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Contract Back End Developer Jobs in Ontario (NOW HIRING)

Capco

Jr. Back-End Developer (Contract)

Toronto, ON · On-site

The Role Capco is seeking an Junior Backend Developer ( Contract - 6 months ) to support a major Financial Services client in delivering vulnerability remediation initiatives across critical ...

NearSource

Senior JAVA Backend Developer

Toronto, ON · Remote

CA$80 - CA$90/hr

T4 Contract Rate: CAD $80 to $90 per Hour Role Summary NearSource is seeking a Senior Java Backend Developer to contribute to a large-scale cloud-native platform for a Fortune 500 product company.

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 ... Design and maintain API contracts, data models, and integration patterns to ensure consistency and ...

Worthland

Senior Backend Engineer (Web3)

Toronto, ON

CA$300K - CA$450K/yr

Work with on-chain data and interact with smart contracts. * Optimize blockchain transaction ... Collaborative, developer-focused work environment in a downtown office . * Inclusive and dynamic ...

Worthland

Senior Backend Engineer (Web3)

Toronto, ON

CA$300K - CA$450K/yr

Work with on-chain data and interact with smart contracts. * Optimize blockchain transaction ... Collaborative, developer-focused work environment in a downtown office . * Inclusive and dynamic ...

Chubb

Senior Backend Engineer

Toronto, ON

... endpoint - API contracts are first-class deliverables Apply structured OgmaLogger logging ... backend engineering experience delivering production services at meaningful scale TypeScript ...

Tabby LLC

We're looking for a Senior Backend Engineer to help us build an internal AI agent platform. You'll ... contract * Fully remote setup, work from anywhere in Europe * Up to 20% tax allowance * 22 paid ...

Tucows Inc.

Senior Backend Engineer

Toronto, ON · Remote

CA$145K - CA$155K/yr

Design and maintain APIs, database schemas, integrations, and data contracts. * Improve system ... backend software engineering experience. * Experience providing technical direction while remaining ...

Tucows Domains

Senior Backend Engineer

Toronto, ON · Remote

CA$145K - CA$155K/yr

Design and maintain APIs, database schemas, integrations, and data contracts. * Improve system ... backend software engineering experience. * Experience providing technical direction while remaining ...

Lush, Inc.

Backend QA Engineer

London, ON · Hybrid

Contract: 6-month fixed-term contract Diversity matters We are building a brand that represents the ... and DevOps on root-cause fixes. * Agile Collaboration: Serve as an active member of an autonomous ...

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Contract Back End Developer information

What is the difference between Contract Back End Developer vs Contract Front End Developer?

AspectContract Back End DeveloperContract Front End Developer
Required SkillsServer-side languages (e.g., Java, Python), databases, API developmentHTML, CSS, JavaScript, UI frameworks
Work EnvironmentBackend systems, server management, database integrationClient-side interfaces, user experience design
Common CertificationsNone specific, but backend certifications (e.g., AWS, Oracle) are commonNone specific, but front end certifications (e.g., React, Angular) are common

Contract Back End Developers focus on server-side logic, databases, and API development, while Contract Front End Developers work on user interfaces and client-side functionality. Both roles require technical skills but differ in their focus areas within software development.

What are some common challenges faced by contract back end developers when integrating with existing systems?

Contract back end developers often encounter challenges such as limited documentation, legacy codebases, and varying technology stacks when integrating with existing systems. Navigating these complexities requires strong problem-solving skills and the ability to quickly understand unfamiliar architectures. Effective communication with internal teams is crucial to clarify requirements and ensure seamless integration, especially within tight project timelines. Adaptability and proactive collaboration can help overcome these hurdles and deliver robust solutions.

How much do contract back end developers get paid?

Contract back end developers typically earn between $40 and $150 per hour, depending on experience, location, and project complexity. Senior developers with specialized skills in languages like Java, Python, or Node.js tend to command higher rates, especially for short-term or high-demand projects.

What are the key skills and qualifications needed to thrive as a contract back end developer?

To thrive as a Contract Back End Developer, you need strong skills in server-side programming languages (such as Node.js, Python, or Java), database management, and API development, often supported by a relevant degree or equivalent experience. Familiarity with version control systems like Git, cloud platforms (e.g., AWS, Azure), and containerization tools such as Docker is typically required. Excellent problem-solving, communication, and time management skills help you collaborate effectively and deliver quality work on tight schedules. These skills ensure you can build scalable, reliable back end systems that meet client requirements and project deadlines.

What is a contract back end developer?

Contract Back End Developers are software professionals who specialize in building and maintaining the server-side components of web applications on a contractual basis. They focus on databases, server logic, APIs, and integration with front-end systems to ensure smooth functionality and performance. Unlike full-time employees, contract developers are typically hired for specific projects or time frames, offering flexibility to both the developer and the employer. They often work with languages like Java, Python, Node.js, or Ruby and must be adept at collaborating with front-end teams and stakeholders.

Is a contract back end developer in demand?

Contract back end developers are in demand due to the ongoing need for software development, especially in industries adopting cloud computing and microservices architectures. Skills in programming languages like Java, Python, or Node.js, along with experience in APIs and databases, increase employability in this flexible work arrangement.
What are the most commonly searched types of Back End Developer jobs in Ontario? The most popular types of Back End Developer jobs in Ontario are:
What are popular job titles related to Contract Back End Developer jobs in Ontario? For Contract Back End Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Contract Back End Developer jobs in Ontario look for? The top searched job categories for Contract Back End Developer jobs in Ontario are:
What cities in Ontario are hiring for Contract Back End Developer jobs? Cities in Ontario with the most Contract Back End Developer job openings:
Contract Back End Developer jobs near you
Infographic showing various Contract Back End Developer job openings in Ontario as of August 2026, with employment types broken down into 78% Full Time, 16% Part Time, 1% Temporary, and 5% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution.

Jr. Back-End Developer (Contract)

Capco

Toronto, ON • On-site

Other

Re-posted 13 days ago

Job description

Build secure, scalable backend solutions while helping leading financial institutions strengthen their technology platforms and accelerate vulnerability remediation initiatives.

The Role

Capco is seeking an Junior Backend Developer (Contract - 6 months) to support a major Financial Services client in delivering vulnerability remediation initiatives across critical applications and platforms. This role combines hands-on backend engineering with cross-functional collaboration, helping delivery teams implement, test, and validate remediation activities that strengthen application security and platform resilience.

You will work across development, testing, DevOps, troubleshooting, and production support activities while collaborating closely with engineering teams, security stakeholders, and business partners to ensure successful delivery outcomes.

What You'll Do

  • Design, develop, and maintain backend services using Java and Spring Boot within enterprise-scale applications.
  • Support vulnerability remediation and application modernization initiatives across critical technology platforms.
  • Collaborate with business stakeholders, engineers, and delivery teams to gather requirements and implement effective solutions.
  • Participate in code deployment, testing, troubleshooting, and production support activities across the software development lifecycle.
  • Contribute to Agile delivery teams, ensuring high-quality, secure, and resilient technology solutions.

What We're Looking For

  • 2+ years of software development experience with strong expertise in Java and Spring Boot.
  • Experience developing and supporting backend services, APIs, and distributed applications.
  • Understanding of deployment pipelines, CI/CD processes, testing practices, and release management.
  • Strong communication skills with the ability to work directly with business and technical stakeholders.
  • Experience working within Agile delivery environments.

Bonus Points For

  • Experience within Financial Services, Banking, Capital Markets, or Payments environments.
  • Knowledge of vulnerability management, application security, or secure software development practices.
  • Experience with cloud platforms such as AWS, Azure, or GCP.
  • Familiarity with OpenShift, Kubernetes, Docker, or containerized environments.
  • Exposure to integration technologies, messaging frameworks, or event-driven architectures.

Why Join Capco

  • Deliver high-impact technology solutions for Tier 1 financial institutions.
  • Work in a collaborative, flat, and entrepreneurial consulting culture.
  • Access continuous learning, training, and industry certifications.
  • Be part of a team shaping the future of digital financial services.
  • Help shape the future of digital transformation across Financial Services and Energy.

Why This Role Is Open

We are currently hiring for this role due to an existing or newly created vacancy within our organization. This position is open as part of our ongoing business needs, and we are actively reviewing applications to fill this role with a qualified candidate who can make an immediate impact.

Inclusion at Capco

We're committed to making our recruitment process accessible and straightforward for everyone. If you need any adjustments at any stage, just let us know - we'll be happy to help. We value each person's unique perspective and contribution. At Capco, we believe that being yourself is your greatest strength. Our #BeYourselfAtWork culture encourages individuality and collaboration - a mindset that shapes how we work with clients and each other every day.

Use of Artificial Intelligence in Talent Acquisition

At Capco, we use artificial intelligence (AI) tools to support and enhance several parts of talent acquisition. This includes using AI-enabled features within LinkedIn to help source potential candidates, speeding up routine recruitment communications such as emails and creating compelling and brand-aligned job postings that accurately reflect role requirements, and AI-scheduling applications to improve the efficiency of interview coordination.

AI is used as a support tool only. All hiring decisions are made by talent acquisition and hiring teams.

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About Capco

Sourced by ZipRecruiter

Industry

Guided missile and space vehicle manufacturing

Company size

201 - 500 Employees

Headquarters location

Grand Junction, CO, US

Year founded

1958

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