The Analytical Calculation Engine (ACE) Development Team is a group within Citi Financial Risk Technology, responsible for developing and implementing the applications used for derivatives credit risk and exposure calculations Firm-wide.

The team's primary focus is the development, testing, deployment, and maintenance of the production derivatives credit risk application, used for internal risk management and regulatory capital purposes.

The Counterparty Credit Risk Senior Application Developer position is a senior role that will interface closely with Quant and Front Office technology teams to integrate pricing models and workflow enhancements within the ACE application.

There will be exposure to a wide range of technological frameworks, including distributed computing architecture.

The role will involve tasks such as:Developing and maintaining the Counterparty Credit Risk applications, leveraging in-house Python and C++ model libraries.

Supporting transition to cloud Contributing to the codebase to optimize performance and consolidate the workflow across asset classes.

Extending existing test suites, including unit, regression, and integration tests.

Performance and memory profiling.

Assisting in the execution of impact analysis testing runs.

Identifying and developing calculation optimization improvements Working with Front Office teams to integrate quant library/technology enhancements into the codebase.

Utilizing in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgements.

Serving as advisor or coach to new or lower-level developers.

Exercising independence of judgement and autonomy.

Acting as SME to senior stakeholders and /or other team members.

Qualifications:Expert in Python Ability to write clean, tested highly efficient code.

Proven track record of developing and supporting analytics library for derivatives pricing and risk.

Experience developing software for Windows and Linux.

Good command of scripting using UNIX Shell (ksh, bash, etc).Experience working collaboratively within development teams.

DevOps experience, deep understanding of SDLC and CI/CD (GIT, Jenkins preferable).Outstanding analytical and problem-solving skills.

Thorough and detailed approach to accuracy are essential.

Ability to follow procedures and operate within strict guidelines.

Excellent verbal and written English.

Ability to take ownership and proactively follow up on issues.

Ability to work in a team and to work well under pressure.

Advantage:Experience in onboarding risk applications to cloud In-depth knowledge of Rates, Credit, Equities, Commodities, FX derivatives.

Experience working on Regulatory based projects such as Model Risk, Basel, Stress Testing, FRTB, CCAR is an advantage.

Solid mathematical finance and statistical analysis skills.

Familiarity with Numerical analysis/Monte-Carlo methods.

Knowledge of probability and stochastic calculus.

Education:Bachelor's or Master’s degree or equivalent in computer science, mathematics, engineering or physics.

This job description provides a high-level review of the types of work performed.

Other job-related duties may be assigned as required.------------------------------------------------------Job Family Group: Technology------------------------------------------------------Job Family:Applications Development------------------------------------------------------Time Type:Full time------------------------------------------------------Primary Location:New York New York United States------------------------------------------------------Primary

Location: Full Time

Salary: Range:$142,320.00 - $213,480.00
In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards.

Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs.

Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays.

For additional information regarding Citi employee benefits, please visit citibenefits.com.

Available offerings may vary by jurisdiction, job level, and date of hire.------------------------------------------------------Most Relevant Skills Please see the requirements listed above.------------------------------------------------------Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------Anticipated Posting Close Date:Feb 16, 2026------------------------------------------------------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.

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