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Work Experience

GMAT/GRE/SAT/ACT Tutor

Wyzant

June 2020 - Present

Independent Contractor at Wyzant.com, where I'm a highly regarded online tutor of Math (algebra to calculus), the Math section of the SAT, the Math and Science sections of the ACT, the Quantitative section of the GRE, and the Quantitative Reasoning and Data Insights sections of the GMAT, and a variety of software topics. Average rating 4.85 out of 5, noted for technical and communication skills. Educates high school, college, and graduate students, plus working professionals from around the world.

Business Intelligence Analyst

Threshold Enterprises

2018 - 2019

* Create data driving tools and database reports for the Business Intelligence Team. * Support the Sales, Finance, Purchasing and Sales Analytics teams in reporting, data mining, and on-going maintenance of information accuracy and integrity. * Provide tools for management and the above teams, and assist as backup for both the Business Intelligence manager, VP of Sales and other staff as needed. Specific Job Duties: * Repaired broken reports in SQL Server Reporting Studio. Responsible for organization and tracking of monthly reports, including accuracy and information integrity. * Updating and maintaining all sales-related reporting. * Worked closely with the team in data mining, running of ad-hoc reports and assisted in use/interpretation of data. * Provided support reporting tools and assisted with the coordination of cross-departmental requests. Microsoft Excel, Microsoft SQL Server and +1 skill

Senior Support Engineer

StreetLight Data

2016 - 2017

* Supported their traffic analytics product, which is accessed through a web application. * Picked up GIS (Geographical Information Systems) and PostGIS (PostgreSQL with GIS). * Handled numerous app questions through email and phone, often provided training. * QA’ed product, documented many support procedures, suggested usability enhancements.

Python & Java

Independent Study

2015 - 2019

Computer science: one full year of classes (with Java). * Object oriented methods: interfaces, generics, & collections. * Data structures: arrays, linked lists, trees, maps, hashing, maps, searching & sorting. * Networking, threading, file IO, JDBC & Eclipse. 2 quarters of Python classes: * Functional programming and OOP. * Sequence types. * Iterators, list comprehensions, generators, and generator expressions. * Networking, databases, threading, regular expressions, web programming. * pyCharm and pyDev. Coding samples available on GitHub (https://github.com/David-J-Lambert) * A Python database client for querying Oracle, SQL Server, MySQL, PostgreSQL, and more. * A Python/Beautiful Soup web scraper. * A Python/eBay API sample program. * A Microsoft Outlook VBA Contact Group management program. Programming experience with Korn Shell, VBA, T-SQL and PL/SQL.

Independent Consultant

Self Employed

2013 - 2016

* Recovered data from dying hard drives using sophisticated Linux tools, working across NTFS, FAT32, HFS+, EXT3/4, and exFAT file systems. * Solved performance, (wireless) networking, and application an OS issues. * Migrated customers from Windows 8 and 10, transferred data from obsolete applications, trained even the most anxious and inexperienced users.

Education

UC Berkeley

Ph.D., Physics

1985 - 1995

* Created, researched, and defended original dissertation topic in experimental particle physics. * Updated and customized experiment’s physics simulation. Tuned it to fit experimental data. * Took ownership of experiment’s track identification. Calibrated equipment, processed and analyzed identification data, created model of accuracy of our track identification process. * Designed and developed two neural networks, wrote or assembled necessary software. * Processed large amounts of data for dissertation and our experiment. * Wrote and tested huge amount of Fortran code to analyze data for dissertation. * Learned and applied knowledge of Bottom Quark physics, neural networks, and statistics. * Worked extensively with Monte Carlo simulations, numeric and function optimization. * Dissertation: "Study of Bottom Quark Production in Electron-Positron Annihilation at 29 GeV with the Aid of Neural Networks."