Thomas Lewiner

computational geometry  ·  topology  ·  applied AI

Thomas
Lewiner.

Two doctorates, Professor, fifteen years a researcher in mathematics, now leading data & bioinformatics in industry — and, on rainy afternoons, a few small apps made with my kids.

background

I'm a double-PhD executive with about twenty years split between advanced R&D and getting work into the world. I currently lead AI and bioinformatics for next-generation vaccine design at Ceva Santé Animale.

Before that I helped scale BCG Gamma (now BCG X) from its earliest days, and for fifteen years I was a researcher and professor of mathematics at PUC-Rio, working across computational geometry and topology, discrete Morse theory, geometry processing, reservoir modeling and computational fluid dynamics. I was elected an affiliated member of the Brazilian Academy of Sciences.

80+
publications
3000+
citations
28+
h-index
20+
grad students supervised
vector dynamics
selected publications

Fifteen years of academic research.  Google Scholar Profile ↗

topology
projects

Some Accessible Projects

the ·sophe apps

A little suite of apps about time & measure, made with my kids. They started as homework helpers and kept growing. Each ships on macOS, iOS and watchOS.

χρόνος · the time

Chronosophe

with M. G.

A clock that seeks out the prettiest minute nearby — 12:34, 4:04, 11:11 — and paints it the colour of the pattern it found.

καιρός · the moment

Kairosophe

with Ms. M.

A gentle calendar of reasons to celebrate — your own dates first, then the patterns, holidays and moons around them.

ταχύς · swift

Tachysophe

with M. D.

Open the book, tap, and read aloud — a stopwatch that paces the page and follows a child's reading speed.

σύν · together in time

Synchrosophe

with Ms. R.

Takes everyone's day — when they wake, sleep, nap and grow hungry — and finds the meal times that bring the most of the family to one table.

old code
  • Marching Cubes 33 (2003) — Reference C++ library ensuring exact topological consistency for isosurfaces without cracked geometry structures. [source.zip ↗ · paper ↗]
  • Topological Mesh Operators (2010) — Discrete assembly of combinatorial operators for mutating triangulated 2-manifold structures. [source.zip ↗ · paper ↗]
  • Pointerless Octree Duals (2010) — Memory-efficient algorithm optimizing rapid generation bounds on deep dynamic trees. [source.zip ↗ · paper ↗]
  • Arc-Length Based Curvature Estimation (2006) — Demonstration program (Windows) for the paper, with examples. [demo.zip ↗ · paper ↗]
tutorials
computer graphics and physics
cv

The longer version of where I've been.  LinkedIn Profile ↗

experience

Industry

Group Chief Data & Bioinformatics Officer

Ceva Santé Animale

Pivoted the group's AI strategy toward TechBio. Leading AI & bioinformatics for next-gen vaccine design, bridging deep-learning research and experimental immunology, and developing real-world evidence with customers worldwide.

2019 — now

Lead Data Scientist

Boston Consulting Group · BCG Gamma

Contributed to the launch and scaling of BCG Gamma (now BCG X). Led AI projects with material ROI: $40M+ in logistics savings, doubled production at a European refinery, +15% margins for a global retailer.

2016 — 2019

Academia

Associate Professor & Researcher

PUC-Rio · Mathematics

80+ publications (h-index 28), 20 PhD/MSc supervised, a 15-year R&D partnership with a global energy major. Visiting positions in France, Australia, Israel and Germany.

2006 — 2016

Lecturer · DSBA Master

CentraleSupélec / ESSEC

Taught data science & business analytics; honored by students at their graduation ceremony.

2018 — 2024

Visiting Professor

École Polytechnique · U. of Queensland · Tel-Aviv U. · FU-Berlin
2007 — 2015
education · honors

Degrees

Ph.D. in Mathematics

PUC-Rio — Geometric Discrete Morse Complexes
2003 — 2005

Ph.D. in Computer Science

INRIA / Université Paris VI — Mesh Compression from Geometry
2002 — 2005

M.Sc. · Mathematics

Telecom ParisTech & PUC-Rio
2000 — 2002

Engineer

École Polytechnique — computer science & physics
1997 — 2000

Honors

Affiliated member

Brazilian Academy of Sciences
2012 — 2016

Keynote speaker

TopoInVis 2011, ETH Zürich
2011

Program chair

ACM SoCG 2013 · Sibgrapi 2011
2011 — 2013

Editor

Computer Graphics Forum · Image Processing On Line · Anais da ABC
students

Doctoral

Tiago Novello de Brito — discrete differential geometry
PUC-Rio · 2014
João Antônio Récio da Paixão — discrete Morse matchings: complexity & stable matching
PUC-Rio · 2014
Jyrko Correa Morris — foliating Marching Cubes' cases in 3D & 4D
IMPA · 2013
Maria de Andrade Costa — affine structures & isosurfaces
PUC-Rio · 2011
Renata Thomaz Lins do Nascimento — quad meshes
PUC-Rio · 2011
Roger Véron — affine estimators & applications
PUC-Rio · 2011
Thales Miranda de Almeida Vieira — smart galleries & camera placement
PUC-Rio · 2010
Allyson Ney Teodosio Cabral — tetraquads
PUC-Rio · 2010
Rener Pereira de Castro — statistical optimization of hierarchical searches
PUC-Rio · 2008
Clarissa Codá dos Santos C. Marques — real-time 3D animation, harmonic & modal
PUC-Rio · 2007

Master's

Thiago Elias Gomes — modeling & visualization of TriQuad
UFRJ · 2014
Guilherme das Neves Seguro — model reduction for flow simulation
UFRJ · 2014
Romulo Brito — invariant derivative filters
PUC-Rio · 2013
Rafael Lassance A. Martinez — Kalman filters
PUC-Rio · 2013
Karine Ribeiro Pereira — computational geometry for petroleum engineering
PUC-Rio · 2013
Renata Thomaz Lins do Nascimento — topology-based self-animated vector fields
PUC-Rio · 2011
Lis Ingrid Roque Lopes Custódio — barycentric coordinates for mesh deformation
PUC-Rio · 2010
João Antônio Récio da Paixão — feature-preserving vector field denoising
PUC-Rio · 2010
Betina Vath — union of balls, medial axis & 3D deformation
PUC-Rio · 2007
David Rey — distributions & immersions
PUC-Rio · 2007
Catiuscia Albuquerque Borges — connectivity-based geometry reconstruction
PUC-Rio · 2007
undergraduate research & final projects

Eric Cardona Romani '07 · Daniel Fleischman '07 · Matheus F. F. Maciel '07 · Carlos Simonsen Leal '07 · Bernardo Ribeiro '07 · Raffael Capano de Arruda '08 · Mariana Milazzo '08 · Lucas von Haeling Braune '09 · Victor Hugo M. Ferreira '09 · Cairo P. C. Caplan '09 · Rafael L. A. Martinez '06 · Erick C. S. Talarico '06 · Bianca de C. Lodoli '12–13 · Rafael Farias Cação '12–13 · Victor Hugo de O. da Silva '13 · Yukio Shiota Junior '13 · José Eliton Albuquerque Filho '12 · Leandro dos Reis Lopes '12 · Arthur de Paula Kolblinger '14 · Alexandre Maxinsang '14 · Maximiliano Faria '14 · Romain Faugeroux '14 · Anna-Lívia de Souza Ribeiro '14.

contact

Slower than email deserves — but I answer.

Happy to talk about TechBio, applied AI, doctoral programs, or anything geometric.

The longer record lives across a few profiles: