Harbans Heer
Verified Expert in Engineering
Data Developer
London, United Kingdom
Toptal member since June 24, 2020
Harbans is a resourceful data analyst and programmer with 15+ years of experience. One of her focus areas has been building and optimizing data warehouses and risk management systems for major investment banks. Her expertise includes MS SQL Server, SSIS, SSRS, SSAS, Visual Basic, Visual C++, and Power BI. Harbans works well under pressure and builds collaborative relationships with both business and technology clients.
Portfolio
Experience
- SSRS Reports - 20 years
- T-SQL (Transact-SQL) - 20 years
- SQL Server Integration Services (SSIS) - 15 years
- ETL - 15 years
- Data Warehousing - 10 years
- SQL Server Analysis Services (SSAS) - 8 years
- Data Warehouse Design - 6 years
- Microsoft Power BI - 6 years
Availability
Preferred Environment
Microsoft Power BI, Jira, SSAS, SQL Server Reporting Services (SSRS), SQL Server Integration Services (SSIS), Microsoft SQL Server
The most amazing...
...thing I did was migrate an AML system that was using UAT and production servers to an SQL 2014 DWH comprising over two billion rows and 5TB of incoming feed.
Work Experience
Senior BI Developer
Lloyds Banking Group (Consultant)
- Developed, tuned, and optimized complex stored procedures, functions, triggers, constraints, and indexes using T-SQL, SQL Query Analyzer, execution plans, SQL Profiler, and parallelism and partitioning techniques.
- Developed SSIS packages, SSRS reports, and SSAS cubes for data warehouse (DWH), SUMMIT, and AML feeds, using Teradata, Oracle, and SQL 2008 and 2014 with Jira to monitor, track, and prioritize work items for clearer visibility.
- Produced cube analyses and management information (MI) reporting using Power BI, Tableau, and Excel.
- Developed client reports from databases and cubes using SQL and MDX queries.
- Monitored and supported daily batch runs, ensuring deliverables were available within required service level agreements.
IT Application Support Analyst
Wyevale Garden Center (Consultant)
- Delivered tangible results against a background of rapid business change.
- Identified, investigated, and resolved functionality and data integrity issues in existing applications.
- Used the organization's help desk system to manage issues and update the support knowledge base.
Senior BI Developer
OpenLink Financial (Consultant)
- Supported a business intelligence platform designed to serve the advanced risk management reporting needs of companies that trade commodities and capital markets.
- Created, tuned, and optimized complex stored procedures, functions, triggers, constraints, and indexes to handle exchange derivatives, using T-SQL, Query Analyzer, execution plans, and SQL Profiler.
- Developed, optimized, and supported the EMIR Cube, which helped firms across all sectors meet European market infrastructure regulation requirements.
- Built and optimized SSIS packages and SSRS reports to meet EMIR reporting requirements for derivative contracts and implementation of risk management standards. This established common rules for central counterparties and trade repositories.
- Installed and supported EMIR Cube components and resolved issues at national and international client sites.
Senior SQL Developer
Barclays Investment Bank (Consultant)
- Developed, optimized, and supported SQL Server databases in the credit risk engine space for credit, market, and counterparty risk trading teams. The work focused mainly around the firm's strategic credit risk system for derivative trades.
- Created SQL stored procedures and SSIS packages for Basel 3 rules and downstream reporting systems and dashboards.
- Maintained and supported QlikView 10 dashboards across the department.
- Developed, tuned, and optimized complex stored procedures, functions, triggers, constraints, and indexes using T-SQL, Query Analyzer, execution plans, and SQL Profiler.
Applications Development and Support
Lloyds Banking Group
- Developed and supported a P&L and risk system within finance IT. The system accepted feeds from several upstream systems, processed the records by means of an overnight batch, and fed data and reports to downstream systems.
- Built and supported a product and market DWH serving the middle/back office in the form of MI systems, financial reporting and accounting for treasury operations, finance workflows, SUMMIT, Flexi, and Atlas (a settlement system for FX and MM deals).
- Developed a system using SQL Server 2000, Visual C++ 6.0, VB6, SQL Server 2005/8, C# .NET, VB, and MVC 2.0.
- Monitored WebSphere to ensure file and message delivery using Connect:Direct.
- Provided overnight support to batch runs for the P&L and risk system and the products and markets DWH.
Experience
Optimization of a Data Warehouse
Migration of a Legacy Application
My role included:
• Investigating and documenting client requirements by means of functional and technical specifications.
• Object-oriented analysis and design (taking measures to record and resolve technical issues).
• Coding, testing, and implementing application code using VB and MS Access.
• Producing and maintaining documentation for all phases of the project.
• Providing post-implementation support to the client.
Migration of an AML Application to SQL 2008
Created an ASP.NET MVC Application to Monitor an Overnight Batch
Education
Bachelor of Science Degree (Hons) in Applied Sciences (Computing)
Wolverhampton University - Wolverhampton, England
Certifications
Python for Data Visualization
Advanced SQL for Query Tuning and Performance Optimization
Power BI Data Modeling with DAX
Learning Microsoft Power BI Desktop
Hadoop Foundations – Level 1
IBM
Big Data Foundations – Level 2
IBM
Big Data Foundations – Level 1
IBM
ITIL Foundation
Parity
Skills
Tools
Jira, Microsoft Access, Microsoft Power BI, Tableau, Microsoft Visual C++, SSAS, Visual SourceSafe, Visual Studio, FogBugz, Autosys, IBM Rational ClearCase
Languages
T-SQL (Transact-SQL), SQL, Visual Basic 6 (VB6), Python, VB.NET, Assembler, C#.NET, Delphi, HTML, VBScript, MDX, C#, Visual Basic
Paradigms
ETL, Agile, Business Intelligence (BI), MVC Design
Storage
SQL Server Integration Services (SSIS), Microsoft SQL Server, SQL Server Reporting Services (SSRS), Databases, SQL Server Analysis Services (SSAS), Database Performance, Database Administration (DBA), Oracle 10g, SQL Server 2005
Frameworks
ASP.NET MVC, Classic ASP, .NET, Tivoli Framework (ITM5)
Platforms
SharePoint, Oracle, QlikView
Other
SSRS Reports, Data Warehousing, Data Warehouse Design, Database Optimization, Query Optimization, Data Warehouse Testing
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