Ivan Tsang Email & Phone Number

New York, Ny, Us

New York, Ny, Us

Building financial applications that leverage blockchain technology.

New York, New York, Us

• Created a web application with React and Redux to audit and share filter on configurable data domains like accounts across the firm for reporting purposes.• Designed and implemented a RESTful Web Service using Dropwizard framework (Jetty, Jersey and Jackson) to allow business users to create, save and apply their adjustments to complete their daily workflow.• Built java logic for a Dropwizard application called Time Machine that can re-launch older business applications to reproduce historical reports for external or internal review. Created mechanisms to transfer data and deployment jars from ATMOS storage to HDFS and Linux filesystems and redeploy the application as it was when the reports were first created.

New York, New York, Us

• Translated existing SEC 15c3-3 Lockup allocation process to use firm’s strategic framework which required porting the logic to use Apache Spark.• Refactored and enhance existing month-end balance sheet logic for readability and increased granularity in reporting to facilitate a new daily workflow for Brazil GAAP. • Created new business workflows and reports within our existing main Balance Sheet java application so we are compliant with the Mexican Financial regulations which would allow GS to obtain a Broker Dealer license to start trading within the Mexico markets. Participated in firm-wide system integration test. Coordinated user acceptance tests for our business users. • Acclimated new hires to our team by mentoring, leading training classes on in-house technologies and presenting an overview of our main Balance Sheet Workstation java application.• Responded to users’ production inquiries and resolved time-sensitive production issues like SLA breach, performance degradations, data issues, application errors and system issues which would require debugging java exceptions, analyzing logs, identifying process/hardware failures and updating problematic database records.• Utilized in-house Java Object Relational Mapping framework (Mithra) which features bi-temporal chaining, code generation, junit integration and object oriented query language to support historical reproducibility for up to 7 years on regulatory reports requested by business users and internal/external audit requests.

- Provide technical support for staff.- Troubleshoot given assignment and research solutions if needed.- Properly maintain and update computer hardware, software and peripherals.- Present and inform users of my solution.

Cambridge, Ma, Us

Summer InternUpdate and fix existing applications using PRPC (PegaRULES Process Commander) tool set.

- Prepared after school activities and oversaw the safety of the children, usually in groups of 15. - Followed school plan and children safety rules.- Reported to teachers if serious issues occur.