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Junior Mern Stack Developer Jobs in Toronto, ON (NOW HIRING)

Scotiabank

Junior Developer

Toronto, ON · On-site

Build backend APIs using Spring Boot stack. (Backend) * Write clean, maintainable, and well documented with minimal guidance. * Help document software features and perform reviews with team members.

Propel Holdings

Sr. Software Developer

Toronto, ON · On-site

CA$110K - CA$135K/yr

... full stack developer (Java+ React/Angular) or any similar role * Exposure to web security ... Hands-on experience in leading/mentoring junior developers * Experience with Spring Boot ...

Sync.com

Software Developer

Toronto, ON · On-site

Key Responsibilities * Design, develop, and deploy full stack applications using Node.js, ... Experience mentoring junior developers or interns. Perks: * Generous wellness program * Best-in-the ...

JLL

Staff Software Developer

Toronto, ON · On-site

... junior engineers. You'll design and build scalable geospatial solutions leveraging the ArcGIS stack, set up end-to-end DevSecOps processes, and take leadership roles in large projects. Working ...

Ci

Senior TypeScript Developer

Toronto, ON · On-site

CA$100K - CA$150K/yr

In this role, you'll design and build scalable applications, mentor junior developers, and contribute to architectural decisions that shape our technology stack. Key Responsibilities * Design ...

Citi

Apps Dev Tech Lead Analyst

Mississauga, ON · On-site

CA$120K - CA$170K/yr

The GSP technology team has an opening for a Lead Full Stack Developer in our Toronto office. The ... Serve as advisor or coach to more junior developers. Operate with a limited level of direct ...

Virtusa

Fullstack Developer

Toronto, ON · On-site

... junior developers and contributing to technical decisionmaking. ResponsibilityCollaborate with business stakeholders and product owners to translate requirements into technical solutions Design and ...

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Showing results 21-40

All JobsMern Stack Developer JobsJunior Mern Stack Developer JobsJunior Mern Stack Developer Jobs in Toronto, ON

Junior Mern Stack Developer information

See Toronto, ON salary details

$34.4K

$118.6K

$170.8K

How much do junior mern stack developer jobs pay per year?

As of Sep 1, 2026, the average yearly pay for junior mern stack developer in Toronto, ON is $118,593.00, according to ZipRecruiter salary data. Most workers in this role earn between $95,911.00 and $141,242.00 per year, depending on experience, location, and employer.

What is a junior MERN Stack Developer?

A Junior MERN Stack Developer is an entry-level software developer who specializes in building web applications using the MERN stack, which consists of MongoDB, Express.js, React, and Node.js. They assist in developing, testing, and maintaining both front-end and back-end components of web applications. Typical responsibilities include writing clean code, fixing bugs, collaborating with senior developers, and integrating APIs. Strong foundational knowledge of JavaScript, database management, and version control (e.g., Git) is essential. This role is ideal for individuals looking to gain hands-on experience and grow their skills in full-stack development.

What kind of projects or tasks might a junior MERN Stack Developer typically work on?

As a Junior MERN Stack Developer, you will often be involved in building and maintaining web applications, implementing new features, and fixing bugs within the application stack. Your day-to-day work may include writing code for both front-end (using React.js) and back-end (using Node.js and Express), working with databases like MongoDB, and collaborating closely with other developers, designers, and project managers. You may also be asked to participate in code reviews, contribute to team discussions on architecture or user experience, and learn best practices for scalable and maintainable code. This hands-on experience helps you develop your technical skills and prepares you for more advanced responsibilities as your career progresses.

What are the key skills and qualifications needed to thrive in the junior MERN Stack Developer position, and why are they important?

To thrive as a Junior MERN Stack Developer, you need a solid understanding of JavaScript, React.js, Node.js, Express, and MongoDB, typically supported by a relevant degree or coding bootcamp. Familiarity with version control systems like Git, Agile development practices, and basic knowledge of RESTful APIs are highly valued, while certifications in web development can enhance your candidacy. Strong problem-solving abilities, good communication skills, and a willingness to learn enable effective collaboration and growth in this role. These skills and qualities are essential for building efficient web applications and contributing successfully to dynamic development teams.

What are the most commonly searched types of Mern Stack Developer jobs in Toronto, ON?

The most popular types of Mern Stack Developer jobs in Toronto, ON are:

What are popular job titles related to Junior Mern Stack Developer jobs in Toronto, ON?

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

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

The top searched job categories for Junior Mern Stack Developer jobs in Toronto, ON are:

What cities near Toronto, ON are hiring for Junior Mern Stack Developer jobs?

Cities near Toronto, ON with the most Junior Mern Stack Developer job openings:

Junior Mern Stack Developer jobs near you
Infographic showing various Junior Mern Stack Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 100% Full Time. Highlights an 91% In-person, and 9% Hybrid job distribution, with an average salary of $118,593 per year, or $57 per hour.

Senior Java Developer - Assistant Vice President

Citi

Mississauga, ON

CA$94K - CA$141K/yr

Full-time

Re-posted 20 days ago

Citibank rating

8.4

Company rating: 8.4 out of 10

Based on 179 frontline employees who took The Breakroom Quiz

39th of 174 rated banks

Job description

The Senior Java Developer is responsible for designing, developing, and delivering high‑quality, scalable, and highly available applications in collaboration with cross‑functional technology teams. This role contributes to the analysis, design, development, testing, and implementation of complex systems, with a strong focus on microservices, cloud-native architectures, and real-time, high-volume applications, particularly within Risk Management and Capital Markets domains. Key Responsibilities
  • Design, develop, and implement robust, scalable software solutions using Java and Spring-based frameworks with strong algorithmic and data structure foundations
  • Participate in feasibility studies, system analysis, time and cost estimation, IT planning, and risk assessments to support business objectives
  • Develop and maintain business-critical, high-volume, real-time, and highly available applications, including web-based Risk Management systems
  • Lead and contribute across all phases of the SDLC: requirements analysis, design, development, testing, deployment, and production support
  • Build and deploy microservices-based applications on cloud infrastructure using container technologies
  • Implement and integrate messaging and asynchronous processing solutions (e.g., Kafka, gRPC, JMS)
  • Ensure application reliability, performance, security, and observability using modern monitoring and logging stacks
  • Participate in code reviews, design discussions, and architecture sessions, contributing ideas and best practices
  • Provide timely support and troubleshooting for production issues, coordinating with support, infrastructure, and other development teams
  • Recommend and implement post‑deployment improvements, security controls, and process enhancements
  • Act as a subject matter expert (SME), advising senior stakeholders and mentoring junior developers
  • Manage multiple tasks and dependencies effectively to deliver high-quality, on-time solutions
  • Ensure adherence to enterprise standards, policies, regulatory requirements, and sound risk management practices
Required Qualifications
  • 5+ years of hands-on experience developing enterprise applications as a Senior or Full Stack Developer
  • Strong expertise in Core Java, Spring Framework, Spring Boot, and Spring Cloud
  • Solid understanding of RESTful APIs, asynchronous programming, multi-threading, and parallel processing
  • Proven experience with microservices architecture and cloud-native development
  • Strong experience with container technologies such as Docker, Kubernetes, and OpenShift
  • Experience with messaging and streaming technologies including Kafka, gRPC, JMS, and GraphQL
  • Hands-on experience with persistence technologies, including relational databases, NoSQL databases, distributed caches (e.g., Ignite)
  • Good understanding of Test Driven Development (TDD) and testing frameworks such as JUnit
  • Experience with observability and monitoring tools such as ELK, Grafana, and Prometheus
  • Proven experience integrating and leveraging Generative AI tools and Large Language Models (LLMs) to enhance developer productivity and application capabilities
Preferred / Nice-to-Have
  • Experience in the financial services industry, particularly in Risk Management or Capital Markets
  • Working knowledge of Fixed Income products
  • Experience with Python scripting and data analysis
  • Experience with Trino
  • Knowledge of enterprise risk and regulatory considerations
Education
  • Bachelor’s degree or University degree, or equivalent practical experience
This job description provides a high-level overview of the responsibilities and qualifications required. Other job-related duties may be assigned as needed.

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Job Family Group: Technology

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Job Family:Applications Development

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Time Type:Full time

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Primary Location Full Time Salary Range:$94,300.00 - $141,500.00

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Most Relevant Skills Please see the requirements listed above.

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Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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This job opening is for an existing job vacancy.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

 

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.
View Citi’s EEO Policy Statement and the Know Your Rights poster.

What Citibank employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

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About Citigroup Inc

Sourced by ZipRecruiter

We live in an increasingly complex world. Companies these days are either born global or are going global at record speed. Business and geopolitics are forging an entirely new dynamic and consumers now expect financial services to be a seamless part of their digital lives. Citi is a bank that’s uniquely positioned for this moment. Through our vast global network and our on-the-ground expertise, we can connect the dots, anticipate change and empathize the needs of our clients and customers in ways that other banks simply cannot. Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We have set expectations for how we must act to bring our mission to life. These expectations are at the heart of our Leadership Principles – we take ownership, we deliver with pride and we succeed together.

Industry

Banking and credit intermediation

Company size

5,001 - 10,000 Employees

Headquarters location

New York City, NY, US

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