Full-Time
Staff Machine Learning Engineer
Growth Activation
Posted on 10/31/2025
10,001+ employees
Visual discovery and bookmarking platform
No salary listed
Toronto, ON, Canada
Hybrid
In-office collaboration 1 time per quarter; candidates must be located in Ontario or British Columbia.
 AI & Machine Learning (2) |
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- 6+ years of experience building and shipping ML models, with focus on recommendation systems, ranking, personalization or growth challenges
- 2+ years of experience as a technical lead or senior IC, driving technical strategy and leading ML projects with measurable business impact
- Strong product mindset and ability to identify which ML problems to solve for maximum business impact, not just implement predetermined problems and solutions
- Track record of moving fast through experimentation, iterating based on results and driving projects to completion in ambiguous environments
- Experience with cold start challenges or working with users with limited interaction history, including techniques for personalization with limited user data
- Strong collaboration skills including partnering with product teams, influencing roadmaps, working across teams and driving alignment on technical approach
- Experience mentoring ML engineers and establishing technical best practices for a team
- Degree in Computer Science, Machine Learning, Statistics or a related field, or equivalent experience
- Lead the technical roadmap for activation ML, developing expertise in cold start challenges for users with limited interaction history and defining the highest-impact opportunities to pursue
- Drive hands-on ML work including building models from scratch, feature engineering and rapid experimentation to understand what drives activation for new and returning users
- Partner with other ML teams (homefeed, notifications, search, User Understanding, ML Infra) to influence their roadmaps, ensure new and returning user needs are prioritized and identify where activation should build specialized capabilities
- Work closely with product managers and data scientists to translate user problems into ML opportunities, scope ambiguous challenges and make pragmatic trade-offs between technical sophistication and business impact
- Run experiments to improve how we capture and leverage user intent signals from entry points, optimize initial content recommendations and test new approaches to activation
- Own technical strategy for key activation initiatives, making decisions about what to build, when to partner with other teams and how to maximize impact with a lean team
- Mentor and develop the ML team, establishing best practices for tackling new and returning user challenges and scaling impact over time
- Drive measurable improvements in user activation and retention metrics through thoughtful problem selection, rapid iteration and data-driven decision making
Pinterest is a visual discovery and bookmarking platform where users save ideas as pins on themed boards. People browse and search for ideas across topics like recipes, home decor, and fashion, then save or share pins to organize their interests. The product works through a feed and search results that show relevant pins, with tools for creating, organizing, and sharing boards. It earns revenue mainly from advertising—promoted pins shown in feeds and search results—and affiliate marketing, earning commissions when traffic leads to retailers. The platform differentiates itself with its visual discovery engine, focus on saving and organizing inspiration, and its advertising and affiliate ecosystem that targets users based on their interests. Pinterest’s goal is to help people discover ideas they love and turn that inspiration into action by connecting users with content creators and businesses.
Company Size
10,001+
Company Stage
IPO
Headquarters
San Francisco, California
Founded
2010
Simplify's Take
What believers are saying
- tvScientific acquisition boosts CTV outcomes 27% per $100 spent, LG gains 73% reach.
- Record 631 million MAUs up 11% YoY, 50% Gen Z, 10 straight double-digit quarters.
- Q2 2026 revenue guidance $1.133B-$1.153B tops consensus, ARPU hits $1.61.
What critics are saying
- Meta Platforms seizes ad share with superior targeting, slows Pinterest growth.
- Share-based comp at 23% of revenue erases $2B buybacks in two years.
- AI-generated images erode authentic visual discovery, cut user engagement.
What makes Pinterest unique
- Pinterest's taste graph powers AI personalization from billions of visual actions.
- Performance+ AI suite drives 30% of lower-funnel revenue one year post-launch.
- Visual discovery platform processes 80 billion monthly searches, half commercial.
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Benefits
Flexible and generous vacation and holidays
Global year-end paid company holiday closure
Comprehensive mental and physical health benefits for you and your family
Retirement plans that allow for tax savings
Fitness offerings
Personal and professional development resources
Adoption support, paid parental leave, egg freezing (in the US) and other family building benefits
Discounts and perks
Meals and snacks in the office
Growth & Insights and Company News
6 month growth
↑ 0%1 year growth
↑ 1%2 year growth
↑ 2%Snapchat owner cuts 1,000 jobs as says AI will reduce repetitive work. 1 hour ago Kali HaysTechnology reporter Snap is the latest tech company to cut jobs, citing the growing ability of artificial intelligence (AI) tools. The Snapchat owner has axed about 1,000 employees - 16% of staff - and withdrawn hundreds of open job roles, according to a financial disclosure. Evan Spiegel, Snap's co-founder and CEO, told employees the company was in "a crucible moment" and the goal of the cuts was to reduce yearly costs by $500m (£368m). Spiegel said that workers who remain at the company will be using AI tools to "reduce repetitive work and increase velocity," as "small squads" of employees have been doing in recent months. "Change of this magnitude and at this speed is never easy and it will not be seamless," Spiegel added in his memo. This cut at Snap marks at least the third larger scale layoff at the company since 2022, when it conducted its first major layoff which impacted 20% of its staff at the time. Spiegel's comments on Wednesday are the first time he has pointed to AI as an explanation for staffing decisions. This year, activist investor Irenic Capital Management took a stake in Snap, saying in a public letter to Spiegel that it was "strange" the company remained unprofitable after 15 years in business and with hundreds of millions of monthly users. Irenic noted that an investor who put $1 into Snap when it went public in 2017 would be left with a stake worth only 23 cents today. An activist investor is a person or investment firm that buys shares in a company it believes is underperforming and then applies pressure for management and business changes. Snap now requires "a new way of working that is faster and more efficient, while pivoting towards profitable growth", Spiegel wrote in his memo to staff. His explanation echoed that of other tech executives this year who have begun citing the increased capability of AI technology, mainly tools that help software engineers do coding work, as they order their own mass job cuts. Already this year Amazon, Meta, Block, Pinterest and Atlassian, among others, have collectively laid off several thousand workers. Company executives have either pointed to increased use of AI tools meaning they need fewer workers, or noted that plans to spend hundreds of billions of dollars a year on investing in AI requires cost-cutting in other parts of the company. Jack Dorsey, the CEO of Block and the former leader of Twitter, said at the end of February that the rise of AI tools for tech workers "fundamentally changes what it means to build and run a company". He also said people in the industry should expect further job cuts at "the majority of companies" over the next year.
Pinterest's fair value estimate has been trimmed from $23.81 to $23.16, reflecting broader Wall Street caution as multiple firms reset price targets amid execution and competitive concerns. Several analysts, including Argus and HSBC, downgraded Pinterest to Hold in February, citing higher operating expenses, margin pressure and retail advertisers pulling back budgets. BofA highlighted a widening growth gap with larger competitors investing more heavily in AI tools. Firms including Barclays, UBS, JPMorgan and RBC Capital cut price targets, questioning monetisation and valuation. Recent developments include Pinterest joining an industry accord against online scams, whilst a pro-Iran group claimed responsibility for cyber incidents affecting the platform. The company also reportedly dismissed two engineers who tracked redundancies, raising governance questions.
Bragar Eagel & Squire, P.C. Announces that a class action lawsuit has been filed against Pinterest, Inc. and Encourages Investors to contact the firm. Bragar Eagel & Squire, P.C. Litigation Partner Brandon Walker Encourages Investors Who Suffered Losses In Pinterest (PINS) To Contact Him Directly To Discuss Their Options If you purchased or acquired Pinterest securities between February 7, 2025 and February 12, 2026 and would like to discuss your legal rights, call Bragar Eagel & Squire partner Brandon Walker or Melissa Fortunato directly at (212) 355-4648. NEW YORK, April 10, 2026 (GLOBE NEWSWIRE) - What's Happening: * Bragar Eagel & Squire, P.C., a nationally recognized stockholder rights law firm, announces that a class action lawsuit has been filed against Pinterest, Inc. ("Pinterest" or the "Company") (NYSE:PINS) in the United States District Court for the Northern District of California on behalf of all persons and entities who purchased or otherwise acquired Pinterest securities between February 7, 2025 and February 12, 2026, both dates inclusive (the "Class Period"). Investors have until May 29, 2026 to apply to the Court to be appointed as lead plaintiff in the lawsuit. Allegation Details: * The complaint alleges that the Company and its executives violated federal securities laws by making false and/or misleading statements and/or failing to disclose that: (1) Pinterest was experiencing and/or was likely to experience reduced revenues from its advertising partners; (2) Pinterest overstated its ability to manage the impact of U.S. tariffs on the macroeconomic environment in which the Company operated, including the foreseeable impact on its advertising partners; (3) the impact of the foregoing on Pinterest's advertising revenues was significant enough that Pinterest was facing and/or likely to face an imminent restructuring; and (4) as a result, Defendants' public statements were materially false and misleading at all times. Next Steps: * If you purchased or otherwise acquired Pinterest shares and suffered a loss, are a long-term stockholder, have information, would like to learn more about these claims, or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Brandon Walker or Melissa Fortunato by email at [email protected], telephone at (212) 355-4648, or by filling out this contact form. There is no cost or obligation to you. About Bragar Eagel & Squire, P.C.: Bragar Eagel & Squire, P.C. is a nationally recognized law firm with offices in New York, South Carolina, and California. The firm represents individual and institutional investors in securities, derivative, and commercial litigation as well as individuals in consumer protection and data privacy litigation. The firm has a nationwide practice and routinely handles cases in both federal and state courts. For more information about the firm, please visit www.bespc.com. Attorney advertising. Prior results do not guarantee similar outcomes. Follow us for updates on LinkedIn and Facebook, and keep up with other news by following Brandon Walker, Esq. on LinkedIn. Contact Information: Bragar Eagel & Squire, P.C. Brandon Walker, Esq. Melissa Fortunato, Esq. (212) 355-4648 [email protected] www.bespc.com
Young Futures has launched the Express Yourself Challenge Series, a $1.5 million funding initiative for US nonprofits developing solutions to help teenagers navigate gender pressures online. The programme will support over 10 organisations working with girls, boys and trans and gender-expansive youth. The series comprises three tracks: Girl On Fire addresses girls' confidence online, In My Dreams focuses on boys' emotional wellbeing and Just The Way You Are supports trans and gender-expansive youth. The In My Dreams track is backed by Kid Cudi's Big Bro Foundation. Selected organisations will receive grants and join Young Futures' five-month accelerator, offering leadership development, fundraising support and mentorship. The initiative is backed by several foundations and supported by Pinterest, which shares Young Futures' vision for healthier digital spaces.
How to use Pinterest's new Story Pins for creators. Last updated: 2026/04/05 at 3:44 PM News Room Published 5 April 2026 Pinterest has launched a new immersive storytelling feature for creators: Pinterest Story Pins. This new feature comes alongside a suite of creator-first features, including a new creator profile and analytics tools to track performance. Ready to get to grips with Pinterest's Story Pins feature? Here's everything you need to know: