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Junior Back End Developer Jobs in Toronto, ON (NOW HIRING)

United Airlines

Java Back end Developer

Toronto, ON · On-site

Architect and build scalable backend services and modern frontend applications. * Champion AI/LLM ... Lead code reviews, establish engineering standards, and mentor junior engineers. * Participate in ...

Private AI

Junior Developer

Toronto, ON

You'll be supported by an experienced team of backend engineers, and this role is designed to help ... As a junior developer, you'll get exposure to the full lifecycle of a production service, from API ...

Private AI

Junior Developer

Toronto, ON · On-site

You'll be supported by an experienced team of backend engineers, and this role is designed to help ... As a junior developer, you'll get exposure to the full lifecycle of a production service, from API ...

New

NimbleRx

Senior Backend Engineer

Toronto, ON · On-site

Mentor junior engineers and interns * Promote best practices and high-quality development ... with backend APIs, services, and platform development * Rich development experience with Java ...

Scotiabank

Senior Web Developer

Toronto, ON · On-site +1

Work closely with backend, DevOps, and cloud platform teams to support endtoend delivery ... Provide technical mentorship and guidance to intermediate and junior developers. * Support ...

Magna

Junior Full Stack Developer Coop

Milton, ON

The [Junior Full Stack Developer - coop] role is to help plan, design, develop, test, launch, and ... Design and develop front-end & back-end components/services for new and existing applications.

Scotiabank

Junior Software engineer

Toronto, ON

ReactJS * Backend/API Layer: Node.js * BaaS Layer: Java What You'll Do: * Develop and maintain ... CI/CD practices and DevOps concepts Beyond technical skills, we value individuals who: * Take ...

Virtusa

Fullstack Developer

Toronto, ON · On-site

... role bridges frontend development with backend integration and cloud deployment ensuring ... also mentoring junior developers and contributing to technical decisionmaking.

Virtusa

Senior Java Developer

Mississauga, ON

The ideal candidate will have deep expertise in Java and modern backend / frontend technologies, a strong understanding of system design, and the ability to mentor junior engineers while ...

Virtusa

Senior Java Developer

Mississauga, ON · On-site

The ideal candidate will have deep expertise in Java and modern backend / frontend technologies, a strong understanding of system design, and the ability to mentor junior engineers while ...

Virtusa

Senior Java Developer

Mississauga, ON

The ideal candidate will have deep expertise in Java and modern backend / frontend technologies, a strong understanding of system design, and the ability to mentor junior engineers while ...

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Junior Back End Developer information

What is a junior back end developer?

A Junior Back End Developer is an entry-level software developer responsible for building and maintaining the server-side logic, databases, and APIs of web applications. They work with programming languages like Python, Java, or Node.js and collaborate with front-end developers to ensure seamless integration. Their tasks often include writing code, debugging issues, optimizing performance, and managing databases. Juniors typically work under the guidance of senior developers to improve their skills and gain experience in back-end development.

What are some common challenges faced by junior back end developers in their first role?

Junior Back End Developers often find themselves adjusting to complex codebases and learning how to troubleshoot issues within existing systems. Navigating unfamiliar frameworks, understanding best practices for security and performance, and collaborating effectively with front-end developers and other team members can also be initial challenges. Many juniors spend time improving code review skills and learning to communicate technical issues clearly. Embracing these learning opportunities and seeking mentorship will help you grow quickly and build confidence in your new role.

What are the key skills and qualifications needed to thrive in the junior back end developer position, and why are they important?

To thrive as a Junior Back End Developer, you need a solid understanding of server-side programming languages (such as Java, Python, or Node.js), basic database management, and problem-solving abilities, often supported by a degree in computer science or a related field. Familiarity with frameworks (e.g., Express, Django), version control systems like Git, and exposure to cloud platforms or RESTful APIs are commonly expected. Strong communication skills, a willingness to learn, and an aptitude for teamwork make candidates stand out in this collaborative environment. These skills are crucial for building robust applications, maintaining efficient workflows, and integrating seamlessly with cross-functional teams.

What are the most commonly searched types of Back End Developer jobs in Toronto, ON?

The most popular types of Back End Developer jobs in Toronto, ON are:

What are popular job titles related to Junior Back End Developer jobs in Toronto, ON?

For Junior Back End Developer jobs in Toronto, ON, the most frequently searched job titles are:

What job categories do people searching Junior Back End Developer jobs in Toronto, ON look for?

The top searched job categories for Junior Back End Developer jobs in Toronto, ON are:

What cities near Toronto, ON are hiring for Junior Back End Developer jobs?

Cities near Toronto, ON with the most Junior Back End Developer job openings:

Junior Back End Developer jobs near you
Infographic showing various Junior Back End Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 80% Full Time, and 20% Contract. Highlights an 20% In-person, 20% Hybrid, and 60% Remote job distribution.

Sr .NET Back End Developer

Pacific Programming and Tech Inc

Toronto, ON • Hybrid

Full-time

Medical, PTO

Re-posted 26 days ago

Job description

We are looking for a highly skilled Senior .NET Backend Developer to join our backend team. In this role, you will be responsible for designing, developing, and maintaining robust and scalable backend systems using .NET technologies. The ideal candidate has a deep understanding of software architecture, clean coding practices, and experience building high-performance APIs and event-driven services.


Key Responsibilities

  • Design, develop, and maintain backend services using .NET and C#
  • Apply Clean Architecture principles to ensure maintainable and scalable codebases
  • Implement and consume RESTful APIs
  • Work with Entity Framework (EF) for data persistence and complex data modeling
  • Design and build event-driven systems using messaging technologies like RabbitMQ
  • Apply strong software architecture principles to guide system design and service interactions
  • Write unit tests and contribute to overall test automation practices
  • Integrate and manage distributed caching mechanisms (e.g., Redis, NCache) to improve performance
  • Develop efficient SQL queries and work closely with SQL Server
  • Collaborate with cross-functional teams, including frontend, DevOps, and QA
  • Participate in code reviews, architecture discussions, and mentoring junior developers


Required Skills and Qualifications

  • 5+ years of experience in backend development using .NET / .NET Core
  • Strong experience with Entity Framework (EF)
  • Solid understanding of event-driven architecture and experience with RabbitMQ (or similar)
  • Hands-on experience applying Clean Architecture and SOLID principles
  • Strong grasp of general software architecture concepts (e.g., layered architecture, DDD)
  • Proficiency in unit testing frameworks (e.g., xUnit, NUnit, Moq)
  • Familiarity with distributed caching systems such as Redis or NCache
  • Experience building and consuming RESTful APIs
  • Strong skills in SQL Server development and optimization
  • Experience working with version control systems like Git


Nice to Have / Preferred

  • Experience with Elasticsearch and integrating it into .NET applications
  • Experience with microservices architecture
  • Familiarity with CI/CD pipelines and DevOps practices
  • Knowledge of containerization tools like Docker
  • Experience with cloud platforms (e.g., Azure)


What We Offer

  • Competitive salary based on your level of experience.
  • A benefits package that includes an extensive health insurance package, as well annual vacation, sick and personal days.
  • A remote-hybrid work environment and flexible work arrangements to promote work-life balance.
  • A collaborative and supportive work culture.
  • Opportunities for professional growth and development.

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