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

We are seeking a skilled Senior Software Engineer with expertise in Java with expertise in Node JS , Java, Spring Boot, REST API, Kafka , SQL Server Database, Cloud, Azure & AI tools . This ideal ...

Remote micro1 is engaging expert Senior Software Engineers to support a customer's innovative project. In this role, you'll apply your expertise to help train next-generation AI systems. Your work ...

Remote micro1 is engaging expert Senior Software Engineers to support a customer's innovative project. In this role, you'll apply your expertise to help train next-generation AI systems. Your work ...

Remote micro1 is engaging expert Senior Software Engineers to support a customer's innovative project. In this role, you'll apply your expertise to help train next-generation AI systems. Your work ...

Remote micro1 is engaging expert Senior Software Engineers to support a customer's innovative project. In this role, you'll apply your expertise to help train next-generation AI systems. Your work ...

Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in C++ or C * Strong foundation in firmware development of battery-powered and low-power embedded devices ...

Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in C++ or C * Strong foundation in firmware development of battery-powered and low-power embedded devices ...

Bachelor's of Computer Science, Software Engineering or related technical field. * Expert in C++ or C * Strong foundation in firmware development of battery-powered and low-power embedded devices ...

Showing results 21-40

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 Aug 10, 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 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 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 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 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.

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:
Infographic showing various Senior Software Developer 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 $99,044 per year, or $47.6 per hour.

CA$100K/yr

Full-time

Medical, Dental, Retirement

Re-posted 2 days ago


Job description

Please only apply to the one job you feel best fits your skillset and experience. If our team feels you are better suited for another role, we will reach out about the alternate opportunity.

Position Overview:

Squarepoint is seeking smart, self-driven and inquisitive individuals who want an opportunity to apply their advanced skills and knowledge in a challenging and innovative environment.

Projects within this role focus on developing and maintaining performance sensitive, reliable and scalable back-ends which are critical to our trading infrastructure. You will work alongside experienced colleagues, in small groups, to design and build the next generation of production grade trading and research software systems. Step into a career of continuous learning and development, surrounded by some of the most talented individuals in the industry, and grow your skills in a highly collegiate work environment.

When applying, you can indicate your preference for one or more of the following tracks. We will however work to ensure your role at Squarepoint is best suited to your skillset.

Python Development: Applications, services, and data driven systems

Projects within this track focus on developing and maintaining scalable services, full-stack web applications, and data processing algorithms, tools, and frameworks.

  • Build and maintain the core tooling, libraries, and frameworks we use for developing applications at Squarepoint,
  • Manage the software development lifecycle of libraries and frameworks used globally by our teams of technologists,
  • Contribute to data driven applications, pipelines, and systems used to feed predictive models in research and trading,
  • Build software products used worldwide by traders, researchers, data scientists, and other teams at Squarepoint to fuel our trading success.

C++ Development: Distributed, low latency, high performance systems 

Projects within this track focus on developing and maintaining performance sensitive, reliable and scalable back-ends which are critical to our trading infrastructure.

  • Work on high performance, low-latency systems powering critical trading operations,
  • Drive the design and implementation of trading frameworks, market data solutions and global market connectivity,
  • Build massively parallel, high-volume, distributed applications to enable our technology to scale as we grow,
  • Create distributed frameworks, tools, and platforms which process massive volumes of data and underpin the stack used by other technology teams.

Front-End Development: Build modern React web applications 

Projects within this track utilize your proficiency in React and Typescript to build crucial functionality for our users across the world.

  • Enhance your users' experience on our sophisticated research and trading platforms,
  • Collaborate with our expert team to develop fully-fledged dashboards facilitating real-time data access, and support the exploration of large volumes of data integral to our trading workflows and operations,
  • Build web applications to drive rapid decision-making and uphold our competitive edge in a high-stakes trading environment.

Required Qualifications 

  • Degree in Computer Science, Computer Engineering, or other degree with a heavy emphasis on software development,
  • Proficiency in at least one of our core languages: Python, C++, or KDB+/q, JavaScript/TypeScript/React,
  • Some experience developing software in a commercial setting, demonstrated through work experience or personal projects,
  • Knowledge of Linux and version control systems,
  • Excellent written and verbal communication skills,
  • Eagerness to continuously learn new technologies and develop with us,
  • Ability to work well in a fast-paced environment.

Nice to have:

  • Proficiency in more than one of our core programming languages,
  • Previous experience working in the hedge fund industry, or finance generally,
  • Demonstrable experience working with git and Linux.

The minimum base salary for this role is $100,000 if located in New York.  This expectation is based on available information at the time of posting.  This role may be eligible for discretionary bonuses, which could constitute a significant portion of total compensation.  This role may also be eligible for benefits, such as health, dental, and other wellness plans, as well as 401(k) contributions.  Successful candidates' compensation and benefits will be determined in consideration of various factors.