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Added 4 mins ago
Senior Recruiter, Executive Search & Strategic Talent
Transdev Canada
Brossard, QC
Full-time
…efficient, easy-to-use and environmentally friendly transportation services that connect people and communities. Our approach is rooted in long-term partnerships with public authorities and…
Added 4 mins ago
Product Strategy and Operations, Senior Associate - New Verticals | Housing
EliseAI
Toronto, ON
Full-time
…accessibility, and deliver a seamless experience across essential services. We recently raised a $250 million Series E round led by Andreessen Horowitz to accelerate this…
Added 4 mins ago
Senior Platform Developer
nesto
Canada
Full-time
We are looking for a passionate Senior Platform Developer who shares our core principles and wishes to join our dedicated Platform team. This person must have the technical and…
Added 4 mins ago
Senior Civil Engineer - Land Development
Egis in Canada
Ottawa, ON
Full-time
We boast a seasoned multi-disciplinary crew ready to support your land development endeavor. To guarantee seamless project delivery, we provide an all-encompassing approach and a…
Added 4 mins ago
Technician, Supplier Revenue
Couche-Tard
Laval, QC
Full-time
Under the supervision of the Senior Manager, Supplier Revenues, and as part of the Accounting team, the Supplier Revenue Technician provides valuable support to the Merchandising team by…
Added 4 mins ago
Orthopaedic Technologist - Fracture Clinic
William Osler Health System
Toronto, ON · Etobicoke, ON
Contract
A hospital system built for and by the community, we continue to expand our services to meet the needs of a growing population, creating opportunities for increased hands-on skills…
Added 5 mins ago
Manager
Crowe MacKay
Vancouver, BC
Full-time
Develop an in-depth knowledge of the fundamentals of accounting and assurance services, particularly Compilations and Review Engagements;
Added 19 mins ago
Mining Engineer
Foran Mining
SK · Saskatchewan, Canada
Full-time
…a cornerstone asset and one of the most significant copper development projects in Canada. With commercial production expected in the second half of 2026, this world-class deposit contains…
Added 19 mins ago
Senior Manager Benefits & Wellness
IG Wealth Management
MB · Manitoba, Canada
Full-time
…December 31, 2025. It offers financial planning and investment services to over two million Canadians through IG Wealth Management and Mackenzie…
Added 19 mins ago
Senior Manager Benefits & Wellness
IG Wealth Management
ON · Ontario, Canada
Full-time
…December 31, 2025. It offers financial planning and investment services to over two million Canadians through IG Wealth Management and Mackenzie…
Added 19 mins ago
Short-Range Mine Planner
Globe 24-7
Dubreuilville, ON
$98,000 to $147,900 CAD / year
Full-time
The Short Term Mine Planning Engineer will report to the Senior Production Engineer and play a central role in the development, maintenance, and optimization of short range mine plans for a…
Added 19 mins ago
Associate Director, Artificial Intelligence
Thompson Rivers University
Kamloops, BC
Full-time
Build, structure, and grow the AI & Automation team, with accountability for hiring, performance management, and career development.
Added 34 mins ago
Senior Data Platform Developer - AI Platform
Geotab
Oakville, ON
Full-time
We are always looking for amazing talent who can contribute to our growth and deliver results! Geotab is seeking a Senior Data Platform Developer who will be building the Geotab internal…
Added 34 mins ago
Senior Data Platform Developer - AI Platform
Geotab
Toronto, ON
Full-time
We are always looking for amazing talent who can contribute to our growth and deliver results! Geotab is seeking a Senior Data Platform Developer who will be building the Geotab internal…
Added 34 mins ago
Senior Client Manager
State Street
Toronto, ON
Full-time
…technology wrapped in an exceptional client service experience. As a Senior Client Manager, you will be responsible for client satisfaction, retention and growth by ensuring the effective…
Added 34 mins ago
Veterinarian, Pretoria Animal Hospital
VCA Animal Hospitals
Ottawa, ON
Full-time
Support senior pets by monitoring health, managing chronic conditions, and providing preventive care to maintain quality of life
Added 34 mins ago
Senior Data Platform Developer - AI Platform
Geotab
Waterloo, ON
Full-time
We are always looking for amazing talent who can contribute to our growth and deliver results! Geotab is seeking a Senior Data Platform Developer who will be building the Geotab internal…
Added 34 mins ago
Murex Integration Delivery Lead
Accenture
Toronto, ON · Montreal, QC
Full-time
Accenture is a leading global professional services company that helps the world's leading businesses, governments and other organizations build their digital core, optimize their…
Added 34 mins ago
Principal, Infrastructure Architecture
RBC
Toronto, ON · Mississauga, ON
Full-time
…responsible for establishing the strategic direction and leading the development and support of infrastructure solutions globally for all RBC businesses including, Technology and…
Added 34 mins ago
Senior Red Team Operator, Adversary Emulation (Global Security)
RBC
Toronto, ON · Ottawa, ON · Calgary, AB
Full-time
Develop offensive capabilities: exploit development, novel C2 channels, automation, and more.
Added 34 mins ago
Senior Manager Process Re-Engineering
RBC
Toronto, ON
Full-time
As the Senior Manager, Process Re-engineering, in Operations Process Engineering (OPE), you will report to the Director Operations Process Re-Engineering Practice & Optimization and play a…
Added 34 mins ago
Cost Analyst
RBC
Bedford, QC
Full-time
Knowledge of products and services in relation to assigned invoices.
Added 34 mins ago
Senior Manager, Corporate Card Vendor Programs
RBC
Toronto, ON
Full-time
Champion employee and supplier experience through user feedback collection, training development, and continuous service quality improvements
Added 34 mins ago
Senior Manager, Employee Expenses Category
RBC
Toronto, ON
Full-time
6–10 years of progressive experience in procurement, strategic sourcing, or category management, with focus on services/technology categories
Added 34 mins ago
Bus Dev Dir (MP Can)
ManpowerGroup
Mississauga, ON
The Business Development Director (BDD) is responsible for selling large scale, comprehensive ManpowerGroup services to clients, primarily focused on new business development. The BDD will…

AceStack

Senior Full Stack Engineer / Toronto, ON (Onsite) - FTE

Toronto, ON, Canada

Job type: Part-time
Apply by: Oct 29, 2026
Experience: 5+ years of professional software development experience with strong expertise in Java and/or Node.js across the full software development lifecycle.
Posting language: English
Posted: Sep 29, 2026

Apply About employer

Applications open in a new tab.

Original job description

Role: Senior Full Stack Engineer

Location: Toronto, ON

Work Arrangement: Onsite

Role Overview

We are seeking a Senior Full Stack Engineer with strong hands-on experience in Java, Spring Boot, REST APIs, microservices, automated testing, and modern software engineering practices. The ideal candidate will have a strong focus on clean code, TDD, code quality, application security, CI/CD, and scalable application development, along with exposure to modern UI and AI-assisted development technologies.

Key Responsibilities

Design, develop, test, and maintain scalable, secure, and high-quality Java applications, APIs, and microservices.
Apply clean code principles, SOLID principles, design patterns, and software engineering best practices.
Develop RESTful web services and backend applications using Java, Spring, and Spring Boot.
Build modular, reusable, maintainable, and highly testable application components.
Develop comprehensive unit and automated tests using JUnit and Mockito.
Apply Test-Driven Development (TDD) and continuous testing practices to improve quality and prevent regressions.
Leverage core Java concepts including collections, generics, streams, lambdas, exception handling, concurrency, multithreading, and JVM memory management.
Conduct code reviews, participate in pair programming, and enforce coding standards and engineering best practices.
Refactor legacy code and reduce technical debt while improving readability, performance, maintainability, and testability.
Implement security-by-design practices throughout the software development lifecycle.
Apply secure coding practices and address application vulnerabilities in accordance with OWASP and industry standards.
Integrate unit testing, static code analysis, code coverage, security scanning, and quality gates into CI/CD pipelines.
Use tools such as SonarQube and JaCoCo to monitor and continuously improve code quality and test coverage.
Work with Maven or Gradle, Git, Bitbucket, and Jenkins as part of the development and delivery lifecycle.
Diagnose and resolve complex technical, performance, security, production, and reliability issues.
Collaborate with architects, business analysts, application analysts, QA/testing teams, and operations teams in a cross-functional Agile environment.
Contribute to technical documentation, architecture discussions, design reviews, and continuous engineering improvements.
Evaluate and adopt emerging technologies, including AI-assisted development and developer experience platforms, where they provide measurable engineering value.

Required Skills & Experience

5+ years of professional software development experience with strong expertise in Java and/or Node.js across the full software development lifecycle.
Strong hands-on experience with Core Java, including:
Collections
Generics
Streams & Lambdas
Exception Handling
Concurrency & Multithreading
JVM Memory Management
Strong experience developing RESTful APIs and microservices using Spring/Spring Boot.
Hands-on experience writing effective unit tests using JUnit and Mockito or equivalent mocking frameworks.
Strong understanding and practical application of TDD, test automation, and continuous testing.
Strong knowledge of Clean Code, SOLID principles, design patterns, refactoring, and code quality practices.
Experience with SonarQube, JaCoCo, static code analysis, code coverage, and security scanning.
Experience with Maven or Gradle for build and dependency management.
Strong experience with Git and Bitbucket.
Experience integrating automated testing and quality/security gates into CI/CD pipelines, preferably using Jenkins.
Working knowledge of secure coding practices and OWASP Top 10.
Experience with modern frontend technologies such as React, Angular, TypeScript, JavaScript, HTML5, and CSS is preferred.
Strong analytical, troubleshooting, problem-solving, communication, and technical documentation skills.
Ability to work effectively in a fast-paced, Agile, cross-functional environment.

Nice to Have / Preferred Skills

Experience with Node.js and backend JavaScript/TypeScript development.
Experience with AI-assisted development tools, such as GitHub Copilot.
Exposure to AI agents, agentic development workflows, or AI-powered developer tooling.
Experience with Backstage or other developer portal/platform technologies.
Experience designing and maintaining CI/CD pipelines and developer tooling.
Experience with Docker and Kubernetes.
Experience with AWS or other cloud platforms.
Experience with Jira, Confluence, and Agile delivery methodologies.
Experience with modern developer experience and engineering productivity platforms.
University Degree or College Diploma in Computer Science, Engineering, or a related technology discipline.

Key Technical Keywords

Java, Core Java, Spring Boot, Spring, REST APIs, Microservices, JUnit, Mockito, TDD, Test Automation, Clean Code, SOLID, Design Patterns, SonarQube, JaCoCo, Maven, Gradle, Git, Bitbucket, Jenkins, CI/CD, OWASP, Secure Coding, React, Angular, TypeScript, JavaScript, Node.js, Docker, Kubernetes, AWS, Backstage, GitHub Copilot, AI Agents, Agile.

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More about this job

Responsibilities

Design, develop, test, and maintain scalable, secure Java applications, REST APIs, and microservices, applying clean code, TDD, automated testing, and secure engineering practices. Improve code quality and delivery pipelines, troubleshoot complex issues, and collaborate with cross-functional Agile teams on architecture, documentation, and engineering improvements.

Requirements

Requires 5+ years of software development experience, strong Java and Spring Boot expertise, and practical experience with REST APIs, microservices, automated testing, TDD, and CI/CD quality gates. Candidates should also know secure coding and OWASP practices, build tools, Git, and code-quality tools; frontend experience is preferred, while a related university degree or college diploma is listed as a preferred qualification.

Skills

Java
Spring Boot
REST APIs
Microservices
JUnit
Mockito
Test-Driven Development
Clean Code
SOLID Principles
SonarQube
CI/CD
Secure Coding
Git
Jenkins
React
Node.js

Visa sponsorship

Not detected in the job text

Keywords

Java
Core Java
Spring
Spring Boot
REST APIs
Microservices
JUnit
Mockito
Test-Driven Development
Test Automation
Clean Code
SOLID Principles
Design Patterns
SonarQube
JaCoCo
Maven
Gradle
Git
Bitbucket
Jenkins
CI/CD
OWASP
Secure Coding
React
Angular
TypeScript
JavaScript
Node.js
Docker
Kubernetes

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