Sereneaid

Position: Senior Full Stack Java Developer

Client:Community Services Cluster, Ministry of Public and Business Service Delivery and Procurement, Government of Ontario

Location:777 Bay Street, Toronto, ON

Contract:September 28, 2026 – August 30, 2027

Openings:2

Security Clearance:No clearance required

Position Overview

We are seekingtwo Senior Software Developers – Full Stackto support the development, integration, enhancement, testing, deployment, and maintenance of business-critical web applications within the Ontario Public Sector.

Experience deliveringsecure, scalable, responsive, and AODA-compliant web applicationsis highly valued.

Key Responsibilities

• Design, develop, configure, integrate, test, debug, document, deploy, and maintain enterprise software applications.
  
• Translate technical system specifications and business requirements into working, tested applications.
  
• Develop and maintainJava/J2EE web-based applicationsusing n-tier architecture.
  
• Develop front-end interfaces and integrate them with back-end services and APIs.
  
• Design, construct, consume, and integrateRESTful and SOAP web services.
  
• Develop and maintain data pipelines involving extraction, transformation, and loading activities.
  
• Develop database solutions and perform SQL scripting usingOracle and SQL Server.
  
• Work with relational database technologies and RDBMS concepts.
  
• Develop reusable, self-contained, testable software components and modules.
  
• Apply current software architecture principles, design patterns, and development standards.
  
• Troubleshoot and resolve application, integration, deployment, migration, and production issues.
  
• Support application implementation, conversion, migration, and post-implementation activities.
  
• Participate directly throughout theAgile/iterative Software Development Life Cycle (SDLC).
  
• Conduct and participate in technical/design walkthroughs with project teams.
  
• Collaborate with developers, architects, business stakeholders, SMEs, and other IT professionals.
  
• Develop technical and system documentation as required.
  
• Support continuous integration and deployment activities.
  
• Ensure applications are designed for performance, scalability, maintainability, and reliability.
  
• Ensure solutions comply with applicable accessibility requirements, includingAODA.
  
• Assist with reviewing, analyzing, modifying, testing, and debugging installation/deployment scripts.
  
• Provide technical assistance and support for software packages and applications.
  

Requirements Mandatory Technical Skills

Candidatesmust have hands-on experience with the following technologies:

• JAVA
  
• J2EE
  
• JSF
  
• HTML / DHTML
  
• XML / XSL
  
• Experience withServlets, EJB, Tomcat and/or WebLogicis required/desirable within the broader technology stack.
  

Open-Source Frameworks & Libraries

• Spring
  
• myBatis
  
• jQuery
  
• Experience with modern web development frameworks and reusable components.
  

Full-Stack Web Development

• Front-end and back-end application development.
  
• Web architecture and n-tier application architecture.
  
• Front-end and API integration.
  
• Development of reusable, self-contained, and testable UI modules/components.
  
• Ability to develop front-end code capable of querying and consuming APIs.
  
• Understanding of UX/UI principles.
  

Database / SQL

• Oracle Database
  
• Oracle SQL scripting
  
• Relational Database Management Systems (RDBMS).
  
• Experience withSQL Server.
  
• Database design, implementation, integration, and management.
  

APIs & Web Services

• REST / RESTful APIs
  
• SOAP web services
  
• Web Services development and integration.
  
• API design, development, consumption, and front-end integration.
  
• Swagger/OpenAPI knowledge is an asset