python
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Nehal Madhani Followed the Paperwork
He left a restructuring practice, taught himself to code, and discovered that customers needed something different from what he had built. The founder of Alt Legal has been following that clue ever since.
Peter Hadlaw and the Quiet Machinery Behind Getting Paid
Tesorio's founding engineer works where machine learning meets the stubborn rituals of accounts receivable. His other lens is literal: a camera trained on city light, small details and the world beyond the spreadsheet.
David DeSanto and the Useful Art of Breaking Things
Anaconda's CEO spent years learning how software fails. Now the developer, security researcher and product operator is applying that education to a harder problem: making open AI useful without asking enterprises to surrender control.
Anuraag Gutgutia
Anuraag Gutgutia is co-founder of TrueFoundry, a San Francisco-based enterprise AI platform that lets companies build, deploy, and govern generative and agentic AI inside their own cloud infrastructure. A quantitative analyst turned repeat entrepreneur, he spent seven years at WorldQuant rising to VP of Portfolio Management and the CEO's office before co-founding the talent platform EntHire (acquired by InfoEdge/BigShyft) and then TrueFoundry in 2021 alongside two IIT Kharagpur batchmates. TrueFoundry has raised $21.3M in total funding - including a $19M Series A led by Intel Capital in February 2025 - and serves Fortune 1000 companies seeking to run AI workloads without infrastructure complexity or data-sovereignty tradeoffs.
Tony Holdstock-Brown
Tony Holdstock-Brown is the co-founder and CEO of Inngest, a San Francisco developer platform that gives engineers a durable, observable execution layer for background jobs, workflows, and AI agents. A self-described tinkerer since age 10 and former Docker engineer, he started Inngest in 2021 with CTO Dan Farrelly after the two met in a New York co-working space. The company has raised roughly $31.6M, including a $21M Series A led by Altimeter in 2025, on the thesis that in an AI era the real moat is how fast a team can iterate.
Davide Asnaghi
Davide Asnaghi is the co-founder and CEO of Diode Computers, a startup rebuilding how printed circuit boards are designed and manufactured. An Italian-born engineer trained at UC Berkeley, he spent years building hardware at Apple's Special Projects Group and medical-device companies before starting Diode to replace legacy EDA tools with open-source, AI-friendly software: a Python design language backed by a Rust compiler that turns requirements into manufacturable circuit boards in a fraction of the usual time. Diode raised an $11.4M Series A led by Andreessen Horowitz and partners with Anthropic to make Claude a more capable electrical engineer.
Erik Bernhardsson
Erik Bernhardsson is the founder and CEO of Modal Labs, a serverless cloud platform that gives AI engineers on-demand GPU compute with sub-second container starts. A Swedish engineer trained in physics at KTH, he built the first version of Spotify's music recommendation system (including the groundwork behind Discover Weekly), open-sourced the widely used Luigi and Annoy libraries, then ran a 300-person engineering org at Better.com before starting Modal in 2021. He is also a prolific blogger whose essays on engineering, data teams, and startups reach a large technical audience. In 2026 Modal raised a $355M Series C at a $4.65B valuation.
Jonathan Cornelissen
Jonathan Cornelissen is a Belgian entrepreneur, PhD in financial econometrics, and the co-founder and founding CEO of DataCamp, the online data science education platform he started in 2013. Frustrated while teaching himself R during his doctorate, he built DataCamp to make data skills accessible through interactive, browser-based courses. Over six years as CEO he grew it to more than 10 million learners, 200,000 paying subscribers, 2,500 enterprise customers and over $50 million in annual recurring revenue. He authored an introductory R course completed by over a million learners. Since stepping back from the CEO role he has focused on angel investing across education, AI and crypto, and writes about company building, hiring and startup equity.
Akshay Agrawal
Akshay Agrawal is the co-founder and CEO of marimo, an open-source reactive Python notebook stored as plain Python files so it is reproducible, git-friendly, runnable as a script, and deployable as an app. A Stanford PhD advised by Stephen Boyd, he co-built version 1.0 of CVXPY, created the embedding library PyMDE, and worked on TensorFlow 2.0 at Google Brain. marimo has grown past 20,000 GitHub stars and raised a $5M seed round led by AIX Ventures, backed by figures including Jeff Dean, Wes McKinney, and Clement Delangue.
Sammy Sidhu
Sammy Sidhu is the co-founder and CEO of Eventual, the company behind Daft, an open-source, Python-native data engine built to wrangle messy multimodal data like images, video, audio and LiDAR at petabyte scale. A UC Berkeley EECS grad with a background in high-performance computing and deep learning, he cut his teeth on Wall Street high-frequency trading and then on the perception stacks of self-driving cars at DeepScale (acquired by Tesla), Lyft Level 5 and Woven Planet (Toyota). After repeatedly watching brilliant engineers burn 80% of their time fighting data plumbing instead of building, he and Jay Chia turned that frustration into Eventual. Daft now processes petabytes daily at Amazon, CloudKitchens, Together AI and Essential AI, and the company has raised roughly $30M from investors including CRV, Felicis, Microsoft's M12 and Citi.
Matthew Rocklin
Matthew Rocklin is the creator of Dask, the open-source library that lets ordinary Python scale across thousands of machines, and the co-founder and CEO of Coiled, a New York-based startup that turns that capability into a cloud product. A physicist-turned-computer-scientist, he spent years inside Anaconda and NVIDIA building the plumbing of the scientific Python world before raising venture money to make planetary-scale data processing feel as simple as importing a library. His software runs at NASA, Capital One, and the US Air Force; his blog reads like a field journal of open-source maintenance, startup life, and walking across Spain.
Dr. Drang
Dr. Drang is the pseudonymous engineer behind 'And now it's all this,' the long-running blog at leancrew.com where he posts small, fully-explained scripts that bend macOS to his will. By day he is a practicing civil and mechanical engineer with a Ph.D. in stress and structural analysis; by night he writes Python in BBEdit, glues apps together with AppleScript and Shortcuts, and walks readers through every line of code. His pen name is an engineering in-joke - 'Drang' is German for stress - and he has guarded his anonymity for over two decades to keep his consulting clients from finding his musings on math, music, and Mac automation.
Amet Alvirde
Amet Alvirde is a founder and software engineer based in Mexico City, associated with Render - the cloud deployment platform that hit a $1.5 billion valuation after its $100 million Series C extension in February 2026. A long-time Linux advocate, TypeScript developer, and Fullscreen content creator since 2012, he maintains a public digital garden of philosophical writing in Spanish, shoots street photography on a Sony a7iv, and plays guitar. His GitHub projects span fitness data tooling, trading system analysis, and personal infrastructure - a practitioner who builds for himself as readily as for the platform serving 4.5 million developers.
Ankit Kumar
Ankit Kumar is a software engineer and technical leader at Modern Treasury, the San Francisco-based fintech building payment operations infrastructure for companies moving money at scale. With a Master's in Computer Science from Syracuse University, he built the foundations of Modern Treasury's full-stack Payments product - an integrated payment service provider (PSP) handling fiat and stablecoin payments across ACH, RTP, FedNow, and wire rails. Before payments, his career ranged from AR helmet prototypes for BMW's CES 2016 showcase to Android apps that earned the title 'The Ultimate Camera App' from the tech press.
Gopalakrishna Kuppuswamy
Gopalakrishna Kuppuswamy is Co-Founder and CTO of Cognida.ai, an enterprise AI company headquartered in Sunnyvale, California, that raised a $15M Series A from Nexus Venture Partners in February 2025. With 30+ years in technology - starting at CMC Limited in 1994 and spending a decade as VP at Hitachi Vantara - he now leads the engineering behind Zunō, Cognida's agentic AI platform that cuts enterprise AI deployment timelines from 6-8 months down to 10-12 weeks. Based in Hyderabad, he holds master's degrees from both the University of Hyderabad and the University of Illinois Urbana-Champaign, and has helped grow Cognida.ai to 250+ employees and $37.7M ARR.
Jessica McKellar
Jessica McKellar is the CEO of Pilot.com, the largest accounting firm for startups in the US, which she co-founded in 2017 alongside longtime collaborators Waseem Daher and Jeff Arnold. A MIT computer science alumna, she previously co-founded Zulip (acquired by Dropbox) and served as Director of Engineering at Dropbox. Beyond building companies, she has been a transformative force in the Python open source community, growing Boston's Python user group to the world's largest, and teaching Python inside San Quentin State Prison. Pilot reached unicorn status in 2021 with a $1.2B valuation and over $222M raised from Sequoia, Index Ventures, and Bezos Expeditions.
Linda Haviv
Linda Haviv is a Staff Developer Advocate at Anyscale and founder of CodingCrystals.com, best known for her wildly nonlinear path from philosophy major and professional singer to site reliability engineer and AI infrastructure advocate. After graduating summa cum laude as Baruch College's salutatorian, teaching herself to code at The Flatiron School, and spending years as a JavaScript developer and SRE at Fox Corporation, she joined AWS as a developer advocate before landing at Anyscale — the company behind Ray, the open-source distributed computing framework that powers OpenAI's ChatGPT training. She uses her platform to demystify AI infrastructure for developers everywhere, and sells STEM-inspired crystal jewelry on the side.
Mukunda S
Mukunda Srinivasagowda is a seasoned technologist and Co-Founder of SuperAGI, a Palo Alto-based AI company building a full-stack agentic intelligence platform. With over 13 years spanning Amazon, Zomato, and fintech unicorn Navi, he co-built SuperAGI from the ground up in 2023 alongside CEO Ishaan Bhola. The company's open-source autonomous agent framework earned 17,500+ GitHub stars, attracted a $10 million Series A led by Jan Koum's secretive Newlands VC, and spawned a suite of AI-native products including SuperSales, SuperMarketing, and SuperCoder - all targeting the shift from LLMs that generate content to agents that actually take action.
Naftali Harris
Naftali Harris is the Co-Founder and CEO of SentiLink, a San Francisco-based identity verification and fraud prevention company that helps over 400 financial institutions - including 10 of the 15 largest U.S. banks - detect synthetic identities and application fraud in real time. A Stanford-trained statistician who left his PhD program to become Affirm's first data scientist, Harris co-founded SentiLink in 2017 after seeing sophisticated fraud schemes up close. The company has raised $84 million in total funding, verifies over 3 million identities daily, and has been recognized by Forbes 30 Under 30 and American Banker's 2024 Innovators of the Year.
Robert Nishihara
Robert Nishihara is a co-founder of Anyscale, the company commercializing Ray - the open-source distributed computing framework powering AI workloads at OpenAI, Apple, Uber, and thousands of other organizations. A Harvard math grad and UC Berkeley PhD, he built Ray during his doctoral research to solve the tooling bottlenecks he personally experienced doing AI research. Anyscale has raised $259.6M and reached a $1B+ valuation under his leadership before he transitioned from CEO to a product-focused role in mid-2024.
Tony Zhao
Tony Zhao is the co-founder and CEO of Sunday, a Mountain View-based robotics company building Memo - a home robot trained on 10 million episodes of real household routines. A Stanford PhD dropout and UC Berkeley EECS alum, Zhao invented ALOHA and ACT during his doctoral research, open-source frameworks that became foundational to modern robot manipulation. Sunday reached unicorn status in March 2026 with a $165M Series B led by Coatue, putting the company at a $1.15B valuation with a mission to put a helpful robot in every home.
Ian Glow
Ian Glow is the co-founder and CEO of Zeromatter, a Mountain View-based simulation platform that lets robotics, aerospace, and autonomy teams build, test, and train anything in virtual environments. He previously helped pioneer Tesla's Autopilot simulation infrastructure - working as Manager of Autopilot Simulation - before striking out to democratize simulation tooling for the broader industry. Zeromatter has raised $45M and assembled a 75+ person team of engineers from Tesla, Cruise, Nvidia, Google, Microsoft, Activision, and id Software.
Tommy Dang
Tommy Dang is the co-founder and CEO of Mage, an open-source data pipeline and orchestration platform he founded in December 2020 after five years at Airbnb, where he built the Experiences product and a low-code internal tool called Omni used by over 1,000 employees. Mage has raised $11.8M across two seed rounds and grown to 8,700+ GitHub stars, positioning itself as a modern, developer-friendly alternative to Apache Airflow for building, running, and managing data pipelines at scale.
Daniel Svonava
Daniel Svonava is the Co-Founder and CEO of Superlinked, an ML infrastructure company building self-hosted inference infrastructure for vector search and document processing. A Slovak-born engineer and entrepreneur based in San Francisco, he spent six years as an ML Tech Lead at YouTube building ad performance systems powering over $10B in annual ad revenue before co-founding Superlinked in 2021. Superlinked raised a $9.5M seed round led by Index Ventures in March 2024, and the company is on a mission to make vector-based retrieval accessible and production-ready for enterprises.
Cody Coleman
Cody Coleman is the CEO and Co-Founder of Coactive AI, a San Jose-based enterprise AI platform that brings structure to unstructured visual content - images and video - using multimodal AI. Born in prison and raised by grandparents on Social Security, he earned a BS from MIT and a PhD from Stanford, where he co-created DAWNBench and MLPerf, the industry-standard ML benchmarking suite. Today he leads a 63-person company backed by $44M in funding from Emerson Collective, Bessemer Venture Partners, and Andreessen Horowitz, with a mission to make AI accessible regardless of background.
Harrison Chase
Harrison Chase is the co-founder and CEO of LangChain, the open-source framework that became the default scaffolding for developers building LLM-powered applications. Starting as an 800-line Python package he wrote as a side project in October 2022, LangChain has grown to serve 1 million+ developers, 80 million monthly downloads, and blue-chip enterprise customers from Uber to JPMorgan - reaching a $1.25 billion valuation after a $125 million Series B in October 2025. A Harvard-trained statistician who got into machine learning through sports analytics, Chase built LangChain to solve the problem he kept running into at work: there was no good way to chain LLM calls together into reliable, production-ready applications.
Jerry Liu
Jerry Liu is the co-founder and CEO of LlamaIndex, the open-source data framework that became essential infrastructure for connecting large language models to enterprise data. What started as a weekend side project in November 2022 - an indexing tool he built to feed his own data into GPT-3 - grew into a company with $46.5M in total funding, 600,000+ monthly downloads, and clients including Salesforce, KPMG, and Carlyle. A Princeton computer science graduate who published GAN research as an undergrad, Liu moved from Quora's feed ranking team to Uber's autonomous vehicle research labs before co-founding LlamaIndex with former Uber colleague Simon Suo in early 2023.
J. Scott Zimmerman
J. Scott Zimmerman is the CEO and co-founder of Xola, a San Francisco-based SaaS platform that powers booking, back-office management, and marketing for tour and activity operators worldwide. A licensed physician who completed a neurology residency at Stanford, Zimmerman chose Stanford precisely for its proximity to Silicon Valley, coding in Python during spare hospital moments - sometimes until 2am - while simultaneously building the company that would become Xola. He founded Xola in fall 2011 after recognizing that real-time technology had transformed flight, hotel, and car rental reservations, but the $135 billion tours-and-activities market remained largely undigitized. Backed by investors including Rakuten Travel, Michael Burry (of 'The Big Short' fame), and Google Analytics co-creators Scott and Brett Crosby, Xola has grown to serve thousands of operators across North America, Western Europe, and beyond.
Jess Ramos
Jess Ramos is a data analytics educator, LinkedIn Top Voice, and founder of Big Data Energy - a media and education brand with 500,000+ followers across platforms. With an MSBA from the University of Georgia, she turned a corporate analytics career (peaking at $153K at Crunchbase) into a thriving solo business after being laid off in 2023. She runs a Substack newsletter with 45,000+ subscribers, teaches SQL to 50,000+ students via LinkedIn Learning, and has brand partnerships with IBM, AWS, Snowflake, NFL, and Claude (Anthropic). Her origin story - doubling her salary 110% in 11 months - became a viral moment that built her community of data professionals seeking real, human-centric career guidance.
Kent Beck
Kent Beck is the creator of Extreme Programming (XP) and a pioneer of Test-Driven Development, pair programming, and the Agile Manifesto. A programmer with 52+ years of experience, he co-created JUnit with Erich Gamma, co-invented CRC cards and design patterns in software with Ward Cunningham, and spent seven years coaching at Facebook. Today he runs the 'Software Design: Tidy First?' Substack newsletter (123,500+ subscribers in 195 countries), hosts the Still Burning podcast, and explores augmented human-AI coding. In April 2026 he publicly announced a Parkinson's disease diagnosis, continuing his mission to help technologists feel safe in the world.