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Added 4 mins ago
LC
Ingénieur senior (Gestionnaire, projet ingénierie)
Lactalis Canada
Granby, QC
- Full-time
The Project Manager is responsible for the planning, design, execution, and completion of projects within strict timelines, while ensuring budget compliance and delivering technically sound…
Added 4 mins ago
CI
Proposal Specialist
Calian in Space & Technology
Ottawa, ON
- Full-time
Acts as back-up to the Director Proposals / Senior Proposal Manager in assigning proposal development responsibilities
Added 4 mins ago
P&
Gestionnaire principal, stratégies de tarification et transactions / Senior Manager, Pricing & Lifecycle Strategy
Pratt & Whitney
Longueuil, QC
- Full-time
Added 4 mins ago
AC
Senior Programme Manager- Electrification
Accenture Construct
Toronto, ON
- Full-time
The Senior Programme Manager – Electrification is responsible for the overall leadership, planning and successful delivery of complex railway electrification programmes, including Overhead…
Added 5 mins ago
HC
Research And Development Manager
Highbury Canco Corporation
Leamington, ON
- $97,000 to $115,000 CAD / year
- Full-time
The R&D Manager will work closely with Operations, Quality Assurance, Procurement, Marketing, and Engineering to successfully bring new products from concept through commercialization and…
Added 18 mins ago
BI
Bilingual Food Service Manager
Bento Inc.
Saint-Bruno-de-Montarville, QC · St-Bruno-de-Montarville, QC
- $50,000 CAD / year
- Full-time
BILINGUAL FOOD SERVICE MANAGER / STORE MANAGER
Added 19 mins ago
CG
Proposal Specialist
Calian Group
Ottawa, ON
- Full-time
Acts as back-up to the Director Proposals / Senior Proposal Manager in assigning proposal development responsibilities
Added 22 mins ago
Senior Project Manager - Vancouver
Bronswerk Group & Affiliates
North Vancouver, BC
We are seeking a Senior Site Project Manager to lead our Vancouver shipyard team: a local team of production engineers and Installation Managers/Supervisors who lead an installation team of…
Added 22 mins ago
Manager, Software Development (Vehicle Services)
PayByPhone
Vancouver, BC
Reports to: Senior Director, Application Development
Added 36 mins ago
T
Senior Manager, Operational Resiliency Advisor
TD
Toronto, ON
- Full-time
…providing insights while providing quality, portfolio aligned assurance oversight and guidance to executive management, governance and control teams. This includes providing visibility into…
Added 50 mins ago
AC
Senior Manager Global Internal Audit and Internal Controls
Alimentation Couche-Tard
Laval, QC
- Internship
Experience leading or managing SOX/ICOFR compliance programs within a large publicly listed organization or Big 4 public-company assurance practice
Added 50 mins ago
ZC
Automation Engineer
Zurich Canada
Toronto, ON
- Full-time
Reporting to the IT Manager, you will contribute to the development and automation of Guidewire InsuranceSuite applications while building your expertise in Guidewire technologies,…
Added 50 mins ago
OD
Manager, Governance, Risk & Audit
Ontario Dig Authority
Guelph, ON
- Full-time
Provide independent assurance to senior management and the Board regarding organizational control effectiveness.
Added 52 mins ago
Corporate Accountant | Great West
The Canada Life Assurance Company
Winnipeg, MB · London, ON · Toronto, ON
Meaningful work: Contribute to financial reporting that is used by investors, analysts, regulators, and senior leaders.
Added 1 hour 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 1 hour ago
Project Manager
Odlum Brown
Vancouver, BC
We have an opportunity for a Project Manager to join our award-winning firm in the Vancouver office.
Added 1 hour ago
OH
Lead, Performance Management
Ontario Health
Toronto, ON
- Full-time
…public, hospital, and community laboratories. Reporting to the Manager, Performance Management & Analytics, you will turn complex health data into clear insights that strengthen laboratory…
Added 1 hour ago
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Senior FCRM Testing Analyst - PCT Validations (5325)
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Toronto, ON
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Added 2 hours ago
Manager, Clinical
Bayshore
Thunder Bay, ON
As Clinical Manager, you will work closely with the Senior Manager and Clinical Director to ensure clinical excellence across all NRIO programs. You’ll oversee client care, staff…
Added 2 hours ago
I
Senior Manager, Information Security & IT
illumin
Toronto, ON
- Full-time
Reporting to the CITO, we are hiring a Senior Manager, Information Security & IT to lead information security across illumin while providing leadership to our corporate IT function. As our…
Added 2 hours ago
T
Solutions Design IT Specialist
TD
Toronto, ON
- Full-time
Typically reports to a Senior Manager or above
Added 2 hours ago
Nuclear Construction Project Manager
Kiewit
Oakville, ON · Oshawa, ON · ON · Darlington, ON
Reporting to the Area Manager, you will be responsible for leading the planning, coordination, and execution of construction activities, ensuring work is completed safely, on schedule,…
Added 2 hours ago
R
Gestionnaire de programme senior, Stratégie commerciale des nouveaux produits | Senior Program Manager, New Product Commercial Strategy
RTX
Longueuil, QC
- Full-time
Added 2 hours ago
Senior Manager, Deal Technology: M&A IT (Calgary)
EY
AB · Calgary, AB
Competitive business today is all about making intelligent, informed decisions. As a Deal Technology Senior Manager within EY-Parthenon you will help make that happen. You will be an…
Added 2 hours ago
Senior Geotechnical Engineer / Lead Inspector
Mott MacDonald
Toronto, ON
We are excited to be looking for a talented, motivated, and experienced Senior Geotechnical Field Engineer/Inspector (Construction Support) to support an iconic construction project in…

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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