Top Tech Jobs & Startup Jobs in Toronto

Provides technical leadership for application development and AI engineering. Designs and scales resilient distributed systems using microservices, leads software architecture and innovation, and integrates AI development tools such as GitHub Copilot and Devin. Builds AI applications with Google AI SDK and Gemini, agentic workflows using LangGraph, advanced RAG systems, vector databases, and agent-to-agent communication. Partners with product, design, and business stakeholders while guiding agile engineering teams.

Design, build, and deploy high-performance asynchronous Java microservices and reactive backend systems. Develop Kafka event-streaming pipelines, Elasticsearch search capabilities, and MongoDB persistence solutions. Lead test-driven development with JUnit, code reviews, coding standards, and engineering quality initiatives. Collaborate with product, infrastructure, and architecture teams to deliver scalable features, while mentoring mid-level engineers and analysts.

Provides independent second-line oversight of non-trading market risk, including interest rate risk in the banking book and Treasury Investments. Reviews and challenges risk identification, limits, assumptions, models, transfer pricing, stress-loss limits, and management actions. Coordinates risk frameworks, policies, procedures, and new-activity reviews while assessing risk-management processes for soundness and limitations. Contributes to the overall strategy for non-trading market risk programs and ensures alignment with enterprise risk management and regulatory requirements.

Owns mission-critical production applications, ensuring stability, performance, availability, and service-level compliance. Responsibilities include monitoring application health, conducting reconciliations and handovers, managing incidents, coordinating releases and enhancements, identifying technology risks, supporting cloud and containerized environments, and collaborating with technology, business, and vendor teams. The role also serves as a senior escalation point, subject matter expert, and mentor for junior analysts.

Develop and support full-stack Java and Angular applications, participating in feasibility analysis, design, development, testing, implementation, and user support. The role analyzes complex application issues, recommends programming and security solutions, consults with users and technology teams, supports operational standards, assesses risk, and mentors junior analysts. It requires autonomy, stakeholder advising, and experience with Java, Angular, Python, SQL, CI/CD, DevOps, and software systems analysis.

Build and maintain full stack applications, common services, and user interfaces for Citi’s Oracle Ledger Program. Develop Java backend services, Angular or React frontends, REST APIs, and Selenium test automation. Lead software delivery from analysis through implementation, provide advanced L3 production support, resolve complex issues, collaborate with business and technology teams, uphold engineering standards, and mentor developers in a global support model.

Design and build scalable Java backend systems, architect microservices and REST APIs, write and review production code, lead development initiatives, mentor engineers, establish coding standards, evaluate technologies, and shape technical roadmaps with product stakeholders. The role also involves researching AI and machine learning tools to improve engineering practices and system design.

Designs, develops, and optimizes high-performance, low-latency Java microservices for an equities electronic trading platform, especially Smart Order Router technology. Responsibilities include routing logic, venue analysis, system architecture, code reviews, testing, deployment improvements, monitoring, reconciliation, recovery, and technical collaboration with product and quantitative teams. The role also addresses complex trading-system challenges while maintaining regulatory compliance and operational risk controls.

Develop and maintain backend Java applications for Citi’s Citi Velocity capital markets platform. Responsibilities include application analysis, design, development, testing, implementation, security, production support, and consultation with users and technology teams. The role evaluates complex technical issues, supports business needs, manages development processes, advises junior analysts, and ensures compliance and operational standards. Candidates need strong Java, concurrency, OOP, OOAD, SQL, Linux, build-tool, and backend development experience.

Develop and maintain Java Spring Boot microservices and Angular applications supporting lending workflows. Build RESTful APIs and Kafka-based event-driven services, deploy containerized applications on AWS ECS, and manage CI/CD with GitHub Actions. Configure batch scheduling with Autosys or cron, work with relational and NoSQL databases, enforce application security, monitor production systems, and support the full software development lifecycle. Collaborate with technical and business stakeholders while contributing to engineering standards, risk management, and operational support.