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Senior Software Developer Jobs in London, ON (NOW HIRING)

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.

Voices

Senior Software Engineer

London, ON · On-site

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.

ZTR LLC

Senior Embedded Software Developer

London, ON · On-site

Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in at least one programming language used in embedded computing (Python, Go, Rust, C++, C, Java or JavaScript)

Proax Technologies

Software Developer

London, ON · On-site

Work with collaborative team members in the automation industry General Description Software Developer will use their knowledge to design, create, implement, and maintain software, applications, and ...

Proax Technologies Ltd

Software Developer

London, ON

Work with collaborative team members in the automation industry General Description Software Developer will use their knowledge to design, create, implement, and maintain software, applications, and ...

Fastbreak AI

Senior Software Engineer

London, ON · On-site

As a Senior Full Stack Engineer, you'll design and ship high-performance web applications across our React/Next.js frontend and Node.js/Express backend with real autonomy. You'll make architectural ...

New

Wabtec

Software Developer

London, ON · On-site

Bachelor's degree in software engineering, Computer Science, Information Technology or a closely related field * Minimum 5 years professional experience with the C programming language * Demonstrable ...

Fastbreak AI

Senior Software Engineer

London, ON

As a Senior Full Stack Engineer, you'll design and ship high-performance web applications across our React/Next.js frontend and Node.js/Express backend with real autonomy. You'll make architectural ...

Wabtec

Software Developer

London, ON

Bachelor's degree in software engineering, Computer Science, Information Technology or a closely related field * Minimum 5 years of professional experience with cloud computing platforms and systems ...

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 ... AI Developer Platform - Own and contribute to the architecture and operations of interactive ...

ZTR

Senior Embedded Software Developer

London, ON

Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in at least one programming language used in embedded computing (Python, Go, Rust, C++, C, Java or JavaScript)

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All JobsSoftware Developer JobsSenior Software Developer JobsSenior Software Developer Jobs in London, ON

Senior Software Developer information

See London, ON salary details

$45.3K

$99K

$140.3K

How much do senior software developer jobs pay per year?

As of Sep 14, 2026, the average yearly pay for senior software developer in London, ON is $99,044.00, according to ZipRecruiter salary data. Most workers in this role earn between $82,000.00 and $112,211.00 per year, depending on experience, location, and employer.

What is a senior software developer?

Senior Software Developers are experienced professionals who design, develop, and maintain complex software applications. They often lead development teams, mentor junior developers, and make critical architectural decisions. Their responsibilities include writing high-quality code, troubleshooting technical issues, and ensuring that software projects meet performance and security standards. With deep expertise in programming languages and software engineering principles, they play a key role in delivering successful technology solutions for organizations.

What does a senior software developer do?

As a Senior Software Developer, you’ll typically be responsible for leading complex development projects, designing technical solutions, and mentoring junior team members. Daily tasks often include writing and reviewing code, participating in architecture discussions, collaborating with cross-functional teams (such as QA, product management, and DevOps), and troubleshooting high-level technical issues. You may also be involved in setting coding standards, conducting code reviews, and helping to plan sprints or project roadmaps.

What skills and qualifications are needed to thrive as a senior software developer?

To thrive as a Senior Software Developer, you need deep expertise in programming languages, software architecture, and problem-solving, typically backed by a bachelor’s degree in computer science or a related field. Proficiency with development frameworks, version control systems like Git, and cloud platforms such as AWS or Azure is standard, and certifications in these areas can be beneficial. Leadership, strong communication, and mentoring abilities set standout candidates apart in this role. These skills ensure that complex projects are delivered efficiently, code quality is maintained, and junior team members are effectively guided for overall team success.

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

AspectSenior Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's or higher in CS or related field; similar experience levels
Work EnvironmentCollaborates on complex projects, mentors juniors, leads technical effortsDesigns, develops, tests software; may work on specific modules or systems
Industry UsageCommonly used in tech companies, startups, and enterprise firmsWidely used across industries, often interchangeable with developer roles

The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

More about Senior Software Developer jobs

What are the most commonly searched types of Software Developer jobs in London, ON?

The most popular types of Software Developer jobs in London, ON are:

What are popular job titles related to Senior Software Developer jobs in London, ON?

For Senior Software Developer jobs in London, ON, the most frequently searched job titles are:

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

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

Senior Software Developer jobs near you
Infographic showing various Senior Software Developer job openings in London, ON as of August 2026, with employment types broken down into 81% Full Time, 16% Part Time, and 3% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $99,044 per year, or $47.6 per hour.

Senior Software Engineer

London, ON • Hybrid

Voices
See more jobs at Voicesexternal

Full-time

Re-posted 12 days ago

Job description

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.
 
About Us
Voices is the trusted voice partner for brands, tech and voice talent. Voices helps scale real voice solutions, across traditional voiceover, Voice AI, and ethically sourced voice data. For more than two decades, the biggest and most beloved brands have trusted Voices to find their voices and bring their projects to life.
 
Why join us? We’re on a mission to shape the future of voice, and we’re building a team that’s curious, collaborative, and passionate about making great ideas heard.
 
About the Role  
As a Senior Software Engineer, you’ll join a high-performing development organization working in cross-functional teams to design, build, and evolve modern full-stack systems that power critical workflows for our customers and internal teams. In this role, you’ll take ownership of complex technical initiatives and contribute to system architecture and design decisions within a modern cloud-based environment, helping ensure our platform remains scalable, reliable, and maintainable as it grows. You’ll apply strong full-stack engineering expertise to solve complex technical problems and deliver solutions that balance immediate business needs with long-term technical sustainability.
 
We value thoughtful engineering, steady delivery, and continuous improvement. You’ll collaborate closely with Product, Infrastructure, QA, and Support to ensure solutions are technically sound and aligned with business goals, while proactively identifying opportunities to improve architecture, tooling, and development practices. You’ll report to the Senior Manager, Application Development and be part of a team that values high standards, ownership, and pragmatic problem solving.
 
Responsibilities  
In this role, you’ll take ownership of the following key areas:
 
Application & System Development
  • Design, build, and evolve customer-facing and internal applications using modern full-stack technologies, ensuring scalability, maintainability, and long-term sustainability.
  • Lead the design and extension of applications built on modern frameworks, contributing to architectural decisions and technical direction.
  • Design and maintain internal APIs and third-party integrations (e.g., Salesforce and cloud services), ensuring reliability, performance, and secure data exchange.
  • Drive the delivery of complex product initiatives, owning solutions from technical discovery and design through implementation, deployment, and post-release evaluation.
  • Identify and address technical debt, performance challenges, and structural improvements within the systems you support.
 
Quality, Testing & Security
  • Establish and uphold high standards for automated testing (unit and integration), ensuring long-term code quality and system reliability.
  • Apply and advocate for accessibility (AODA, WCAG) and security (OWASP) best practices across projects.
  • Analyze and optimize system performance, proactively identifying bottlenecks and recommending architectural or design improvements.
  • Provide technical leadership in diagnosing complex defects and production issues, partnering with Product and Support to drive durable resolutions.
 
Engineering Practices & Delivery
  • Contribute to release planning and technical scoping, providing clear assessments of trade-offs, complexity, risk, and long-term impact.
  • Improve development workflows, tooling, and CI/CD processes to increase team efficiency and delivery confidence.
  • Participate in and elevate code review practices, providing thoughtful feedback that strengthens overall code quality and engineering standards.
  • Use AI-assisted development tools responsibly to improve productivity, maintainability, and documentation quality.
 
Documentation & Technical Collaboration
  • Document architectural decisions, APIs, and significant implementation details to support knowledge sharing and long-term maintainability.
  • Contribute to and help evolve shared libraries, internal frameworks, and design systems to ensure consistency and reusability across teams.
  • Collaborate across teams to align on technical patterns, integration strategies, and system design approaches.
 
What You Bring
We’re looking for someone who brings some or all of the following:
  • You want to ship regularly and take pride in delivering meaningful, end-to-end solutions. You approach development with curiosity, ownership, and a commitment to continuous improvement.
  • You write high-quality, maintainable code and understand the long-term impact of design decisions. Your work is well-structured, testable, documented, and backed by comprehensive automated tests that support long-term maintainability and reliability.
  • You’re comfortable working across a varied technical stack - including technologies such as PHP, JavaScript, Node.js, Python, and modern CSS - and modern architectural patterns (e.g., MVC, reactive frameworks, APIs, distributed services), and can reason about system design trade-offs.
  • You have experience designing and evolving application architecture, balancing immediate business needs with scalability, reliability, and maintainability.
  • You have experience writing and maintaining build, migration, and automation scripts to support development and deployments.
  • You have experience designing and operating applications within cloud-based environments, with a strong understanding of distributed systems patterns such as queues, background jobs, caching, and object storage.
  • You are confident diagnosing complex issues, analyzing root causes, and implementing durable solutions in production environments.
  • You can clearly articulate technical decisions, trade-offs, and risks, and collaborate effectively with cross-functional partners to drive alignment and informed decision-making.
  • You are comfortable breaking down complex initiatives into actionable steps, estimating effort, and driving work to completion with accountability.
  • You are skilled in developing full-stack solutions from scratch, creating systems that are reusable, performant, secure, and accessible.
  • You actively contribute to technical discussions, design reviews, and code reviews, helping strengthen engineering standards and shared understanding across the team.
  • You are self-motivated and capable of operating with a high degree of autonomy, taking initiative while collaborating effectively with your team.
  • You enjoy learning, solving challenging problems, and continuously strengthening your technical craft.
  • You have 5+ years experience in software engineering (with expertise in web development), and proficiency with the software development lifecycle (SDLC).
  • You earned a BS or MS in Computer Science, Software Engineering, or have the equivalent work experience.
 
Perks & Benefits

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