Network security engineer Jobs in Mississauga, ON

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.

As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services.

Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We’ll enable growth and progress together.

Citi Markets Technology is seeking a highly motivated IT professional to join our Global Markets Platform team located in Mississauga. This is an opportunity to join the global team providing connectivity services across global markets electronic trading infrastructure. This role will involve collaboration with electronic-trading platforms and infrastructure dealing with a wide range of teams including Traders, Application Developers, Product Owners, and Engineering.

Markets Technology at Citi is undertaking a bold, multi‑year transformation to build a best‑in‑class global trading platform across execution, prime, clearing and cross‑products. We are re‑engineering our technology estate to achieve world‑leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernized post‑trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise. As part of the team, you’ll collaborate closely with high‑caliber engineers and deeply engaged business and product partners - working together to define and deliver the next generation of Markets technology at Citi.

Position Overview:

The Network Technical Project Manager is a senior-lead position responsible for the successful execution of complex, strategic, enterprise-wide technology initiatives critical to Citi’s Markets business growth, regulatory compliance, operational efficiency and business outcomes.

Interface with Citi’s Markets business, technology application teams and clients/vendors, understand functional business and technical connectivity requirements, translate the business/application/technical connectivity requirements into actionable engineering change requests for implementation by Network Engineering, Firewall & Proxy Engineering, Load Balancer Engineering and System Administrators and Engineering.

Requires in-depth understanding of markets low latency electronic trading technology suits of applications and infrastructure areas collectively integrate within the sub-functions as well as coordinate and contribute to the objectives of the entire function. Proactively identify risks, issues, and blockers; escalate with precision and propose credible mitigations before they become crises.

Network Design & Implementation:

• Interface between Citi’s Markets Technology applications and all Infrastructure Engineering teams such as Network & Firewall Engineering, Unix and Linux Server Engineering, Middleware Solace and Tibco engineering.
• PM Design and implement scalable, secure, and highly available low latency trading network architectures.
• Drive book of work by coordination, planning, configuration, and deployment connectivity engineering solutions through (routers, switches, firewalls, load balancers, Proxy Servers & Zscaler) from various vendors (, Cisco, Juniper, Palo Alto, F5).
• Develop and maintain comprehensive trading applications connectivity documentation, including diagrams, systems and network configurations, and Citi procedures.
• Diagnose and resolve complex network issues, including connectivity problems, performance degradation, and security incidents.
• Participate in after-hours and weekend support for service validations during network change activities.
• Appropriately assess risk when business decisions are made, demonstrating consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Key Skills and Experience required:

• Active collaboration with all parties is required to be successful.
• Effectively collaborate with the Markets-Tech Electronic Trading organization (our clients), steer other technology organizations directly or through influence, and love rolling up their sleeves and working as an individual contributor.
• Proven experience in technology project management, business analysis in application connectivity through network devices, data center migrations, and new connectivity network builds is essential.
• The role is very broad requiring a resource that is not afraid to do new things and be challenged on a regular basis with a can-do attitude and an engineering mindset.
• Widened communication and diplomacy skills are required to guide, influence and convince others, in particular colleagues in other areas and occasional external customers. Has responsibility for volume, quality, timeliness and delivery of end results of an area.
• Own and drive the creation of business/ functional markets trading applications and servicing infrastructure connectivity requirements.
• Documenting solutions and managing end to end application architectural and connectivity flows, and the upstream and downstream dependencies.
• Integrate modern tools and emerging technologies including AI‑enabled automation, collaboration platforms, to enhance productivity and streamline delivery workflows.
• Proactively identify risks, issues, and blockers; escalate with precision and propose credible mitigations before they become crises.
• Maintaining Book of Work and facilitating prioritization discussions with key business and technology stakeholders.
• Document connectivity requirements and support service validation testing, release, and implementation activities. Identify, plan, and execute connectivity projects.
• Develop and publish content for Senior management reporting, presentations, town halls etc.
• Plan, coordinate, and drive day‑to‑day delivery of complex technology initiatives. Track milestones against target dates and provide regular status updates to stakeholders.
• Manage project scope, assess change requests, and clearly communicate impact on timelines, costs, and risks to Global Head of Platforms.
• Partner daily with business stakeholders, technology leads, product teams, and clients. Manage expectations across global teams and operate effectively in ambiguous, high‑pressure environments.
• Proactively identify, manage, and escalate project risks and issues. Define and drive risk mitigation strategies, including remediation plans.
• Create and maintain core project management artifacts and documentation. Apply lessons learned to improve future delivery and processes.
• Leverage automation and AI‑enabled tools to improve productivity, reporting, and delivery discipline
• Understanding Business priorities and working as a liaison between Business and Engineering teams.
• Excellent oral and written communication skills are essential to effectively communicate issues, risks, and progress on complex processes to multiple stakeholders.
• Partner with technology teams to oversee projects, execute plans and ensure critical deliverables are met
• Experience in Capital Markets Low Latency Network Infrastructure workflows will be highly relevant to this role.
• Hands‑on experience leveraging AI and automation for productivity with knowledge of emerging AI use cases in infrastructure Technology functions highly desirable.
• Proven ability to manage complex and variable issues with substantial potential impact by weighing various action plans and balancing potentially conflicting needs.
• Demonstrated ability to effectively use complex analytical, interpretive, and problem-solving techniques.
• Strong analytical, documentation, and problem‑solving skills with ability to translate complex requirements into clear, actionable applications connectivity designs.
• Stellar Communicator, written and verbal communication, is a genuine differentiator. Tailors message, medium, and tone to audience with precision and impact.
• Strong influencing and negotiation skills; ability to build and maintain effective networks and relationships.
• Relentlessly Organized, nothing falls through the cracks. Maintains meticulous control of actions, decisions, risks, and dependencies across complex architectural landscapes.
• Familiarity with SDLC and Agile development methodologies including tools such as Jira & Confluence

Education:

• Bachelor’s degree in Computer Engineering, Information Technology Required.
• Master’s degree in Computer Science, Information Technology Preferred
• Project Management Professional Certification - Highly Preferred
• Cisco Certifications, Palo Alto Network Certifications, and/or Checkpoint Certifications is required
  

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

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Job Family Group:

Technology

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Job Family:

Infrastructure

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$120, - $170,

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

IT Network Management, Network Design, Network Project Management, Project Management.

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) 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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