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Required Senior GenAI Machine Learning Engineer/Scientist
Realize your potential by joining the leading performance-driven advertising company!
As a Senior GenAI Machine Learning Engineer / Scientist, youll play a vital role in turning algorithm prototypes into shippable products that will have a significant and immediate impact on the companys revenue.
How youll make an impact:
As a Senior GenAI Machine Learning Engineer, youll bring value by:
Be responsible for the entire algorithmic lifecycle in the company: data analytics, prototyping of new ideas, implementing algorithms models in a production environment and then monitoring and maintaining them.
Turn algorithm prototypes into shippable products that will have a significant and immediate impact on the companys revenue.
Work on a daily basis with some of the hottest trends in todays job market: LLMs, big data analytics/engineering and cloud computing.
Apply your scientific knowledge and creativity to analyze large volumes of diverse data and develop algorithmic solutions and models to solve complex problems
Influence directly on the way billions of people discover the internet.
Work on projects such as DeeperDive, LLM Personalization, Feed Personalization, Personalized Image and text generation and much more
Our tech stack:
Python, Java, Langfuse, TensorFlow, Spark, Kafka, Cassandra, HDFS, ElasticSearch, AirFlow, BigQuery, Google Cloud Platform, Kubernetes and Docker.

Required Senior iOS Engineer
Realize your potential by joining the leading performance-driven advertising company!
As a Senior iOS Engineer in the Supply group at our Tel-Aviv office, youll play a vital role in developing an SDK that is implemented on over 2,000 applications and used by hundreds of millions of users every day
How youll make an impact:
As an iOS Engineer, youll bring value by
Facilitate our content through Mobile platforms.
Build core services for the companys mobile needs.
Scale with millions of users.
Take part in and develop highly scalable, highly performant solutions, which serve billions of recommendations per day.
Work closely with Product to connect the technical and the business sides.
Influence directly on the way billions of people discover the internet.
Work on projects such as: Editorial Level Personalization, 3rd Party Demand, Content Feed, Video Recommendations, Breaking news notifications and much more.

Were looking for a technical Product Manager with cybersecurity experience, specifically in Endpoint Detection and Response (EDR). You should understand endpoint security and security admin workflows.

The ideal candidate combines business acumen with system-level thinking, and has the drive and accountability to lead our EDR product to the next level.

Youll have a track record of defining product features for complex, scalable systems, balancing customer needs, technical constraints, and business goals. Your roadmap will reflect clear priorities, drive growth, and deliver lasting differentiation.

What will you do?
Be part of one of our most exciting and strategic team.
Deepen your understanding of how our endpoint and big data platforms operate, and shape end-to-end capabilities that deliver market differentiation.
Own the product lifecycle: write PRFAQs and roadmap decks, define EPICs and user stories, and prioritize features and enhancements.
Collaborate closely with cross-functional teamsConsole, Agents, Detection, Research, UX/UI,, QA, and field services (e.g., MDR, Support)to ensure successful releases and exceptional customer outcomes.
Join a high-performing product team with a big impact.
Engage directly with customers and prospects to uncover needs, pain points, and opportunitiesthen turn those into actionable solutions.

The Detection Team is looking for a Senior Data Scientist to join our Static AI team.
The Static AI team develops state-of-the-art ML models that operate on millions of machines across the world, to make sub-second decisions to stop malware before it runs.
The team brings together cross-functional skill sets including data science, ML engineering, and software engineering, to research, develop, ship, and support ML malware detection engines across Windows, Mac, and Linux machines and cloud environments.

What will you do?
Design and deliver innovative ML-based detection engines.
Research new approaches to AI/ML and work with your peers to integrate the most promising advancements in ML into our product.
Build analytics systems that learn from a wide variety of internal and external data sources to improve our existing ML models and create new ones.

We are building our next-generation, cloud-based data pipeline and are looking for a strong backend software engineer. This engineer should be excited about building systems from scratch, love to take an active role, and be able to quickly dive into complex, large-scale environments and lead them.

By joining this team, you will, among other products, help develop the following products:

Network Discovery: A product that delivers full visibility into every device on a corporate network. Customers can manage any asset, including those not yet protected or supported by us, thanks to machine learning that automatically identifies all IoT devices.
Vulnerability Management: A platform module that enables customers to analyze and prioritize the vulnerabilities detected by our cybersecurity solutions on their endpoints.

What will you Do?
Own features end-to-end - Join a cross-disciplinary squad of backend and frontend engineers working alongside Windows, Linux, and macOS endpoint specialists - taking ideas from whiteboard to production.
Build customer-facing security insights - Design, implement, test, and deploy backend services that turn raw cybersecurity events into clear, actionable information.
Shape our platforms architecture - Lead the design of new modules across several strategic product lines, choosing patterns and technologies for scale, reliability, and performance.
See your impact - Your work directly improves how customers understand risk and respond, making it a visible part of key company initiatives.

Were looking for passionate individuals who thrive in collaborative environments and are eager to drive impact. If youre excited about solving complex challenges in bold, innovative ways, wed love to connect with you.

What are we looking for?
Our team is responsible for Endpoint Protection services, and covers end-to-end from agent to backend to frontend the following areas:
Building services that process traffic between our Agent (which is responsible for protection across all kinds of OS - Windows, Linux, macOS) and our cloud-based Management console
Developing a big part of backend of this Management console itself (which is in short a large-scale distributed system, a complex "control application" used by IT security teams of S1 clients - that can be seen in many S1 vs. Ransomware demos) and the management of the "fleet" of agents deployed on endpoints in client's environments (backends written in Python and Go and deployed in Kubernetes)
Were a team with a significant impact on how our customers environments are protected, and how they interact with agents. As a core team at S1, we're heavily involved in every end-to-end effort, features development and are key contributors to the design and build of the right architecture of S1's cybersecurity solution to match the scale & hyper-growth of our business.

What will you do?
Design, develop, and support robust backend system our main product line - Endpoint Protection
Feature Design and Documentation: Take ownership of designing new features and creating documentation.
Database Schema Design: Design efficient database schemas to support new and existing features.
Backend Service Development: Develop and maintain backend services using Go and Python. Create RESTful APIs to facilitate seamless interaction between the backend, front-end, and other systems.
Integration: Integrate with various cloud services (AWS, GCP), databases (Postgres, MongoDB), messaging systems (Kafka), and caching solutions (Redis) to enhance system functionality and performance.
Feature Support and Validation: Provide support during the feature validation cycle, ensuring smooth deployment to production environments.
Performance Optimization: Optimize system performance and scalability to manage demanding workloads effectively.
Requirement Translation: Understand product requirements and translate them into technical solutions.
Cross-Team Collaboration: Work closely with product, validation, and front-end engineering teams to deliver and maintain high-quality features.
Customer Communication: Communicate with customer care and support teams to address issues.
Code Quality and Maintenance: Write clean, maintainable code. Stay up-to-date with the latest advancements in backend technologies and security best practices.
Innovation and Creativity: Bring creativity to the table. Explore new solutions and technologies to improve our product continuously.

we are growing rapidly and we are seeking a Senior Full Stack Developer to join our technology team. This position will be instrumental in developing new products and capabilities on our platform for our clients.
Responsibilities:
Collaborate closely with Product and Design teams to build new features end-to-end.
Coordinate with engineering and product leadership to define projects that help us meet business objectives.
Support existing platforms including: additions to features, upgrade of technology and implementation of new clients requests.
Work with support to investigate and debug technical support requests and client issues.
Work in an Agile environment, at a sustainable pace of one/two-week sprints.
Continuously learn and evaluate new technologies and guide team decision making.
Mentor, pair, and delegate work to encourage the professional and technical growth of peers.

We are looking for a Senior Product Manager.
As a Product Manager, you will lead the product work and execution, be responsible for the entire product lifecycle, from concept to production. You will establish a shared vision for your product across the company at large, while collaborating closely with cross-functional team members from (e.g. design, R&D, product marketing) and receive input from customers, leadership and various departments like customer success, sales and professional services, in order to lead the product from concept to launch. You will own the roadmap-building process for these products, as well as lead product initiatives that will have a great impact on the future direction of the company.
Responsibilities:
Fully own the product management lifecycle for our survey product in line to the companys strategic vision: the roadmap, KPIs, research, user experience, and finally collaborate with R&D on execution and monitor adoption.
Perform research and discovery to understand and prioritize our customers' pain points, and analyze user feedback, product analytics, and market research and competition, to turn user needs into detailed product requirements and user workflows
Build the business case for new product development, involve various stakeholders to get buy-in and communicate the vision to the wider teams.
Product Requirements; translate the new product strategy into detailed requirements and prototypes.
Launch new features (and sometimes products) in collaboration with the sales and marketing teams, helping develop the go-to-market plans.
Work with a variety of stakeholders across engineering, customer success, sales, professional services, marketing and operations.

We are looking for a Applied AI Team Lead.
As the Team Lead for our Applied AI team, you will join our Tel Aviv office. You will guide the day‑to‑day execution of innovative projects to help mayors and other city leaders understand their communities and improve the lives of millions worldwide. Reporting to the VP of Data Science, you will combine hands‑on technical leadership with people management skills, overseeing a team with rapidly-growing portfolio of mission-critical projects and collaborating with product, engineering, and other internal partners. Youll be responsible for leading every aspect of the development process, so that our cutting‑edge AI and data science capabilities get to production quickly, reliably, and with maximum impact.
Day to Day:
Lead a 5‑person team of data scientists and engineers, coordinating stand‑ups, code reviews, and 1‑on‑1s while also contributing hands-on to high-priority projects.
Oversee the development and implementation of a diverse project portfolio, focused on both customer-facing product features and internal business use cases.
Scope, execute, and deliver end‑to‑end AI and data science capabilities to meet the requirements of product owners and internal stakeholders.
Play a leading role in the development of AI-focused infrastructure and the implementation of best practices for engineering and data science.
Track project risks, dependencies, and costs, and make proactive adjustments to keep initiatives on time and aligned with requirements.
Stay current with the latest developments in AI technologies and tools, and identify opportunities to integrate the latest innovations into our products and workflows.
Recruit, onboard, and develop team members to help scale our Applied AI program and promote a culture of technical excellence.
Work an in‑person or hybrid schedule, with at least three days per week in our Tel Aviv office.

We are seeking a highly experienced and motivated Senior WEB Developer to serve as the Frontend Tech Lead for our Defense and Energy Divisions.

This is a hands-on technical leadership role, leading frontend technology direction, architectural design, and development practices across projects.

The role requires direct interaction with customers, high service orientation, and strong expertise in frontend architecture and best practices.

Responsibilities:
Serve as the Technical Lead for frontend activities within the division.
Define, design, and implement frontend architecture for complex systems.
Lead hands-on development efforts in React and associated modern technologies.
Collaborate closely with backend developers, UI/UX designers, project managers, and customers.
Review, guide, and improve code quality, development practices, and technical documentation.
Act as a technical point of contact for customer-facing engagements, workshops, and technical discussions.
Stay up-to-date with the latest trends and best practices in frontend and React development.

We are looking for a Senior Data Scientist (Applied AI).
As a Senior Data Scientist on our Applied AI team, you will join our Tel Aviv office and play a hands-on, end-to-end role in delivering innovative capabilities that help mayors and other city leaders understand their communities and improve the lives of millions worldwide. Reporting to the Applied AI Team Lead, you will collaborate with product, engineering, and fellow data-science teammates to turn cutting-edge research into production-ready solutionsquickly, reliably, and with maximum real-world impact. Youll work with a rich mix of data sources (including social media, news stories, survey results, resident feedback, and more) to create models and AI-powered features that scale.
Day to Day:
Design, build, and deploy AI and machine-learning solutions, from data exploration through modeling, evaluation, and integration into customer-facing products and internal tools.
Optimize models for quality and scalability through feature engineering, hyper-parameter tuning, runtime profiling, and thoughtful architectural choices.
Build and maintain data pipelines using tools such as Airflow, Spark, and Databricks to ensure clean, reliable inputs for downstream models.
Collaborate closely with product managers, engineers, and designers to refine problem statements, iterate rapidly, and ship impactful features on schedule.
Champion technical excellence by conducting code reviews, sharing best practices, and mentoring teammates across data science and engineering.
Stay current with the latest developments in AI-including LLMs, RAG systems, and AI agents-and proactively propose ways to incorporate new techniques into our workflows.
Work an in-person or hybrid schedule, spending at least three days per week in our Tel Aviv office.

We are looking for a brilliant hands-on Software Development Team Leader to join our top-notch front-end infrastructure team. As a Team Leader, you will have the autonomy and the authority to lead a Platform team that builds amazing tools in an agile development lifecycle. Your focus will be on building and improving micro front-end using SSR and monorepo infrastructure. Beyond that your team will be in charge of optimizing our development processes and build system.

Our technology stack includes - React, NodeJS, Typescript, Webpack, Nx, AWS, Kafka, Mongo, and Redis.

What am I going to do?
Lead a team of developers through the development lifecycle - architecture, design, development, quality, and production.
Hands-on development of platform tools (~50% of the time).
Work closely with other participants in the team - product, design, and Data.
Grow and coach the team's talent.
Lead and managed design system

We are looking for an experienced Data Scientist who can leverage and develop innovative machine learning, NLP, and generative AI technologies, for solving problems within a wide scope.

As a part of our Data Science group, you will work on highly complicated challenges, from research to production, and help shape our algorithms and AI platform. You will work with Developers, Analysts, Product Managers, and business owners on growth opportunities and new ideas.

You should have a strong background and experience in the machine learning pipeline through business understanding, research, data exploration, feature engineering, model building, performance evaluation, testing, production-level code and deployment, model monitoring, and maintenance.

What am I going to do?
Take leading roles in projects such as search engine ranking, promoted ads in search results, recommendations, users segmentation and personalization, online bidding optimization, text analysis, real-time predictions, live streaming data handling, exploration-exploitation problems, etc.
Work closely with various departments in the company to provide advanced Data Science solutions end to end.
Write and own production models and code.
Independent research and innovation in new content and technological domains.
Lead and advise other team members.
Continuously produce new initiatives and improvement ideas.
Act as a leader of AI platform. Develop models and framework solutions for the group.

We are looking for an experienced Data Scientist who can leverage and develop innovative machine learning, NLP, and generative AI technologies, for solving problems within a wide scope.

As a part of our ML Foundations team, you will work on highly complicated challenges, from research to production, and help shape our algorithms and AI capabilities. You will work with Data scientists, Software engineers, Product Managers, and business owners on growth opportunities and new ideas.

You should have a strong background and experience in the machine learning pipeline through business understanding, research, data exploration, feature engineering, model building, performance evaluation, testing, production-level code and deployment, model monitoring, and maintenance.

What am I going to do?
Take leading roles in innovative and cross-domains projects using cutting-edge technologies
Research and development of foundation data science capabilities
Work closely with various departments in the company to provide advanced Data Science solutions end to end.
Write and own tools and frameworks that will integrate in production models.
Build frameworks to train, evaluate, deploy and monitor machine learning models using reliable and scalable infrastructure.
Create modular, reusable code libraries and tools to streamline model development, evaluation, and testing processes.
Independent research and innovation in new content and technological domains.
Lead and advise other team members.
Continuously produce new initiatives and improvement ideas.

Were looking for a Senior Product Manager to lead the strategy, vision, and execution of our product for Generative AI applications. In this role, youll define and build the next generation of AI security controlsenabling enterprises to use GenAI safely, responsibly, and at scale.