Senior Java/JEE Full-Stack Developer

Our Client is seeking experienced Senior Software Developers to support the design, development, integration, testing, and implementation of complex enterprise applications.

The successful candidates will bring extensive experience developing large-scale, multi-tier systems across multiple platforms and will provide technical leadership throughout the complete software development lifecycle.

Key Responsibilities

• Collaborate with business analysts and stakeholders to gather, assess, and document technical and business requirements.
• Develop conceptual, logical, and physical solution architecture and design artifacts.
• Support architecture checkpoints, technical reviews, and solution design walkthroughs.
• Design, develop, code, integrate, and implement enterprise-level application components.
• Build and integrate REST APIs, SOAP/WSDL web services, JSON/XML messaging solutions, user interfaces, and third-party services.
• Develop unit and integration test cases and perform comprehensive system testing.
• Collaborate with testing teams on functional, performance, security, and vulnerability testing.
• Debug, refactor, optimize, and enhance existing application components.
• Identify and coordinate the resolution of technical issues, production incidents, and system defects.
• Prepare technical documentation, user guides, deployment instructions, and knowledge-transfer materials.
• Lead code reviews, design walkthroughs, and technical knowledge-transfer sessions.
• Provide technical guidance and leadership to developers, systems analysts, testers, and external consultants.
• Estimate development effort, manage technical deliverables, and ensure project milestones are achieved.
• Support multiple concurrent assignments while maintaining quality and delivery standards.

Mandatory Qualifications

• Minimum of 10 years of demonstrated experience in IT systems analysis, design, development, integration, testing, and implementation.
• Extensive experience working in multi-platform environments, including web, desktop, mobile, mainframe, micro/mini systems, and multi-tier enterprise applications.
• Advanced experience with Java and enterprise technologies, including:
  • JSP and Servlets
  • JEE
  • EJB
  • JNDI
  • JDBC
  • JMS
  • Struts Framework
• Strong experience developing and integrating:
  • REST APIs
  • SOAP and WSDL web services
  • XML and JSON messaging
  • Web components and user-interface frameworks
  • Third-party applications and services
• Extensive experience with Oracle RDBMS, including Oracle versions 9, 10, 11, and/or 12, as well as PL/SQL development.
• Experience with enterprise technologies and platforms such as:
  • WebSphere
  • WebLogic
  • Tomcat
  • Apache
  • Oracle Designer
  • SUN Solaris
  • Windows Server 2008/2012
  • .NET
  • VPN
  • PKI
  • LDAP
• Experience using development and solution-design tools such as MS Visio, PowerDesigner, Eclipse, IntelliJ IDEA, Atom, and Visual Studio Code.
• Strong knowledge of source-code management, application packaging, release management, and deployment tools.
• Demonstrated experience analyzing, designing, coding, and integrating full-stack, multi-tier enterprise solutions.
• Proven experience debugging, refactoring, optimizing, and improving complex systems.
• Ability to assess client requirements, research technical alternatives, develop recommendations, and lead solution-design initiatives.

Technical Leadership

• Demonstrated experience leading development teams in the delivery of enterprise-level IT solutions.
• Ability to conduct solution-design reviews, code walkthroughs, and technical quality assessments.
• Experience providing leadership and direction to developers, analysts, testers, and consultants.
• Strong knowledge of project-management methodologies, work estimation, analytical processes, and ITIL best practices.
• Proven ability to lead complex IT projects and deliver within established timelines, scope, quality, and budget parameters.

Communication and Stakeholder Management

• Strong written and verbal communication skills, with the ability to explain technical solutions to both technical and non-technical stakeholders.
• Experience preparing technical reports, design documents, architecture artifacts, implementation guides, and user documentation.
• Strong consulting, negotiation, collaboration, and interpersonal skills.
• Ability to manage relationships with internal teams, external stakeholders, and service-delivery partners.
• Proven ability to manage multiple priorities and meet demanding project deadlines.
• Demonstrated ability to work effectively as part of a multidisciplinary project team.

Public-Sector Experience

• Previous Ontario Public Service or broader Canadian public-sector experience is considered an asset.
• Understanding of government strategies, directives, policies, procedures, and technology standards.
• Knowledge of public-sector architecture-review processes, security requirements, privacy standards, and architecture checkpoints.