Senior Full Stack Engineer

Senior Full Stack Engineer (Toronto, ON, M5A 3N7) | 04/03/26

Job Description Job Title:

Senior Full Stack Engineer Location:

Toronto, ON (Onsite/Hybrid) The Opportunity We are building with best-in-class technologies including JavaScript, React, Redux, Node.js, MongoDB, and more. We are looking for a Senior Full Stack Engineer / Lead to join our team and help us build high-quality customer experiences. This role involves not only writing software using our tech stack but also collaborating with Quality Engineers and Software Engineers to deliver reliable and high-quality solutions. We value engineers who take pride in their code and the team they work with. Key Responsibilities Contribute to strengthening the team's engineering capabilities Understand end-to-end architecture (backend to frontend) and provide inputs to improve technical strategy Work with legacy systems (C#.Net or Java) and modern stack (Node.js/React) to support ongoing transformation Develop and test high-quality React UIs and Node.js APIs using internal and open-source libraries Participate in pair programming to learn, mentor, and coach team members Contribute to open source and inner source projects such as MUX (UI Component Library) Improve system performance and reliability using tools like New Relic and ADX for monitoring and logging Take ownership and enjoy building quality software Additional Responsibilities Design, develop, test, deliver, maintain, and enhance business applications across the full software development lifecycle Follow disciplined coding practices to ensure high-quality and scalable solutions Apply design patterns, automation, and semantic versioning Utilize development frameworks and third-party libraries Create detailed system design specifications Develop prototypes using various design techniques Work with CI/CD pipelines, API development, DevSecOps, and database design Demonstrate strong understanding of core web technologies Use testing frameworks and tools effectively Required Skills & Experience 8+ years of Full Stack development experience Strong experience in JavaScript, React, and Redux Experience mentoring junior developers Hands-on experience with Node.js for microservices development Experience with at least one database: Microsoft SQL Server, Azure SQL, or MongoDB Familiarity with Jira for task management Experience with DevOps tools such as Jenkins, Snyk, Azure, SonarQube Proficiency with GitHub for source control Experience with automated testing tools: Selenium, WebdriverIO, Mocha, Chai, Postman, Jest Experience with C# .Net and/or Java J2EE for supporting and integrating legacy applications Regards, Ajay Tanwar E-Solutions Inc. | 2 North Market Street | Suite #400 | San Jose, CA - 95113

US Direct:

669-250-0966 |

Fax:

408-521-0167

Email:

ajay.t@e-solutionsinc.com |

Web:

www.e-solutionsinc.com USA | CANADA | UK |

SINGAPORE

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MALAYSIA

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INDIA Disclaimer:

 E-Solutions provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. We especially invite women, minorities, veterans, and individuals with disabilities to apply. EEO/AA/M/F/Vet/Disability Senior Full Stack Engineer1Java, SQL, C#, Azure, .net, react, CI/CD, node Canada