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Senior Backend Developer Jobs in Ontario (NOW HIRING)

Sangoma

Senior Backend Developer

Ottawa, ON · Remote

CA$120K - CA$135K/yr

Own it. Sangoma is excited to announce an opening for a Senior Backend Developer to join our talented team. As a recognized leader in business communications solutions, we strive to provide ...

Sangoma

Senior Backend Developer

Toronto, ON · Remote

CA$120K - CA$135K/yr

Own it. Sangoma is excited to announce an opening for a Senior Backend Developer to join our talented team. As a recognized leader in business communications solutions, we strive to provide ...

Cognitive Systems

Senior Backend Developer

Waterloo, ON · On-site

Senior Backend Developer (Cloud & APIs) ABOUT YOU You're a strong backend developer who enjoys building reliable cloud services and APIs. You like shipping in a fast-paced environment, collaborating ...

Rumble

Senior Back-End Developer

Toronto, ON

CA$135K - CA$154K/yr

The Senior Back-End Developer is responsible for designing, building, and maintaining high-performance server-side systems that power a large-scale video platform serving millions of users. This role ...

ShyftLabs

Senior Backend Developer

Toronto, ON · Hybrid

CA$100K - CA$140K/yr

The Opportunity ShyftLabs is looking for a Senior Developer to help design, build, and scale our ... The ideal candidate combines strong backend and frontend engineering skills with experience in ...

Hays

CA$80 - CA$90/hr

Your New Role We are hiring two Senior Agentic AI Developers to join a high‑impact engineering team. In this role, you will design, build, and scale backend systems that power AI‑driven agents ...

Baselane

Senior Back-End Developer (Toronto)

Toronto, ON · On-site

CA$150K - CA$180K/yr

About the Role You will be responsible for developing and maintaining our Backend services. You will code with other developers in expanding our product offering using Node and GraphQL, deployed on ...

Worthland

Senior Backend Engineer (Web3)

Toronto, ON · On-site

CA$300K - CA$450K/yr

Role Overview We are seeking a Senior Backend Engineer (Web3) with strong expertise in Go and ... Collaborative, developer-focused work environment in a downtown office . * Inclusive and dynamic ...

Worthland

Senior Backend Engineer (Web3)

Toronto, ON

CA$300K - CA$450K/yr

Role Overview We are seeking a Senior Backend Engineer (Web3) with strong expertise in Go and ... Collaborative, developer-focused work environment in a downtown office . * Inclusive and dynamic ...

Chubb

Senior Backend Engineer

Toronto, ON

The Senior Backend Engineer, AI Platform owns the backend surface. You are the primary engineer on the NestJS middleware layer and a meaningful contributor to the Python services. You ship production ...

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Senior Backend Developer information

See Ontario salary details

$60K

$129.4K

$175.5K

How much do senior backend developer jobs pay per year?

As of May 28, 2026, the average yearly pay for senior backend developer in Ontario is $129,369.00, according to ZipRecruiter salary data. Most workers in this role earn between $108,500.00 and $147,500.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior Backend Developer, and why are they important?

To thrive as a Senior Backend Developer, you need advanced proficiency in server-side programming languages (such as Java, Python, or Node.js), deep understanding of API design, and experience with database management, often supported by a degree in computer science or related field. Familiarity with version control systems (like Git), cloud platforms (such as AWS or Azure), and relevant certifications in backend technologies are commonly required. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with cross-functional teams and mentor junior developers. These competencies ensure robust, scalable backend systems and drive successful project delivery in complex technical environments.

What are common challenges Senior Backend Developers face when leading complex projects, and how can they address them?

Senior Backend Developers often encounter challenges such as integrating legacy systems with new technologies, ensuring scalability under increased load, and coordinating cross-functional teams for seamless feature delivery. Addressing these challenges typically involves proactive architectural planning, clear communication with frontend and DevOps teams, and adopting best practices like code reviews and automated testing. Staying updated on emerging technologies and fostering a culture of knowledge sharing within the team also help in overcoming technical obstacles and driving successful project outcomes.

What does a Senior Backend Developer do?

A Senior Backend Developer is responsible for designing, building, and maintaining the server-side logic of web applications. They work with databases, APIs, and server infrastructure to ensure that applications run smoothly, securely, and efficiently. In addition to writing robust code, they often mentor junior developers, contribute to architectural decisions, and collaborate with frontend teams to deliver seamless user experiences. Their expertise is crucial for scaling applications and implementing best practices in software development.

What is the difference between Senior Backend Developer vs Backend Developer?

AspectSenior Backend DeveloperBackend Developer
Required Experience5+ years, leadership skills1-3 years, foundational skills
ResponsibilitiesDesign architecture, mentor juniors, optimize systemsImplement features, fix bugs, write code
Skills & CertificationsAdvanced coding, system design, relevant certificationsBasic coding, database knowledge
Work EnvironmentCollaborates with cross-functional teams, often in larger projectsFocuses on individual tasks within projects

The main difference between a Senior Backend Developer and a Backend Developer lies in experience, responsibilities, and leadership. Senior Backend Developers typically have more years of experience, take on complex system design, and mentor junior staff, whereas Backend Developers focus on implementing features and fixing bugs. Both roles are essential in backend development teams, but the senior role involves more strategic and leadership duties.

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 are popular job titles related to Senior Backend Developer jobs in Ontario? For Senior Backend Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Senior Backend Developer jobs in Ontario look for? The top searched job categories for Senior Backend Developer jobs in Ontario are:
What cities in Ontario are hiring for Senior Backend Developer jobs? Cities in Ontario with the most Senior Backend Developer job openings:
Senior Backend Developer jobs near you

Senior Back-End Developer

Rumble - Career Page

Toronto, ON

CA$135K - CA$154K/yr

Other

Posted 10 days ago

Job description

The Senior Back-End Developer is responsible for designing, building, and maintaining high-performance
server-side systems that power a large-scale video platform serving millions of users. This role
encompasses architecture and optimization of backend services, database design, caching strategies,
and API development. You will also be responsible for integrating front-end elements built by your
coworkers into the application, so a solid understanding of front-end technologies is necessary.
Duties/Responsibilities:

  • A
    • rchitect and implement scalable backend systems and features for a high-traffic video platform
  • D
    • esign and optimize MySQL database schemas for performance at scale
  • I
    • mplement and maintain caching strategies using Memcached and Redis
  • B
    • uild and maintain APIs that serve client-facing applications
  • I
    • ntegrate user-facing elements developed by front-end developers with server-side logic
  • I
    • dentify performance bottlenecks and implement optimizations for maximum speed and scalability
  • D
    • evelop and maintain background tasks and data pipelines handling very large datasets
  • C
    • onduct code reviews and drive technical decisions on system design and architecture
  • M
    • aintain, refactor, and modernize legacy codebases
  • B
    • uild reusable libraries and establish patterns for future development
  • O
    • ther duties, as assigned
    Requirements:
  • 8
    • years of experience as a back-end developer
  • 1
    • 0 years of experience with object-oriented programming languages
  • 5
    • years of experience with PHP specifically, including PHP 8+
  • S
    • trong experience with MySQL, including query optimization, indexing strategies, and schema design
  • E
    • xperience with caching layers (Memcached, Redis)
  • P
    • roven ability to build and optimize systems operating at high scale and throughput
  • I
    • n-depth understanding of web development and HTTP protocols
  • E
    • xperience with Linux server environments, including navigating consoles, reading logs, and
      troubleshooting production issues
  • E
    • xperience and/or knowledge with front-end languages such as JS/TypeScript, HTML, CSS
  • W
    • illingness to jump in on any project, when needed, regardless of code quality
    Preferred Qualifications:
  • K
    • nowledge of video technologies, containers, codecs, and live streaming
  • E
    • xperience with NGINX configuration and optimization
  • E
    • xperience with WebSocket for real-time communication
  • E
    • xperience in BASH scripting and automation
  • U
    • nderstanding of networking fundamentals
  • F
    • amiliarity with static analysis tools (e.g., PHPStan) and modern PHP coding standards
    Desired Qualifications:
  • D
    • egree in Computer Science/Engineering or related field
  • E
    • xperience migrating or modernizing legacy PHP codebases
  • E
    • xperience with server-side rendering architectures
  • E
    • xperience with CI/CD pipelines and automated testing (PHPUnit)

    Annual Compensation Range: 

    $135,000 - $154,000 CAD base + benefits + equity 

    Note: The salary range listed for this position is a good faith estimate based on experience, qualifications, and internal compensation structure. The actual salary offered varies depending on the candidate's skill level and experience. This posting refers to an active vacancy within the organization.

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