דרושים בתחום Big Data

As a Data Scientist on the core data science team, you will be a valuable member of an innovative and technical data science team working on various problems.
What You'll Be Doing
Design algorithms to challenging problems
Build decision making models to optimize the performance and coverage of our ensemble of classifiers
Work with Riskified’s Analytics team to model fraud detection inference and prediction
Collaborate with various teams within Riskified to enhance processes and expedite model development life-cycles
Mentor the Analytics team on research tasks
Develop models and visualizations to help identify fraud ring attacks
Monitor classifier and model performance using visualization

Qualifications
At least 2 years experience as a Data Scientist in the industry
MSc/PhD in exact sciences
Ability to write clean and concise code, ideally in R or Python
Creative thinker with a proven ability to innovate through data exploration and application of non-trivial solutions
Solid understanding of statistics and applied mathematics
Experienced with data science best-practices
Dedication and persistence when it comes to monitoring and improving performance after deployment
Good communication skills, ability to clearly explain complex concepts

n this role, you’ll be part of a vibrant team of Data Scientists and Machine Learning engineers.
You’ll be expected to help architect, code, optimize, and deploy Machine Learning models at scale using the latest industry tools and techniques.
You’ll also help automate, deliver, monitor, and improve Machine Learning solutions. Important skills include software development, systems engineering, data wrangling, feature engineering, architecting, and testing

BS, MS, or PhD degree in Computer Science or related field, or equivalent practical experience.
Strong knowledge of
Computer science fundamentals: data structures, algorithms, performance complexity, and implications of computer architecture on software performance (e.g., I/O and memory tuning).
Software engineering fundamentals: version control systems (i.e. Git, Github) and workflows, and ability to write production-ready code.
Knowledge of
Machine Learning/Data Science languages, tools, and frameworks (e.g., Scala, Spark, Python, R, SQL, SkLearn, NLTK, Numpy, Pandas, TensorFlow, Keras, Java).
Machine learning techniques (e.g., classification, regression, and clustering) and principles (e.g., training, validation, and testing).
Data query and data processing tools/systems (e.g., relational, NoSQL, stream processing).
Distributed computing systems and related technologies (e.g., Spark, Hive).
Mathematics fundamentals: linear algebra, calculus, probability

Preferred Additional Qualifications:
Familiar with
Cloud technologies, in particular AWS.
DevOps concepts (e.g., CICD).
Software container technology (e.g., Docker)
Experience with designing and developing deep learning architectures.
Deploying highly scalable software for SaaS products.

A young & fast-growing gaming startup, based in Tel Aviv, is looking for am enthusiastic Backend Developer to join its core team. This is a great opportunity to help lead the company's product to the next level.

• 3+ years of experience as a backend developer.
• Proficient in Node.js.
• Experience in building great scalable cloud applications.
• Excited to learn new technologies.
• Has a deep understanding of client-server communication.

A successful startup developing mobile games for millions of users worldwide, backed by well-known investors, is seeking Big Data developer. The offices are in Tel Aviv.
Job Responsibilities:
* Develop and deploy batch and real time data processing infrastructures and pipelines.
* Ingesting streams of user data from over 2 million daily active users.
* Pulling data from various marketing channels and related sources.
* Integrate ML models in data pipeline.
* Batch and Streaming ETL processes.

* 2+ years of experience with Python/Java/Scala.
* 2+ years of experience with Big Data development.
* Experience in design and development of scalable big data solutions, using technologies, such as: Kafka, Google BigQuery, Google BigTable, Apache Beam, Spark, ElasticSearch and Apache Airflow.
* Working knowledge of Cloud Environments and Big Data stack and tools.

A world-leader & award-winning company in the field of online advertising is looking to hire a Data Operations Engineer to help maintain the company's SLAs for data landing. The offices are Tel Aviv.

The chosen candidate will improve reliability, scalability, and efficiency of data pipelines by engineering solutions to monitor, alert and auto-remediate issues.

* Proven experience with Linux administration, familiarity with scripting (shell/Python/Ruby) and common command-line utilities..
* Experience with Amazon Web Services.
* Experience with NoSQL (such as Redis, Mongo).
* Experience with RDBMS administration (such as MySQL, Oracle).
* Experience in Big Data and pipeline technologies such as Hadoop / Spark / Kafka / Hive Etc.
* Experience with Vertica.
* Familiarity with log shipping, monitoring - an advantage.
* Experience with Ansible or other configuration management tools.

A great startup developing mobile games for millions of users worldwide, backed by well-known investors, is seeking a talented and experienced DevOps lead. The offices are in Tel Aviv.

Job Responsibilities:
* Responsible for DevOps, Cloud and Monitoring environments - Build infrastructure, tools and services to improve delivery and availability.
* Be part of product architectural and infrastructure design - Design and leverage the backend infrastructure and its security aspects.
* Responsible (together with the team members) for the company's platform, up-time, infrastructure, scale and costs.
* Work alongside Architects, Developers, System administrators and other tech leads in the company.

* 4+ years of experience with Bash/Python and Scripting fundamentals.
* In-depth knowledge of build/release systems, CI/CD systems, Jenkins, GIT.
* Experience with cloud architectures such as AWS or GCP.
* 2+ years of experience administrating Linux based systems.
* Experience with configuration management tools (Ansible/Puppet/Chef).
* Understanding of monitoring tools such as SignalFX, Datadog, Nagios and other monitoring technologies.
* Innovative and ability to quickly learn new and existing technologies.
* Experience with containerized environments and micro-services (i.e. Docker, AWS ECS or Kubernetes).
* Experience with Redis, AWS ElasticCache or any other key value DBs.

A financially-stable cyber security startup, based in Tel Aviv, is looking for a Java Developer to join its super talented team of developers.

* 4+ years of experience in application development using Java.
* Experience working with different application servers.
* Familiarity with graph data base - an advantage.
* 1+ years of experience with Java8 - an advantage.
* Knowledge in Cloud computing - an advantage.
* Knowledge in Big data - an advantage.
* Fast learner.
* Team player.
* Great inter-personal communication skills.
* Great English communication skills, both written and verbal.

● Basic knowledge of databases(Postgres, Cassandra, Elasticsearch). Experience with the design, development, and maintenance of data collections used for data storage and analysis in a biomedical research environment.
3+ Years professional experience in software development
● Demonstrated experience with scripting in Python
● Engineering skills and instincts that are language and platform invariant, but specific experience with Python
● Deep Linux-based systems programming experience with an emphasis on performance and scalability with large data sets.
● Fundamental knowledge of data structures, algorithms and problem solving
● Pipeline, Pandas, Docker, CI Tools, Luigi