Principal Engineer at Google, AI and Infrastructure

Joined May 2009
63 Photos and videos
Joan Smith retweeted
You can write a self-replicating physical program in just 45 tokens (RNA bases). That's small enough to emerge spontaneously via brute force recombination at scale.
AI is cool and all... but a new paper in @ScienceMagazine kind of figured out the origin of life? The paper reports the discovery of a simple 45-nucleotide RNA molecule that can perfectly copy itself.
46
118
1,485
171,727
Joan Smith retweeted
I’m excited to share a new postdoctoral opportunity in my lab at Stanford to study the consequences of gene dosage alterations in iPS cells. Check out the posting below and shoot me an email if you’re interested -
2
44
146
16,179
Joan Smith retweeted
New from my lab on bioRxiv - we found an existing drug that appears to be safe in humans that selectively kills chemotherapy-resistant cancer cells.
A clinical-stage oncology compound selectively targets drug-resistant cancers biorxiv.org/content/10.1101/… #biorxiv_cancer
7
50
339
59,489
Joan Smith retweeted
Thrilled to share our new paper describing the development and characterization of CDK11 inhibitors for cancer therapy. We also establish a new system that I think represents a huge leap forward in our ability to understand drug toxicity in a living organism.
2
17
121
16,226
4 Jun 2025
I'm thrilled to share that my family and I are moving to Palo Alto. I'll be continuing my work at Google building out our AI infrastructure for maximal efficiency and speed.
1
1
470
4 Jun 2025
It's an incredible time for the field and our company, and I am so excited to continue this work in-person with my brilliant colleagues. And, pulling everything together, my husband Jason will be joining the faculty at Stanford, moving his cancer research lab from Yale.
1
137
4 Jun 2025
I'm eager to get to know our new community -- please reach out and say hi!
114
Joan Smith retweeted
An interesting trend I found: Among the top 10 national winners at the Intel/Westinghouse Science Fair from 1990 to 2002, 66% of them are now in academia. Among the same group from 2003 to 2014, less than a third are academics.
35
102
869
238,404
Joan Smith retweeted
Check out our new study in @ScienceMagazine, where we take on a 100-year-old debate: what’s the role of aneuploidy in cancer? We discovered that genetically removing extra chromosomes blocks cancer growth - a phenomenon we call “aneuploidy addiction”. science.org/doi/10.1126/scie…
50
335
1,200
384,836
Joan Smith retweeted
Welcome Tavi Glenn Sheltzer-Smith! Born on 4/21/22. 8 pounds 3 ounces, 21 inches long. Mother and baby are doing great!
32
2
308
Joan Smith retweeted
18 Nov 2021
a popular myth is that people who are Very Computer have computers that work. nothing could be further from the truth. the Very Computer are capable of generating much more novel and fascinating ways to make computers not fucking work and exercise this capability wantonly
258
5,826
23,754
Joan Smith retweeted
New paper from @joans and me! A pan-cancer, cross-platform analysis identifies >100,000 genomic biomarkers for cancer outcomes. Plus, a website to explore the data (survival.cshl.edu) and a (controversial?) discussion of “cause” vs. “correlation” in cancer genome analysis.

Genome-wide identification and analysis of prognostic features in human cancers biorxiv.org/cgi/content/shor… #bioRxiv
8
76
256
Joan Smith retweeted
I’m excited to share that I’ll be joining the Yale School of Medicine as an assistant professor! My lab will be moving from CSHL to Yale this summer. And we’re hiring! If you’re interested in working on cancer genomics, chromosome engineering, or drug targeting, drop me a line.
100
128
1,472
22 Apr 2021
This is a great team of smart and kind people that does super cool, meaningful work.
3
Joan Smith retweeted
16 Nov 2020
Can’t wait for @wirecutter to tell me which vaccine to take.
27
323
4,085
Joan Smith retweeted
9 Nov 2020
Pfizer’s Covid-19 Vaccine Proves 90% Effective in Latest Trials wsj.com/articles/covid-19-va… SCIENCE WINS!!! This is GREAT news for mRNA technology, AWESOME for the stabilized prefusion spike antigen. I am in tears.
47
385
2,100
Joan Smith retweeted
same idea
1
14
104
20 Sep 2020
Motivated by RBG's death, and the incredible need to win in November, I spent some time this afternoon calling voters for Biden. It was straightforward and on-demand. No sign up or training needed, and the script is built in: joebiden.com/natcalls/
5
15
Joan Smith retweeted
I’ve spent more time just walking outside in the past 5 months than I have in my entire life and one thing that I feel more certain about than ever is how important it is to have free public parks, playgrounds, and outdoor green spaces accessible to all people in all communities.
65
2,185
16,541