Senior Machine Learning Engineer (AdTech)

Roku • Sales & Marketing • Bachelor's Degree • Python • Java • 4 days ago
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Salary
≈ $135k – $249k per year (Estimated)
Location
Hybrid (Cambridge, United Kingdom)
Seniority
Senior · 6+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 11, 2026. First seen by Alion on Jun 11, 2026. Roku scores A on the Alion truth index.

Overview
Company
Impact
Profile match

Roku

Roku is an American streaming platform company headquartered in San Jose, California, that makes the Roku operating system, streaming players and Roku-branded TVs and sells advertising across its free and paid channels. Founded in 2002 and listed on Nasdaq, it licenses its software to TV manufacturers, runs The Roku Channel and has engineering and business offices in Austin, Boston, New York, Santa Monica, Cambridge, Manchester and London. Its openings focus on software, machine learning and data engineering, data science, ad technology and search, alongside account executives, finance analysts and legal counsel.
roku.com • HQ: San Jose, United States • Televisions • Streaming & OTT Platforms • 501-1000 employees • Est. 2002
Tech stack of Roku
Backed by Menlo Ventures

Join our mission to build cutting-edge advertising technology that empowers businesses to run sustainable and highly-profitable campaigns. As a Senior Machine Learning Engineer, you will be part of the Ad Performance team, responsible for improving the ad experience through server technologies, data, and cloud services. You will apply your knowledge of experimental methodologies, statistics, optimization, probability theory, and machine learning to solve complex problems and deliver impactful solutions.

Missions

  • Contribuer à la construction d'une plateforme de machine learning de premier ordre, gérant l'ensemble du cycle de vie des modèles.
  • Appliquer votre expertise pour identifier et générer des caractéristiques pouvant être exploitées par plusieurs cas d'utilisation et modèles.
  • Utiliser des techniques d'apprentissage automatique et de modélisation statistique pour développer et évaluer des algorithmes visant à améliorer les performances du produit.

Profil recherché

- We're looking for seasoned engineers with a background in machine learning to aid in this mission

- Familiarity with real-time evaluation of models with low latency constraints

- Great coding skills and strong software development experience (we use Spark, Python, Java)

- Ad tech background is a plus

- Familiarity with distributed ML frameworks such as Spark-MLlib, TensorFlow, etc

- Demonstrated depth in applied machine learning on production systems - typically 6+ years in industry, although we value PhD experience as meaningful acceleration

- Ability to work with large scale computing frameworks, data analysis systems, and modelling environments. Examples include Spark, Hive, NoSQL stores such as Aerospike and ScyllaDB

- Bachelors, Masters, or PhD in Computer Science, Statistics, or a related field

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