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Freelance Java Back End Developer Jobs in Toronto, ON

Interac Corp.

Engineering Standards, Lead

Toronto, ON · Hybrid

  • PTO

Evaluate and recommend shared Java backend libraries, build tooling, third-party frameworks, and backend platform practices that improve consistency, reliability, and developer productivity.

New

Atyeti Inc

Sr Java developer

Toronto, ON

A Java Developer designs, develops, tests, and maintains scalable Java-based applications (web ... Build new and enhance existing Java applications, including back-end services, APIs (RESTful), and ...

Pinterest

Software Engineer II, Backend

Toronto, ON

Actively work to improve the developer process and experience in all phases from coding to ... Experience in Python, Java, C++, or Go or another language and a willingness to learn * Experience ...

Scotiabank

Java Developer

Toronto, ON

  • PTO

Commercial Banking Engineering is seeking a skilled Java Developer with extensive experience in ... The ideal candidate will have a strong foundation in both front-end and back-end technologies, with ...

Common Wealth Retirement

Junior Back End Engineer

Toronto, ON · Remote

CA$80K - CA$100K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Embrace a DevOps philosophy . Engineers are expected to understand how their code runs in ... Backend : Java, Kotlin, Spring Boot, JPA/Hibernate, Gradle, Cucumber, JUnit * Infrastructure on AWS:

Pigment

Senior Backend Software Engineer

Toronto, ON · On-site +1

CA$100K - CA$180K/yr

Solid background in backend software engineering and delivering production-ready systems. - Proven experience designing object oriented software with languages such as C#, Java, C++, Golang, Rust ...

US Mobile

Senior Backend Engineer

Toronto, ON · On-site

CA$140K - CA$180K/yr

  • Medical

  • PTO

Develop and maintain RESTful APIs using Java (Spring Boot or related web frameworks) or Python ... Collaborate with Product, QA, and DevOps teams to deliver reliable and scalable features * Write ...

EvenUp

Senior Backend Engineer, Entities

Toronto, ON · Remote

$184K - $249K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Proficiency in Python or other languages (Go, Java, C++). * Strong written and verbal communication ... Prior work supporting internal platforms or developer-facing tools. #LI-Hybrid Benefits & Perks: As ...

HelloFresh

Staff Backend Engineer

Toronto, ON · Hybrid

  • Medical

  • Dental

  • PTO

Lead architectural discussions, mentor engineers in modern backend and AI-assisted engineering ... Java. * Strong communication and collaboration skills. You are comfortable working closely with ...

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Freelance Java Back End Developer information

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 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 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
Infographic showing various Freelance Java Back End Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 58% Full Time, and 42% Contract. Highlights an 100% In-person job distribution.

Engineering Standards, Lead

Interac Corp.

Toronto, ON • Hybrid

Full-time

PTO

Posted yesterday

New

Job description

Who We Are:

Every transaction matters. Every Canadian matters. At Interac, we protect both - driving trust, security, and inclusion, so our digital economy thrives.
Founded in 1984, Interac connects Canadians through secure digital payments, advanced identity verification and industry-leading fraud protection. Connecting banks, businesses, and individuals, Interac enables millions to send, receive, and manage money safely and effortlessly every day - across both digital and physical environments.

As the backbone of Canada's financial ecosystem, Interac facilitates over 20 million transactions daily, supported by trusted partnerships with government and financial institutions. Consistently ranked as Canada's most reputable financial technology brand, Interac is deeply embedded in the daily lives of Canadians.

Who You Will Work With:

The Engineering Standards Lead role will report to the Software Engineering Centre of Excellence Lead and work closely with application development teams, architecture, security, product, and engineering practice leads across Interac. This role provides technical direction and standards leadership for Java-based backend platforms and services, while supporting the responsible adoption of AI-assisted engineering practices across teams.

What YouWillDo:

  • Define, document, and enforce Java/Kotlin coding standards, design patterns, and architectural guidelines across backend microservices.
  • Maintain engineering standards documentation as a single source of truth and integrate quality expectations into CI/CD pipelines using tools such as SonarQube, GitHub Advanced Security, linting, GitHub Actions, Maven, Gradle, and Jenkins.
  • Lead code quality, security, and compliance initiatives by defining KPIs, conducting compliance scanning, reporting on findings, and driving remediation of critical issues.
  • Evaluate and recommend shared Java backend libraries, build tooling, third-party frameworks, and backend platform practices that improve consistency, reliability, and developer productivity.
  • Provide technical advisory input on API design, service contracts, inter-system integration patterns, cloud-native architecture, and modernization initiatives.
  • Define AI adoption guidelines for backend engineering, including responsible use of AI-assisted coding tools, LLM integrations, AI-generated code review practices, prompt guidance, and guardrails aligned to risk and data governance expectations.
  • Coach and mentor backend engineers across product teams, influence standards adoption, facilitate working groups, and communicate technical recommendations to senior stakeholders.

WhatYou Bring:

  • 6+ years of software engineering experience, with strong hands-on coding and technical delivery ownership.
  • Deep practical knowledge of engineering standards across Git workflows, CI/CD, testing strategy, secure coding, and code quality.
  • Proven ability to define standards and implement them directly through templates, automations, and reusable tooling.
  • Strong experience with modern developer platforms and tooling (for example: GitHub, GitHub Actions, SonarQube, SAST/DAST, policy-as-code).
  • Ability to translate governance and risk requirements into clear, adoptable standards that teams actually use.
  • Track record of improving developer experience while raising quality, reliability, and compliance outcomes.
  • Comfort mentoring engineers, reviewing architecture/code, and driving consistent practices across squads.
  • Strong communication skills with the ability to partner effectively with engineering, platform, and security stakeholders.

WhatWe'reOffering:

The hiringrangefor this position is$145,000.00 - $160,000.00, and you will also be eligible for our short-term incentive plan. The exact amount will depend on factors such as skills, experience, and job-related knowledge, butInterac'scommitment goes beyond compensation. Our Total Rewards package is designed to support your well-being and future, and includes:

  • Generous vacation and wellness days to help you recharge
  • Comprehensive employer-paid benefits coverage for peace of mind
  • Market-leading employer-funded RRSP program to invest in your future
  • Flexible hybrid work model for better work-life balance
  • Accessto afree and confidential 24/7 employee & familyassistanceprogram to offer support for you and your immediate family
  • Pregnancy and parental leave top-up to support growing families
  • Charitable donation matching with United Way to amplify your impact

Why Join Us?

At Interac, the impact we make, and the people who drive it, is profound. When you become part of our team, you're joining a purpose-driven organization that's shaping the future of digital finance in Canada. Here's what you can expect:

  • Investing in the Future - Help us unlock digital prosperity for all Canadians.

  • Innovative Thinking - Collaborate on products, practices, and platforms that redefine what's possible.

  • Inclusive Culture - Be empowered to bring your whole self to work and realize your full potential.

  • Inspiring Community - Work in an ecosystem where we lift each other up and rise together.

  • Intentional Support - Enjoy flexible, supportive offerings that prioritize your total wellness.

Additional Pre-Employment Requirements:

To ensure the integrity of our organization, successful candidates will be required to complete background checks, which may include, Canadian Criminal Credit Check, Canadian ID Cross-Check, Public Safety Verification, 5-year Employment Verification, Education Verification, Credit Check, and Social Media Check.

Equal Opportunity Employer

Interac is also an equal opportunity employer committed to fostering a diverse and inclusive workplace. We believe that innovation thrives when people from different backgrounds, experiences, and perspectives come together. That's why we are committed to providing fair and equitable employment opportunities for all individuals, without discrimination based on race, color, ancestry, ethnic origin, place of origin, citizenship, creed, sex, sexual orientation, gender identity or expression, age, marital or family status, disability, or any other characteristic protected by applicable law.

If you require accommodation during any stage of the application or recruitment process, please contact us at humanresources@interac.ca. We will work with you to meet your needs.

Please be aware that certain individuals are misusing Interac Corp.'s name and logo to promote fictitious employment opportunities. Interac Corp. never requests, solicits, or accepts any form of payment in exchange for employment. Any such offers are fraudulent and should be disregarded. Interac Corp. assumes no liability for any claims, losses, damages, expenses, or inconveniences arising from or related to these fraudulent activities. Such communications do not constitute an offer or representation by Interac Corp. or its subsidiaries and affiliates.

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