Jobs in Canada

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EverCommerce - Staff Engineer
Evercommerce
ON
- $160,000 to $190,000 CAD / year
- Full-time
Technical Mentorship & Engineering Excellence: Actively mentor, coach, and level up Software Engineers (SWEs) and Senior SWEs across distributed systems design, clean Java coding standards,…
Added 1 day ago
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QE Lead, Functional
Insight Global
Vancouver, BC
- $113,000 to $140,000 CAD / year
- Contract
senior technical role responsible for ensuring the quality, reliability, and performance of member-facing platforms through hands-on engineering leadership and execution of automation-first…
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Senior Java Low Latency Developer
Astra North Infoteck Inc.
Mississauga, ON
Design, develop, test, and maintain enterprise-grade Java applications.
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Senior - Full Stack (Java, React, OpenShift)
Procom
Toronto, ON
- $67.5 to $90 CAD / hour
Senior - Full Stack (Java, React, OpenShift):
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Quality Engineering Architect
Procom
Mississauga, ON
- $60 to $80 CAD / hour
We are seeking a visionary and hands-on Senior Software Development Engineer in Test (SDET) / Quality Engineering Architect to define, champion, and drive the global quality engineering…
Added 1 day ago
RC
Senior Software Developer
Randstad Canada
Toronto, ON
- Contract
We are seeking an experienced Senior Software Developer specializing in Oracle Siebel CRM to lead the design, development, configuration, integration, and technical testing of enterprise…
Added 1 day ago
RC
Senior Software Developer - Full Stack
Randstad Canada
Toronto, ON
- Contract
We are seeking a seasoned Senior Software Developer - Full Stack to lead the technical design, development, integration, and maintenance of large-scale enterprise web applications and…
Added 1 day ago
IG
Lead Java Developer - Market Rates
Insight Global
Toronto, ON
- Contract
1+ years setting technical direction in a lead or senior engineering capacity (hands-on technical leadership, not people management)
Added 1 day ago
RC
Senior Software Developer - Full Stack
Randstad Canada
Toronto, ON
- Contract
We are seeking a seasoned Senior Software Developer - Full Stack to lead the technical design, development, integration, and maintenance of large-scale enterprise web applications and…
Added 1 day ago
RC
Senior Systems Testing/QA Specialist
Randstad Canada
Toronto, ON
- Contract
We are seeking an experienced Senior Systems Testing/QA Specialist to lead and execute comprehensive quality assurance across enterprise software solutions and Commercial Off-the-Shelf…
Added 1 day ago
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Senior Developer/CCaaS Consultant
Querentia Inc.
Toronto, ON
- Contract
We are hiring for a Senior Developer/CCaaS Consultant for a contract role. I've included a brief JD below. Please let me know if you're interested. Excellent hourly rate and Fully remote.
Added 1 day ago
RC
Senior Software Developer - Full Stack
Randstad Canada
Toronto, ON
- Contract
We are seeking a highly experienced Senior Software Developer - Full Stack to lead the technical design, development, integration, and maintenance of large-scale enterprise web applications…
Added 1 day ago
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Enterprise Solution Architect, Legacy Modernization (Contract)
Altis
Toronto, ON
- $88 to $100 CAD / hour
- Contract
Collaborate with experienced technical teams and senior decision-makers.
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Sr. Software Developer
Open Text Corporation
Waterloo, ON
As a Senior Software Developer, you will be a key contributor to OpenText’s cloud &on-prem product suite. You will work within a collaborative Agile team to maintain existing capabilities…
Added 1 day ago
Senior Software Engineer
Prompt.io Inc.
Canada
Prompt.io Inc. is looking for a Senior Software Engineer to help design, build, and scale the technology that powers our platform. You’ll take ownership of complex technical work,…
Added 1 day ago
RC
Senior Software Developer
Randstad Canada
Toronto, ON
- Contract
We are seeking an experienced Senior Software Developer to provide hands-on technical leadership, solution architecture, and full-stack application delivery for enterprise CRM, Customer…
Added 1 day ago
RC
Senior Software Developer
Randstad Canada
Toronto, ON
- Contract
We are seeking an experienced Senior Software Developer to provide team leadership, technical guidance, and full-lifecycle application development for complex enterprise solutions. In this…
Added 1 day ago
RC
Senior Software Developer
Randstad Canada
Toronto, ON
- Contract
We are seeking an experienced Senior Software Developer to lead the technical design, development, enhancement, and maintenance of enterprise applications, identity solutions, and analytics…
Added 1 day ago
Senior Software Engineer - Control Plane (Hosted Foundations / Applications)
Elastic
Canada
Contribute and lead technical plans and direction within our team and across other product teams in Elastic
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Lead Engineer, Agentic Solutions & Automation
Company 19 - John Hancock Life Insurance Company (U.S.A.)
Toronto, ON · Waterloo, ON
- Full-time
The Lead Engineer, Agentic Solutions & Automation will be a key member of the team responsible for advancing agentic platforms and intelligent automation across North American Wealth at…
Added 1 day ago
RQ11657 - Software Developer - Senior
Flexstaf IT
Toronto, ON
Must have these technical skills:
Added 1 day ago
RQ11720 - Software Developer - Senior
Flexstaf IT
Toronto, ON
Must have experience leading teams and managing development teams
Added 1 day ago
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Lead Full Stack Product Engineer - Enterprise Modernization
Tech Talent International
Montréal, QC
- $90 to $110 CAD / hour
- Full-time
Location: Hybrid - Montreal, QC -(2/3 days per week onsite)
Added 1 day ago
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Salesforce Revenue Cloud Architect
Astra North Infoteck Inc.
Toronto, ON
- Contract
A proven Senior Salesforce Technical Architect with 10+ years of design/architect experience and at least 5 full life cycle Salesforce.com implementations, with strong expertise in at least…
Added 1 day ago
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ARCHITECT / LEAD APPLICATION MODERNIZATION
Tech Talent International
Montréal, QC
- $110 to $130 CAD / hour
- Full-time
Location: Hybrid - Montreal, QC -(2/3 days per week onsite)

Randstad Canada

Senior Software Developer - Full Stack

Toronto, ON, Canada

Contract

Apply on randstad.ca About employer

Applications open in a new tab.

Job details

Job type: Contract
Apply by: Dec 20, 2026
Posting language: English
Posted: Oct 22, 2026

Original job description

We are seeking a highly experienced Senior Software Developer - Full Stack to lead the technical design, development, integration, and maintenance of large-scale enterprise web applications and platform capabilities. In this role, you will be responsible for building reusable platform services, robust microservices architectures, and RESTful APIs across the user-interface, workflow, and data-access layers. Leveraging extensive hands-on Java expertise, relational database optimization, and modern security protocols, you will translate complex technical specifications into scalable, secure, and maintainable software solutions within an Agile environment.

Location: Toronto, ON (Fully Onsite – 5 days/week required)

Duration: 11-month contract.

Advantages
Senior Architecture Scope: Lead full-stack engineering across microservices, REST APIs, and enterprise data layers.

Robust Tech Stack: Hands-on development utilizing Java, Azure DevOps, OAuth 2.0, JWT, and SQL tuning.

High-Impact Integration: Build reusable platform services that streamline core business workflows and identity integrations.

Dedicated Onsite Collaboration: Partner directly with architects, UX designers, and technical leads in a focused Toronto workspace.

Responsibilities
Full-Stack Application Development: Design, write, compile, debug, test, and maintain enterprise application code across the front-end, backend, API, workflow, and data-access layers using Java and modern web frameworks.

Microservices & API Architecture: Build and maintain scalable Java-based microservices, REST APIs, and web services applying clean code practices, object-oriented principles, and modern design patterns.

Database & Query Optimization: Develop and manage database objects, data transformation pipelines, and complex SQL/PL-SQL queries across relational and hierarchical databases, ensuring optimal performance through SQL tuning.

Security & Identity Integration: Implement secure communication protocols, security gateways, identity integrations, SSL certificates, JSON Web Tokens (JWT), and OAuth 2.0 authorization frameworks.

Pipeline Automation & DevOps: Utilize Azure DevOps or equivalent build tools to maintain source control, configure deployment scripts, and manage continuous integration and automated deployment pipelines.

Automated Testing & Quality Assurance: Construct and execute automated unit, integration, API, database, and user interface test suites to maintain application reliability and test coverage.

Technical Guidance & Production Support: Conduct code reviews, participate in design walkthroughs, troubleshoot complex operational defects, perform data migrations, and author technical build documentation.

Qualifications
Senior Full-Stack Experience: 10+ years of experience designing and developing large-scale, multi-client web applications or an equivalent depth of senior development experience (Strictly Required).

Core Java & Relational Databases: Extensive hands-on Java development experience working with Oracle, SQL Server, or comparable relational databases (Strictly Required).

REST APIs & Microservices: Significant experience designing and developing REST APIs, RESTful web services, and microservice architectures (Strictly Required).

Security Protocols & Gateways: Proven experience with security gateways and protocols, including JSON Web Tokens (JWT), OAuth 2.0, SSL certificates, secure communications, and identity integration (Strictly Required).

Database Tuning & Integration: Demonstrated experience with query languages, SQL tuning, middleware, communications protocols, system conversion, and data migration (Strictly Required).

Nice-to-Have Assets:
Prior software development experience within a public sector environment.

Hands-on experience managing CI/CD pipelines, work tracking, and build automation in Azure DevOps.

Strong background in rapid application development (RAD) and Agile delivery methodologies.

Summary
If you're interested in the "Senior Software Developer - Full Stack" role based in Toronto, we encourage you to apply online at www.randstad.ca.
Only qualified candidates will be contacted for the next steps. We look forward to hearing from you!

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to accessibility@randstad.ca to ensure their ability to fully participate in the interview process.

This posting is for existing and upcoming vacancies.

Apply on randstad.ca About employer

More about this job

Responsibilities

The Senior Software Developer at Randstad Canada will design, build, test and maintain enterprise web applications and APIs, optimize databases, and integrate security and identity services. The role also includes automating deployments, reviewing code and supporting production issues.

Requirements

Candidates need 10+ years of senior full-stack development experience, extensive Java and relational database work, and proven REST API and microservices experience. They also need hands-on experience with security protocols such as JWT, OAuth 2.0 and SSL.

Skills

Java
Microservices architecture
REST APIs
RESTful web services
OAuth 2.0
JSON Web Tokens (JWT)
SSL certificates
Identity integration
Security gateways
SQL
PL/SQL
SQL tuning
Oracle
SQL Server
Relational databases
Hierarchical databases
Data migration
Middleware
Azure DevOps
CI/CD
Build automation
Source control
Automated testing
Unit testing
Integration testing

Keywords

Senior Software Developer
Full Stack Developer
Java
REST API
Microservices
OAuth 2.0
JWT
SQL tuning
Oracle
SQL Server
PL/SQL
Azure DevOps
CI/CD
Agile
RAD
Public sector
Data migration
Toronto contract
Software Development
Web Development

Seniority

Senior

Tools

Azure DevOps
Oracle
SQL Server
JSON Web Tokens
OAuth 2.0

Languages

English

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Work requirements

Jobs in Canada