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Added 3 days ago
C
Developer, Quality Assurance & Automation
Croesus
Laval, QC
- Full-time
Part of the Technical Quality Assurance team, the Developer, Quality Assurance & Automation plays a key role in designing, automating, and optimizing our Web, API, and Performance testing…
Added 3 days ago
Q
Full Stack Software Developer (Java/React)
Querentia
Toronto, ON
- Contract
We are seeking an experienced Full Stack Software Developer with strong technical leadership capabilities and expertise in enterprise application development, Microsoft Dynamics 365, Power…
Added 3 days ago
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Software Developer
PolicyAdvisor
Oakville, ON
- $70,000 to $80,000 USD / year
- Full-time
We are seeking an Software Developer to join our dynamic team at PolicyAdvisor Brokerage (PAB) Inc. As a Software Developer, you will play a pivotal role in designing and implementing…
Added 3 days ago
Q
Senior Software Engineer
Querentia
Toronto, ON
- Contract
Our client is looking for a Senior Front-End Developer to build and maintain the accessible, responsive, user-facing side of a large enterprise platform. You'll turn approved research,…
Added 3 days ago
AI
ForgeRock Developer
Apptoza Inc.
Montreal, QC
- Contract
We are seeking a highly skilled ForgeRock Developer with expertise in Identity and Access Management (IAM) solutions. The ideal candidate will be responsible for designing, developing,…
Added 3 days ago
AG
Data Scientist (Master's) - Montreal (2027 Start Date) | Scientifique des données (diplôme de maîtrise) - Montréal (Date de début 2027)
Analysis Group
Montreal, QC
- Full-time
Experience working within a Linux environment is a plus, as well as experience with Docker and front-end development using a JavaScript framework (e.g., Vue.js, Angular).
Added 3 days ago
AI
AI Platform Engineer
Apptoza Inc.
Halifax, NS
- Full-time
Champion developer experience and DevOps best practices.
Added 3 days ago
AG
Senior Data Scientist (PhD) - Montreal (2027 Start Date) | Scientifique des données senior (diplôme de doctorat) - Montréal - (Date de début 2027)
Analysis Group
Montreal, QC
- Full-time
Experience working within a Linux environment is a plus, as well as experience with Docker and front-end development using a JavaScript framework (e.g., Vue.js, Angular).
Added 3 days ago
EF
Senior Software Engineer, Finance System
Element Fleet Management
Toronto, ON
- Full-time
You have hands-on experience with modern programming languages such as Java, C#, Python, or JavaScript/TypeScript, as well as front-end technologies such as React or Angular.
Added 3 days ago
Manager, Product Design - Okta Research & Development
Okta
Toronto, ON
Possesses at least a basic understanding of HTML / CSS / JavaScript.
Added 3 days ago
TC
Senior Java Back-End Developer
TMC Canada
Montreal, QC
- Full-time
TMC is looking for a Senior Java Back-End Developer to join a strategic technology modernization initiative within a leading global financial institution.
Added 3 days ago
NC
Lead Developer React
National Consultants Professionals Ltd
Toronto, ON · Etobicoke, ON
- $110,000 to $120,000 CAD / year
- Full-time
Job Description: Lead Developer IV, Front End
Added 3 days ago
TS
Technical E-Commerce Manager [Shopify] [Canada]
The Super Patch Company
Mississauga, ON
- Full-time
Maintain and improve the Shopify theme (Liquid, HTML/CSS, JavaScript) through a GitHub-based workflow.
Added 3 days ago
O
Senior Backend Developer
Off2Class
Toronto, ON · Greater Toronto Area, Canada
- Full-time
The Senior Back-End Developer is responsible for strengthening and extending the Off2Class software platform through reliable, scalable, and maintainable back-end development. This role…
Added 3 days ago
TI
Software Engineering Intern
Trimble Inc.
Richmond Hill, ON · Canada - Richmond Hill, Ontario (Applanix)
- Full-time
Experience or knowledge of HTML, CSS, and JavaScript.
Added 3 days ago
TI
Automated Test Engineering Intern (16-Month Internship)
Trimble Inc.
Richmond Hill, ON · Canada - Richmond Hill, Ontario (Applanix)
- Full-time
Demonstrated programming capability in Python, JavaScript, TypeScript, or Java alongside solid Git version control skills.
Added 3 days ago
Full Stack Software Developer
GHD Group Pty Ltd
Waterloo, ON
We're on the lookout for an Intermediate Full-Stack Software Developer to join our Waterloo, Ontario office. You're a strong engineer with 5+ years of experience who enjoys solving real…
Added 3 days ago
E
Full Stack Developer Advisor
Enbridge
Calgary, AB · Edmonton, AB
- Full-time
…sustainable growth. We are seeking a highly motivated Full Stack Developer Advisor to join our Control Centre Applications Team. In this role, you will provide technical leadership,…
Added 3 days ago
TI
Automated Test Engineering Intern (16-Month Internship)
Trimble Inc.
Richmond Hill, ON
- Full-time
Demonstrated programming capability in Python, JavaScript, TypeScript, or Java alongside solid Git version control skills.
Added 3 days ago
BS
Senior Software Developer
Brainhunter Systems Ltd
Toronto, ON
- Contract
Brainhunter is currently seeking the services of a “Senior Software Developer” for a contract opportunity with one of our Valued Clients.
Added 3 days ago
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3319 – Intermediate Salesforce Specialist
Amyantek
Toronto, ON · Greater Toronto Area, Canada
- Contract
We are seeking an Intermediate Salesforce Developer with strong experience across the core Salesforce platform, including application development, configuration, automation, and emerging AI…
Added 3 days ago
EG
Assistant Professor - Geoscience
European Geosciences Union (EGU)
Toronto, ON
- Full-time
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Added 3 days ago
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Intern, Digital Innovation Office - Business Analyst ( Winter 2027)
Bombardier
Dorval, QC
- Volunteer
Familiarity with browser developer tools or an interest in learning how to use them.
Added 3 days ago
IW
Manager Insights and Reporting
IG Wealth Management
ON · Ontario, Canada
- Full-time
Proficiency in web technologies: HTML, CSS, JavaScript, and web publishing standards
Added 3 days ago
E
Senior Full-Stack Application Developer (Kotlin-Java/React)
Equisoft
Montreal, QC · Quebec, QC · HYBRID - Montreal, Canada
- Full-time
Role: The Senior Full-Stack Application Developer (Kotlin-Java/React), reports to the Director, Product Development, you will be working with a team of 13 members that include developers,…

Off2Class

Senior Backend Developer

Toronto, ON, Canada
Greater Toronto Area, Canada, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Apr 21, 2027
Experience: Minimum of 8+ years of professional software development experience, with significant back-end development responsibility
Posting language: English
Posted: Oct 23, 2026

Original job description

Company Description

Off2Class has been supporting English as a Second Language (ESL) teachers since 2014 with tools and curriculum that simplify lesson planning and address diverse language learning needs. The company collaborates closely with educators worldwide to save time, reduce frustration, and help them focus on teaching. Off2Class provides ready-to-use lesson content, tools for tracking learner progress, and teacher training to support varied implementation models. Its solutions are designed to be practical, user-friendly, and impactful, empowering teachers in different educational settings. Prospective team members join a mission-driven organization dedicated to improving language education through thoughtful technology and content.

Role Description

The Senior Back-End Developer is responsible for strengthening and extending the Off2Class software platform through reliable, scalable, and maintainable back-end development. This role focuses on server-side architecture, APIs, database performance, infrastructure reliability, integrations, testing, and deployment quality.

The Senior Back-End Developer will work closely with the Lead Developer and Technical Project Manager to deliver high-quality back-end solutions that support product growth, platform stability, and a smooth experience for schools, teachers, and learners.

Job Duties

Back-End Development

Design, build, and maintain reliable server-side application logic, APIs, services, and integrations.
Develop scalable back-end features from technical planning through deployment.
Improve existing back-end systems for performance, maintainability, security, and reliability.
Collaborate with front-end developers to ensure APIs and data flows support product requirements effectively.

Architecture & Code Quality

Contribute to back-end architecture decisions and help evolve the platform’s technical foundations.
Write clean, maintainable, well-documented code that follows established engineering standards.
Review pull requests with attention to performance, security, reliability, and long-term maintainability.
Identify and reduce technical debt in core systems.

Database & Performance Management

Design, optimize, and maintain database queries, schemas, and data access patterns.
Monitor and improve the performance of SQL databases, Redis, background jobs, and other back-end services.
Investigate bottlenecks, failed jobs, production errors, and performance spikes.
Support reliable data processing and system availability across the platform.

Infrastructure & Dependency Management

Maintain and update back-end dependencies, software packages, server components, and plugins.
Support cloud infrastructure and services, including AWS EC2 and RDS.
Monitor server environments, resource usage, and application health.
Contribute to secure and reliable deployment practices.

Quality Assurance & Testing

Write comprehensive tests for new back-end code, including unit, integration, and regression tests where appropriate.
Support debugging and root-cause analysis for production issues.
Improve error handling, logging, monitoring, and alerting.
Ensure back-end changes are delivered with a strong focus on stability and reliability.

Continuous Integration/Continuous Deployment (CI/CD)

Create, update, and review Pull Requests (PRs).
Support smooth deployment processes using CI/CD best practices.
Help maintain reliable release processes and reduce deployment risk.
Collaborate with the development team to improve build, test, and deployment workflows.

Collaboration & Technical Planning

Work with the Lead Developer, Technical Project Manager, product team, and other developers to clarify requirements and define technical solutions.
Break down technical work into clear, manageable tasks.
Communicate trade-offs, risks, dependencies, and implementation options clearly.
Proactively suggest technical improvements that strengthen the platform.

Competencies

Back-End Engineering: Strong ability to design, build, and maintain robust server-side systems.
System Reliability: Focused on uptime, stability, monitoring, and production readiness.
Database Expertise: Skilled at working with SQL databases, query optimization, and data integrity.
Problem-Solving: Able to diagnose complex technical issues and resolve them efficiently.
Code Quality: Committed to clean, testable, maintainable code and thoughtful peer review.
Security Awareness: Understands secure coding practices and infrastructure considerations.
Communication: Able to explain technical issues, risks, and solutions clearly to technical and non-technical colleagues.
Adaptability: Comfortable learning new tools, frameworks, and technologies as platform needs evolve.
Teamwork: Works collaboratively with developers, product, and project stakeholders to achieve shared goals.

Job Qualifications

Bachelor’s degree in Computer Science, Software Engineering, or equivalent experience
Minimum of 8+ years of professional software development experience, with significant back-end development responsibility
Strong proficiency in PHP and server-side application development
Experience with JavaScript, HTML, and Frontend framworks, sufficient to collaborate effectively with front-end development work
Experience with server management: Ubuntu, Nginx, SQL, Redis
Experience managing AWS infrastructure and services, including EC2 and RDS
Experience designing, building, and maintaining APIs and integrations
Strong experience with testing, debugging, performance optimization, and production support
Experience using project management and development tools, such as Jira, GitHub, or Linear
Based in the Greater Toronto Area

Key Performance Indicators (KPIs)

Back-End Delivery: Number and quality of back-end features, services, APIs, and improvements delivered within planned timeframes.
System Stability: Reduction in production bugs, failed jobs, downtime, and recurring technical issues.
Bug Resolution Time: Average time taken to identify, address, and resolve back-end defects.
Code Quality: Frequency of critical issues found in code after deployment.
Performance Improvements: Measurable improvements in application speed, query efficiency, background job reliability, or infrastructure utilization.
Pull Request Cycle Time: Time from PR creation to merge, indicating efficiency in development and review processes.
Deployment Reliability: Frequency of successful deployments and reduction in deployment-related incidents.
Technical Debt Reduction: Progress on refactoring, dependency updates, and maintainability improvements.

What Success Looks Like

30 Days

Complete architecture and codebase onboarding across core PHP services, databases, and AWS environments.
Ship first bug fixes and minor backend feature PRs through standard CI/CD and review workflows.
Establish smooth collaboration rhythms with the Lead Developer, TPM, and frontend team.

60 Days

Independently build, test, and deploy new backend features and APIs aligned with product roadmap priorities.
Optimize database queries, Redis caching, or background job performance to resolve bottlenecks.
Actively review peer PRs and expand automated unit and integration test coverage.

90 Days

Own end-to-end technical delivery of complex backend epics from architectural planning to production release.
Drive platform reliability, technical debt reduction, and AWS infrastructure maintenance (EC2/RDS).
Ensure high deployment reliability, low PR cycle times, and proactive error monitoring.

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More about this job

Responsibilities

Design, build, and maintain reliable back-end services, APIs, integrations, and database systems, while improving platform performance, security, and maintainability. Support AWS infrastructure, testing, monitoring, and deployment reliability, and collaborate with developers and product stakeholders to deliver technical solutions.

Requirements

Requires a bachelor’s degree in Computer Science, Software Engineering, or equivalent experience, plus at least 8 years of professional software development experience with significant back-end responsibility. Candidates should have strong PHP skills, experience with APIs, SQL, Redis, AWS EC2 and RDS, server management, testing, debugging, and performance optimization, and be based in the Greater Toronto Area.

Skills

PHP
Back-End Development
API Development
JavaScript
HTML
SQL
Redis
AWS
Ubuntu
Nginx
Database Optimization
Testing
Debugging
Performance Optimization
CI/CD
Production Support

Visa sponsorship

Not detected in the job text

Keywords

PHP
JavaScript
HTML
SQL
Redis
AWS
AWS EC2
AWS RDS
Ubuntu
Nginx
Back-End Development
Server-Side Architecture
APIs
Integrations
Database Schemas
Query Optimization
Background Jobs
Cloud Infrastructure
Unit Testing
Integration Testing
Regression Testing
CI/CD
GitHub
Jira
Linear
Pull Requests
Monitoring
Logging
Error Handling
Production Support

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