Full Stack Technology Lead - Vice President

Citigroup Inc.; Mississauga; On-site; CAD 120,000 - 180,000; Full time

Job summary

Citi in Mississauga is seeking a Senior Full Stack Tech Lead to guide the design and implementation of scalable applications in collaboration with the Technology team. You will translate complex business needs into robust architectures and lead by example across the SDLC using modern React, TS, and Python stacks.

You will drive AI-enabled development, establish guardrails for secure code, and own CI/CD pipelines, Docker/Kubernetes deployments, and scalable system design.

Qualifications

• BS or higher in computer science or related field.
• 6+ years in full-stack development with modern frameworks.
• Strong experience designing scalable systems and APIs.

Responsibilities

• Design, develop and maintain scalable full-stack applications using ReactJS, Typescript and Python.
• Translate complex business requirements into technical architecture and design documents.
• Contribute to system architecture decisions (monolith vs microservices, database design, API strategies).
• Support development strategies and CI/CD pipelines, ensuring smooth release processes.
• Lead by example in using Claude Code as a primary development accelerator and tooling.
• Define guardrails, review processes, and quality gates for AI-generated code.

Skills

ReactJS

Typescript

Python

API design

System architecture

DevOps

CI/CD

Distributed systems

AI integration

Quality gates

Education

Bachelor's degree

Master's degree

Tools

Docker

Kubernetes

Terraform

CI/CD tooling

Job description

Full Stack Senior Tech lead 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.

Responsibilities

• Design, develop and maintain scalable full-stack applications using ReactJS, Typescript and Python.
• Translate complex business requirements into technical architecture and design documents.
• Contribute to system architecture decisions (e.g., monolith vs microservices, database design, API strategies).
• Support development strategies and CI/CD pipelines, ensuring smooth release processes.
• Lead by example in using Claude Code as a primary development accelerator. From scaffolding features and writing tests to refactoring and documentation generation.
• Design and implement agentic workflows where Claude Code autonomously handles multi-step engineering tasks such as issue triage, code review assistance, PR generation, and deployment scripting.
• Ideate and prototype AI-augmented engineering processes identifying opportunities where agentic AI can reduce manual effort across the SDLC (e.g., automated bug fixes, test generation, dependency upgrades).
• Establish prompt engineering standards and best practices for the team to ensure consistent, high-quality outputs from AI coding tools.
• Evaluate and integrate emerging AI coding capabilities into the team's toolchain, staying ahead of the curve on agentic AI developments.
• Define guardrails, review processes, and quality gates for AI-generated code to ensure security, correctness, and maintainability.

Qualifications

• Deep proficiency in ReactJS (hooks, context, state management libraries such as Redux, Zustand, Recoil).
• At least 6+ years in full-stack development with ReactJS, Typescript.
• Advanced Typescript knowledge or similar language including generics, decorators and advanced typing strategies.
• Strong experience in Python or similar framework (modular architecture, middleware, interceptors, guards, providers).
• Expert in API design principals (REST, GraphQL, versioning, error handling, performance tuning).
• Proficiency with databases (SQL & NoSQL) and related tools.
• Strong command of modern HTML/CSS, responsive design and accessibility standards.
• Experience with design systems and component libraries.
• Familiarity with event-driven architecture, messaging queues (Kafka, RabbitMQ, etc).
• Experience with AI Agent harness led coding.
• Skilled in designing distributed systems and scalable applications.
• Knowledge of DevOps practices (Docker, Kubernetes, Terraform, CI/CD pipelines).
• Hands‑on experience with large‑scale, production‑grade applications.

Education

• Bachelor’s degree/University degree or equivalent experience.
• Master’s degree preferred.

This job description provides a high‑level review of the types of work performed. Other job‑related duties may be assigned as required.

Automated Processing and AI: We use automated processing, including artificial intelligence, for our legitimate business interests to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision‑making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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