Mark Lacroix is a System Engineer at Dynamic System Solutions, LLC. He possess expertise in software development, web development, databases. Colleagues describe him as "I hired Mark as a senior data/ML engineer at Imprivata. Within three months I submitted a promotion for him. Mark is highly intelligent, personable, and diligent. He has very fine architectural judgment, a quality I have found to be surprisingly rare among software, data, and ML engineers. Mark demonstrates initiative informed by that judgment. He regularly surfaces hidden pain points and designs and builds solutions for them before I'm even aware the pain point exists. One recent example is a code generator that eliminated what had been a great deal of tedious manual glue-code work. Mark came to Imprivata with an undergraduate mathematics credential but limited exposure to data science. He has already absorbed a surprising amount of data-science arcana: cross validation, hyperparameter search, and deep-learning model training, for example. And he has already demonstrated real mathematical insight about the challenges of scaling these sorts of calculations to many millions of events of daily production throughput--especially about how to address these challenges on AWS. I expect to see Mark's career progress rapidly in big-data/ML engineering. I hope I'll have a chance to work with him again. It's always a pleasure. Please contact me through LinkedIn if you'd like to hear more."