)

Crowdlinker

... on a remote, contract, hourly basis). E ST candidates or ability to work EST hours preferred ... Proficient knowledge of backend programming languages like Node.js * Proficient in using front-end ...

Royal Bank of Canada

Staff AI Engineer

Toronto, ON

... contracts, backend, AI logic, and the executive-facing interface, with no expectation of a ... Programming Languages, Software Development, Software Development Life Cycle (SDLC), System ...

StackandCo

\n \n \n \n \n We have a requirement for a C# Developer to join our client in Dublin City Centre on a 6\-month contract with the possibility of extension. \n \n \n \n \n \n The role is Back\-End and ...

StackandCo

... a 3\-6 month contract. \n \n \n \n \n \n The contract will be initially 3 months with the ... Some backend (ideally .Net) is desirable but not essential \n * Strong communication skills \n \n ...

Rivalry

Engineering / Product Seniority: Senior / Staff TL/DR: We are on the hunt for a seasoned Software ... A solid history of success with Automation Testing (Unit, Contract, Integration, etc.) and Test ...

Capco

Developer with Prompt Engineering

Toronto, ON · On-site +1

... contract basis. This is an existing vacancy supporting the delivery of innovative technology ... Design, develop, and maintain scalable backend applications using Python and modern software ...

StackandCo

... rolling contract. \n \n \n \n \n \n Requirements \n \n \n * 2 years experience in PHP \n ... Minimum one year as a "PHP Developer" OR "Full Stack Developer" with PHP on the backend \n

Pro Mach

Senior Software Engineer

Oakville, ON · Hybrid

Keep reading. ZPI, the developer of the industry leading Zarpac Performance Index (ZPI ... Design edge ↔ cloud contracts that align with our current backend model * Handle realworld ...

previous pagenext page

Showing results 21-40

All JobsContract Backend Developer JobsContract Backend Developer Jobs in Ontario

Contract Backend Developer information

What are the key skills and qualifications needed to thrive as a contract backend developer, and why are they important?

To thrive as a Contract Backend Developer, you need strong programming skills in languages like Python, Java, or Node.js, along with experience in database management and API development, supported by a relevant degree or proven project experience. Familiarity with frameworks (such as Django, Spring, or Express), cloud services (like AWS or Azure), and version control systems (e.g., Git) is typically expected. Excellent problem-solving abilities, strong communication, and the ability to quickly adapt to new codebases and team environments set top contractors apart. These skills and qualities are crucial for delivering reliable, scalable backend solutions and integrating smoothly into diverse project teams.

What are some common challenges faced by contract backend developers when joining a new project?

Contract Backend Developers often encounter challenges such as quickly understanding existing codebases, adapting to different tech stacks, and aligning with the team's development practices. Since contract roles usually have tight deadlines, developers must rapidly familiarize themselves with project documentation and workflows. Effective communication with team members and proactive clarification of requirements are essential to ensure smooth integration and successful project outcomes.

What is a contract backend developer?

Contract backend developers are professionals hired on a temporary or project basis to build and maintain the server-side logic, databases, and APIs that power web or mobile applications. They work behind the scenes to ensure that applications function smoothly, handle data efficiently, and communicate effectively with front-end systems. Unlike full-time employees, contract backend developers typically work for a set duration or on specific projects, offering flexibility to both clients and developers. They often bring specialized expertise in programming languages such as Python, Java, Node.js, or Ruby, and may work remotely or on-site depending on the contract terms.
What are the most commonly searched types of Backend Developer jobs in Ontario? The most popular types of Backend Developer jobs in Ontario are:
What job categories do people searching Contract Backend Developer jobs in Ontario look for? The top searched job categories for Contract Backend Developer jobs in Ontario are:
What cities in Ontario are hiring for Contract Backend Developer jobs? Cities in Ontario with the most Contract Backend Developer job openings:
Contract Backend Developer jobs near you
Infographic showing various Contract Backend Developer job openings in Ontario as of August 2026, with employment types broken down into 55% Full Time, and 45% Contract. Highlights an 100% In-person job distribution.

Software Engineer, Backend - Unified Gateway

DoorDash Canada

Toronto, ON • On-site

Full-time

Re-posted yesterday

Job description

About the Team

Help us build the world's most reliable, on-demand logistics engine for last-mile delivery! We're bringing on experienced engineers to help us create and maintain a 24x7, no downtime, global infrastructure system that powers DoorDash's three-sided marketplace of consumers, merchants, and dashers.

About the Role

As a member of the Unified Gateway team, you'll build and maintain the API Gateway platform that sits at the front door of DoorDash's traffic - an HTTP-to-gRPC reverse proxy that accepts REST/JSON requests, translates them into Protocol Buffer messages, calls downstream gRPC services, and translates the responses back to clients. The platform empowers product engineers to declaratively define, test, deploy, and operate their API endpoints without standing up and managing their own edge services. It centrally handles authentication, authorization, request and response mapping, header propagation, encryption, and resilience, and powers experiences across DoorDash, Wolt, and Deliveroo spanning iOS, Android, and Web. By providing this robust platform, we deliver significant improvements in:

  • Velocity: Product engineers can iterate faster and deliver features more quickly.
  • Scalability: The platform is designed to handle increasing demand and traffic seamlessly.
  • Reliability: A safe programming model, centralized management, and standardized practices enhance system stability and reduce errors.
  • Cost Efficiency: Consolidating resources and streamlining processes optimizes operational costs across DoorDash.
You're excited about this opportunity because you will...
  • Design and build robust, scalable systems with engineering excellence and long-term maintainability in mind.
  • Improve performance, reliability, scalability, and security across the gateway and its request-processing pipeline.
  • Drive best practices in API management, service discovery, load balancing, and fault tolerance.
  • Champion adoption of the Unified Gateway platform across product teams.
  • Troubleshoot and resolve complex issues in our high-throughput production environment.
  • Evaluate and integrate new technologies to enhance the platform's capabilities.
  • Leverage the latest AI-assisted development tools and best practices.
We're excited about you because...
  • You have 2+ years of experience in backend, infrastructure, or platform engineering.
  • You have experience with gRPC, REST APIs, Protocol Buffers, and service-to-service communication patterns.
  • You have deep knowledge of best practices in Kotlin (or another JVM language) for building high-scale, resilient systems; familiarity with asynchronous/reactive frameworks such as Vert.x is a plus.
  • You have experience working on high-throughput, mission-critical production systems.
  • You have a strong understanding of distributed systems concepts, including consistency, fault tolerance, load balancing, and resilience patterns.
  • You are comfortable with API gateway and proxy concerns - authentication and authorization, request routing, and schema/contract management (e.g., OpenAPI).
  • You value solving problems at the platform level, building abstractions that make life easier for hundreds of engineers.
  • You have 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

Apply