Gil co-founded Optimax Systems Corporation in 1993, where he served as CTO and Chairman. Optimax products used genetic algorithms and constraint computation technology to perform detailed production schedule optimization, providing significant value to its customers. Optimax was acquired by i2 Technologies in 1997, where Gil served first as acting CTO and later as Director of Advanced Technologies. He has published extensively on the theory of genetic algorithms and their application to scheduling. He is active in professional circles, having served on the organizing and program committees of many conferences on genetic algorithms and as President of the International Society of Genetic Algorithms. For five years prior to the founding of Optimax, he was employed by BBN as a computer scientist in the Intelligent Systems Group, where his research concentrated in the areas of machine learning, genetic algorithms, and machine vision. While at BBN, Gil developed a genetic-algorithm-based procedure to perform schedule optimization, for which he received a patent. From 1985 to 1988, he consulted as a scientific programmer to Warner-Lambert/Parke-Davis. In 1984 he co-founded and served as President of Ann Arbor Softworks, a firm which developed commercial software products for the newly introduced Apple Macintosh. Gil received his B.A. with Distinction in 1986 from the University of Michigan, where he also earned his M.S. in Computer Science in 1987.

Jeff was most recently a Fellow at i2 Technologies, the highest technical position within the company. At i2, Jeff was lead architect for production scheduling products, and did extensive research into new optimization techniques for production scheduling. Prior to i2, Jeff co-founded Optimax Systems Corporation. From 1989 to 1993, Jeff worked at BBN Laboratories, where he performed research in genetic algorithms and scheduling, machine vision, simulation, natural language, machine learning, cognitive science, and expert systems. In the summer of 1989, Jeff worked at the CalTech Jet Propulsion Laboratory for the Voyager Neptune flyby. From 1987 to 1989, Jeff worked at the MIT Artificial Intelligence Laboratory, where he did research in programming languages, distributed systems, natural language, and knowledge representation. In 1986, Jeff worked at Charles Stark Draper labs on heuristic learning techniques. Jeff has publications in the areas of natural languages, machine learning, genetic algorithms, expert systems, and programming languages. He received a BS in Computer Science from the Massachusetts Institute of Technology in 1989.