Building Spark AI (YC W24) to deploy clean energy faster. Prev: Engineering @brexHQ @Apple @Microsoft, comp sci @BrownUniversity

San Francisco, CA
1/7 We launched Spark on @ycombinator! It’s always been a dream to build software that powers society. As a teenager, I wrote a proposal for my high school to go solar and invited installers on campus. In 2018, I saw Brazil’s diesel crisis adversely impact my family’s business
YC W24's Spark (sparkhq.ai) uses AI to simplify utility-scale clean energy development, making data on grid interconnection and permits accessible. ycombinator.com/launches/KRg… Congrats on the launch, @thejuliawu and @taehkimmm!
14
8
159
55,856
Julia Wu retweeted
I’m excited to announce that @arceuslegal is launching with $17M in funding, led by @greycroftvc, with participation from @craft_ventures, @spc, and others. As a founder, I always hated how helpless I felt working with law firms. I went through four or five different firms and somehow the experience was always the same. I’d be waiting on something important to our business with no idea when I’d hear back. I’d have to re-explain our business over and over again. And I dreaded jumping on calls because I knew every minute was costing me money. We started Arceus because we believe every business deserves a better law firm. One that moves faster, costs less, and puts the client first. And we’re just getting started. ↓
241
164
1,464
2,127,898
Told my claw to stop exposing its own heartbeats, but it's kind of endearing to see it talking to itself while waiting on me 🥹
2
13
526
Update: considering putting Clawdie to sleep because Muse is outperforming 🥺
1
71
Julia Wu retweeted
incredible take
47
7,633
78,397
807,622
Julia Wu retweeted
shoutout to @thejuliawu on the pitch for Spark AI and @yaboilyrical for the soundtrack
1
1
3
415
Introducing Adaline 2.0 - The Agent Self-Improvement Layer Adaline turns Traces into Behaviors, Behaviors surface Issues, Issues become auto-generated Evals + Data, Adaline then generates new agent candidates and tests them. You review the winners and ship!
116
87
835
1,178,786
Julia Wu retweeted
Agents should have access to every system. Introducing Integuru: generate fast, reliable APIs for any platform⚡️ API calls complete in ~3 seconds with 99.9%+ success. No browsers or RPA. No data caching needed. With auth support. @InteguruAI is free to use. Thread below.
42
31
192
44,289
Julia Wu retweeted
30 mins into the claude code keynote and every speaker so far has been a woman. just saying 🫶🏻 @asvora @angjiang @katelyn_lesse @_catwu Dianne Penn @claudeai
82
91
1,813
586,578
Julia Wu retweeted
The “stop all datacenters” people are unwell
A city councilman’s home was shot at over a data center. His child was inside. No neighbor zoning disagreement justifies violence. Hyperbolic AI “doomer” rhetoric has consequences, and it’s time to say so. My latest in @realDailyWire
18
21
350
17,720
Julia Wu retweeted
Got rejected from every accelerator but YC Here's my story
39
9
298
27,697
Julia Wu retweeted
Claude Code this week has awakened my 25 year old self: the one that chugged red bulls and stayed up til dawn coding. WE ARE SO BACK
384
364
8,815
491,467
Congrats @divyahansg! Tremendous progress every time we meet to cowork on Saturdays
Founding Beacon with @nilamg has been the most intense but also fulfilling time of my life. In just a year, we’ve grown to a team of 30+ and acquired dozens of mission-critical software businesses that quietly power everyday life, helping them bring AI to real-world industries. We are deeply thankful to the entrepreneurs who have entrusted us with their life’s work and our partners at General Catalyst, Lightspeed, D1 Capital, MSD & BDT, and Sator Grove, along with our angels and advisors. This $250M Series B fundraise enables us to increase the scale of our ambitions to build a generational AI holding company. We are hiring across many roles! Check out our careers page.
2
5
678
When I graduated from college, I told myself "I will leave my job in big tech in less than 2 years to start a company." I broke that promise to join @brexHQ as an engineer in 2019, and it was one of the best decisions I made in my career
Brex is the only company proud of how many people leave. Over 100 alumni became founders (4x the industry average), raising more than $800M along the way, with $1B+ in exits, and even 1 IPO. @brexHQ is the best founder school on the planet. Quitters Welcome.
22
1,917
every time claude code says "you are absolutely right" I am less sure of my statement 🤦🏻‍♀️
2
4
502
was going to complain to my mom about a contract that's about to get signed but taking longer than I'd like, when she said "I was 20 yo, had $400 in my pocket, 1 suitcase and a one-way flight to hustle in the streets of Rio and built a profitable business" so I shut up
9
431
19/ one final thought today, the AI infrastructure boom is driving the majority of GDP growth in the US. once this infrastructure is deployed, we will need software to orchestrate, optimize, and financialize these assets. energy, compute, crypto is the allocation strategy
8
8
64
13,498
it used to be human code + human reviews but today was a bot code + bot review kind of day
4
494
We're looking for exceptional engineers who want the ownership, energy, and velocity of a founding team. We’re in person, 5 days/week in San Francisco.
1
1
195
If this resonates with you or someone you know, please reach out to me or email hiring@sparkhq.ai ⚡️
161