Top Tech Jobs & Startup Jobs in Toronto

Lead architecture and hands-on development of enterprise-scale backend services in Java. Define scalable microservices and REST APIs, implement identity and access management (OAuth2/OpenID Connect), optimize performance, integrate content providers, mentor senior engineers, and lead incident resolution and root-cause analysis for critical production systems.

Lead design, development, and maintenance of large-scale Python-based generative AI platforms and services. Collaborate with data science, technical, and business stakeholders to define architecture, deploy GenAI products, enforce coding standards and testing, mentor mid-level engineers, manage multiple projects, and ensure governance, risk, and controls for enterprise-grade AI solutions.

Lead design, development, and deployment of large-scale Python-based Generative AI platforms and services. Drive architecture, stakeholder engagement, vendor partnerships, CI/CD, and governance. Manage multiple complex projects, mentor mid-level engineers, and ensure risk, monitoring, and integration across Citi business units.

Provide L1/L2 production support for Equities Derivatives pre-trade systems, troubleshoot distributed architectures, manage incident lifecycle, monitor intraday and end-of-day processes (risk, PnL, market data), escalate and collaborate with development teams, follow ITIL incident/problem/change processes, participate in on-call rotas, deployments, and disaster recovery testing.

The role involves developing and implementing application systems, conducting feasibility studies, monitoring the development process, and providing support. It requires strong Java experience, RESTful service implementations, and expertise in modern Spring applications and cloud architectures.

Develop and enhance a low-latency, distributed Java-based risk management platform. Integrate with trading systems, design and implement microservices, ensure architectural alignment, mentor junior engineers, and troubleshoot complex system issues.

The role involves developing and maintaining web APIs and backend services using Java and Spring Boot, focusing on microservices and CI/CD in an agile environment.

Provide technical and operational application support across the full lifecycle, acting as liaison between users, developers, and vendors. Diagnose and resolve incidents, participate in releases and post-release validation, analyze risks/security gaps, drive support process improvements, maintain documentation, and support disaster recovery and weekend/shift rotations to ensure application stability and service effectiveness.

Design and implement front-end web applications by converting .NET UI elements to React/HTML5 using Citi standard components. Deliver timely front-end design and code, perform automated testing, integrate with APIs, analyze complex problems, advise stakeholders, mentor junior staff, and ensure security, compliance, and operational support across development lifecycle.

Design and build high-quality margin and collateral software solutions across the full development lifecycle. Collaborate with product and users, implement RESTful APIs, apply TDD and clean-code practices, and work in a fast-paced, global engineering environment using Java/React/Python and SQL.