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Contract Back End Developer Jobs in Ontario (NOW HIRING)

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 ...

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 ...

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 ...

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 ...

Crowdlinker

... on a remote, contract, hourly basis). E ST candidates or ability to work EST hours preferred ... Proficient knowledge of backend programming languages like Node.js * Proficient in using front-end ...

Royal Bank of Canada

Staff AI Engineer

Toronto, ON · On-site

... contracts, backend, AI logic, and the executive-facing interface, with no expectation of a ... Programming Languages, Software Development, Software Development Life Cycle (SDLC), System ...

StackandCo

\n \n \n \n \n We have a requirement for a C# Developer to join our client in Dublin City Centre on a 6\-month contract with the possibility of extension. \n \n \n \n \n \n The role is Back\-End and ...

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All JobsContract Back End Developer JobsContract Back End Developer Jobs in Ontario

Contract Back End Developer information

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.

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 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.

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 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 1% As Needed, 71% Full Time, 24% Part Time, 1% Temporary, and 3% Contract. Highlights an 89% Physical, 4% Hybrid, and 7% Remote job distribution.

Senior Backend Developer

ShyftLabs

Toronto, ON • Hybrid

CA$100K - CA$140K/yr

Full-time

Medical, Dental, Vision

Re-posted 12 days ago

Job description

About ShyftLabs
At ShyftLabs, we live and breathe data. Since 2020, we've been helping Fortune 500 companies unlock growth with cutting-edge digital solutions that transform industries and create measurable business impact. We're growing fast and we're looking for passionate problem-solvers who are ready to turn big ideas into real outcomes.
 
The Opportunity
ShyftLabs is looking for a Senior Developer to help design, build, and scale our next generation of data-driven platforms and systems. This role sits at the intersection of platform engineering, system integrations, and intelligent product development, and will play a key role in shaping how our products evolve.

You will work closely with Product, Architecture, and cross-functional engineering teams to plan and deliver new features, lead development efforts, and ensure seamless integration across internal and external systems. This includes building robust APIs, event-driven services, and third-party integrations, while also contributing to emerging AI-powered capabilities within our platforms.

The ideal candidate combines strong backend and frontend engineering skills with experience in distributed systems, integrations, and scalable architectures. JavaScript, TypeScript, Node.js, and GraphQL remain core requirements for this role.

What You'll Do

  • Design and development of scalable, service-based architectures (front-end and back-end), while remaining hands-on in coding and delivery

  • Architect and implement system integrations across internal services and third-party platforms (REST, GraphQL, event streams, webhooks, ETL pipelines)

  • Collaborate with Product to translate business requirements into technical solutions, defining scope, complexity, and dependencies

  • Drive development across teams for services built in Node.js, TypeScript, JavaScript, and Python

  • Design and maintain API contracts, data models, and integration patterns to ensure consistency and reliability across systems

  • Build and optimize secure, high-performance, and highly available systems

  • Contribute to AI-enabled features and workflows, including integration of ML models, LLM APIs, or intelligent automation pipelines

  • Partner with architects to define system design, integration strategies, and reusable frameworks

  • Produce clear technical documentation (architecture diagrams, data flows, API specs, integration patterns)

  • Establish and enforce best practices in code quality, testing, and deployment

  • Lead code reviews, approve merges, and mentor engineers across teams

  • Troubleshoot complex production issues and drive resolution across distributed systems

  • Oversee the end-to-end lifecycle of feature development-from design through deployment and monitoring

What You Bring

  • 5+ years of experience building scalable, production-grade software systems across front-end and back-end

  • Bachelor's degree in Computer Science or a related field

  • Strong expertise in JavaScript and TypeScript

  • Proven experience with Node.js and GraphQL (required)

  • Deep experience building and consuming RESTful APIs and distributed services

  • Strong proficiency with tools and technologies such as Python, Docker, Git, SQL, and cloud-native architectures

  • Hands-on experience with GCP or AWS services (e.g., S3, CloudFront, EC2, RDS, Lambda, Batch)

  • Experience designing and implementing system integrations (microservices, third-party APIs, event-driven architectures, messaging systems like Kafka/SQS)

  • Ability to lead and deliver large, complex technical initiatives

  • Strong understanding of software design patterns, system architecture, and data flow design

  • Excellent communication skills, with the ability to articulate complex technical concepts clearly

  • Experience working in Agile/Kanban environments and a strong understanding of the SDLC

  • Adaptability and a proactive mindset in fast-paced, evolving environments

Nice to Have

  • Experience working on or building tax, fintech, or compliance-related products (e.g., tax calculation engines, filing systems, regulatory platforms)

  • Exposure to AI/ML engineering, including integrating LLM APIs, building data pipelines for ML workflows, or deploying AI-driven features

  • Experience with data platforms, data pipelines, or analytics systems

  • Familiarity with event-driven architectures and real-time data processing

  • Experience designing multi-tenant or enterprise-grade SaaS platforms

  • Background in integration-heavy environments (e.g., ERP, financial systems, external data providers)

Salary Range
  • $100,000 - $140,000 (CAD)
Why You'll Love Working at ShyftLabs
 
At ShyftLabs, your work matters. We're a growing data product company making a big impact with Fortune 500 clients and as we scale, you'll have the chance to shape solutions, influence strategy, and grow your career alongside us.
 
Here's what you can expect when you join our team:
-Hybrid Flexibility: Enjoy a hybrid model with three days per week in our Toronto office.
-Downtown Toronto Office: Work in the heart of the city.
-Comprehensive Benefits: We cover 100% of health, dental, and vision insurance premiums for you and your dependents which means no out-of-pocket costs. Eligibility starts from day one itself.
-Growth & Learning: Access extensive learning and development resources to keep leveling up your skills.
 
Inclusion at ShyftLabs
 
We're building something big, and we want you on the journey with us. If you're ready to use data and innovation to make an impact, apply today and let's grow together.
 
ShyftLabs is an equal-opportunity employer committed to creating a safe, diverse, and inclusive environment. We encourage applicants of all backgrounds including ethnicity, religion, disability status, gender identity, sexual orientation, family status, age, and nationality to apply. If you require accommodation during the interview process, let us know and we'll be happy to support you.
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