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Senior Backend Software Engineer Jobs in London, ON

Voices

Senior Software Engineer

London, ON · Hybrid

Senior Software Engineer Location: Ontario (Hybrid - See "Hybrid Work Details" section below for more information) Position Type: Full-Time Vacancy Status: This posting is for an existing vacancy.

Voices

Senior Software Engineer

London, ON · Hybrid

Senior Software Engineer Location: Ontario (Hybrid - See "Hybrid Work Details" section below for more information) Position Type: Full-Time Vacancy Status: This posting is for an existing vacancy.

Voices

Senior Software Engineer

London, ON · Hybrid

Senior Software Engineer Location: Ontario (Hybrid - See "Hybrid Work Details" section below for more information) Position Type: Full-Time Vacancy Status: This posting is for an existing vacancy.

Digital Extremes

Software Engineer II, Web

London, ON · On-site

CA$80K - CA$95K/yr

ABOUT THIS POSITION The Software Engineer II, Web will have a passion for creating innovative and ... Backend, API & Performance * Design, build, and optimize RESTful APIs and backend services in PHP ...

CARFAX

Senior Software Engineer - Dev Ops

London, ON · On-site

Join Team CARFAX as a Senior Software Engineer - Dev Ops We are looking for a seasoned Senior Software Engineer - Dev Ops to join our platform team and take an active role in designing, scaling, and ...

Td

Software Engineer II

London, ON · On-site

CA$81K - CA$115K/yr

Generally reports to a Senior Manager, Engineering. Qualifications & Technical Requirements * Strong software engineering fundamentals across backend services, APIs, data modelling, testing and ...

CARFAX

Senior Software Engineer - Dev Ops

London, ON

Join Team CARFAX as a Senior Software Engineer - Dev Ops We are looking for a seasoned Senior Software Engineer - Dev Ops to join our platform team and take an active role in designing, scaling, and ...

CARFAX

Senior Software Engineer - Dev Ops

London, ON · On-site

Join Team CARFAX as a Senior Software Engineer - Dev Ops We are looking for a seasoned Senior Software Engineer - Dev Ops to join our platform team and take an active role in designing, scaling, and ...

Proton

Senior Rust Engineer - Proton Drive

London, ON · On-site

We ensure that cross-client and backend initiatives are executed with consistency and correctness ... In Computer Science, Software Engineering, or a related field. Bonus points for: * Mobile ...

Td

Senior Software Engineer (Mainframe)

London, ON · On-site

CA$81K - CA$115K/yr

Adhere to enterprise engineering frameworks, software development methodologies, release processes, and control standards applicable to mainframe development and delivery. * Actively identify and ...

Proax Technologies Ltd

Software Developer

London, ON

... Software Developer will use their knowledge to design, create, implement, and maintain software ... website backend (Windows/Linux, Apache, PHP, Docker) * Preparing e-commerce website data (MySQL ...

Proax Technologies

Software Developer

London, ON · On-site

... Software Developer will use their knowledge to design, create, implement, and maintain software ... website backend (Windows/Linux, Apache, PHP, Docker) * Preparing e-commerce website data (MySQL ...

Proton

Senior Foundation Engineer (Drive)

London, ON · On-site

Work closely with backend, frontend, mobile and desktop developers to integrate core libraries ... Job requirements: * 5+ years of professional software development experience, with a focus on the ...

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All JobsBackend Software Engineer JobsSenior Backend Software Engineer JobsSenior Backend Software Engineer Jobs in London, ON

Senior Backend Software Engineer information

See London, ON salary details

$74.2K

$123.1K

$164.4K

How much do senior backend software engineer jobs pay per year?

As of Aug 28, 2026, the average yearly pay for senior backend software engineer in London, ON is $123,058.00, according to ZipRecruiter salary data. Most workers in this role earn between $106,169.00 and $138,106.00 per year, depending on experience, location, and employer.

What is a senior backend software engineer?

Senior Backend Software Engineers are experienced professionals responsible for designing, developing, and maintaining the server-side logic, databases, and APIs that power web and software applications. They work closely with front-end developers, product managers, and other team members to ensure robust, scalable, and secure systems. In addition to coding, they often mentor junior engineers, conduct code reviews, and help shape the architecture and technical direction of projects. Their expertise enables businesses to handle high volumes of data, users, and complex business logic efficiently.

How does a senior backend software engineer typically collaborate with frontend teams and other stakeholders during the development process?

Senior Backend Software Engineers frequently work closely with frontend developers, product managers, and sometimes UX designers to ensure seamless integration between server-side logic and user-facing features. This collaboration often involves participating in planning meetings, discussing API contracts, and reviewing architectural decisions to ensure scalability and performance. Clear communication and regular sync-ups are essential, as backend engineers need to translate business requirements into robust technical solutions while addressing any integration challenges that arise.

What are the key skills and qualifications needed to thrive as a senior backend software engineer, and why are they important?

To thrive as a Senior Backend Software Engineer, you need advanced programming skills (such as Python, Java, or Go), a deep understanding of system architecture, and a relevant degree or equivalent experience. Familiarity with databases, cloud platforms (like AWS or Azure), containerization tools (Docker, Kubernetes), and CI/CD pipelines is typically required, along with knowledge of best practices in API design and security. Exceptional problem-solving abilities, strong communication, and leadership skills help you effectively collaborate and mentor junior engineers. These competencies are crucial for building robust, scalable systems and ensuring the technical success of complex projects.

What is the difference between Senior Backend Software Engineer vs Backend Developer?

AspectSenior Backend Software EngineerBackend Developer
Required CredentialsBachelor's degree in CS or related field; experience with cloud platformsBachelor's degree or equivalent; proficiency in backend languages
Work EnvironmentCollaborates on complex systems, mentors junior staffDevelops and maintains backend features, less mentorship
Industry UsageCommon in tech companies, startups, enterprise firmsWidely used across various industries, including e-commerce and SaaS
Search & Comparison IntentOften searched for career progression, senior rolesTypically searched for entry to mid-level roles

The main difference between a Senior Backend Software Engineer and a Backend Developer lies in experience, responsibilities, and scope. Senior engineers handle complex systems, mentor teams, and contribute to architecture, while backend developers focus on coding and maintaining backend features. Both roles require strong technical skills, but senior roles demand more leadership and strategic input.

What cities near London, ON are hiring for Senior Backend Software Engineer jobs?

Cities near London, ON with the most Senior Backend Software Engineer job openings:

Infographic showing various Senior Backend Software Engineer job openings in London, ON as of August 2026, with employment types broken down into 1% Internship, 83% Full Time, 12% Part Time, and 4% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $123,058 per year, or $59.2 per hour.

Senior Backend Developer | Agency | Hybrid or remote ON | $100-110K

London, ON • On-site, Remote

White Bay
See more jobs at White Bayexternal

Full-time

Posted 2 days ago

New

Job description

The Company


An established and forward-thinking digital agency is seeking a Senior Backend Developer to join its growing team in London, Ontario. Known for delivering enterprise-grade digital solutions for mid-market and enterprise organizations, this innovative firm combines strategy, technology, and creativity to build high-performing web applications and marketing technology platforms. Collaboration, continuous learning, and emerging technologies—including AI-powered development workflows—are at the heart of its culture.


The Role


This is an opportunity for an experienced backend developer to lead the design, development, and delivery of scalable web applications and integrations. Working alongside designers, UX specialists, product owners, and fellow developers, the successful candidate will build robust PHP-based solutions, architect API-driven systems, mentor team members, and help shape development best practices. This role also embraces AI and automation to improve efficiency while maintaining accountability for code quality and technical excellence.


Responsibilities


  • Design, develop, maintain, and optimize enterprise web applications using PHP and CMS platforms such as WordPress.
  • Build and integrate REST, GraphQL, SOAP, and webhook-based APIs.
  • Develop headless CMS and API-first architectures.
  • Write clean, reusable, well-tested code that meets established quality standards.
  • Utilize AI and automation tools to improve development workflows and accelerate delivery.
  • Collaborate with cross-functional teams to deliver innovative digital solutions.
  • Provide technical leadership, mentorship, and architectural guidance to developers.
  • Troubleshoot complex technical challenges and recommend scalable solutions.
  • Identify project risks, communicate progress, and contribute to Agile Scrum ceremonies.
  • Champion continuous improvement across development processes and best practices.


Requirements


  • 6+ years of professional PHP development experience.
  • 4+ years designing API-driven and headless CMS solutions.
  • Strong experience with REST, GraphQL, SOAP, web services, and system integrations.
  • Advanced knowledge of MySQL and database optimization.
  • Experience architecting scalable software solutions and integration patterns.
  • Proficiency with Laravel, Symfony, CodeIgniter, or similar PHP frameworks.
  • Experience with Git, unit testing, CI practices, and Agile development.
  • Strong understanding of AI-assisted development, automation tools, and workflow platforms.
  • Knowledge of web security, WCAG standards, and modern software design principles.
  • University degree or college diploma in Software Development, Computer Science, Engineering, or a related discipline.



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