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Freelance Data Engineer Jobs in Ontario (NOW HIRING)

Starcom Mediavest Group Germany Gmbh

QA Analyst

Toronto, ON · On-site

CA$78K - CA$88K/yr

... data, media and technology should all work together, and we use that to influence human behavior ... Full-time and freelance opportunities are available, with positions starting immediately. You ...

Publicis Groupe Holdings B.V

QA Analyst

Toronto, ON · On-site

CA$78K - CA$88K/yr

... data, media and technology should all work together, and we use that to influence human behavior ... Full-time and freelance opportunities are available, with positions starting immediately. You ...

Tripledot Studios

Creative Strategy Manager

Toronto, ON · On-site

Clipwire Games is one of Canada's top grossing mobile game developers, and the creator of Monopoly ... Our studio is built on strong values, work ethic, and intelligent data driven growth. We work hard ...

All JobsData Engineer JobsFreelance Data Engineer JobsFreelance Data Engineer Jobs in Ontario

Freelance Data Engineer information

See Ontario salary details

$24K

$102.2K

$178K

How much do freelance data engineer jobs pay per year?

As of Aug 30, 2026, the average yearly pay for freelance data engineer in Ontario is $102,241.00, according to ZipRecruiter salary data. Most workers in this role earn between $56,500.00 and $142,000.00 per year, depending on experience, location, and employer.

What is a freelance data engineer?

A Freelance Data Engineer is a self-employed professional who designs, builds, and maintains data systems for clients on a project basis. They work with databases, ETL pipelines, cloud platforms, and big data technologies to ensure efficient data storage and processing. Unlike full-time employees, freelancers have the flexibility to choose projects, set their own schedules, and work remotely. They may collaborate with data scientists, analysts, and engineers to ensure seamless data flow. Freelance Data Engineers need strong technical skills in SQL, Python, Spark, and cloud services like AWS, GCP, or Azure.

What types of projects and clients can a freelance data engineer expect to work with?

Freelance Data Engineers often work on diverse projects ranging from building custom data pipelines and automating workflows to migrating databases or developing data integration solutions for businesses of all sizes. Clients can include startups looking to build new data infrastructure, e-commerce companies seeking analytics solutions, or established enterprises aiming to modernize their data systems. Most projects require close collaboration with data scientists, analysts, or software engineering teams, and the scope can vary from short-term assignments to ongoing support. Freelancing provides flexibility to choose projects that match your expertise and interests, as well as opportunities to gain experience across multiple industries.

What are the key skills and qualifications needed to thrive as a freelance data engineer?

To thrive as a Freelance Data Engineer, you need strong programming skills (in languages like Python or Scala), in-depth knowledge of data modeling and ETL processes, and a solid background in databases and cloud platforms. Familiarity with tools such as Apache Spark, Hadoop, SQL, AWS, or Google Cloud, as well as relevant certifications like AWS Certified Data Analytics, is highly beneficial. Strong communication, project management, and problem-solving skills help you collaborate with clients and adapt to changing project requirements. These abilities are crucial for efficiently delivering tailored data solutions and building a reputable freelance business.

What are the most commonly searched types of Data Engineer jobs in Ontario?

The most popular types of Data Engineer jobs in Ontario are:

What are popular job titles related to Freelance Data Engineer jobs in Ontario?

For Freelance Data Engineer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Freelance Data Engineer jobs in Ontario look for?

The top searched job categories for Freelance Data Engineer jobs in Ontario are:

Freelance Data Engineer jobs near you
Infographic showing various Freelance Data Engineer job openings in Ontario as of August 2026, with employment types broken down into 72% Full Time, 14% Part Time, and 14% Temporary. Highlights an 72% In-person, 14% Hybrid, and 14% Remote job distribution, with an average salary of $102,241 per year, or $49.2 per hour.

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

Ottawa, ON • Remote

Lifted, an Upwork Company™
Software Development • 501 - 1,000 employees
Learn more about Lifted, an Upwork Company™external

Full-time

Re-posted yesterday

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.

    Apply