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Added 23 mins ago
SO
Senior Software Engineer, Dentrix Ascend
Software of Excellence
Surrey, BC
- Full-time
Our Dentrix Ascend engineering team contributes to the development of Dentrix Ascend, our cloud-based practice management platform used by dental practices across the United States.…
Added 24 mins ago
T
Sr, Mainframe Engineer, TD Securities
TD
Toronto, ON
- Full-time
TD Securities Payments Workflow Technology team is looking for a senior mainframe developer to implement solutions in alignment with the firm’s technology strategy. The team is responsible…
Added 38 mins ago
HS
Senior Software Engineer
Henry Schein One Canada
Surrey, BC
- Full-time
Our Dentrix Ascend engineering team contributes to the development of Dentrix Ascend, our cloud-based practice management platform used by dental practices across the United States.…
Added 39 mins ago
Technology Consulting - Corporate, Commercial
EY
Toronto, ON · Montreal, QC
Our team is looking for exceptional, driven, and passionate professionals Managers/Senior Managers, with an entrepreneurial mindset and a strong interest in technology-enabled…
Added 1 hour ago
ES
Senior Site Reliability Engineer – AEM
Epsilon Solutions Ltd.
Toronto, ON
- Full-time
Senior Site Reliability Engineer – Adobe Experience Manager (AEM), CDN and Edge Delivery
Added 1 hour ago
HS
Senior Java Software Engineer
Henry Schein One Canada
Surrey, BC
- $130,000 to $142,000 CAD / year
- Full-time
Our Dentrix Ascend engineering team contributes to the development of Dentrix Ascend, our cloud-based practice management platform used by dental practices across the United States.…
Added 1 hour ago
P
Senior Product Manager, Fund Management
Purpose
Toronto, ON
- Full-time
As Sr. Product Manager, Fund Management, you will own the product vision, roadmap, and delivery for this squad. You will collaborate with other teams to decide what gets built and in what…
Added 2 hours ago
NS
Senior Site Reliability Engineer (SRE) – CDN & Web Performance
N2P Systems
Toronto, ON
- Full-time
We are seeking a Senior Site Reliability Engineer (SRE) to help build and operate a modern, public-facing enterprise web platform delivered through Adobe Experience Manager (AEM) Edge…
Added 2 hours ago
T
Oracle / PostgreSQL Database Administrator
TD
Mississauga, ON · Toronto, ON
- Full-time
Act as a senior escalation point for Severity 1, Severity 2, and high-impact production incidents.
Added 2 hours ago
T
Oracle / PostgreSQL Database Administrator
TD
Mississauga, ON
- Full-time
Act as a senior escalation point for Severity 1, Severity 2, and high-impact production incidents.
Added 2 hours ago
L
Senior Patent & IP Counsel
Lyten
Burlington, ON
- Full-time
…battery, concrete, composites, and sensors. This is both a manager and a practitioner role: Lyten is looking for someone who will personally do some of the work of protecting its IP, not…
Added 2 hours ago
A
Manager, Data Engineering
Avanade
Toronto, ON
- Full-time
…architectural forums attended by multi-disciplined stakeholders from engineering to senior ("C level") client…
Added 2 hours 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 3 hours ago
Manager, Software Development (Vehicle Services)
PayByPhone
Vancouver, BC
As a Manager, Software Development at PayByPhone, your primary focus is leading and supporting your team of creators to deliver a world-class experience based on our PayByPhone platform.…
Added 3 hours ago
LA
Lead Solution Architect
Legislative Assembly of Ontario / Assemblée législative de l’Ontario
Toronto, ON
- Full-time
…Branch. As a valued member of our team, reporting directly to the Manager, Digital Solutions, you will collaborate closely with a dynamic group of developers, and with stakeholders across…
Added 3 hours ago
E
iOS Engineer - SE3
eBay
Toronto, ON
- Full-time
At eBay, we're more than a global ecommerce leader - we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around…
Added 3 hours ago
MH
Implementations Manager
MedMe Health
Toronto, ON
- $105,000 to $145,000 CAD / year
- Full-time
…organizations in North America. We’re hiring a Implementation Manager to lead these enterprise rollouts and establish how we deliver them as we…
Added 3 hours ago
Senior Customer Success Manager (Transformation Advisor), Independent Software Vendor (ISV)
Amazon
Toronto, ON
…company understand the business case for migrating their core platform to AWS, facilitate an alignment session between an ISV's engineering team and AWS Solutions Architecture, or work with…
Added 4 hours ago
AS
Director of Engineering
Acara Solutions, An Aleron Company
Cambridge, ON
- Full-time
Reporting directly to the Vice President / General Manager and sitting on the leadership team, this individual will have overall accountability for engineering, design, estimating,…
Added 4 hours ago
TI
Construction Field Inspector
telMAX Inc.
Markham, ON
- $65,000 to $75,000 CAD / year
- Full-time
Track and validate fieldwork performance with the Senior Construction Manager and Project Manager, ensuring contractor performance meets forecasts.
Added 4 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 6 hours ago
N
Senior Implementation Consultant
Nakisa
Montreal, QC
- Full-time
…Financial Management, and Commercial Real Estate (CRE). Our cloud platform powers mission-critical operations for 1,100+ organizations in 135 countries and serves millions of…
Added 6 hours ago
K
Staff Technical Program Manager
Kaseya
Vancouver, BC
- Full-time
We are seeking an experienced Staff Technical Program Manager to lead large-scale, cross-functional programs across Kaseya's Data and AI Platform organization.
Added 6 hours ago
T
Data Scientist II
TD
Toronto, ON
- Full-time
Generally, reports to a Senior / Manager role.
Added 6 hours ago
A
Senior Product Manager, Robot Platforms
Avidbots
Kitchener, ON
- Full-time
We are seeking an experienced Senior Product Manager to work alongside management on the roadmap for the Avidbots cleaning robot platforms - Neo, Neo 2W, and Kas. You will report directly…

Off2Class

Senior Backend Developer

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

Full-time

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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.

Apply About employer

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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