S

Stripe

Builds payment software for internet businesses

PhD Machine Learning Engineer Intern

Summer 2027Updated
CA$63.99 - CA$78.03/hr
Internship
PhD
Toronto, ON, Canada
In Person
AI & Machine LearningApplied Machine Learning

About the job

Requirements
  • A deep understanding of computer science, obtained through pursuing a PhD in Computer Science, Machine Learning, or a closely related field, with the expectation of graduating in Winter 2027 or Spring/Summer 2028.
  • Practical experience with programming and machine learning through projects, classwork, or research; familiarity with Python, Scala, Spark, Pandas, NumPy, and Scikit-learn.
  • Expertise in machine-learning areas such as supervised and unsupervised learning techniques and machine-learning operations, and possibly experience in Large Language Models or Reinforcement Learning.
  • Ability to work on collaborative projects and receive and apply feedback from various stakeholders.
  • A proactive approach to learning unfamiliar systems and the ability to understand complex systems independently.
  • Intent to return to the degree program after completing the internship/co-op.
  • Submit a detailed resume or LinkedIn profile showcasing work history.
  • Submit examples of relevant work and approach to learning, such as GitHub repositories, StackOverflow contributions, or other project portfolios.
Responsibilities
  • Develop and deploy large-scale machine-learning systems that drive business value across various domains.
  • Design, train, improve, and launch machine-learning models through the end-to-end process.
  • Write production-scale machine-learning models for deployment to help Stripe enable economic infrastructure access for businesses globally.
  • Collaborate across teams to incorporate feedback and proactively seek solutions to challenges.
  • Learn new technologies and approaches rapidly, ask insightful questions, and communicate work status effectively.
Desired Qualifications
  • Two years of university education or equivalent experience, with in-depth knowledge in specific machine-learning domains.
  • Published and presented peer-reviewed articles in top-tier venues.
  • Experience writing high-quality pull requests, maintaining good test coverage, and completing projects with minimal defects.
  • Familiarity with navigating new codebases and managing work across different programming languages.
  • Written communication skills to clearly articulate work to team members and wider Stripe audiences.

About the company

Stripe builds payment software that businesses of all sizes plug into their websites and apps to accept money online and in person. After its public launch in 2011, it won over internet startups by letting developers start taking payments with a few lines of code. Businesses use it to take cards and digital wallets, block fraud, bill subscriptions, and pay out sellers on online marketplaces, while Stripe earns a fee on each payment plus charges for add-on tools. Irish brothers Patrick and John Collison founded Stripe in 2010, and it is based in South San Francisco, California, and Dublin, Ireland. In 2016, John Collison, then 26, became the world's youngest self-made billionaire.

Company Size

5,001-10,000

Company Stage

Private

Total Funding

$8.7B

Headquarters

South San Francisco, California

Founded

2010

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Simplify's Take

What believers are saying

  • February 2026 results: Stripe processed $1.9 trillion in 2025, up 34%, roughly 1.6% of world GDP.
  • Equity keeps gaining value: a February 2026 employee share sale valued Stripe at $159 billion, 74% above a year earlier.
  • AI leaders run on Stripe: it says 88% of the Forbes AI 50 companies, including OpenAI and Anthropic, use it.

What critics are saying

  • Cashing out depends on company-run share sales: Stripe's leaders called staying private "a growing advantage" in August 2026.
  • A big AI shopping launch faltered: OpenAI scaled back ChatGPT's Instant Checkout, built with Stripe, in March 2026.
  • Washington is watching who it cuts off: the FTC warned Stripe in March 2026 against dropping customers over their beliefs.

What makes Stripe unique

  • Many founders start on Stripe: it says 25% of new Delaware corporations are created through Atlas, its company-setup service.
  • It owns a crypto payments arm: Stripe paid $1.1 billion in 2025 for Bridge, which moves money in dollar-pegged stablecoins.
  • Software is a second business: February 2026 projections put Stripe's billing and tax tools on a $1 billion annual pace.

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Benefits

  • Inclusive coverage - We provide a thoughtful and balanced set of benefits that allow Stripes to be their best selves and do great work. Whether that means offering comprehensive mental, physical, and medical health plans, supporting Stripes' financial futures, providing fertility benefits and parental leave, or making sure Stripes have access to healthy food at the office, our robust programs put Stripes and their families first.
  • Growth by way of learning - We are voracious learners and teachers. Our Education team delivers an onboarding and product training curriculum for all new Stripes, and hosts expert-led courses on things like project management fundamentals and macroeconomics. Beyond the formal program, Stripes are constantly sharing knowledge with each other through conversation, documentation, reading groups, and informal talks.
  • A principled approach to food - The food program holds a special place in Stripe's history and future. These Stripes come to our kitchen from a breadth of backgrounds and experiences, and focus on one proposition—respect. This is apparent not only in the local ingredients they work with or in the gracious, teamwork-driven buffet lines, but also in their approach to growing a global team through sustainable food practices and minimal waste.

Growth & Insights and Company News

6 month growth

3%

1 year growth

3%

2 year growth

3%
Upstarts Media
Oct 28th, 2026
Stripe alums launch Rocker, an AI work assistant for big businesses, with $13M

Rocker, an AI assistant for large organisations, has emerged from stealth with $12.85 million in funding. Greycroft led the round, with Anthropic, Menlo Ventures' Anthology Fund, Matchstick, and Stripe also taking part. Founded by former Stripe colleagues Alex Vogenthaler, chief executive officer, and Peter Terrill, the app connects to tools such as Google Docs, Slack, and email. It identifies a user's top priorities, flags critical messages and decisions that are slipping through, and cuts busywork. Rocker builds a context graph for each user inside a company's own cloud environment, so it does not access sensitive enterprise data. It is testing with large organisations, including public companies, and opens its waitlist today, prioritising larger teams.

Yahoo Finance
Oct 24th, 2026
Stripe's stablecoin card is no major threat to XRP, but its bridge-currency thesis is fading

Stripe and its partner Plasma plan to launch payment cards for spending stablecoins across five currencies. Announced on October 15, the cards will be offered in more than 100 countries in 2027. Because users spend stablecoins directly, they avoid currency exchange fees and waits for international transfers to clear. That targets the problem XRP was built to solve as a bridge currency. The World Bank puts the average cost of sending $200 abroad at 6.3%. Still, the two serve different customers. Stripe's card targets individuals and the businesses that issue cards, while XRP, with a market cap of about $83 billion, remains a niche tool for institutions making very large transfers. XRP faces bigger problems: Ripple's own cross-border payment options now list stablecoins and fiat currencies, not XRP. The XRP Ledger collected only $1.6 million in fees in the 30 days ended October 21.

Brand Communion
Oct 22nd, 2026
Stripe appoints Isabella Liu as Head of Communications for Asia.

Stripe appoints Isabella Liu as Head of Communications for Asia. Liu previously headed APAC communications at Discord. 0:00 / 1:19 Stripe has appointed Isabella Liu as Head of Communications for Asia, expanding her responsibilities across the financial infrastructure company's key markets in the region. Based in Singapore, Liu will oversee communications across Southeast Asia, Greater China and India, along with the company's broader Asia-Pacific communications operations, excluding Japan. In her new role, Liu will focus on strengthening Stripe's communications around product innovation, customer trust and cross-border storytelling. She will also work to enhance awareness of the company's initiatives, developments and strategic priorities across key Asian markets. Liu previously served on Stripe's APAC Communications team, where she worked on initiatives centred on product innovation, building customer trust and communicating the company's offerings and developments across markets. Before returning to the company in a regional leadership capacity, Liu headed communications for Discord in APAC. During her tenure, she and her team worked to raise awareness of the global messaging platform's product launches, policy developments and corporate initiatives across the region. Her professional experience also includes a stint at Amazon, where she led economic policy communications across APAC, and roles at Twitter, now known as X, spanning corporate and policy communications. Across these positions, she has built experience in strategic communications, corporate affairs, public policy and reputation management for major global technology companies.

Small Business Trends
Oct 22nd, 2026
Stripe launches Treasury for agents, streamlining startup finances.

Stripe launches Treasury for agents, streamlining startup finances. Small business owners often juggle a myriad of responsibilities, and with technology evolving rapidly, many are turning to innovative solutions to streamline operations. Stripe, a payment processing platform, recently announced the launch of Stripe Treasury for agents, an initiative designed to empower startups to manage their financial operations more efficiently, particularly using AI agents. This move could significantly impact how small businesses operate, offering both opportunities and challenges. Stripe Treasury for agents allows businesses to conduct financial tasks directly within their existing payment management platform, providing substantial benefits for startups keen on enhancing their operational efficiency. As JR Farr, product lead for Stripe Treasury, notes, "Every founder wants to spend more time building and less time on admin." This new feature is aimed at reducing the administrative burden on founders by enabling agents to handle routine financial tasks. With Stripe Treasury for agents, small business owners can assign financial responsibilities to AI agents - like ChatGPT and Claude - allowing them to check balances, pay invoices, transfer funds between accounts, and convert currencies without needing to learn new software. In future updates, users will also be able to empower agents to create cards and set spending limits, increasing the utility of these digital helpers. The emphasis on efficiency is particularly beneficial for solopreneurs and small teams. According to recent statistics, the number of solo founders earning over $1 million has doubled, indicating a shift towards leaner operational models. In this new landscape, small businesses must find ways to maximize their resources, and Stripe's solution could be a game changer. A prime example of this innovative approach comes from Vlad Stan, founder of Kubrio, an educational platform for children. With AI agents managing various aspects of his business, Stan describes his reliance on agents, saying, "Kubrio runs on one founder plus AI agents." Stan utilizes Stripe Treasury as his main business account, where an AI agent named Stash evaluates the company's financial health daily, providing reports on balances, subscriptions, and payments. This streamlined process allows Stan to focus more on creative aspects rather than financial micromanagement. However, while the benefits are clear, small business owners should also consider potential challenges associated with integrating AI into their financial operations. The ability to designate permissions for agents offers flexibility, allowing owners to determine which financial actions can be taken autonomously and which require human approval. This creates a system of checks and balances. Nevertheless, it is essential for business owners to remain vigilant about security and operational oversight, particularly in determining the right level of access for agents. Another consideration is the learning curve associated with implementing new technology. While Stripe Treasury for agents aims to simplify processes, it still requires some initial time investment to understand how to set up agent interactions within the Stripe ecosystem. For small business owners already strapped for time, this aspect could add a layer of complexity that needs addressing. Furthermore, small businesses should remain aware that Stripe, while offering robust services, is not a bank, and banking services are provided through a third-party partner. Understanding the nuances of this relationship will be critical for managing funds effectively and ensuring compliance with financial regulations. Ultimately, Stripe Treasury for agents presents a noteworthy opportunity for startups looking to optimize their financial management. By automating routine tasks through AI agents, founders can redirect their focus toward growth and innovation, a crucial factor in a competitive landscape. As more small businesses explore these tools, the landscape of modern entrepreneurship will continue to evolve, blending technology with essential business functions. For those interested in diving deeper into the specifics of this new service, Stripe offers additional documentation here. As small business owners consider incorporating these innovative technologies, the potential to transform financial operations into a seamless aspect of daily management becomes increasingly tangible. Image via Google Gemini

This Week in Fintech
Oct 21st, 2026
Exclusive: A look at Stripe's next push beyond payments: Treasury for Agents.

Exclusive: A look at Stripe's next push beyond payments: Treasury for Agents. Oct 21, 2026 Payments giant Stripe announced Wednesday a new set of capabilities dubbed Treasury for Agents, the company tells This Week in Fintech exclusively. The new toolkit allows startup founders to use AI tools such as ChatGPT, Cursor and Claude to pay invoices, transfer funds between accounts and convert currencies. For example, a founder paying a contractor could ask an agent to review an uploaded invoice, check for duplicate payments and find the contractor's details from earlier transactions. Next, the agent could prepare the payment for approval without the founder having to switch between an AI tool and financial providers. The capabilities are in public preview, JR Farr, product lead for Stripe Treasury, said in an exclusive interview. They build on Treasury, which brings banking, cards, payouts and other financial services into the same dashboard businesses use to accept payments. A bank account is one of those products. (Stripe is not a bank, and Fifth Third Bank provides its checking accounts.) More than 10,000 users already use Treasury for Agents to read financial information and check balances, according to Farr. A smaller group has been testing agents' ability to carry out financial tasks, though he did not say how many users are making transactions through agents. For Stripe, adding agents is part of a broader - and concerted - effort to become the place startups manage their finances, beyond accepting customer payments. When asked whether the company wants Treasury for Agents to help make Stripe the primary financial account for startups, Farr responded: "Absolutely." Farr brings his founder experience to that effort. Stripe acquired his company, Lemon Squeezy, in 2024. "I'm building a banking and finance product that I would want for me as a founder," he said. JR Farr, product lead at Stripe Treasury; Image credit: Stripe What agents can do. The way it works is fairly straightforward. Founders can connect agents to Treasury through Stripe's model context protocol, or MCP, server, granting them access to Stripe's data and financial tools. Any agent that can connect to the server can use Treasury for Agents, according to Farr. Personal agent Muse, for example, can connect to a Treasury account to check balances and analyze spending. Users can choose which accounts an agent can access and whether it can read information or perform actions within each account. Stripe enforces those permissions, Farr said. For refunds and payouts involving real money, a person must confirm the transaction before funds move. But what happens if an agent performs an unauthorized transaction or conducts an incorrect payment? Stripe had not yet encountered that situation and would investigate if it happened, Farr said. Stripe also plans to let agents create cards and allow businesses to set spending limits for their agents. One founder, with help from agents. In a statement announcing Treasury for Agents, Stripe described the case of Kubrio, a platform where children ages 6 to 13 create films, games, comics and robot designs. The company has just one employee - its founder, Vlad Stan. His Grok agent, Stash, connects to Kubrio's Stripe Treasury account and sends him a daily report on balances, subscription changes, failed payments and refunds. He plans to have it prepare transfers and payments to contractors and creators for his approval, Stripe said. Notably, solo founders accounted for 63% of C corporations formed through Stripe Atlas in the second quarter of 2026, according to the company. But Farr said the tools are also intended for venture-backed and bootstrapped startups with teams. He sees them helping founders keep up with routine financial work without hiring a large finance department, particularly when paying people located in different countries. A bigger role in startup finances. As more of the behind-the-scenes financial work happens through Stripe, Farr sees an opportunity to give founders a more useful view of their businesses. In his view, the ability to bring payment revenue, account balances and spending together could help them better understand their finances. Also, keeping money within Stripe could also mean it's available sooner, so that founders wouldn't have to wait for payments to settle and move to another bank. Over time, Farr envisions agents drawing on a company's payment and banking history to help founders understand cash flow, customer retention and seasonal patterns, and then use that information to make decisions. Stripe also wants to work with startups before they earn their first revenue. Farr described businesses incorporating through Atlas, receiving investment in a Treasury account and using those funds to get started. He did not spell out how Stripe plans to make money from Treasury for Agents, saying the immediate focus is getting businesses to use it and making Stripe more useful to existing customers. "It's more of how do we provide more value for the users to trust and stay with Stripe," Farr said.