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Citi Logo Citi · IT - Software Development

Lead Full Stack Developer

Canada, Mississauga 120800.00 - 170800.00 USD / Year · Job Posted March 13, 2026
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Job Description

As a Full Stack Development lead within our team, you will take on a critical leadership role, driving the technical direction and successful delivery of mission-critical web applications. You will be responsible for architecting robust systems, mentoring a talented team of engineers, and ensuring the highest standards of code quality and innovation. This role requires a blend of deep technical expertise, strategic thinking, and proven leadership capabilities to guide projects from conception to deployment in a complex, enterprise environment.

Job Responsibility

  • Technical Leadership & Architecture: Lead the architectural design and development of complex, scalable, and resilient full-stack applications, with a primary focus on Java, Spring Boot, and modern front-end frameworks
  • Team Mentorship & Guidance: Mentor, coach, and lead a team of developers, fostering a culture of technical excellence, collaboration, and continuous improvement. Guide team members in code quality, best practices, and career development
  • Project & Delivery Ownership: Oversee the entire software development lifecycle for key projects, from technical requirements gathering and design to coding, testing, and deployment. Ensure on-time, high-quality delivery
  • Stakeholder Collaboration: Partner with product managers, business stakeholders, and other technology teams to define technical roadmaps, influence product strategy, and translate business requirements into robust technical solutions
  • Hands-On Development: Remain hands-on and contribute to the development of complex features, back-end services, and APIs, setting a high standard for the team
  • Best Practices & Innovation: Champion and enforce software development best practices, including agile methodologies, CI/CD, automated testing, and secure coding standards. Drive the evaluation and adoption of new technologies and industry trends
  • System Optimization & Health: Take ownership of application performance, scalability, and reliability. Lead efforts to troubleshoot, debug, and optimize existing systems

Requirements

  • Extensive Experience: Significant professional experience in designing, developing, and deploying enterprise-scale applications
  • Leadership & Mentorship: Proven experience in a technical leadership role, including mentoring developers, conducting code reviews, and guiding team decisions
  • Architectural Expertise: Demonstrated ability to design and implement complex, distributed systems and microservices architectures
  • Back-End Expertise: Expert-level proficiency in Java and the Spring ecosystem (Spring Boot, Spring Cloud, Spring Security, Spring Data, reactive spring)
  • Deep experience in designing, building, and consuming RESTful APIs and microservices
  • Extensive experience with relational databases (e.g., PostgreSQL, Oracle) and NoSQL databases (e.g., MongoDB)
  • Strong understanding of ORM frameworks (e.g., JPA/Hibernate) and data modeling
  • Proficiency with build tools like Maven or Gradle and CI/CD pipelines
  • Front-End Expertise: Strong proficiency in modern front-end technologies (e.g., HTML5, CSS3, JavaScript/TypeScript)
  • Hands-on experience with modern JavaScript frameworks, particularly ReactJS and state management libraries like Redux
  • General Qualifications: In-depth knowledge of version control with Git and collaborative development workflows
  • Excellent problem-solving, analytical, and strategic thinking skills
  • Superior communication and interpersonal skills, with the ability to articulate complex technical concepts to both technical and non-technical audiences

Nice to have

  • Experience with GraphQL API design and implementation
  • Experience with containerization (Docker) and orchestration (Kubernetes, OpenShift)
  • Experience with public cloud platforms (AWS, GCP, Azure)
  • Knowledge of the financial services industry and experience building applications in a regulated environment
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