Lead developer Jobs in Old toronto, ON

As a Lead Java Engineer on Citi's distributed calculation platform, you will design and build the software that drives 500 million risk and suitability calculations every single day. You will work on a system that coordinates hundreds of thousands of pods, tens of thousands of compute cores and hundreds of terabytes of memory, partnering closely with software engineers, DevOps teams and customers to keep it fast, secure and reliable. Beyond the code, you will mentor engineers and help shape the long-term direction of one of Citi's most demanding engineering platforms.

Responsibilities

• Design and build Java-based software that powers a high-performance calculation engine processing hundreds of millions of distributed calculations every day.
• Develop new platform features without slowing down a system where small inefficiencies are multiplied across millions of calculations.
• Solve complex distributed computing problems, such as moving small amounts of data efficiently across huge numbers of machines.
• Lead improvements to the CI/CD pipeline that enable frequent, reliable software releases for a SaaS platform.
• Build an API that gives customers controlled access to configure how the platform runs for their own use cases.
• Create new testing mechanisms that support rapid, dependable releases across a daily microservice deployment cycle.
• Mentor and coach engineers through code reviews, technical guidance and career development support.
• Partner directly with customers to resolve issues and optimize large-scale distributed workloads.

Required Qualifications & Skills

• 6+ years of professional software development experience with Java.
• Experience building and improving CI/CD pipelines using DevOps practices.
• Practical experience with Java frameworks such as Spring, Spring Boot or Quarkus.
• Working knowledge of cloud platforms, including AWS, Azure or GCP, and containerization tools such as Docker and Kubernetes.
• Experience designing, building and maintaining large-scale distributed systems and RESTful APIs.
• Solid command of object-oriented programming, design patterns and test automation using frameworks such as JUnit and Mockito.
• Experience working in Agile/Scrum environments, with a Bachelor's or Master's degree in Computer Science, Engineering or a related field.

Beneficial Skills & Qualifications

• Prior experience operating as a lead engineer, though strong individual contributors are equally encouraged to apply.
• Exposure to NoSQL databases such as MongoDB or Cassandra.
• Familiarity setting up testing frameworks such as Cucumber.

What We Offer

Joining this team puts you at the center of one of Citi's most technically demanding platforms, working alongside engineers and DevOps specialists who operate at genuine global scale.

• Work in a hybrid model with three days in the office and two days working remotely each week.
• Take on technical ownership and help shape the long-term direction of a platform used across Citi.
• Access structured learning and development opportunities to deepen your expertise in distributed systems and cloud engineering.
• Collaborate with engineering and DevOps teams across multiple regions on a platform operating at global scale.
• Benefit from wellbeing, financial planning and family support programs designed to support your life outside of work.

Apply now to help lead the engineering behind one of Citi's largest distributed computing platforms. ------------------------------------------------------

Job Family Group:

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

Job Family:

Applications Development ------------------------------------------------------

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

For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------

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.