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Added 3 mins ago
Senior Cloud Security Engineer ( Global Security)
Royal Bank of Canada
Toronto, ON · Vancouver, BC
Full-time
…RBC’s AWS environment. In this role as a Senior Cloud Security Engineer, you will develop AWS security controls and drive the development of innovative cloud security solutions to enhance…
Added 3 mins ago
Senior Technical Support Engineer
Sentry
Remote, Canada
$125,000 to $150,000 USD / year
Full-time · Remote
We are architecting the Technical Support engine. We’re looking for a veteran engineer to help us redefine the standard of technical support by combining deep human expertise with…
Added 18 mins ago
Product Engineer
RaiseDesk
Remote, Canada
Full-time · Remote
We are looking for a Product Engineer to own major parts of the platform end to end, from data model and backend services through to the interface a customer actually uses. You will make…
Added 18 mins ago
Senior Applied AI Engineer
RaiseDesk
Remote, Canada
Full-time · Remote
We are looking for an Applied AI Engineer to own the intelligence layer of the platform: the data that powers investor discovery, the models and retrieval that rank and explain it, and the…
Added 18 mins ago
Senior QA Engineer
RaiseDesk
Remote, Canada
Full-time · Remote
We are looking for a Senior QA Engineer to own product quality across a fast-moving, AI-heavy platform. The emphasis is on hands-on exploratory testing and judgment: much of what this…
Added 18 mins ago
Senior Software Engineer II, Full Stack - Growth (Hybrid)
Homebase
Toronto, ON
$175,000 to $205,000 USD / year
Full-time
We’re looking for a Full Stack Senior Software Engineer 2 who’s passionate about building AI-powered, high-velocity systems that transform how our Growth, Sales, and Product teams operate.…
Added 48 mins ago
Platform Engineer – Netezza
K&K Global Talent Solutions INC.
Toronto, ON
Full-time
…real-time data processing. This role involves working on data platform modernization, cloud migrations, Data Warehousing and ETL in a fast-paced enterprise…
Added 48 mins ago
Full Stack Engineer
TRANSREACH TALENT LLC
Vancouver, BC
Full-time
Looking for Full Stack Engineer excited to work with Exciting High Growth Startup
Added 1 hour ago
Salesforce Platform Engineer
Royal Bank of Canada
Toronto, ON
Full-time
We are seeking an experienced Salesforce Platform Engineer to support the design, development, and enhancement of our commercial lending platform built on nCino. You will work closely with…
Added 1 hour ago
Infrastructure Automation Engineer
K&K Global Talent Solutions INC.
Toronto, ON
Full-time
We are seeking an experienced Infrastructure Automation Engineer to design, automate, and manage large-scale infrastructure systems. The ideal candidate will have strong Python development…
Added 1 hour ago
Role: AI Platform DevOps Engineer
Triunity Software, Inc.
Canada
Contract
Build and operate observability for LLM gateways, model routing, MCP servers, agent runtimes, and AI platform services.
Added 2 hours ago
Software Engineer
Royal Bank of Canada
Toronto, ON
Full-time
Added 2 hours ago
Cloud Security Engineer
Experis Canada
Montreal, QC
Contract
Cloud Security Engineer (Golang, HashiCorp Vault)
Added 2 hours ago
Full Stack Developer
Lasso Informatics
Montreal, QC
Full-time
…sites and years of study. Lasso Informatics ropes it in: our platform pulls it all into one place so researchers around the world can stop fighting with their data and get to discoveries…
Added 2 hours ago
Sr. Data Analyst -1806 (Asset Management)
Amyantek
Toronto, ON
Contract
As a Senior Data Engineer, you will be a key contributor to SLC’s enterprise data platform
Added 2 hours ago
Senior SailPoint IIQ Engineer
Cognizant
Brampton, ON
Full-time
We are seeking a Lead SailPoint IdentityIQ Engineer with strong expertise in Identity Governance and Administration (IGA), SailPoint IdentityIQ implementation, and IAM operations. This role…
Added 2 hours ago
Senior Java Microservices Engineer
Publicis Sapient
Calgary, AB
Full-time
We are looking for highly skilled Senior Java Microservices Engineer to join a strategic client engagement in Calgary. We are looking for a hands-on senior engineer who combines strong…
Added 2 hours ago
Test & Validation Engineer / Ingénieur(e) en essais et validation
Vention
Montreal, QC
Full-time
…record time with the only hardware and software AI-powered platform built for the factory floor. Our technology powers over 25,000 machines across 4,000 factories across 5 continents and we…
Added 2 hours ago
Storage GPFS
KTek Resourcing
Montreal, QC
Contract
Storage Site Reliability Engineer (GPFS / Storage Ops)
Added 2 hours ago
BI Platform Operations Engineer
Apptoza Inc.
Toronto, ON
Contract
Experience operating a BI Platform-as-a-Service or BI-as-a-Service environment.
Added 2 hours ago
Infra / Cloud & GenAI Architect
Tata Consultancy Services
Calgary, AB
Full-time
Must to have Azure Solutions Architect Expert certification, Azure DevOps Engineer Expert certification, AWS Certified Solutions Architect certification
Added 2 hours ago
Test Automation Engineer
Accenture
Mississauga, ON
Full-time
Exposure to cloud platforms such as Microsoft Azure, AWS, or Google Cloud Platform.
Added 2 hours ago
Software Engineer
RBC
Toronto, ON
Full-time
Added 2 hours ago
Senior AI Engineer - Evisort AI
Workday
Vancouver, BC · Canada, BC, Vancouver
Full-time
…world around us. As a Fortune 500 company and a leading AI platform for managing people, money, and agents, we’re shaping the future of work so teams can reach their potential and focus on…
Added 2 hours ago
Senior Software Engineer, Security Engineering (Auth0)
Okta
Toronto, ON
We are looking for a Senior Software Engineer that will join the Auth0 Security Engineering organization. In this role, you will join a team of Software Engineers dedicated to building and…

Closed listing

AceStack

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

Toronto, ON, Canada

Job type: Part-time
Closing date: 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

This opening has closed.

The original listing is kept below for reference.

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Added 6 hours ago
Senior Full Stack Engineer : Toronto, ON : Hybrid : FTE
AceStack · Toronto, ON, Canada

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Original job description

Archived listing. The details below describe a past opening.

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.

About employer

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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