[Skip to main content](#main-content) [ OpenNash ](https://opennash.com/) / [Jobs](https://jobs.opennash.com/) [ 01 Search jobs](https://jobs.opennash.com/search/)[ 02 Companies](https://jobs.opennash.com/explore/)[ 03 Hiring report](https://jobs.opennash.com/reports/hiring/)[ 04 AI assistants](https://jobs.opennash.com/connect/)[ 05 How it works](https://jobs.opennash.com/methodology/) Commonwealth Bank · Sydney CBD Area +1 more # Data Scientist - Credit Risk Models Sydney CBD Area +1 more Full-time Data & Analytics Listed on Commonwealth Bank’s official careers site. Posted October 27, 2026. Check that it is still open and apply there. [Apply on Commonwealth Bank’s careers site →](https://cba.wd3.myworkdayjobs.com/CommBank_Careers/job/Sydney-CBD-Area/Data-Scientist---Credit-Risk-Models_REQ265707-1) [OpenNash Jobs](https://jobs.opennash.com/) / [Commonwealth Bank](https://jobs.opennash.com/companies/commonwealth-bank/) / Data Scientist - Credit Risk Models ## Job description Build models that uncover how credit risk changes under stress Apply advanced statistical modelling to complex portfolios Turn quantitative analysis into meaningful risk insights Do Work That Matters Credit risk models play a critical role in helping CommBank understand how our lending portfolios could perform as economic conditions change. You’ll work with complex data and challenging modelling problems, combining technical rigour with commercial and risk judgement to understand not simply what a model predicts, but why, what is driving the outcome and what it means for the portfolio. See Yourself in Our Team You’ll join the Model Development Chapter Area within Risk Management, which develops credit risk models and advanced analytics across the Group. We’re recruiting across both Retail and Non-Retail Models, giving you the opportunity to apply your quantitative skills to complex credit portfolios and contribute to the development of stress-testing models and methodologies. The broader Retail Models team develops estimates including Probability of Default (PD), Loss Given Default (LGD) and Exposure at Default (EAD), with models supporting regulatory capital, provisioning and stress-testing activities. Your Impact and Contribution As a Data Scientist - Credit Risk Models, you’ll apply advanced statistical and quantitative techniques to develop and enhance models that help us understand portfolio vulnerabilities, assess resilience under adverse scenarios and support better risk decisions. As such, you may regularly expect to: Develop and enhance credit risk stress-testing models using advanced statistical and quantitative techniques. Apply approaches including predictive modelling, regression, time-series analysis, panel-data methods and macroeconomic modelling. Translate economic and portfolio scenarios into measurable credit-risk impacts, including changes in PD, LGD, exposure and expected credit loss. Analyse model behaviour, sensitivities, limitations and key risk drivers to understand how portfolios may respond under different conditions. Work with large and complex datasets, including incomplete or imperfect data, and determine practical, well-governed approaches to analytical challenges. Use R, Python and SQL, alongside relevant data and cloud platforms, to prepare data, perform analysis and develop models. Translate technically complex modelling outcomes into clear insights that can be understood by both technical and non-technical stakeholders. Document methodologies, assumptions, limitations and modelling decisions clearly, supporting independent review and validation. Partner across the modelling lifecycle with model users, independent model validation and business risk teams. Explore thoughtful uses of AI and emerging tools to improve analysis, learning, documentation and productivity, while maintaining appropriate human judgement and accountability. ### What You’ll Bring You’ll be someone who genuinely enjoys quantitative problem-solving. You’re comfortable getting into the detail of data and statistical methodology, but equally interested in understanding what the results mean and why they matter. ### To this role, you'll bring A tertiary qualification in a quantitative discipline such as Mathematics, Statistics, Econometrics, Engineering or Data Science with a strong academic performance in your quants heavy modules. Experience in quantitative modelling, statistical modelling, data science, econometrics, actuarial science, credit risk analytics or another highly quantitative discipline. Strong foundations in statistical and predictive modelling, with exposure to techniques such as regression, time-series analysis, macroeconomic modelling or machine learning. Hands-on programming capability using R and/or Python, with experience using SQL to analyse complex datasets. The ability to work through ambiguous analytical problems, interrogate imperfect data and reach well-reasoned conclusions. Strong written and verbal communication skills, particularly the ability to explain methodology, assumptions, limitations and the practical implications of your analysis. Curiosity, sound judgement and a willingness to learn new modelling approaches and technologies. Experience with credit risk modelling, PD/LGD/EAD, IRB, IFRS 9 or stress testing would be highly regarded, though not an essential prerequisite. What’s In It for You This is an opportunity to deepen your technical capability in a sophisticated, highly regulated modelling environment where your work has a clear connection to real risk and business decisions. You’ll gain exposure to forward-looking credit risk modelling, complex portfolio and economic scenarios, and experienced practitioners across modelling, validation, risk and the broader business. The role provides visibility beyond the mechanics of building models into how modelling insights inform portfolio management, planning and risk decision-making. You’ll also be part of CommBank’s broader Data Science community, which connects Data Scientists across the Group through shared capability frameworks, learning pathways, tooling and AI-enabled ways of working. Working With Us At CommBank, we're committed to creating an accessible, inclusive and respectful workplace. If you require support or adjustments, please let us know. We welcome applications from people of all backgrounds and we're particularly committed to making a positive difference for Aboriginal and/or Torres Strait Islander Peoples. For support please contact 1800 989 696. If you're already part of the Commonwealth Bank Group (including Bankwest, x15ventures), you'll need to apply through Sidekick to submit a valid application. We’re keen to support you with the next step in your career. We're aware of some accessibility issues on this site, particularly for screen reader users. We want to make finding your dream job as easy as possible, so if you require additional support please contact HR Direct on 1800 989 696. ### Advertising End Date 03/11/2026 ## At a glance - Posted by the employer: Oct 27, 2026 - First seen by OpenNash: Nov 1, 2026 - Last checked: Nov 1, 2026 - Listed for: 5 days - Location: Sydney CBD Area +1 more - Employment type: Full-time[Apply on Commonwealth Bank’s careers site →](https://cba.wd3.myworkdayjobs.com/CommBank_Careers/job/Sydney-CBD-Area/Data-Scientist---Credit-Risk-Models_REQ265707-1) ## Hiring at Commonwealth Bank - Open jobs: 191 - New in the last 7 days: 96 - Tracked since: Jul 16, 2026 [All Commonwealth Bank jobs](https://jobs.opennash.com/companies/commonwealth-bank/) · [Weekly hiring report](/reports/hiring/) ## More jobs at Commonwealth Bank ### [Senior Data Scientist - Stress Testing Models](https://jobs.opennash.com/companies/commonwealth-bank/jobs/ccb3adb24153bfd63d9b/) Sydney CBD Area +1 more ### [Chapter Lead](https://jobs.opennash.com/companies/commonwealth-bank/jobs/98beffd51f38b50ba1b6/) Sydney CBD Area +1 more ### [Expression of Interest - Software Engineering, AI Venturing Pod](https://jobs.opennash.com/companies/commonwealth-bank/jobs/c45c04548bc0e5b63cdc/) Sydney CBD Area +1 more ### [Principal Product Design- Talent Community](https://jobs.opennash.com/companies/commonwealth-bank/jobs/355f5bb1c1522232882d/) Sydney CBD Area +1 more ### [Senior Systems Engineer (Mainframe Storage)](https://jobs.opennash.com/companies/commonwealth-bank/jobs/3660dcf812c3f1a47bb8/) Sydney CBD Area +1 more ## Similar jobs at other companies ### [Senior Data Scientist, Credit Risk](https://jobs.opennash.com/companies/national-bank-of-canada/jobs/d31d02942b2808db3396/) National Bank of Canada ### [AVP, Credit Risk Data Scientist, Credit Risk Modelling](https://jobs.opennash.com/companies/oversea-chinese-banking/jobs/f0a64974969594956470/) Oversea-Chinese Banking · OCBC Singapore ### [BIU:Data Scientist-Model Risk Mgmt and Financial Modelling](https://jobs.opennash.com/companies/axis-bank/jobs/8a2963bbaa10299b58ae/) Axis Bank · Mumbai ### [Sr Data Scientist, BNPL Credit Risk Oversight](https://jobs.opennash.com/companies/paypal/jobs/754d4ac6b9ad87f7e7aa/) PayPal ### [Senior Data Steward, Credit Risk](https://jobs.opennash.com/companies/national-bank-of-canada/jobs/20a8219fe5778e419cb2/) National Bank of Canada OpenNash lists jobs from employers’ own careers sites and does not handle applications. Dates come from the employer where stated; “first seen” and “last checked” are our own observations. [ OpenNash ](https://opennash.com/) AI-native services firm that builds custom software and 24/7 AI agents. OpenNash Jobs is an OpenNash Applied AI project. [Book time with OpenNash](https://calendly.com/opennash/new-meeting?hide_gdpr_banner=1) Jobs - [Search jobs](https://jobs.opennash.com/search/) - [Companies](https://jobs.opennash.com/explore/) - [Hiring report](https://jobs.opennash.com/reports/hiring/) - [AI assistants](https://jobs.opennash.com/connect/) - [How it works](https://jobs.opennash.com/methodology/) OpenNash - [opennash.com](https://opennash.com/) - [Services](https://opennash.com/ai-agent-consulting/) - [OpenNash CX](https://opennash.com/cx/) - [AI Tools](https://opennash.com/ai-tools/) - [Blog](https://opennash.com/blog/) - [About](https://opennash.com/about/) Contact - [hello@opennash.com](mailto:hello@opennash.com) - [LinkedIn](https://www.linkedin.com/company/opennash) - [Support](https://jobs.opennash.com/support/) - [Privacy](https://jobs.opennash.com/privacy/) - [Terms](https://jobs.opennash.com/terms/) © 2026 OpenNash, Inc. Company names and public job postings belong to their respective owners. Employers control source availability and application decisions.