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Freelance Java Back End Developer Jobs in Toronto, ON

Hays

Java Backend Developer

Toronto, ON · Hybrid

CA$50 - CA$57/hr

Java Backend Developer Location: Toronto, ON (Hybrid - 4 days/week onsite) Duration: 1-Year Contract Rate : CAD $50/hr. - CAD $57/hr. Role Overview We are seeking an experienced Java Backend ...

Localcoin

Java Backend Developer

Etobicoke, ON · Hybrid

CA$100K - CA$135K/yr

As a Java Back-End Developer at Localcoin, you will be responsible for developing and maintaining functional and stable back end applications for our company, ensuring system consistency and ...

NearSource

Senior JAVA Backend Developer

Toronto, ON · Remote

CA$80 - CA$90/hr

Senior Java Backend Developer Location: 100% Remote, Canada Experience: 7 to 10 Years Employment Type: T4 Contract Rate: CAD $80 to $90 per Hour Role Summary NearSource is seeking a Senior Java ...

United Airlines

Java Backend Developer

Toronto, ON

Java Backend (Springboot + Kafka) Job Summary: We are seeking a skilled Java Backend Developer to join our team supporting a major banking client in Toronto. The ideal candidate will have hands on ...

Hays

Sr Backend Developer

Toronto, ON · Hybrid

CA$90 - CA$100/hr

Role : Senior Backend Developer Length : 1 year contract (strong potential for extension) Rate ... Design, develop, and maintain scalable backend services using Java and Kotlin * Build and optimize ...

Sapsol Technologies Inc

Java Backend

Mississauga, ON

Qualifications: 1. Java Expertise: Has at least 9+ years of hands-on Java development experience ... This level of database knowledge is crucial for data-heavy applications and backend services. 4. ...

Dew Software

Back End Developer

Toronto, ON

Job title: Sr. backend engineer Location: downtown Toronto -Hybrid Duration: Long term Contract We ... Excellent object oriented design and coding skills in Java or other OO languages, hands-on ...

Sangoma

Senior Backend Developer

Toronto, ON · Remote

CA$120K - CA$135K/yr

Own it. Sangoma is excited to announce an opening for a Senior Backend Developer to join our ... Node.js and Java. * Strong problem-solving skills with the ability to quickly learn new ...

Sangoma

Senior Backend Developer

Toronto, ON · Remote

CA$120K - CA$135K/yr

Own it. Sangoma is excited to announce an opening for a Senior Backend Developer to join our ... Node.js and Java. * Strong problem-solving skills with the ability to quickly learn new ...

Transunion

Java Developer

Burlington, ON · On-site

CA$89K - CA$123K/yr

Core Backend & FullStack Skills. * Practical experience developing UI components using Angular ... We are seeking a Java Developer with strong backend expertise and working knowledge of frontend ...

TransUnion

Java Developer

Burlington, ON · On-site

CA$89K - CA$123K/yr

Core Backend & FullStack Skills. * Practical experience developing UI components using Angular ... We are seeking a Java Developer with strong backend expertise and working knowledge of frontend ...

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Freelance Java Back End Developer information

What are the key skills and qualifications needed to thrive as a Freelance Java Back End Developer, and why are they important?

To thrive as a Freelance Java Back End Developer, you need strong proficiency in Java, object-oriented programming, RESTful API design, and experience with frameworks like Spring or Hibernate, typically supported by a relevant degree or proven project portfolio. Familiarity with version control systems (such as Git), build tools (like Maven or Gradle), cloud platforms, and continuous integration/continuous deployment (CI/CD) pipelines is highly valued. Outstanding problem-solving abilities, self-motivation, and effective client communication set top freelancers apart. These skills ensure you can deliver robust, maintainable solutions independently and build lasting client relationships.

What are some common challenges faced by Freelance Java Back End Developers when working with multiple clients simultaneously?

Freelance Java Back End Developers often juggle several projects at once, which can present challenges in time management, prioritizing tasks, and aligning with different client expectations. Each client may use distinct tech stacks, communication tools, and development processes, requiring adaptability and strong organizational skills. Clear communication, setting realistic deadlines, and using project management tools can help freelancers maintain quality and meet deliverables across diverse projects.

What does a Freelance Java Back End Developer do?

A Freelance Java Back End Developer is a software professional who specializes in building and maintaining the server-side logic of web applications using the Java programming language. They work independently on a contract basis for various clients, handling tasks such as developing APIs, managing databases, and ensuring the performance and security of the application’s back end. Their responsibilities often include collaborating with front-end developers, integrating third-party services, and troubleshooting server-side issues. Freelancers in this role can work remotely or onsite, offering flexibility to both clients and developers.

What is the difference between Freelance Java Back End Developer vs Freelance Java Software Engineer?

AspectFreelance Java Back End DeveloperFreelance Java Software Engineer
CredentialsJava certifications, experience in backend frameworksJava certifications, broader software development skills
Work EnvironmentRemote, project-based, client-specificRemote or on-site, project or product-focused
Industry UsagePrimarily in backend development projectsInvolved in full software development lifecycle
Search & Comparison IntentFocus on backend Java skillsBroader software development expertise

While both roles involve Java skills, a Freelance Java Back End Developer specializes in server-side development, focusing on backend systems. A Freelance Java Software Engineer may have a broader scope, including full-stack or application development, often requiring additional skills beyond backend work.

What are the most commonly searched types of Java Back End Developer jobs in Toronto, ON? The most popular types of Java Back End Developer jobs in Toronto, ON are:
What are popular job titles related to Freelance Java Back End Developer jobs in Toronto, ON? For Freelance Java Back End Developer jobs in Toronto, ON, the most frequently searched job titles are:
What job categories do people searching Freelance Java Back End Developer jobs in Toronto, ON look for? The top searched job categories for Freelance Java Back End Developer jobs in Toronto, ON are:
Freelance Java Back End Developer jobs near you
Java Backend Developer

Java Backend Developer

Hays

Toronto, ON • Hybrid

CA$50 - CA$57/hr

Other

Posted 20 days ago

Job description

Job Title: Java Backend Developer

Location: Toronto, ON (Hybrid – 4 days/week onsite)

Duration: 1-Year Contract

Rate: CAD $50/hr. – CAD $57/hr.


Role Overview

We are seeking an experienced Java Backend Developer to design, develop, and maintain scalable backend systems and microservices. The ideal candidate will have strong expertise in Java, cloud platforms, and modern DevOps practices, along with the ability to work in an Agile environment.


Required Skills & Qualifications

  • 7–12 years of experience in software development
  • Strong expertise in Java, Spring Boot, REST APIs, and microservices architecture
  • Hands-on experience with CI/CD tools such as GitHub Actions
  • Experience with Docker and Kubernetes
  • Strong experience with cloud platforms (AWS, Azure, or OpenShift)
  • Familiarity with AI-assisted development tools


Key Responsibilities

Backend Development

  • Develop, enhance, and maintain Java-based microservices and APIs
  • Write clean, efficient, and reusable code following best practices and design patterns
  • Build and optimize RESTful APIs aligned with OpenAPI specifications
  • Refactor legacy components to improve performance and maintainability

System Design & Architecture

  • Design scalable and fault-tolerant backend systems supporting high traffic
  • Participate in architectural discussions and propose backend solutions
  • Ensure adherence to modular, reusable, and cloud-native design principles

Cloud & Containerization

  • Develop and deploy applications on cloud platforms such as AWS, Azure, or OpenShift
  • Work with Docker and Kubernetes for containerization and orchestration
  • Ensure high availability, scalability, and resilience of backend systems

CI/CD & DevOps

  • Integrate backend services into CI/CD pipelines using GitHub Actions
  • Automate build, testing, and deployment processes
  • Improve deployment reliability and efficiency through automation

Testing & Quality Assurance

  • Write and maintain unit, integration, and functional tests
  • Participate in code reviews to ensure quality and standards
  • Ensure applications meet performance, security, and compliance requirements

AI-Assisted Development

  • Utilize AI tools such as GitHub Copilot to enhance development productivity
  • Leverage automation tools to improve development velocity

Monitoring & Production Support

  • Monitor applications using tools such as Splunk or Dynatrace
  • Troubleshoot production issues and ensure system stability
  • Participate in on-call support rotations

Collaboration & Agile Practices

  • Collaborate with product owners, architects, and cross-functional teams
  • Participate in Agile ceremonies including stand-ups, sprint planning, and reviews
  • Translate business requirements into technical solutions

Documentation & Knowledge Sharing

  • Maintain technical documentation for APIs and services
  • Share knowledge and mentor junior team members as needed

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