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Added 6 mins ago
T
Oracle / PostgreSQL Database Administrator
TD
Mississauga, ON · Toronto, ON
- Full-time
The Oracle/PostgreSQL Database Administrator is responsible for the administration, reliability, security, recoverability, and performance of mission-critical database platforms supporting…
Added 49 mins ago
T
Oracle / PostgreSQL Database Administrator
TD
Mississauga, ON
- Full-time
The Oracle/PostgreSQL Database Administrator is responsible for the administration, reliability, security, recoverability, and performance of mission-critical database platforms supporting…
Added 50 mins ago
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Manager, Data Engineering
Avanade
Toronto, ON
- Full-time
Have the ability to translate complex technical concepts and solutions and present them in fit for audience language and value-based outcomes, to senior business stakeholders, technology…
Added 51 mins ago
R
Data Engineering Manager
Relay
Remote, Canada
- $207,000 to $253,000 CAD / year
- Full-time
- Remote
Relay's data engineering team has tripled in size, from 4 to 12, and is now splitting into two teams. Analytics Data Engineering works close to the business, building the models, pipelines…
Added 1 hour ago
Manager, Software Development (Vehicle Services)
PayByPhone
Vancouver, BC
Together, we’re on an ambitious mission to create intuitive technology solutions that deliver world-class user experiences. We are a fast-growing, forward-thinking company and already help…
Added 1 hour ago
RA
Senior Product Manager - Rewards Strategy, Loyalty & SSO Integrations
Recrute Action
Toronto, ON
- Contract
Define integration and rewards architecture patterns: Partner with Engineering, Architecture, Security, and Data to establish reusable patterns for SSO, identity federation, and reward…
Added 2 hours ago
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Managing Director, Head of Financial Engineering
BMO
Toronto, ON · FCP
- Full-time
The incumbent will lead a team of quantitative, analytics and engineering professionals while acting as a senior advisor to business leaders on data, analytics, investment technology and…
Added 2 hours ago
Senior Manager, Development
Scotiabank
Toronto, ON
The Senior Manager, Development – Data Engineering will provide strategic and hands‑on leadership within Scotiabank’s Data & AI Technology team. This role is accountable for leading and…
Added 4 hours ago
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Senior Implementation Consultant
Nakisa
Montreal, QC
- Full-time
Bridging the gap between enterprise technology and real business outcomes, you will lead clients from SOW signoff on scoped deliverables through to go-live, serving as their trusted senior…
Added 4 hours ago
K
Staff Technical Program Manager
Kaseya
Vancouver, BC
- Full-time
This is a senior individual contributor role focused on driving execution across data engineering, ML engineering, and applied AI teams - improving delivery predictability, managing complex…
Added 4 hours ago
M
Network Engineer
Moneris
Toronto, ON
- Full-time
Moneris is seeking a highly skilled Network Engineer to design, implement, automate, and support the enterprise network infrastructure that powers our business and payment processing…
Added 5 hours ago
RS
Principal Software Engineer- RMJ (AI Accelerated)
Redwood Software
ON
- $150,000 to $170,000 CAD / year
You will work directly with the Engineering manager for your teams and collaborate closely with Redwood’s Architecture team to ensure technical alignment, consistency, and strategic…
Added 5 hours ago
Staff Technical Program Manager
Kaseya Careers
Vancouver, BC
This is a senior individual contributor role focused on driving execution across data engineering, ML engineering, and applied AI teams - improving delivery predictability, managing complex…
Added 6 hours 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 6 hours ago
I
Senior Systems Engineer
illumin
Toronto, ON · Greater Toronto Area, Canada
- $100,000 to $150,000 CAD / year
- Full-time
We are hiring a Senior Systems Engineer to join our Infrastructure & Operations team. This is a senior, hands-on infrastructure role focused on Linux systems, virtualization, physical and…
Added 7 hours ago
O
Senior Project Manager
OnX
Toronto, ON
- Full-time
…require - spanning AI & Data Strategy, AI Infrastructure, Data Engineering & Architecture, Analytics & Business Intelligence, and Data Governance & Management. On the Cloud side, OnX…
Added 7 hours ago
T
Senior Mainframe Engineer, TD Securities
TD
Toronto, ON
- Full-time
We are looking for someone armed with a strong tool-kit to develop and maintain technical solutions that adhere to engineering and architectural design principles while meeting business…
Added 7 hours ago
Salesforce Technical Architect - Financial Services Cloud, Marketing Cloud & Data360 - Manager
EY
Toronto, ON · Montreal, QC
We're looking for a senior, hands-on technical architect - someone with deep Financial Services Cloud implementation experience who still configures, codes, and builds, not just designs on…
Added 8 hours ago
IC
Product Manager, Rewards Strategy & Partnership
Infotek Consulting Inc.
Toronto, ON
- $60 to $70 CAD / hour
- Contract
Partner with Engineering, Architecture, Security, and Data teams to establish reusable patterns for SSO, identity federation, and reward fulfillment.
Added 8 hours ago
Principal Network Engineer
Hasbro
Montreal, QC
…the highest-level individual contributor role on the Network Engineering team. You will design the Zero Trust Network Access framework, manage our Palo Alto Panorama environment, and make…
Added 12 hours ago
TI
Technology Risk Lead - Cybersecurity
Themesoft Inc.
Toronto, ON
- Contract
Build strong relationships with engineering leaders, product owners, architects, and delivery teams.
Added 13 hours ago
YR
Enterprise Cloud Architect (Enterprise Architect)
York Region (The Regional Municipality of York)
Newmarket, ON
- Full-time
Reporting to the ITS Projects Manager or designate within Information Technology Services, the Enterprise Cloud Architect serves as the cloud domain architect within the Enterprise…
Added 14 hours ago
WR
Project Manager, ICAT - Redevelopment (Full Time)
Windsor Regional Hospital
Windsor, ON
- Full-time
The purpose of this position is to provide the Hospital with a senior project manager that can coordinate Information, Communication, and Automation Technology (ICAT) planning, design,…
Added 19 hours ago
MT
Senior Azure engineer
Manx Telecom Enterprise
Permanent North American Gaeltacht, ON
- Full-time
A strong focus on collaboration and continuous improvement is key. The Senior Azure Engineer will work with colleagues across engineering, security, and service teams to implement best…
Added 20 hours ago
CS
Co-op: IT and Engineering
Canadian Security Intelligence Service (CSIS) | Service canadien du renseignement de sécurité (SCRS)
Ottawa, ON
- Volunteer
…challenges in a unique environment. If you are up for the challenge and want to join one of our highest performing teams, there is no doubt that your contributions to CSIS will provide a…

Off2Class

Senior Backend Developer

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

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Apr 6, 2027
Experience: Minimum of 8+ years of professional software development experience, with significant back-end development responsibility
Posting language: English
Posted: Oct 8, 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 performance, security, code quality, and platform reliability. Collaborate with technical and product stakeholders to plan and deliver features, support AWS infrastructure, test and deploy changes, and diagnose production issues.

Requirements

Requires at least eight years of professional software development experience with significant back-end responsibility, strong PHP skills, and experience with APIs, SQL, Redis, Ubuntu, Nginx, and AWS EC2 and RDS. A bachelor's degree in Computer Science or Software Engineering, or equivalent experience, is required; candidates should also have experience with JavaScript, HTML, testing, debugging, performance optimization, production support, and development tools such as Jira, GitHub, or Linear.

Skills

PHP
Back-End Development
API Development
SQL
Redis
AWS
Amazon EC2
Amazon RDS
Ubuntu
Nginx
JavaScript
HTML
Database Optimization
Automated Testing
CI/CD
Production Support

Visa sponsorship

Not detected in the job text

Keywords

PHP
JavaScript
HTML
APIs
SQL
Redis
Ubuntu
Nginx
AWS
Amazon EC2
Amazon RDS
Back-End Architecture
Server-Side Development
Database Optimization
Integrations
Background Jobs
Automated Testing
Unit Testing
Integration Testing
Regression Testing
CI/CD
Pull Requests
Production Support
Performance Optimization
Monitoring
Logging
Alerting
Security
Jira
GitHub

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