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Machine Learning Engineer
OpenX
Krakow
Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

OpenX is seeking a Machine Learning Engineer (Data Scientist) to be responsible for designing, executing, and leading critical R&D projects on petabyte-scale datasets. We also seek creative, curious, and tenacious individuals who are capable of employing sophisticated models to solve challenging problems. Where standard linear and logistic regression is expected for rapid prototyping, we further expect solutions to make full use of skills and expertise in cutting-edge applications of Neural Networks, bagged & boosted decision trees, as well as highly customized optimization algorithms. Also of great importance is the ability to interface those models and insights into our ad exchange and related platforms through the use of both off-the-shelf and customized serving and integration platforms.

We're looking for a Machine Learning Engineer who:

Can translate requests from business and product into Data Science/ML problems
Has an established track record of formulating novel functional concepts and taking state-of-the-art advances from the literature and incorporating them into production systems
Works well independently and as part of a team of people with diverse backgrounds

If we described you, let's talk!

What we offer

    • Working with the newest technologies such as Cloud Computing (GCP)
    • Experienced Team (50% of the company are senior developers!)
    • Challenges at work that are difficult to find anywhere else!
    • Solving important problems in a scale
    • Joining a company that is growing and scaling
    • Flexible working hours & remote work option
    • B2B contract

Key responsibilites

    • Rapidly prototype models, including creation, training, and evaluation to drive business objectives by optimizing aspects of OpenX's programmatic ad exchange to maximize value for our buyers and sellers
    • Implement production training and real-time model evaluation architectures in Google Cloud Platform
    • Design and execute experiments to assess model performance
    • Serve as a consultant for analysts across the organization

Required Qualifications

    • Advanced degree in Computer Science, Physics, Mathematics, Operations Research or related technical field with 4+ years of experience
    • Strong Python and SQL (any flavor) skills
    • Expertise with machine learning languages and tools such as Tensorflow or PyTorch
    • Deep knowledge of machine learning, particularly with Tensorflow, TFX, and Kubeflow

Desired Characteristics

    • Experience with cloud platforms, and especially their machine learning functionalities
    • Experience reporting findings to a broad audience
    • Experience providing mentorship and guidance to more junior employees
    • Familiarity with Java or Golang
OpenX VALUES
Our five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.

WE ARE ONE
We are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture

WE ARE CUSTOMER CENTRIC
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

OPENX IS OURS
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

WE ARE AN OPEN BOOK
We understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally. 

WE EVOLVE FAST
We take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.

OpenX is committed to equal employment opportunities.
It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.

OpenX Applicant Privacy Policy
Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.

Effective Date: March 1, 2022
Contract
Senior
Logo
Senior Data Scientist
OpenX
New York, NY
Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

OpenX Technologies, Inc. is looking for a Data Scientist or Machine Learning Engineer to join our team in the Data Science Org.
Our exchange processes hundreds of billions of ad requests daily, resulting in petabytes of new data daily. This data volume demands cutting-edge applications of sophisticated models, deep learning, and novel platforms to function efficiently and provide the best value for our customers. We’re looking for data scientists who are experienced with systems that blend deep learning, optimization, and statistical insights to achieve the best possible business outcomes and provide nuanced control over complex processes. The ideal candidate has a creative mind which they put to use by constructing models tailored for prediction with high dimensionality data sets — we are looking for those who can translate requests from business and product into Data Science / ML problems. They should also be capable of leading and executing on those projects with state-of-the-art advances from the literature while incorporating them into production systems.

The role, while remote, is schedule-centered in the US Eastern timezone.

If you’re:
Proactive - always seeking a satisfying solution to unexplored questions
Persistent - exhibit the skills and attitude to lead a project to success as well as how to extract yourself from common pitfalls
Creative - researching and developing a solution to challenging problems with large datasets
We want to talk to you.

Key Responsibilities

    • Extract data from terabyte-scale datasets and transform it to compact representations which are amenable to use by a wide variety of models
    • Developing and managing ML pipelines to predict and model key components and phenomena in our ad exchange, leveraging these to answer questions and improve performance
    • Tune existing models and their products to enhance functionality and drive new developmental features
    • Guiding and developing DS / ML projects from inception to production-level deployment while reporting to stakeholders on progress and challenges
    • Coordinate with other members of the team to deploy, manage, and synchronize the function of all ML models in production and development

Required Qualifications & Skills

    • Ph.D. in Computer Science, Physics, Mathematics, Operations Research or related technical field with 4+ years of relevant experience, or MS with 7+ years of relevant experience
    • Fluency in SQL and programming experience in Python
    • Extensive experience with deep learning and other ML techniques beyond common regression, particularly in the context of tensorflow and its related applications / environment
    • Strong track record of nurturing DS / ML projects to maturity with maximal business impact as well as supporting and improving those projects beyond deployment
    • Mastery of probability and statistics, especially techniques that scale to massive datasets
    • Strong communication and presentation skills — proficient in analysis and summarization of the key points of a data set or experiment result

Desired Qualifications & Skills

    • Experience working with a cloud platform like GCP / AWS / Azure, with emphasis on GCP and the Tensorflow / TFX platform
    • Familiarity with other programming languages such as Java and golang
    • Experience providing mentorship and guidance to more junior employees
$143,000 - $180,000 a year
Pursuant to the San Francisco Fair Chance Ordinance, Los Angeles Fair Chance Initiative for Hiring Ordinance, New York Fair Chance Act, and any other state or local hiring regulations, we will consider for employment any qualified applicant, including those with arrest and conviction records, in a manner consistent with the applicable regulation. 

OpenX is committed to fair and equitable compensation practices. For applicants in New York, New Jersey, California, and Colorado, the salary range is $143,000 - $180,000 per year + bonus + equity + benefits. A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  The salary range may differ in other states.

A summary of our benefits, which include medical, dental, vision, 401k, equity and more, can be viewed here: https://www.openx.com/company/careers/ A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  
OpenX VALUES
Our five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.

WE ARE ONE
We are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture

WE ARE CUSTOMER CENTRIC
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

OPENX IS OURS
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

WE ARE AN OPEN BOOK
We understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally. 

WE EVOLVE FAST
We take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.

OpenX is committed to equal employment opportunities.
It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.

OpenX Applicant Privacy Policy
Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.

Effective Date: March 1, 2022
Full-time
Senior
Logo
Software Engineer - Data Science
OpenX
New York, NY
Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

OpenX is looking for talented and highly motivated software engineers to help us innovate and improve our products. You will work closely with the OpenX Data Science team to find areas where machine learning and other techniques can be applied to directly improve profitability and efficiency. You will work with huge data sets, design experiments, and write the code to implement optimizations based on the results.

Key Responsibilities

    • Develop high-performance, low-latency backend components.
    • Work with analysts and scientists to design, implement, and analyze experiments aimed at increasing yield for publishers and improving efficiency for our advertising partners.
    • Architect, implement and deliver new features and functionality.
    • Work with Engineering and Product teams distributed across multiple locations to drive requirements, and own the projects end-to-end.

Requirements

    • 2-3 years of engineering experience with backend languages like Java, Golang, or Erlang
    • Excellent communication in written and spoken English
    • Experience writing SQL queries
    • Experience with GCP, Docker, Kubernetes, and Cloudbuild
    • Excellent communication in written and spoken English
    • B.S./M.S. in Computer Science or an equivalent discipline
$115,000 - $135,000 a year
Pursuant to the San Francisco Fair Chance Ordinance, Los Angeles Fair Chance Initiative for Hiring Ordinance, New York Fair Chance Act, and any other state or local hiring regulations, we will consider for employment any qualified applicant, including those with arrest and conviction records, in a manner consistent with the applicable regulation. 

OpenX is committed to fair and equitable compensation practices. For applicants in New York, New Jersey, California, and Colorado, the salary range is $115,00 - $135,000 per year + bonus + equity + benefits. A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  The salary range may differ in other states.

A summary of our benefits, which include medical, dental, vision, 401k, equity and more, can be viewed here: https://www.openx.com/company/careers/ A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  
OpenX VALUES
Our five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.

WE ARE ONE
We are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture

WE ARE CUSTOMER CENTRIC
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

OPENX IS OURS
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

WE ARE AN OPEN BOOK
We understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally. 

WE EVOLVE FAST
We take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.

OpenX is committed to equal employment opportunities.
It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.

OpenX Applicant Privacy Policy
Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.

Effective Date: March 1, 2022
Full-time
Mid Level
Logo
Principal Data Scientist
OpenX
US - Remote
Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

Who we are looking for
OpenX Technologies, Inc. is looking for a Data Scientist to join our team in the Data Science Org. Our exchange processes hundreds of billions of ad requests daily, resulting in petabytes of new data daily. This data volume demands cutting-edge applications of sophisticated machine learning models and novel platforms to function efficiently and provide the best value for our customers. We’re looking for data scientists who are experienced in the ad tech programmatic ecosystem, in particular, building advertiser-facing products. The ideal candidate has a creative mind which they put to use by constructing models tailored for prediction with high dimensionality data sets — we are looking for those who can translate requests from business and product into Data Science / ML problems. They should also be capable of leading and executing on those projects with state-of-the-art advances from the literature while incorporating them into production systems.

The role, while remote, is schedule-centered in the US Eastern time zone.

If you’re:
Proactive - always seeking a satisfying solution to unexplored questions
Persistent - exhibit the skills and attitude to lead a project to success as well as how to extract yourself from common pitfalls
Creative - researching and developing a solution to challenging problems with large datasets
We want to talk with you. 
     
Key Responsibilities:
-Extract data from terabyte-scale datasets and transform it into compact representations suitable for various models.
-Develop and manage ML pipelines to build user audiences that drive outcomes for advertisers.
-Tune existing models and products to enhance functionality and introduce new features.
-Guide and develop DS/ML projects from inception to production-level deployment while reporting progress and challenges to stakeholders.
-Coordinate with other team members to deploy, manage, and synchronize the function of all ML models in production and development.

Required Qualifications:
-Ph.D. in Computer Science, Physics, Mathematics, Operations Research, or a related technical field with 5+ years of relevant experience, or an MS with 8+ years of relevant experience.
-Fluency in SQL and programming experience in Python.
-Extensive experience with ML techniques beyond common regression, particularly in the context of TensorFlow and its related applications/environment.
-A strong track record of nurturing DS/ML projects to maturity with maximal business impact and supporting and improving those projects beyond deployment.
-Mastery of probability and statistics, especially techniques that scale to massive datasets.
-Strong communication and presentation skills, proficient in analyzing and summarizing key points from a dataset or experiment result.

Preferred Qualifications:
-Experience working with a cloud platform like GCP/AWS/Azure, with an emphasis on GCP and the TensorFlow/TFX platform.
-Familiarity with other programming languages such as Java and Golang.
-Experience providing mentorship and guidance to more junior employees.
$190,000 - $220,000 a year
Pursuant to the San Francisco Fair Chance Ordinance, Los Angeles Fair Chance Initiative for Hiring Ordinance, New York Fair Chance Act, and any other state or local hiring regulations, we will consider for employment any qualified applicant, including those with arrest and conviction records, in a manner consistent with the applicable regulation. 

OpenX is committed to fair and equitable compensation practices. For applicants in New York, New Jersey, California, and Colorado, the salary range is $190,000 - $220,000 per year + bonus + equity + benefits. A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  The salary range may differ in other states.

A summary of our benefits, which include medical, dental, vision, 401k, equity and more, can be viewed here: https://www.openx.com/company/careers/ A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  
OpenX VALUES
Our five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.

WE ARE ONE
We are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture

WE ARE CUSTOMER CENTRIC
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

OPENX IS OURS
We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

WE ARE AN OPEN BOOK
We understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally. 

WE EVOLVE FAST
We take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.

OpenX is committed to equal employment opportunities.
It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.

OpenX Applicant Privacy Policy
Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.

Effective Date: March 1, 2022
Full-time
Senior