O

Onescreen

Ad space buying platform with analytics

Founding Machine Learning Engineer

Full-TimeUpdated on 10/21/2026
No salary listed
Mid
Boston, MA, USA
In Person
AI & Machine LearningApplied Machine Learning

About the job

Requirements
  • Owned a production ranking, matching, or recommendation system end-to-end, including selecting the model, designing features, making evaluation methodology decisions, and taking responsibility when it drifted.
  • Strong production Python, including NumPy, Pandas, FastAPI, and SQLAlchemy.
  • Strong SQL and modern data warehouse experience.
  • Fluency in ranking and matching modeling, including learning-to-rank and retrieval and re-ranking patterns rather than classification alone.
  • Rigor in evaluation methodology, including holdouts, leakage prevention, and online-versus-offline gap measurement.
  • Comfort owning the data pipeline as well as the model.
  • Bias toward shipping, clear writing, and self-direction.
Responsibilities
  • Design and ship matching and ranking models for out-of-home inventory, including candidate generation, re-ranking, and geospatial-aware scoring.
  • Own the data warehouse layer end to end, including staging, marts, feature pipelines, freshness, and lineage.
  • Build offline and online evaluation infrastructure and measure the gap between them.
  • Publish ranking and matching APIs for product surfaces, with latency and quality service-level objectives.
  • Instrument model monitoring, including drift detection, prediction distribution, feature freshness, and retraining triggers.
Desired Qualifications
  • BigQuery experience.
  • Geospatial data experience, including H3, PostGIS, or GeoPandas.
  • Mobility or location data experience.
  • Embedding-based retrieval, including pgvector, FAISS, or vector databases.
  • Bandits, contextual bandits, or online learning.
  • A/B testing infrastructure design.
  • Causal inference.
  • dbt.
  • Ad-tech or out-of-home advertising domain familiarity.

About the company

O

Onescreen

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Website

OneScreen.ai provides a platform to buy and manage advertising space across digital and static billboards, helping agencies, marketers, and small businesses place the right content on the right screens at the right time. How it works: users access a centralized platform that offers campaign management, audience targeting, and data analytics to optimize ad spend and performance. Revenue comes from subscriptions to the platform and service fees for campaign management. The company also runs a Learning Center with resources on brand awareness, data privacy, and marketing strategies. What sets OneScreen.ai apart: it combines a user-friendly platform with actionable insights and analytics tailored for the digital-out-of-home and advertising space, targeting improved efficiency and ROI for clients. The goal is to streamline the advertising process and help clients achieve better advertising outcomes, especially in maximizing reach and effectiveness of campaigns across screens.

Company Size

11-50

Company Stage

Early VC

Total Funding

$16.2M

Headquarters

Boston, Massachusetts

Founded

2020

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Simplify Jobs

Simplify's Take

What believers are saying

  • Onescreen posted 68% year-over-year revenue growth in Q1 2026.
  • The company counts Rippling, Replit, Ramp, Hexclad, Deepgram, Monks, and OUTSHINE as customers.
  • September 2026 CEO Adam Skinner strengthens enterprise credibility and accelerates commerce-media partnerships.

What critics are saying

  • Vistar Media, Broadsign, and StackAdapt already dominate programmatic OOH distribution and reporting.
  • Onescreen's 68% Q1 2026 growth hides a small base and fragile enterprise retention.
  • If retail-media giants standardize off-site OOH buying, Onescreen becomes a feature, not a company.

What makes Onescreen unique

  • Onescreen unifies OOH inventory, audience data, and planning into one buying workflow.
  • Adam Skinner joined September 2, 2026, importing CitrusAd retail-media infrastructure expertise.
  • Closed beta MCP tools target enterprise research, inventory ranking, and AI-native OOH planning.

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Benefits

  • Health Insurance
  • Dental Insurance
  • 401(k) Retirement Plan
  • Paid Vacation

Growth & Insights and Company News

Headcount

6 month growth

2%

1 year growth

-2%

2 year growth

0%
TechBullion
Sep 2nd, 2026
Why Retail Media's core playbook is breaking beyond the digital shelf.

Why Retail Media's core playbook is breaking beyond the digital shelf. Posted on September 2, 2026 A decade ago, retail media barely existed as a line item on corporate ad budgets. Today, with U.S. retail media spending projected by EMARKETER to hit $69.3 billion in 2026 and on track to anchor a $142.1 billion commerce media market by 2030, the channel has solidified itself as the fastest-growing sector in modern advertising. However, the explosive growth of retail media networks (RMNs) is exposing a major structural bottleneck: digital sponsored product listings are approaching saturation. On-site retail search units face diminishing marginal returns as bidding competition escalates. To sustain double-digit growth rates, enterprise commerce media networks must look beyond mobile screens and ecommerce web apps toward physical, real-world touchpoints. Today's appointment of Adam Skinner, the former Chief Operating Officer of CitrusAd and Managing Director of Retail Media at Epsilon, as Chief Executive Officer of out-of-home (OOH) media platform Onescreen marks a clear turning point for the category. Skinner, who helped scale CitrusAd from fewer than 10 clients to over 150 global retailers prior to its acquisition by Publicis Groupe's Epsilon, spent fifteen years building the underlying architecture that made digital retail shelves buyable, comparable, and provable. His pivot to physical space signals that the "off-site" commerce media frontier is moving directly out-of-home. The core challenge facing off-site retail media expansion has historically been operational fragmentation. While on-site digital media offers instant platform access, physical spaces have been bogged down by manual transactions and disconnected media sellers. By introducing automated supply-side consolidation, commerce marketers can now treat real-world placements as seamless extensions of their digital ad stacks. "Retail media didn't win because shoppers suddenly fell in love with sponsored listings. It won because someone made fragmented inventory buyable, impressions comparable, and outcomes provable," said Skinner. "Out-of-home has better inventory than retail media ever had, but it has lacked that connective infrastructure. Budgets follow legibility, not enthusiasm. What drew me to Onescreen is that the hard part is already done - the team has made real-world media plannable and accountable on the front end, before the money leaves the account. Extending that into retail and commerce media, right as the standards arrive and the budgets line up behind them, is the most interesting problem in media today." For CPGs, D2C brands, and retail media network operators, applying supply-side retail media standards to out-of-home media lets physical campaigns placed right outside retail store doors be activated with the same data rigor and automated ease as digital shelf units. As physical and digital commerce continue to merge into unified omnichannel strategies, running the 2020 retail media supply playbook in physical space may be the key to unlocking the next $70 billion in commerce media growth.

Associated Press
Sep 2nd, 2026
Onescreen appoints retail media veteran Adam Skinner as CEO to scale out-of-home advertising

Onescreen, a modern out-of-home advertising platform, has appointed Adam Skinner as chief executive officer. Skinner joins from Epsilon, where he served as managing director of retail media, and previously held leadership roles at CitrusAd before its 2021 acquisition by Publicis Groupe's Epsilon. The company posted 68% year-over-year revenue growth in Q1 2026, following 67% growth in the second half of 2025. Skinner brings 15 years of experience building media network infrastructure and was integral to launching over 150 media networks globally. Onescreen works with clients including Rippling, Replit, Ramp, and Hexclad, providing data-driven out-of-home advertising solutions. Skinner replaces Alex Ewing, who led the company since 2023.

OneScreen.ai
Sep 2nd, 2026
Big news: commerce media veteran Adam Skinner joins Onescreen as CEO.

Big news: commerce media veteran Adam Skinner joins Onescreen as CEO. September 2, 2026 Chelsea Waite Let's be honest: nobody falls in love with advertising because they saw a sponsored search result for laundry detergent. Retail media didn't explode into a $70B industry because consumers suddenly craved more product listings. It won because smart builders fixed the plumbing behind the scenes, turning a messy web of fragmented store inventory into something seamless, measurable, and insanely easy to buy. Out-of-Home (OOH) media is sitting on the exact same goldmine. Real-world advertising has the attention, the high-impact screens, and record-breaking momentum ($9.5B and 20 straight quarters of growth!). But for too long, buying a billboard or a digital screen network has felt like booking a flight in 1995: scattered spreadsheets, manual emails, and fragmented networks. OneScreen AI, Inc. is here to fix the plumbing. And to pull it off, OneScreen AI, Inc. just brought on someone who literally wrote the playbook. Say Hello to Its New CEO: Adam Skinner Adam joins Onescreen as Chief Executive Officer to help OneScreen AI, Inc. scale modern OOH and build the bridge between real-world media and enterprise digital budgets. If his name sounds familiar, it's because he's spent the last decade-plus architecting high-growth infrastructure across the media landscape: * CitrusAd: He joined as part of an early engineering team with under 10 clients and helped scale it to 150+ global retailers across 30+ countries before its acquisition by Publicis Groupe's Epsilon. * Epsilon: As Managing Director of Retail Media, he ran P&L across commercial, product, tech, and ops for a 200+ person team while shaping identity-powered commerce media. * Industry Heavyweight: He sits on multiple IAB committees, was recently honored with a 2026 P2PI Retail Media Award, and has helped launch over 150 global media networks. Simply put, Adam knows how to turn messy physical infrastructure into a predictable, high-performing growth engine. "Out-of-home has better inventory than retail media ever had, but it has lacked connective infrastructure. Budgets follow legibility, not enthusiasm. What drew me to Onescreen is that the team has made real-world media plannable and accountable on the front end, before the money leaves the account." - Adam Skinner, CEO Why Now? Performance Media Belongs in the Physical World This milestone comes at a time when Onescreen is moving fast. Coming off a 67% growth sprint in late 2025, OneScreen AI, Inc. posted a 68% YoY revenue increase in Q1 2026. Modern brands, from high-growth powerhouses like Rippling, Ramp, and Replit to direct-to-consumer icons like Hexclad, are no longer treating OOH as an experimental "brand awareness" line item. They're using it as a permanent performance channel. OneScreen AI, Inc. has doubled down on that vision, launching everything from audience intelligence tools to an AI-native planning experience that plugs real-world inventory directly into enterprise AI workflows. With Adam at the helm, OneScreen AI, Inc. is taking that foundation and pouring gasoline on it. OneScreen AI, Inc. also want to extend a massive thank you to Alex Ewing for his leadership since 2023, setting the stage for this next chapter of hyper-growth. The physical world is officially legible, measurable, and performance-ready. OneScreen AI, Inc. couldn't be more excited to have Adam leading the charge. Check out the full announcement on Business Wire: https://www.businesswire.com/news/home/20260902469903/en/Onescreen-Names-Commerce-Media-Heavyweight-Adam-Skinner-as-CEO-to-Scale-Modern-OOH Want to see what modern, accountable OOH looks like for your brand? Drop OneScreen AI, Inc. a line at onescreen.ai.

OneScreen.ai
May 9th, 2025
What We Learned at the OAAA 2025 Conference: Measurement, Modernization, and the Power of OOH

This week, the OneScreen.ai team attended the OAAA 2025 Conference in Boston - an event that brings together leaders across the out-of-home (OOH) advertising industry to discuss where the industry is heading and what it will take to keep brands both competitive and compelling in today's media landscape.

FinSMEs
Jun 6th, 2024
OneScreen.ai Raises $4.7M in Funding

OneScreen.ai, a Boston-based platform for matching ad placements with customer demographics and historical data, raised $4.7M in funding. Investors include Asymmetric Capital Partners, Techstars, and Impellent Ventures. The funds will be used to expand operations and development efforts. Led by CEO Alex Ewing, OneScreen.ai connects startups with OOH advertising opportunities and uses anonymized location data to track campaign success.