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Contract Java Developer Jobs in Thornhill, ON (NOW HIRING)

Jay Analytix

UI React Developer (QTS)

Toronto, ON · On-site

Contract Duration: 1+ Year Long Term Location: Toronto, Ontario (Hybrid 3 days in office ... Experience with server-side development in Node.js, Java 11, or Python * Working knowledge of SQL ...

Jay Analytix

UI React Developer (QTS)

Toronto, ON · Hybrid

Contract Duration: 1+ Year - Long Term Location: Toronto, Ontario (Hybrid - 3 days in office ... Experience with server-side development in Node.js, Java 11, or Python * Working knowledge of SQL ...

Td

Principal Platform Engineer

Toronto, ON

CA$165K - CA$200K/yr

Design and govern the API layer - RESTful and GraphQL contracts, versioning strategy, gateway ... Java , REST and GraphQL API design, and distributed systems fundamentals. * Solid understanding of ...

YO AI Labs

Software Engineer - Remote

Toronto, ON · Remote

Contract Location: Remote Job Summary: We are looking for experienced software engineers to help ... Java, C++, Go or Rust * Experience building, maintaining, or reviewing production-level ...

OpsGuru

Principal Quality Architect

Toronto, ON

Design and build test frameworks and automation across the stack; unit, integration, contract, end ... programming languages (e.g., TypeScript, Python, Go, .NET, Java). * Generative AI & Agentic ...

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All JobsContract Java Developer JobsContract Java Developer Jobs in Thornhill, ON

Contract Java Developer information

What is a contract Java developer?

Contract Java Developers are software professionals who specialize in the Java programming language and are hired on a contract basis, rather than as permanent employees. They typically work for a set period of time or on a specific project, developing, testing, and maintaining Java-based applications according to the client’s requirements. These developers are often brought in to provide specialized expertise, handle workload spikes, or complete short-term projects. Their roles may include writing code, fixing bugs, integrating systems, and ensuring applications meet performance and security standards.

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

To thrive as a Contract Java Developer, you need strong Java programming skills, experience with object-oriented design, and a solid understanding of software development lifecycles, typically supported by a relevant degree or certifications. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, and version control systems like Git is commonly required. Excellent problem-solving, adaptability, and clear communication skills help you efficiently integrate with new teams and projects. These abilities ensure you can quickly deliver high-quality, maintainable code that meets client requirements in a dynamic contract environment.

What are some common challenges faced by contract Java developers when integrating with existing teams and projects?

Contract Java Developers often need to quickly adapt to unfamiliar codebases and team workflows, which can be challenging given tight project timelines. Effective communication is essential, as they must coordinate with permanent staff, understand project requirements, and align with established coding standards and deployment processes. Many contractors also need to manage multiple projects or clients simultaneously, requiring strong time management skills. Proactively seeking clarity on expectations and leveraging onboarding resources can help ease the integration process.

What is the difference between Contract Java Developer vs Contract Software Engineer?

AspectContract Java DeveloperContract Software Engineer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science or related, various programming certifications
Work EnvironmentDevelopment teams, client sites, remote optionsDevelopment teams, client sites, remote options
Industry UsageTech, finance, healthcare, e-commerceTech, finance, healthcare, e-commerce
Search & Comparison IntentFocus on Java-specific roles, Java projectsBroader software development roles, multiple languages

Contract Java Developers specialize in Java programming and are often sought for Java-specific projects. Contract Software Engineers have a broader scope, working with multiple programming languages and technologies. Both roles are common in tech industries and share similar work environments, but the Java Developer role is more focused on Java expertise.

Are Contract Java developers still in demand?

Contract Java developers remain in demand due to ongoing needs for software development, system integration, and enterprise applications. Skills in frameworks like Spring and experience with cloud platforms can enhance job prospects in this field.

What are the most commonly searched types of Java Developer jobs in Thornhill, ON?

The most popular types of Java Developer jobs in Thornhill, ON are:

What cities near Thornhill, ON are hiring for Contract Java Developer jobs?

Cities near Thornhill, ON with the most Contract Java Developer job openings:

Contract Java Developer jobs near you
Infographic showing various Contract Java Developer job openings in Thornhill, ON as of August 2026, with employment types broken down into 100% Contract. Highlights an 100% In-person job distribution.

UI React Developer (QTS)

Toronto, ON • On-site

Jay Analytix
See more jobs at Jay Analytixexternal

Full-time

Re-posted 27 days ago

Key responsibilities

  • Code, test, debug, implement, and support real-time risk and PnL applications using React and Redux.

  • Design and build responsive, data-intensive user interfaces, including real-time intraday reporting and visualizations.

  • Collaborate with Capital Markets Trading and Quant teams throughout all stages of the software development lifecycle.

Job description

UI React Developer (Redux)

Job Type: Contract 

Duration: 1+ Year Long Term 

Location: Toronto, Ontario (Hybrid 3 days in office)

Experience: 7+ Years

Only candidates with work authorization in Canada may apply.

What Is the Opportunity?

We are seeking a UI React Developer with strong Redux experience to join the Quantitative and Technology Services (QTS) team, developing, improving, and supporting strategic applications within the RAMPP (Risk, Analytics, Modelling, Pricing & Processing) organization. You will work with best-in-class front-end technologies to build applications that consume large quantities of data and present key metrics and statistics to Capital Markets business clients.

You will tackle complex problems and deliver robust, efficient, and strategic UI solutions with lasting impact on the RAMPP organization and Capital Markets businesses. Working closely with Capital Markets trading teams, you will help define project requirements, coordinate testing efforts, and provide implementation support. Excellent communication, organizational, and leadership skills are essential.

What Will You Do?
  • Code, test, debug, implement, and support real-time risk and PnL applications using React and Redux, serving a wide range of business units within the Capital Markets space
  • Design and build responsive, data-intensive user interfaces, including real-time intraday reporting and real-time visualizations
  • Manage complex application state using Redux, Redux-Observable, and RxJS to handle high-volume, real-time data streams
  • Analyze, debug, and resolve production issues related to data flows, application performance, system latency, and infrastructure/network outages
  • Collaborate with Capital Markets Trading and Quant teams through all stages of the software development lifecycle, eliciting and implementing business requirements and owning projects from inception to completion
  • Proactively identify operational risks, control deficiencies, and opportunities for automation to increase productivity and enhance user experiences
  • Demonstrate project implementations to key stakeholders, including senior management, executives, and wider QTS technology teams
  • Contribute to the internal UI sharing economy and the broader UI development community, supporting the overall vision of QTS' UI/UX strategy
What Do You Need to Succeed? Must Have
  • Bachelor's or Master's degree, preferably in Computer Science or a related field
  • Strong hands-on experience with React 16+ and Redux in production environments
  • Experience with RxJS 6+ and reactive/functional programming patterns
  • Solid working knowledge of design patterns, data structures, algorithms, threading and concurrency, ES2020+, and front-end best practices
  • Experience building robust, scalable, test-driven front-end platforms utilizing modern HTML5 APIs and PWA techniques and technologies such as Web Workers, Service Workers, CacheStorage, IndexedDB, ES6 Proxies, and Sockets
Nice to Have
  • Experience working in the financial industry, ideally Capital Markets
  • Working knowledge of TypeScript 4+
  • Experience with Redux-Observable (Observables), Redux Toolkit, and state management at scale
  • Aptitude for UI design and building strong user experiences; experience with design tools is a bonus
  • Demonstrable knowledge of Cypress/Playwright and/or Jest for building robustly tested, test-driven products
  • Familiarity with DevOps tooling such as JIRA, Jenkins, Docker, and Kubernetes, including JavaScript build tools/pipelines such as Vite, Bun, Babel, Webpack 5, Rollup, and ESBuild
  • Working knowledge of functional architectures and related tools such as Lodash/fp and Ramda
  • Knowledge of OpenFin and Electron-based architectures
  • Experience with server-side development in Node.js, Java 11, or Python
  • Working knowledge of SQL and Solace
  • Familiarity with additional front-end frameworks, tools, and paradigms such as D3, GraphQL, MobX, React Query, and AG-Grid
  • Experience with Agile, Scrum, and Kanban methodologies
  • Quick learner with the aptitude to pick up new technologies and business knowledge
  • Highly motivated, able to work independently and effectively, with a collaborative attitude