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Freelance Java Backend Developer Jobs in Toronto, ON

Rumble - Career Page

Senior Back-End Developer

Toronto, ON · On-site

CA$135K - CA$154K/yr

The Senior Back-End Developer is responsible for designing, building, and maintaining high-performance server-side systems that power a large-scale video platform serving millions of users. This role ...

Rumble

Senior Back-End Developer

Toronto, ON · On-site

CA$135K - CA$154K/yr

The Senior Back-End Developer is responsible for designing, building, and maintaining high-performance server-side systems that power a large-scale video platform serving millions of users. This role ...

CIBC US

Consultant, Back End Developer

Toronto, ON · On-site +1

... Go and Java. Must be able to develop code and test computer programs for straightforward ... Programming Interface (API), Back-End Development, Design, Java (Programming Language), Python ...

CIBC

Consultant, Back End Developer

Toronto, ON · On-site +1

... Go and Java. Must be able to develop code and test computer programs for straightforward ... Programming Interface (API), Back-End Development, Design, Java (Programming Language), Python ...

ShyftLabs

Senior Backend Developer

Toronto, ON · Hybrid

CA$100K - CA$140K/yr

The ideal candidate combines strong backend and frontend engineering skills with experience in distributed systems, integrations, and scalable architectures . JavaScript, TypeScript, Node.js, and ...

CMiC

PL/SQL Developer

Toronto, ON · On-site

CA$70K - CA$115K/yr

Job Overview We are seeking a Back-End Developer with deep expertise in Oracle PL/SQL and experience in Java-based REST API development . This role will focus primarily on database development with ...

CMiC

PL/SQL Developer

Toronto, ON · On-site

CA$70K - CA$115K/yr

Job Overview We are seeking a Back-End Developer with deep expertise in Oracle PL/SQL and experience in Java-based REST API development . This role will focus primarily on database development with ...

IT Connex

Python Developer

Mississauga, ON · Hybrid

Python Backend Developer 📍 Hybrid (3 Days Onsite) | Greater Toronto Area 💼 Contract ... Polars, Kafka, Spark, Java * Docker / Kubernetes / OpenShift / ECS * Financial services or trading ...

United Airlines

Java Full Stack Developer

Toronto, ON · On-site

Should have 6 to 8+ years of experience in Java back-end technologies like Core Java, Spring ... Should have good understanding of SCM systems like GITHUB and DevOps tools like Jenkins. * Should ...

Carbonhound

Senior Back-end Developer

Toronto, ON · Hybrid

The Role We're looking for a Senior Backend Developer to join our 10-person team to drive profitable climate action in businesses and make a meaningful difference with their work. This is a hybrid ...

Carbonhound

Senior Back-end Developer

Toronto, ON · On-site

CA$120K - CA$140K/yr

The Role We're looking for a Senior Backend Developer to join our 10-person team to drive profitable climate action in businesses and make a meaningful difference with their work. This is a hybrid ...

Capgemini

Java Full-stack Developer

Mississauga, ON · On-site

CA$86K - CA$127K/yr

The candidate must have Java backend development experience with Core Java Java EE Springboot ... engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data ...

Capgemini

Java Full-stack Developer

Mississauga, ON · On-site

CA$86K - CA$127K/yr

The candidate must have Java backend development experience with Core Java Java EE Springboot ... engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data ...

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Intermediate Backend Developer - Remote Canada

Smile Digital Health

Toronto, ON • Remote

CA$90K - CA$110K/yr

Full-time

Posted 6 days ago

Job description

The Intermediate Backend Developer works closely with engineering teams to design, implement, and maintain components of the Smile Digital Health platform. This position operates with a good degree of independence, contributing across the full development lifecycle from requirements analysis through to delivery, while developing deeper technical expertise in preparation for senior-level responsibilities.

Responsibilities:
  • Design and implement back end application components, such as FHIR operations, primarily using Java and related technologies.
  • Develop and maintain core product code, with a focus on quality, performance, and maintainability.
  • Participate in code reviews, adhere to team coding standards, and contribute to improving development practices.
  • Analyze requirements and propose technical solutions at various stages of development.
  • Build and iterate on proof-of-concept integrations.
  • Troubleshoot and resolve issues reported by customers or identified during testing.
  • Research relevant technologies and contribute findings to the team.
  • Create and maintain technical documentation.
Requirements:
  • Degree in Computer Science, Engineering, Mathematics, or a related field.
  • 4+ years of professional back end development experience.
  • Solid experience with Java and Spring; working knowledge of REST APIs, SQL, and Git.
  • Experience with end-to-end feature development and unit testing practices.
  • Ability to work independently on assigned tasks while collaborating effectively within a team.
  • Comfortable working through ambiguity and contributing to technical problem solving.
  • Experience creating and maintaining clear technical documentation.
  • Knowledge or experience in healthcare, HL7, or FHIR is an asset.
  • Experience with Apache Camel and building robust integration patterns to ensure seamless data exchange across disparate systems.
  • Strong analytical and communication skills.
Additional Information:
Smile discloses that artificial intelligence (AI) may be used in portions of the recruitment and selection process, such as resume screening or application assessment. All hiring decisions are ultimately made by qualified human decision-makers, and AI tools are used to support - not replace - fair and equitable hiring practices. 
This position is a new role, created to support Smile's continued growth and commitment to operational excellence.
$90,000 - $110,000 a year
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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