Support engineer Jobs in Oakville, 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. Position Overview As a Full Stack Support Engineer, you will take ownership of complex application issues and lead the enhancements that keep key banking systems running reliably. You will partner with technology and business teams to define system requirements, resolve high-impact problems, and guide analysts across the function. This role sits at the center of Citi's technology operations, where your expertise directly shapes the performance and stability of applications that support the business.

Responsibilities

• Lead application support for complex, high-impact systems, resolving issues through detailed analysis of business processes and system logic.
• Partner with multiple technology teams to integrate systems and functions, ensuring enhancements align with business goals.
• Define the scope and objectives for complex application enhancements, translating business needs into clear technical requirements.
• Work with product owners, business analysts, and systems analysts to determine system impacts and support needs.
• Identify risks, vulnerabilities, and security issues within applications, and recommend practical solutions to address them.
• Apply SQL, ETL tools, Unix or shell scripting, and Python to diagnose issues and maintain microservices-based application environments.
• Mentor and guide junior support analysts, allocating work and sharing technical expertise across the team.
• Communicate the business impact of technical decisions to stakeholders, influencing functional outcomes.

Required Qualifications & Skills

• 6+ years of experience leading application support, ideally within banking or financial services.
• Strong problem-solving and strategic thinking skills, developed through leading requirement-gathering efforts across multiple large-scale development projects.
• Demonstrated leadership and relationship-building skills, with a service-oriented approach to working in a fast-paced environment.
• Strong working knowledge of SQL, applied to analyze data and resolve complex application issues.
• Solid understanding of ETL processes, combined with hands-on Unix or shell scripting skills for application troubleshooting.
• Working knowledge of Python and a clear understanding of microservices-based architecture.
• Bachelor's degree in a relevant field, with availability to work occasional weekends during critical incidents, for which compensatory leave is provided.

Beneficial Skills & Qualifications

• More than 10 years of total professional experience.
• Hands-on experience with ETL tools such as Spark or Abinitio.
• Master's degree in a relevant field.

What We Offer

Joining Citi's technology organization means working at the center of a global bank's operations, with the scope to lead, mentor, and make a measurable impact on the systems that keep the business running.

• A hybrid working model, with 3 days in the office and 2 days working remotely, to support work-life balance.
• Opportunities to mentor junior analysts and build your leadership profile within a global technology team.
• Access to learning and development programs that support long-term career growth.
• Compensatory leave provided for any weekend work completed during critical incidents.
• Collaboration with technology and business teams across Citi's global network.
• Financial wellbeing and family support programs designed to support you beyond the workplace.

Apply now to lead application support and help shape the technology that powers Citi's global operations. ------------------------------------------------------

Job Family Group:

Technology ------------------------------------------------------

Job Family:

Applications Support ------------------------------------------------------

Time Type:

Full time ------------------------------------------------------

Primary Location Full Time Salary Range:

$120,800.00 - $170,800.00 ------------------------------------------------------

Most Relevant Skills

Please see the requirements listed above. ------------------------------------------------------

Other Relevant Skills

Ab Initio, Apache Spark, Data ETL, Microservices Architecture, Python (Programming Language), Structured Query Language (SQL), Unix Shell. ------------------------------------------------------

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. ------------------------------------------------------ This job opening is for an existing job vacancy. ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. *If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review [Accessibility at Citi](#). View Citi’s [EEO Policy Statement](#) and the [Know Your Rights](#) poster.