Fullstack Developer (.Net/Java/Javascript)

Our client in the public sector is seeking a contract based Fullstack developer to work on Fraud & AML applications. Location: Onsite Toronto Duration: 9 months ext Responsibilities Design, configure, and develop new applications and infrastructure components Implement enhancements, upgrades, and optimizations to existing systems. Build and configure integrations leveraging RESTful APIs, event-driven patterns, and secure messaging interfaces. Conduct unit testing, participate in subsequent testing phases, and resolve technical defects. Develop proofs of concept and prototypes to demonstrate new capabilities, tools, or techniques. Contribute to CI/CD pipeline development using GitLab, GitHub, Jenkins, or OctopusDeploy. Support automated deployment processes and embed DevSecOps and Agile best practices. Support test automation efforts (Selenium WebDriver, Playwright, Cypress, etc.) to accelerate delivery velocity and improve coverage. Support change and release management (ITIL), including defining release strategies, service readiness, and transition activities. Requirements: 6 years’ experience in medium–large technology environments with proven SME-level development expertise. Full Stack Development (5 years): Java, .NET Core, HTML/CSS/JavaScript, and modern frameworks (React, Angular). Backend Engineering: Strong with Java and Python, using frameworks such as Spring Boot and FastAPI. APIs & Integrations: Skilled with RESTful API design, API gateways, Swagger, Postman/RestAssured/SoapUI. Security & Auth: Working knowledge of OAuth 2.0, JWT, SAML, Active Directory, and secure coding/encryption fundamentals. Databases: Experience with SQL Server, MySQL, Sybase, DB2 and NoSQL platforms. Test Automation (5 years): Selenium WebDriver, Playwright, Cypress, TestNG, JUnit, Mocha. CI/CD & DevSecOps: Hands-on with GitLab, GitHub, Jenkins, OctopusDeploy and automated build/deploy practices. Scripting & Integrations: Shell/Bash/PowerShell; experience with ActiveBatch or SSIS. OS & Networking: Familiarity with Linux/Unix/Windows and basic networking protocols (TCP/UDP/MQTT). Cloud: Experience with Azure, AWS, and/or Google Cloud. Performance Testing: Exposure to JMeter, LoadRunner, or Gatling. Agile Delivery: Experience with Jira/Confluence and Agile/DevSecOps workflows. AI-Assisted Development: Basic use of AI coding tools and prompt techniques.

Location: Toronto, Ontario, CA

Posted Date: 11/20/2025