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Citi Logo Citi · IT - Software Development

Java Full Stack Senior Developer

Canada, Mississauga 120800.00 - 170800.00 USD / Year · Job Posted February 02, 2026
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Job Description

The Java Full Stack Senior Developer role is responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities.

Job Responsibility

  • Manage all phases of software development: design, coding, testing, deployment, and support
  • Develop robust front-end UI, back-end services, and API layers with secure and scalable patterns
  • Build microservices, API gateways, integration flows, and modular service components
  • Implement CI/CD pipelines using Tekton, Harness, and Git-based workflows
  • Write automation scripts and configuration tasks using Ansible
  • Deploy and optimize applications on Linux/Windows servers and containerized environments
  • Troubleshoot complex issues across applications, networking, OS, API, and data layers
  • Provide architectural guidance, define best practices, and enforce coding standards
  • Work closely with business users, product owners, and engineering teams to deliver end-to-end solutions
  • Recommend and implement security measures, ensuring secure design and deployment
  • Produce clear documentation, operational runbooks, and technical design artifacts

Requirements

  • Strong experience with Node.js, and Python for back-end and services development
  • Front-end development using React / Angular / Vue (any modern JS framework)
  • Development and consumption of REST APIs, GraphQL, microservices patterns
  • Knowledge of MongoDB, NoSQL/SQL databases, data modeling, indexing, and performance optimization
  • Experience with containers (Docker), container orchestration basics
  • Hands-on knowledge of CI/CD systems including Tekton, Harness, Git-based pipelines
  • Ability to build automated deployments, environment provisioning, and packaging
  • Experience with Ansible for configuration management, automation scripts, and infra-as-code tasks
  • Strong understanding of Linux and Windows operating environments
  • Basic to intermediate understanding of networking concepts (DNS, load balancers, firewalls, routing, ports, protocols, etc.)
  • Knowledge of application monitoring, logging, performance tuning, and memory management
  • Strong debugging and problem-resolution skills across UI, backend, APIs, and infrastructure layers
  • Experience implementing application security, authentication, authorization, and best practices
  • Ability to collaborate in agile environments and contribute to engineering standards
  • Experience managing or participating in successful delivery of end-to-end engineering projects
  • 6+ years of relevant experience
  • Experience in systems analysis and programming of software applications
  • Experience in managing and implementing successful projects
  • Working knowledge of consulting/project management techniques/methods
  • Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements
  • Bachelor’s degree/University degree or equivalent experience
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