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Freelance Software Engineer Jobs in Ontario (NOW HIRING)

Mlse

Cloud Platform Engineer

Toronto, ON · On-site

... SRE, or Software Engineer where you supported applications, infrastructure or services in ... Freelance Rate We're glad you're here. Once you apply, we'll follow up by email, and you can track ...

Sopra Steria

Company Description Sopra Steria is a European leader in consulting, digital services, and software ... Independent contractor / freelance Duration: ~4 weeks initial deployment + 36 months L1 support ...

Mendix

Sr. Content Marketing Manager

Toronto, ON · On-site

Mentor other content marketers and manage relationships with freelance writers and agencies ... Background in data engineering, software development, or a technical field - or deep editorial ...

Upwork

Sr. Product Manager Work Guarantees

Toronto, ON · On-site

... freelance, fractional, and payrolled. This portfolio includes the Upwork Marketplace, which ... You will partner across engineering, legal, data science, finance, and operations to build programs ...

All JobsSoftware Engineer JobsFreelance Software Engineer JobsFreelance Software Engineer Jobs in Ontario

Freelance Software Engineer information

See Ontario salary details

$27K

$120.8K

$401K

How much do freelance software engineer jobs pay per year?

As of Aug 11, 2026, the average yearly pay for freelance software engineer in Ontario is $120,795.00, according to ZipRecruiter salary data. Most workers in this role earn between $71,000.00 and $140,500.00 per year, depending on experience, location, and employer.

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

To thrive as a Freelance Software Engineer, you need strong programming skills, proficiency in relevant languages (such as Python, JavaScript, or Java), and a good understanding of software development methodologies. Familiarity with version control systems like Git, cloud platforms, and project management tools is highly beneficial, along with a portfolio or certifications to demonstrate expertise. Excellent communication, time management, and self-motivation are critical soft skills for managing client relationships and project deadlines independently. These competencies are essential for delivering high-quality work, maintaining client trust, and sustaining a successful freelance business.

What does a freelance software engineer do?

Freelance software engineers design and develop applications for clients on a short- or long-term contract basis. In this role, your job duties may include coordinating with systems analysts and programmers to determine the scope of the project, developing new or modifying existing software according to your client's needs and expectations, and analyzing computer specifications and layouts to build a better system. You also troubleshoot and update the application when necessary. Freelance software engineers may work remotely from home or they may occasionally travel to their client’s office to perform job duties. You may work primarily with one client at a time, or you may choose to contract with many different clients.

How much do freelance software engineers make?

Freelance software engineers' earnings vary widely based on experience, skills, project complexity, and client. On average, they can charge hourly rates from $50 to over $150, with annual income ranging from $50,000 to over $150,000 depending on workload and reputation.

How do freelance software engineers typically manage client communication and project expectations?

Freelance software engineers usually handle client communication directly, which means clear and regular updates are crucial for building trust and ensuring project success. Setting expectations early—such as deliverables, timelines, and feedback processes—helps prevent misunderstandings and scope creep. Many freelancers use project management tools, structured status reports, and scheduled check-ins to keep projects on track. Balancing multiple clients can be challenging, so effective time management and proactive communication are key to maintaining client satisfaction and repeat business.

What is a freelance software engineer?

A freelance software engineer is an independent professional who offers software development services to clients on a contract or project basis, rather than being a full-time employee at a company. They may work on a variety of projects, such as building websites, creating apps, or developing custom software solutions. Freelance software engineers typically manage their own schedules, seek out clients, and are responsible for handling business operations like billing and taxes. This flexible career path allows them to work with different clients and industries, often remotely or from any location.
More about Freelance Software Engineer jobs
What are the most commonly searched types of Software Engineer jobs in Ontario? The most popular types of Software Engineer jobs in Ontario are:
What are popular job titles related to Freelance Software Engineer jobs in Ontario? For Freelance Software Engineer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Freelance Software Engineer jobs in Ontario look for? The top searched job categories for Freelance Software Engineer jobs in Ontario are:
What cities in Ontario are hiring for Freelance Software Engineer jobs? Cities in Ontario with the most Freelance Software Engineer job openings:
Freelance Software Engineer jobs near you
Infographic showing various Freelance Software Engineer job openings in Ontario as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $120,795 per year, or $58.1 per hour.

Copy of Senior Lua Developer (Roblox) - AI Code Evaluation

Lifted, an Upwork Company™

Ottawa, ON • Remote

Full-time

Posted 13 days ago

Job description

Company Description

An enterprise client is seeking experienced Lua Developers to support AI model training through technical evaluations, scripting tasks, and code quality reviews. This opportunity is ideal for developers who have strong Lua programming skills and experience building or scripting within the Roblox ecosystem.

The client partners with leading AI organizations to improve the quality of next-generation AI models by leveraging the expertise of experienced software developers. Selected freelancers will help evaluate AI-generated code, review programming solutions, and contribute to the development of high-quality training data used to advance generative AI technologies.

    Job Description

    This opportunity is ideal for experienced Lua programmers who enjoy solving technical challenges, reviewing code, and improving software quality.

    What You'll Do:

    • Review, analyze, and evaluate Lua code for accuracy, quality, and best practices.
    • Complete technical evaluations and scripting-related tasks involving Lua programming.
    • Identify bugs, performance issues, and opportunities to improve existing code.
    • Develop and modify Lua scripts based on project requirements.
    • Apply strong programming fundamentals, including modular design, data structures, and debugging techniques.
    • Work with Roblox Studio and Roblox development environments where applicable.
    • Contribute to AI model training by providing high-quality technical feedback and code evaluations.
    • Collaborate with the client's AI evaluation platform while following detailed project guidelines.
    Qualifications

    Requirements:

    • Advanced proficiency in Lua programming, including scripting, debugging, and code optimization.
    • Hands-on experience using Roblox Studio and/or developing applications or games on the Roblox platform.
    • Strong understanding of programming fundamentals, including data structures, functions, modular programming, and performance optimization.
    • Ability to independently review, analyze, and improve existing Lua code.
    • Professional working proficiency in English with strong written communication skills.
    • Ability to work independently and follow detailed technical instructions.

    Nice to Haves:

    • Experience developing Roblox games or interactive experiences.
    • Experience reviewing code or conducting technical quality assurance.
    • Familiarity with software testing, debugging, and code optimization techniques.
    • Experience contributing to AI, machine learning, or code evaluation projects.

    Additional Information
    • Fully remote, project-based opportunity.
    • Up to $60/hour, depending on project availability.
    • Expected workload ranges from 10–39 hours per week, although work volume may fluctuate.
    • Weekly lump-sum payments for work completed during the previous week.
    • Qualified candidates will receive an Upwork contract offer along with onboarding instructions.
    • Candidates who successfully complete the initial survey will be invited to a paid technical evaluation (approximately 2–3 hours). Approved evaluations will receive a $150 payment.
    • To begin onboarding and access project tasks, candidates must have an active Upwork contract with the client.
    • Due to the high volume of applicants, the client may not be able to respond to individual inquiries.