Karen obtained her Master’s degree, Cum Laude, in Business Mathematics and Informatics from North-West University in 2004. As part of her Master's degree she was responsible for the development of a Basel II compliant Loss Given Default model for Nedbank.Her previous work experience includes an analytical role within the Analytics division of TransUnion, an international credit bureau operating in South Africa. Thereafter, she moved to the credit division of Real People where she assisted in establishing this division within the Real People Group. Her next role was as a founding member and General manager of the analytics division of XDS, another major credit bureau. She re-joined Real People in 2012 to head up the Group Analytics division. Here she served on numerous committees of strategic importance. These included the group extended executive committee, group credit approvals forum, analytics executive committee, the innovation forum and various divisional company management boards.An opportunity to move to Cape Town saw her taking up the role of Divisional Manager in the Risk and Analytics team at Truworths where she was responsible for the development of predictive models for decision areas across the full credit life cycle. She supported both Truworths and Office (UK) with analytical projects and was the main driver behind the company's migration of their analytical data assets and models to the SAS Viya platform. Currently, she is looking after the Decision Science area at BluNOVA - a subsidiary of the Blue Label group.She is particularly skilled in using statistical tools, predominantly SAS, to develop and maintain descriptive and predictive models that can assist the business in making informed decisions. She has a strong data background – having worked extensively on bureau and consumer data throughout her career.The consultative nature of her work has provided her with extensive exposure in major industries including credit bureaux, personal finance, telecommunications, debt collection and retail.
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Head Of Data ScienceBlunova Jul 2023 - PresentCape Town, Western Cape, South Africa -
Divisional Manager: Risk & AnalyticsTruworths Mar 2022 - May 2023Cape Town, Western Cape, South AfricaDevelopment of predictive models for decision areas across the full credit lifecycle from acquiring new customers to eventually collecting on the bad debt for customers who default on their credit obligations with the business. These models aim to predict the probability of fraud, default, conversion, etc.Responsible for the final sign-off of statistical models developed internally or through external consultants. Responsible for the continuous enhancement of the predictive modelling methodologies applied in the department. Supporting both Truworths and Office (UK) with analytical projects.Evaluation and incorporation of new data sources for use in the department to improve the completeness of certain data elements or for the use in predictive models or analyses.Development of new features, based off internal and credit bureau data for use in models, analyses and reports. Regular engagement with other departments such as IT is required to manage the implementation of ETL processes for new data, implementation of new features, management of scheduled processes, and implementation of predictive models.Managing the relationship with SAS and the third-party administrators of the SAS environment. Project manager for the SAS Viya migration – including interacting with IT on the procurement of hardware, environment configuration, security, migration of existing projects. Responsible for coordinating the upskilling of staff for the new SAS Viya environment.Managing the production SAS environment – review new scripts before scheduling to ensure optimal processing i.t.o. resources consumed, run times etc; scheduling scripts, monitoring job execution. Managing all employee related surveys. This includes reviewing the survey questions and structure, setting up the surveys in SurveyMonkey, setting up dashboards in SurveyMonkey, analysing and providing feedback on the results.Mentoring and training staff on the application of analytical methodologies and SAS. -
Senior Manager: Risk And AnalyticsTruworths Mar 2019 - Mar 2022Cape Town Area, South Africa -
Manager: Risk And AnalyticsTruworths Feb 2016 - Feb 2019Cape Town, Western Cape, South Africa -
Senior Risk AnalystTruworths Feb 2015 - Jan 2016Cape Town, Western Cape, South Africa -
External ExaminerNorth-West University / Noordwes-Universiteit Feb 2017 - Jun 2017Cape Town, Western Cape, South AfricaAppointed as external examiner for the subject “Retail credit risk”, a postgraduate course focussing on credit scoring.Required to review and approve proposed draft examination papers. Responsible for ensuring that internal marking was consistent, through the in-depth reviewing of a random selection of papers. -
External ExaminerNorth-West University / Noordwes-Universiteit Feb 2015 - Jun 2015Cape Town, Western Cape, South AfricaAppointed as external examiner for the subject “Retail credit risk”, a postgraduate course focussing on credit scoring.Required to review and approve proposed draft examination papers. Responsible for ensuring that internal marking was consistent, through the in-depth reviewing of a random selection of papers. -
Joint Head: Group AnalyticsReal People Apr 2012 - Dec 2014Johannesburg Area, South AfricaResponsible for all major analytical and modelling functions in the group. Models developed include bespoke bureau, demographic and behavioural scorecards aimed at predicting payment behaviour, collections and various other factors. Driving the thought leadership with regards to statistical methodologies used to ensure best in class approach is followed.Manage relationships with credit bureaux, data providers and consulting firms – including negotiation of contracts and fees.Responsible for institutionalising analytical and statistical techniques within the various divisions (including Responsible Finance – South Africa and Kenya, Rehabilitative Finance, Real People Cellular, Aspire Group, Portfolio Recovery Solutions, Debt Management Consultants).Provide strategic insights and analyses in support of various strategic opportunities and decisions to group and divisional executives.The day-to-day management, training and mentoring of analytical staff.I was a member of the following committees:• Group executive committee (Extended)• Analytics executive committee• Group credit approvals forum• Home finance credit committee• Divisional company management boards• Innovation forum. -
External ExaminerNorth-West University / Noordwes-Universiteit Feb 2013 - Jun 2013Cape Town, Western Cape, South AfricaAppointed as external examiner for the subject “Retail credit risk”, a postgraduate course focussing on credit scoring.Required to review and approve proposed draft examination papers. Responsible for ensuring that internal marking was consistent, through the in-depth reviewing of a random selection of papers. -
General Manager: AnalyticsXpert Decision System Mar 2009 - Feb 2012City Of Johannesburg, Gauteng, South AfricaA key milestone was the establishment of an Analytics division for this credit bureau. This division was responsible for the development of a set of bureau specific characteristics, or features, and the development of a suite of generic models and scorecards aimed at predicting consumers’ income and propensity to pay. Generic collection models were also developed. All of these models enabled the bureau to effectively compete with the existing credit bureaux operating in the market. The development of client specific models and analyses were further requirements. These models spanned the entire credit lifecycle from account origination and management to collection prioritisation. Response modelling and segmentation were further areas of responsibility.Played an active role in the development of marketing material for the products and services offered by the department as well as the provision of support to the sales team to enable them to successfully sell these products in the market. Key responsibilities included the development, monitoring and management of all analytical solutions and models across all areas that XDS serve in the credit services industry. The day-to-day training of analytical staff and the management of the Analytics department also formed part of my duties. The position required regular engagement with clients – from the drafting of proposals through to the presentation of findings and results to both managerial and technical staff.I furthermore served on the company’s Executive Committee. -
External ExaminerNorth-West University / Noordwes-Universiteit Feb 2011 - Jun 2011Cape Town, Western Cape, South AfricaAppointed as external examiner for the subject “Retail credit risk”, a postgraduate course focussing on credit scoring.Required to review and approve proposed draft examination papers. Responsible for ensuring that internal marking was consistent, through the in-depth reviewing of a random selection of papers. -
Risk ManagerReal People Sep 2006 - Feb 2009East London, Eastern Cape, South AfricaKey responsibilities included the development of customised analytical solutions for the company’s personal finance, cellular and educational finance divisions. This entailed the development, monitoring and management of various risk, response and affordability models using demographic, behavioural and bureau data. These models spanned the entire credit lifecycle from account origination and management to collection prioritisation.A major milestone was achieved by making the company bureau independent through the creation and housing of an internal set of bureau characteristics and customised models.The position furthermore required the development of a pricing model for all major credit divisions. -
Scorecard Developer / AnalystTransunion Jan 2005 - Sep 2006Pretoria, Gauteng, South AfricaResponsible for the development and monitoring of customised and generic scorecards, joint odds matrices and affordability models across a multitude of industries using Base SAS. Furthermore responsible for the delivery of various statistical analyses and reporting through the use of Base SAS.Apart from my involvement in the consumer market, I was also involved in maintaining scorecards pertaining to the commercial market. -
Graduate TraineeNedbank Jul 2004 - Dec 2004City Of Johannesburg, Gauteng, South AfricaResponsible for the development of a Basel II compliant Loss Given Default model as part of the industry related project required to obtain my M.Sc. Business Mathematics & Informatics Degree. -
Assistant For The Subject StatisticsNorth-West University / Noordwes-Universiteit Feb 2004 - Nov 2004Potchefstroom, North-West, South AfricaResponsible for the grading of papers. -
Assistant For The Subject MathematicsNorth-West University / Noordwes-Universiteit Feb 2003 - Nov 2003Potchefstroom, North-West, South AfricaResponsible for the grading of papers.
Karen Maritz Education Details
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M.Sc Business Mathematics And Informatics (Cum Laude) -
Mathematics; Statistics; Economics; Informatics
Frequently Asked Questions about Karen Maritz
What company does Karen Maritz work for?
Karen Maritz works for Blunova
What is Karen Maritz's role at the current company?
Karen Maritz's current role is Head of Data Science at BluNova.
What schools did Karen Maritz attend?
Karen Maritz attended North-West University/noordwes-Universiteit, North-West University / Noordwes-Universiteit.
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Karen Maritz
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