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Senior Data Scientist (m/f/d)
Отличная вакансия для опытных специалистов: работа с Founders, бюджет на обучение ($1000) и обустройство дома ($500), а также возможность релокации в Берлин. Высокий уровень технологического стека и реальный масштаб Big Data делают роль очень привлекательной.
Сложность вакансии
Высокая сложность обусловлена требованием обязательного опыта в Ad-Tech и навыков работы с огромными объемами данных (терабайты, миллиарды запросов). Необходимо владение стеком Big Data (Spark, Hadoop) и умение доводить модели до продакшена.
Анализ зарплаты
Зарплата в объявлении не указана, но для позиции Senior Data Scientist в европейском Ad-Tech стартапе с удаленным форматом работы рыночный диапазон составляет €75,000 – €100,000 в год. Kayzen — зрелая компания, поэтому можно ожидать предложения по верхней границе рынка, дополненного бонусами на обучение.
Сопроводительное письмо
I am writing to express my strong interest in the Senior Data Scientist position at Kayzen. With extensive experience in developing production-ready machine learning models and a deep background in the Ad-Tech industry, I am excited about the opportunity to contribute to a platform that processes over 160 billion daily ad requests. My expertise in Python, Spark, and Airflow, combined with a focus on building scalable algorithms for large-scale datasets, aligns perfectly with your team's mission to disrupt the programmatic advertising space.
Throughout my career, I have prioritized impact-driven solutions and clean, reproducible code. I have a proven track record of enhancing models through feature engineering and A/B testing, and I am particularly interested in Kayzen's commitment to transparency and control in advertising. I am eager to bring my skills in neural networks and large-scale optimization to your globally distributed team and help drive tangible business outcomes for your clients.
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Описание вакансии
Senior Data Scientist (m/f/d)Europe, Remote_______________________________________________
Hello👋I am Puneet, Co-founder and CPO at Kayzen, and I am now looking for a Senior Data Scientist to join our team 🙌
But wait, you have not heard of Kayzen before?😃
Kayzen is a mobile demand-side platform (DSP) dedicated to democratizing programmatic advertising. We enable leading apps, agencies, media buyers, and brands to run programmatic customer acquisition, retargeting, and brand performance campaigns through its self-serve and managed service options. Built on the three core pillars of performance, transparency, and control, Kayzen powers the world’s best mobile marketing teams with bespoke solutions that fuel business growth and deliver a competitive advantage. With an unprecedented scale of 160B+ daily ad requests from 1.6B+ unique users worldwide, we serve up to 1B+ ads per day in 180 countries. Kayzen is accessible through our APIs and user interface.
The Team
You will work with a carefully selected, diverse and globally distributed Data Science team (like Heiko, Chen) on various machine-learning models that process terabytes of data, serving billions of ad requests and users around the globe in real-time. We are highly motivated and aligned in our quest to disrupt the multi-billion dollar ad-tech industry. We would like you to be part of our journey, as our Senior Data Scientist (m/f/d).
Responsibilities
Our day-to-day work in Data Science and Machine Learning encompasses a wide range of activities, including:
- Enhancing Models: Continuously improving existing models by incorporating new features, fine-tuning parameters, and utilizing additional data.
- Algorithm Development: Collaborating with our Machine Learning Engineering team to develop and deploy scalable supervised and unsupervised learning algorithms.
- Data Exploration: Identifying and exploring new data sources while researching innovative ways to leverage both new and existing data effectively.
- Solution Research: Investigating new Machine Learning solutions to optimize every step of our value chain.
- A/B Testing: Regularly conducting and evaluating A/B tests to drive insights and refine our strategies.
You’ll be a great fit if you resonate with the following principles of Data Science and Machine Learning:
- Simplicity First: We prioritize finding the best solutions to challenges rather than forcing problems to fit predetermined solutions.
- Impact-Driven: We leverage Machine Learning to enhance our product and drive performance for our clients, always focusing on tangible business outcomes.
- Collaborative Spirit: Our teams consist of analysts, engineers, and data scientists, making strong communication skills essential for success.
- Embrace Experimentation: We believe in the power of experimentation to innovate and refine our approach continually.
Requirements
- Extensive experience in developing data science products, from initial research through to production deployment.
- Strong coding skills with a focus on clean, reproducible, and well-tested code.
- Proficient in key tools and technologies including Python, Spark, Hadoop, Airflow, Docker, and SQL.
- Hands-on experience with algorithms for handling sparse and large datasets, including applications in prediction, clustering, and outlier detection.
- Experience in building neural network-based products for tasks such as classification, regression, and multi-task learning is highly valuable.
- Bonus skills: Knowledge of reinforcement learning and large-scale optimization problems is a significant asset.
- Good understanding of dashboards and SQL for developing and enhancing monitoring tools.
- Previous experience in Ad-Tech is a must.
What do we offer?
- Directly working with Founders and an opportunity to drive direct impact
- Exceptional career growth and learning opportunity
- A unique opportunity to be part of an experienced team of industry experts and entrepreneurs who bring massive change to the Adtech market
- A fun, driven, and multinational team located across Germany, India, Argentina, Canada, Spain, the UK and many more countries.
- A flexible work-from-home arrangement
- Opportunity to relocate to our office in Berlin
- A 500-dollar home-office setup budget
- A 1000-dollar annual learning and development budget
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Навыки
- Python
- Spark
- Hadoop
- Airflow
- Docker
- SQL
- Machine Learning
- Neural Networks
- A/B Testing
- Reinforcement Learning
- Big Data
Возможные вопросы на собеседовании
Учитывая специфику Kayzen, важно понимать, как кандидат справляется с задержками при обработке миллиардов запросов.
Как бы вы оптимизировали ML-модель для работы в режиме реального времени с жесткими ограничениями по времени отклика (low latency)?
В Ad-Tech данные часто разрежены. Этот вопрос проверяет техническую экспертизу в профильной области.
Какие методы вы используете для работы с очень разреженными (sparse) данными при прогнозировании CTR?
Вакансия требует навыков работы с Big Data стеком.
Расскажите о вашем опыте масштабирования моделей с использованием Spark. С какими узкими местами вы сталкивались?
Компания ценит культуру экспериментов.
Опишите случай, когда результаты A/B теста противоречили вашим ожиданиям. Как вы интерпретировали данные и какие действия предприняли?
Ad-Tech — обязательное требование. Вопрос проверяет понимание бизнес-логики индустрии.
Как, по вашему мнению, изменения в политике конфиденциальности (например, отказ от cookies или IDFA) влияют на точность моделей таргетинга, и как это можно нивелировать?
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1000+ офферов получено
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