1

Freelance Full Stack Java Developer Jobs in Toronto, ON

Java Full-stack Developer

Mississauga, ON ยท On-site

CA$86K - CA$127K/yr

* The Senior Engineer in Production Management will be responsible for the development and overall ... The candidate must have Java backend development experience with Core Java Java EE Springboot ...

Java Full-stack Developer

Mississauga, ON ยท On-site

CA$86K - CA$127K/yr

* The Senior Engineer in Production Management will be responsible for the development and overall ... The candidate must have Java backend development experience with Core Java Java EE Springboot ...

We are seeking a talented senior full stack developers or team leads to join our Canadian Apps and ... Solid experience creating APIs with Python, .NET Core, Node.js, or Java. * Hands-on experience ...

Be Seen First

We are seeking a talented Full Stack Web Developer to join our Toronto-based tech team. You will be ... Proficiency in at least one modern programming language (e.g., Python, JavaScript, Java)

Full Stack Developer

Toronto, ON ยท Hybrid

CA$90K - CA$120K/yr

About The Role As a Full Stack Developer you'll be tasked with working on one of our web ... NET, Java Spring, or Node.js experience is an asset * Great interpersonal skills - we work very ...

Staff Software Developer, Full Stack

Toronto, ON ยท Hybrid

CA$164K - CA$222K/yr

The ideal candidate is an experienced Software Developer who is experienced with Java, TypeScript, React and general full-stack development. This engineer should be full-stack and prepared to work at ...

Commercial Banking Engineering is seeking a skilled Java Developer with extensive experience in ... We'd love to work with you if you have: * 10+ years of working experience as a full stack developer ...

Full Stack Developer

Toronto, ON ยท On-site

CA$62K - CA$86K/yr

... Full Stack Developer. In this role, you will design, develop, and maintain scalable multi-layer ... Implement back-end functionality using Java, Spring Boot, and related technologies to ensure ...

Showing results 41-60

Freelance Full Stack Java Developer information

What is a freelance full stack Java developer?

A Freelance Full Stack Java Developer is an independent professional who specializes in both front-end and back-end development using Java technologies. They handle the complete software development process, including designing user interfaces, building server-side logic, and managing databases. Freelancers in this role often work on a contract basis for multiple clients, providing flexibility and a variety of projects. Their expertise typically includes frameworks like Spring Boot, JavaScript libraries, RESTful APIs, and cloud services.

What are the key skills and qualifications needed to thrive as a freelance full stack Java developer?

To thrive as a Freelance Full Stack Java Developer, you need expertise in Java programming, front-end technologies (such as HTML, CSS, JavaScript), and back-end frameworks, often supported by a relevant degree or proven experience. Familiarity with tools like Spring Boot, REST APIs, databases (SQL/NoSQL), version control systems (e.g., Git), and cloud platforms is typically required. Strong problem-solving skills, effective communication, and self-motivation set top freelancers apart by enabling them to manage projects independently and collaborate with clients. These skills ensure the delivery of robust, scalable applications and client satisfaction in a competitive freelance market.

What are the most common challenges faced by freelance full stack Java developers when managing multiple client projects simultaneously?

Freelance full stack Java developers often juggle several client projects at once, which can pose challenges in terms of time management, communication, and prioritization. Balancing diverse client expectations, aligning project timelines, and handling unexpected technical issues require strong organizational skills and proactive communication. Many freelancers use project management tools and set clear milestones with clients to stay on track. Additionally, it's important to regularly update clients on progress and clarify requirements early to prevent scope creep and last-minute changes.

What is the difference between Freelance Full Stack Java Developer vs Freelance Front End Developer?

AspectFreelance Full Stack Java DeveloperFreelance Front End Developer
Skills & CertificationsJava, Spring, REST APIs, JavaScript, HTML, CSSHTML, CSS, JavaScript, frameworks like React or Angular
Work EnvironmentBackend and frontend development, full project lifecyclePrimarily UI/UX design, client-side coding
Industry UsageEnterprise applications, web services, backend systemsWebsite interfaces, mobile app frontends

Freelance Full Stack Java Developers handle both backend and frontend tasks using Java and related technologies, while Freelance Front End Developers focus mainly on user interface design and client-side coding. Both roles are in demand, but the full stack developer offers a broader skill set suitable for end-to-end project delivery.

What are the most commonly searched types of Full Stack Java Developer jobs in Toronto, ON?

The most popular types of Full Stack Java Developer jobs in Toronto, ON are:

What job categories do people searching Freelance Full Stack Java Developer jobs in Toronto, ON look for?

The top searched job categories for Freelance Full Stack Java Developer jobs in Toronto, ON are:

Infographic showing various Freelance Full Stack Java Developer job openings in Toronto, ON as of September 2026, with employment types broken down into 1% Internship, 79% Full Time, 13% Part Time, 6% Contract, and 1% Nights. Highlights an 83% Physical, 2% Hybrid, and 15% Remote job distribution.

Full-Stack Software Developer

Mississauga, ON โ€ข On-site, Remote

Full-time

PTO

Re-posted 6 days ago


Job description

Our Business: Engineered Intelligence Inc. (EII) is a power infrastructure technology company with headquarters in Calgary and offices in Toronto. We built a cloud-based software product, ENGIN, that is focused on helping our clients manage their transmission and distribution assets. ENGIN, enables our clients to monitor and maintain the condition of their assets and networks. ENGIN, is analytics-driven, with machine learning workloads and a vision of AI assisted planning.


With our intensive knowledge of grid-level assets, we provide our clients with the white glove experience. From software implementation, maintenance, and assistance with regulatory matters to ensure their grids are managed safely and with optimal cost efficiency.


If you would like to learn more, please visit our website at https://www.engineeredintelligence.com/


Who we are: We are a lean, fully remote team of professionals spanning across Canada who truly enjoy working together. We are alight with passion over building this remarkable business from the ground up. Everything we do matters. We are all experts in our field working together to build a strong company and achieve exceptional career milestones.

  • We value Teamwork as we believe great people do great things. We invest in our people and work together to achieve both individual and shared goals.
  • We are Committed to our Customers as our customers were our inspiration, now they are our focus.
  • We value Innovation & Diversity. We explore how to do what has yet to be done; We celebrate the limitless value diverse teams bring to innovation.
  • We take Ownership. This means we take initiative to exceed expectations and exercise accountability every step of the way.


The Position:Do our values align with you? Are you an experienced Full-Stack Software Developer looking to join a dedicated team working together to build rewarding careers and an incredible business? If so, please read on for more information!


Thisis a full-time role reporting to the Head of Engineering. This role will contribute to all stages of the software development life cycle: from participating in design and requirements breakdown, architecture and technical solutioning, analyzing / refactoring code, application development, and creating documentation. Strong full-stack capabilities are desired for this role, but developers with particularly strong experience either on the front-end or back-end and desire to do full-stack are most welcome to apply.


Work Location:
We are a hybrid company with offices in Calgary and Toronto. We spend much of our time working remotely but also meet regularly in our offices. Only candidates that can regularly work in either of these locations will be considered.


The ideal candidate will have:

  • Bachelor's Degree in Software Engineering, Computer Science or equivalent
  • 4+ years developing dynamic web-based applications in a professional environment
  • Experience with front-end development including:
    • Strong knowledge of typescript and it's best practices
    • Front-end development using common frameworks - Angular/React
      • Experience with recent versions of Angular or desire to work with Angular
    • Developing RESTful web APIs.
  • Experience with back-end development including
    • Knowledge of Java/Kotlin or similar languages
    • Experience with frameworks like Spring / Spring Boot
    • Experience with relational databases and ORMs
  • Strong focus on quality including code quality, unit testing, and general advocacy for continuous improvement
  • Ability to work independently and as part of a team; a self-starter, comfortable working with complex systems, eager to take on a wide range of responsibilities.


It would be great if you also have:

  • Understanding of AWS cloud services.
  • Knowledge of, exposure to, or experience with:
    • Web application server-side development frameworks, specifically Node.js / express.js with NoSQL database.
    • Data visualization and data analytics libraries and tools.
  • Exposure to Apache Spark
  • Knowledge or exposure to Scala
  • Knowledge or exposure to Python
  • Any familiarity with electrical engineering concepts and terminology.
  • Interest or exposure to machine learning tools and workloads.
  • Experience building/maintaining multi-tenant product environments, data management for multi-tenant environments, database migrations for multi-tenant environments.
  • Contribution to any opensource projects or libraries.


As a Full-Stack Software Developer you will:

  • Be involved throughout the software development life-cycle:
    • Offer suggestions and opinions towards technical solutioning for new development tasks.
    • Complete software development tasks across the application with an emphasis on high-quality code.
    • Identify and quantify (i.e. priority, time estimate) "tech debt" within the codebase(s).
  • Produce high-quality, effective, and sustainable code; ensure code is functional, testable, maintainable, and meets business requirements; ensure code is tested with test cases.
  • Understand the ins-and-outs of the company's software products from a technical perspective (i.e., architecture, design patterns, code structure).
  • Proficient in core aspects of business logic and user interactions with the company's software products.
  • Accept and produce feedback with the software development team:
    • Perform peer-reviews, review of pull requests for code style, design patterns, and best practices.
    • Perform code reviews and documentation when required to share knowledge with other team members.
    • Contribute towards best practices and technical resources within the development team.
  • Involvement in software implementation process as required, such as client delivery.
  • Peer within the development team, and mentor to intermediate, junior, and student developers


What we offer:

  • Flexible work hours (Core working hours 10:00AM to 3:00PM).
  • Autonomy with a wide range of responsibilities, opportunities for advancement, and cross-disciplinary exposure.
  • Stock options so you can realize the value created with your work in the organization.
  • The opportunity to put your skills to work, add milestones to your resume, and be part of something great from the early stages of a promising business.
  • Interactive and supportive remote workplace culture.
  • Competitive compensation package.
  • Paid time off and Benefits.