By Hasan Legal Desk · May 15, 2026
Our client holds a Ph.D. in Mechanical Engineering from the University of Oklahoma and brings over seven years of research experience in hydrogen systems, sustainable energy, and machine learning-driven process optimization — with 544 citations and an h-index of 7. He currently works as a Site Engineer at a U.S.-based biorefinery applying his research directly to industrial operations.
Some cases come full circle in a satisfying way. This one did — EB-2 NIW I-140 approved, adjustment of status granted, green card in hand. Here is how it happened.
The Client
Our client is a mechanical engineer with a research background in hydrogen systems, sustainable energy, and machine learning-driven process optimization. He holds a B.S. in Chemical Engineering from a university in Bangladesh, an M.S. in Engineering Science with a chemical engineering emphasis from a U.S. university, a Graduate Certificate in Data Science and Analytics, and a Ph.D. in Mechanical Engineering from a major U.S. research university, conferred in late 2024.
He currently works as a Site Engineer at a U.S.-based biorefinery, where his research on hydrogen process optimization, fugitive emissions control, and data-driven energy modeling is applied directly to industrial operations.
Why EB-2 NIW
The EB-2 NIW — National Interest Waiver — allows foreign nationals with an advanced degree or exceptional ability to petition for permanent residence without an employer-sponsored labor certification, provided their work is in the substantial national interest of the United States.
Our client's case fit the NIW framework well. His research addresses two of the most pressing challenges in U.S. energy policy: the transition to hydrogen-based energy systems and the reduction of fugitive emissions from energy infrastructure. This is not abstract academic work — he is applying it daily at an operating biorefinery, optimizing hydrogen reformer performance, managing hydrogen purity and pressure systems, and building machine learning models to quantify emissions from refinery stacks.
His publication record supported the case. Over seven years of research, more than 544 citations, an h-index of 7, with work published in journals including Expert Systems with Applications, International Journal of Energy Research, Sustainability, Polymer Testing, ASME Open Journal of Engineering, and Frontiers in Energy Research. That kind of citation footprint tells you the field has noticed the work.
What This Case Illustrates
The NIW is often misunderstood as requiring fame or notoriety. It does not. It requires demonstrating that the work has substantial merit and national importance, that the person is well-positioned to advance that work, and that waiving the labor certification requirement is on balance beneficial to the United States.
For engineers working in energy — hydrogen, renewables, emissions reduction, grid resilience — the national importance prong is not difficult to establish. The harder work is documenting that the specific individual, with their specific skills and track record, is genuinely advancing that field and will continue to do so. Our client's citation record, published research, and active role at an operating energy facility built that case convincingly.
A doctoral degree helps. A strong publication record helps more. Active industry application of that research is what brings it together.
Hasan Legal PC handles employment-based immigration including EB-1A, EB-2 NIW, and O-1 petitions. If you are a researcher or engineer working in a field of national importance, we are happy to evaluate your case.