# Da Weng

> Staff Software Engineer at LinkedIn

Location: Castro Valley, California, United States
Profile: https://flows.cv/daweng

- Over 10 years’ experience in software development & architecture, cloud and client/server enterprise applications, object-oriented analysis and design, requirements analysis and modeling.
- Good experience in developing applications using Java, .Net, PostgreSQL and SQL Servers.
- Good experience in designing and implementing RESTful services.
- Good at design and build high performance, large data progressing application.
- Experience in architecting, design, development and deployment of high-performance, scalable, distributed n-tier applications.
- Experience in user interaction, requirement gathering, use cases, functional requirements.
- Good experience in continuous integration and continuous delivery practice.
- Familiar with the full software life cycle including business requirement, architecting and tech design, test cases preparation, implementation, deployment and delivery products to customers.


Specialties: Java, Spring Framework, Hibernate, Apache Ignite, Apache Olingo, Postgresql, Docker and Docker Swarm, Python, Linux Shell Scripting, Jenkins, C#, Design Pattern, ASP.NET, WCF, SQL Server, Javascript, XML, XSLT

* Microsoft Certified Applications Developer (MCAD)
* Microsoft Certified Database Administrator (MCDBA)
* Microsoft Certified Professional (MCP)

## Work Experience
### Staff Software Engineer @ LinkedIn
Jan 2024 – Present | California, United States

### Senior Software Engineer @ LinkedIn
Jan 2019 – Present | United States

### Staff Software Engineer - Senior Staff Software Engineer @ SS&C Advent
Jan 2015 – Jan 2019 | San Francisco Bay Area
Working on Advent Genesis cloud solution, designed and implemented various features for multiple services using Java, Apache Ignite, PostgreSQL and multiple open source projects
- Advent Genesis cloud solution design and features implementation using Java, SpringFramework, Gridgain and Postgresql.
- Implemented core components and libraries including odata querying, in-memory hierarchical data querying. The query service allows UI team to customize the user views without backend code change, boosted the team’s productivities.
- Design, implement and maintain PostgreSQL databases; setup Postgres Point in Time recovery; setup the system high availability and disaster recovery. 
- Automated continues integration and delivery processed using Python, Docker, Shell Scripting, git, Jenkins and artifactory.
- Features and system design, led other developers to complete features within sprint cycle.
- Integrated with Amazon AWS and S3 with customized encryption to meet financial industry requirement.

### Senior Software Engineer @ SS&C Advent
Jan 2011 – Jan 2015 | San Francisco Bay Area
Worked on Advent Moxy application. Moxy is an industry leading trade order and portfolios management solution developed by C#, C++ and SQL Server. 
- Implemented features on Trade Order Management enterprise solution using C# and C++, including 3rd integration, real time pricing and trade order processing; 
- Created Windows Service listening the message and processing orders with DTCC Trade Matching Platform with high performance.
- Worked on Sql Server database schema design, stored procedures implementation and Sql performance tuning. 
- Automated the application integration testing.

### Team and Tech Lead (promoted from senior software developer) @ Esurance
Jan 2006 – Jan 2011
Worked on insurance policy accounting system and management system using Microsoft .Net technology. My primary role is to analysis business requirement, design and implement the projects, led the team to meet project milestones and also ensure the project in good quality.

- Designed and wrote tech design documents for various projects for Esurance accounting and management system.
- Visualized the Esurance xml-based workflow, saved good amount time of the teams developing time and reduced the chance of misconfiguration.
- Implemented projects based on the tech design documents, deliver projects on schedule.
- Implement functionality by integrate with 3rd party system such as paymentech and paypal.
- Prepared test cases and performed unit testing to insure project quality. 
- Implemented the middle tier assemblies using C#, XML, XSL, COM+, ADO.Net, ASP.Net and Microsoft Enterprise Libraries.
- Implemented Windows Services running in multi-thread mode using C#, Web Service, MSMQ and Microsoft Enterprise Libraries.
- Implemented Windows application for visualizing and validating system workflow diagrams using C#. 
- Hands on Sql Server database schema design, stored procedures implementation and Sql performance tuning.

### Software Developer @ Loansoft GHR Systems
Jan 2005 – Jan 2006
Developed and implemented online and desktop mortgage softwares - Loan Origination Studion for loan officers and mortgage brokers. The customers include Chase Bank, ING Mortgage and Sun Trust Bank, etc.

* Development of online and desktop mortgage system with C#, ASP.Net, DHTML, XML, XSLT, Web Services and ADO.Net. 
* Analyzed and refactored the existing system and developed the customer loan system using ASP.Net, DHTML, XML, XSLT.
* Implemented user account management with data synchronization between online and desktop applications.
* Integrated 3rd party APIs (decision engine) and web services into desktop and online software.
* Used .NET Web forms and ADO.NET extensively.
* Created and customized User Controls for web applications.
* Involved in designing and implementing the Middle Tier Assemblies using C#.
* Involved in creating Stored Procedures.
* Involved in creating Data scripts.
* Performance Tuning of Stored Procedures.
* Hands on stored procedures creation, maintenance and performance tuning. 
* Prepared unit test cases and performed unit testing to insure project quality.


## Education
### Master in Computer Science
University of Bridgeport

### Bachelor in Mathematics and Its Applied Software
Beijing University of Technology


## Contact & Social
- LinkedIn: https://linkedin.com/in/wengda

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Source: https://flows.cv/daweng
JSON Resume: https://flows.cv/daweng/resume.json
Last updated: 2026-04-12