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We are looking for a talented Controller to join our Finance team. This role includes managing accounting, taxation and payroll across several subsidiaries, overseeing regulatory and financial reporting and assistance in preparing budgets and forecasts.
As a Controller you will be reporting to the CFO and be part of a team that is responsible for the finance, accounting, and reporting activities for the company.
This is a full-time, Israel-based, 9-Month Temporary Position, with the possibility of extension.
Responsibilities:
Responsibility for all day-to-day financial activities of Upstreams subsidiaries.
Responsible for the payroll process in several subsidiaries
Responsibility for the monthly and annual closing process of Upstreams subsidiaries in accordance with US GAAP.
Oversee and review all bookkeeping activities to ensure accurate and compliant financial records.
Assist with various ad-hoc financial tasks and projects.
Collaborate with external auditors, tax advisors, and cross-functional teams.

We are looking for a Senior AI Modeling Architect to define and model the architecture of our next-generation AI processors. In this role, you will serve as a key technical authority - bringing not only strong modeling capabilities, but also the architectural vision to propose and drive end-to-end solutions to complex design challenges.
You will work at high levels of abstraction, partnering closely with HW and SW architects to co-invent optimal solutions, validate them through simulation, and influence design decisions based on experimental data.

Responsibilities
Model CPU/AI processor functionality and performance using SystemC and pre-silicon simulation environments.
Define and drive architectural solutions - not only identify problems, but come with concrete proposals and alternatives.
Partner with lead HW and SW architects to co-design features and evaluate trade-offs across the stack.
Analyze bottlenecks and performance on workloads reflecting future AI use cases.
Provide proof-of-concept implementations for new architectural features and design alternatives.
Potentially lead feature definition in addition to the modeling role.

We're looking for a builder to design and own the technical backbone of our go-to-market engine. By combining AI, automation, data, and modern business systems, you'll build the infrastructure that enables our commercial teams to scale faster.
This isn't a role focused on maintaining existing tools or pulling reports. You'll create new workflows, integrations, AI-powered automations, and internal products that have a direct impact on revenue and the way our business operates.
Working across Operations, Sales, Marketing, Customer Success, Product, and Engineering, you'll solve complex business problems through technology and build the systems that power Lema's next stage of growth.
What you'll do:
Own and evolve our GTM technology stack
Build AI workflows, automations, and internal tools
Design integrations across HubSpot, product data, and third-party platforms
Build the infrastructure that helps our commercial teams move faster and operate more efficiently
Manage and optimize CRM and revenue systems
Build dashboards, reporting, and revenue insights
Partner with Sales, Marketing, Customer Success, Product, and Engineering to eliminate operational bottlenecks and scale our GTM motion

we are looking for a Software Development Team Leader Production Engineering.
As a Software Development Team Leader Youll lead a team of strong engineers building the core platform behind one of the largest real-time recommendation systems in the world, with full ownership from design to production and the freedom to move fast and solve complex infrastructure challenges.1.4 billion users. 950,000 requests per second. 140TB of fresh data every day. 800M metrics every minute (for monitoring). Thats the scale Taboolas Production Engineering team operates at - and were looking for a Software Development Team Leader to help drive what comes next.

we are looking for a highly motivated student to join our Data Analytics team. This role includes exploring and extracting insights from millions of connected vehicles on the road. As a Data Analyst, you'll develop the next generation of cybersecurity and mobility data applications for the automotive industry.
This role is part-time and is Israel based.
Responsibilities:
Leading the data onboarding process of new customers.
Explore raw data of various customers as preparation for parsing and normalization in order to turn data into actionable insights and make data-driven decisions.
Use big data tools and AI to analyze large scale real-time data of connected vehicles and identify anomalies and emerging threats to create meaningful detectors that bring value to our customers.
Representing the data function both internally and externally, including customer-facing interactions.

we are looking for a Talent Acquisition Business Partner (Maternity Leave Cover).
As a Talent Acquisition Business Partner on the Talent Acquisition team in our Tel Aviv Office, youll play a vital role in hiring for top Tech positions that drives technology and business success while building trusted partnerships with hiring managers to shape our future teams.
You will lead end-to-end recruitment processes, directly impact our Tech Org growth, and act as a strategic partner to the business - ensuring we hire exceptional people who advance our mission and culture.

We are seeking a Machine Learning Engineer to join the team that builds the predictive intelligence powering the Hello Heart app. You will own the ML models behind user engagement, cardiovascular risk stratification, and personalized health recommendations - the systems that determine what users see, when they're nudged, and how their health trajectories are shaped.

This role demands both statistical depth and engineering proficiency - you will be expected to take models from research through to deployment, write code built for production, and use AI coding assistants fluently as part of how you get work done.

Responsibilities
Lead end-to-end development of predictive ML models. From data exploration and feature engineering through training, validation, deployment, and ongoing monitoring across engagement and clinical risk domains.
Apply strong statistical foundations to model design, feature selection, uncertainty quantification, and interpretation of results
Write production-grade Python code that is clean, tested, and built for maintainability and scale.
Use AI coding assistants to accelerate development, code review, and documentation without sacrificing quality or rigor.
Partner with product managers, data engineers, and software engineers to translate strategic questions and user behavior patterns into measurable, data-driven solutions.
Research and implement cutting-edge ML techniques spanning supervised and unsupervised learning, causal inference, deep learning, and reinforcement learning to tackle complex healthcare challenges.
Contribute to MLOps infrastructure: model serving, versioning, evaluation pipelines, and monitoring.
Design and interpret A/B tests and other experimental methodologies to measure the impact of models, features, and interventions.

we are looking for a Data Platform Engineering Team Leader
As a Data Platform Engineering Team Leader on the Infrastructure R&D Department in our Tel Aviv office, youll lead the engineering team behind the data platform powering reporting, billing, experimentation, ML training, and revenue optimization.
Youll shape the technical direction of one of our most critical platforms, grow exceptional engineers, and solve complex data infrastructure challenges at massive scale-building systems that are reliable, scalable, and easy to use.

As the Senior Product Manager for this new growth initiative, you'll execute the product strategy -taking a validated concept through market validation and into initial scale. You will define the playbook for how we build, test, launch, and scale new offerings that expand our impact beyond our core platform.

This is a founding PM role for a new product line. You'll work at the intersection of user research, engineering, design, and commercial execution-moving fast, validating assumptions, and building products that deliver measurable clinical and commercial impact in underserved populations.

Responsibilities
Conduct deep user experience research (UXR) and market validation to test strategy assumptions and define product-market fit.
Lead product launch execution and initial go-to-market rollout
Develop and execute growth strategies to drive user acquisition, engagement, and retention throughout the product lifecycle.
Drive product development in partnership with engineering, design, data science, and analytics teams.
Design and test service prototypes in collaboration with clinical, product, and GTM teams, with a focus on speed-to-learning.
Work closely with Sales, Customer Success, and Clinical teams to understand customer needs and commercial viability.
Partner with the commercial team to validate market demand and ensure product-market fit before major investment.
Establish metrics for success and health checks that inform go/no-go decisions at key milestones.

we are looking for a Creative Strategist - Maternity Leave Replacement / Contractor
As a Performance Creative Specialist, you will serve as a strategic partner at the intersection of creative and data. Youll join Taboolas global Creative Shop, working hands-on to translate data into sharp, actionable creative briefs, produce high-performing assets (copy, images, videos, and landing pages), and relentlessly A/B test them to optimize campaigns for our internal User Acquisition team.
Responsibilities:
Briefing & Execution: Translate internal and external data into actionable best practices and clear creative briefs for the studio, video editors, designers, and external vendors.
Asset & Campaign Optimization: Lead the strategy for optimizing campaign assets (copy, images, videos, and landing pages) using A/B testing frameworks to ensure they hit the mark across different platforms.
Knowledge Sharing: Create and deliver educational materials (webinars, internal briefings) for both internal teams and external clients to share creative insights and best practices.
Cross-Team Collaboration: Work closely with performance marketing and in-house media buying teams to monitor and iterate on creative strategy for internal user acquisition efforts.
Performance Analysis: Analyze and communicate the business impact of creative strategy initiatives (e.g., spend uplift, CTR/CVR improvements).
This is a full time job

we are looking for a AI & API Security - Sales Lead.
We are building this into a fast-growth business line. You will lead Upstream's AI & API Security business globally - the number, the sales strategy, and the execution. This is a builder's role, and you will define and lead the sales motion, work closely with our regional sales leaders, marketing, product, and CSM teams, close the first flagship logos yourself, and then scale it through our global sales organization.
This role is full-time and is based in Herzliya, Israel.
Responsibilities:
Lead the AI & API Security business - carry a global revenue target, and own pipeline, forecast, and pricing for the line of business.
Build and lead the AI & API Security sales motion - define ICP, segmentation, packaging, and the sales playbook, in partnership with regional sales leaders, product, marketing, CSM, and cyber services.
Sell directly - personally lead strategic enterprise outreach end to end, from first meeting through technical validation, solution review, procurement, and close.
Enable the global sales teams - arm regional sellers in North America, EMEA and APAC with training, playbooks, and deal support so AI & API Security scales beyond your own quota. Support the sellers in every stage of the deal and push for closing the deals.
Act as the subject matter expert of the offering - run discovery, architecture discussions, demos, and POVs; represent Upstream at customer executive briefings, industry events, and analyst conversations.

Cye is seeking a Sales Operations Specialist to help support our sales team as we manage incredible growth and new vertical expansion. As a Sales Operations Specialist, you will be responsible for assisting sales leadership with driving operational excellence for Cye. You will also cover the day-to-day administration of Cyes sales team and operational tasks.
This role is a business partner in the sales organization, enabling revenue growth and increasing sales productivity by providing effective methodologies, efficient processes, value-added information, and sales tools.
Responsibilities:
Oversee the process of commercial contracts (NDA, SOW, MSA, Partner agreements) by handling necessary agreements and working with the sales, legal, and finance teams.
Support day-to-day administration of the global sales team and operational tasks. (such as, Support Opportunity and Deal Management, Manage customer and partner onboarding activities)
Act as the sales interface for finance, legal, marketing, and services departments by supporting different GTM initiatives, projects, and tasks.
Assist sales leaders with pipeline and opportunity inspection and validation.
Organize, support, and manage E2E Quarterly Business Reviews (QBRs) - data preparation, reporting, and providing actionable summaries and next steps.
Manage and maintain sales data in Salesforce, CRM, and other sales tools.
Conduct regular pipeline and activity reviews with Sales team and maintain daily, weekly, monthly, and quarterly reports and KPIs.
Proactively identify operational gaps, data-quality issues, process inefficiencies, and opportunities for automation or standardization.
Own and maintain the Sales Ops knowledge base, including policies, procedures, templates, onboarding materials, training resources, and best practices.
Assist with onboarding and training of new sales representatives.

we are looking for a Algorithm Team Lead
As a Team Leader on the Bidding Strategies Algo team in our TLV Office, youll play a vital role in shaping how Advertisers bid in real-time auctions at massive scale.
You will lead the optimization of our existing bidding strategies and the design of new ones, formulating bidding problems mathematically, applying control-theoretic methods, and analyzing the complex dynamics of a closed-loop.
By guiding team members and partnering closely with engineering, youll turn theoretical insights into robust production solutions. Your work will directly influence advertiser ROI efficiency across thousands of advertisers.

we are looking for a Technical Account Manager- Temp.
As a Technical Programmatic Account Manager in our Tel Aviv Office, you will collaborate with cross-functional teams to drive monetization and growth. Utilizing your expertise in GAM, and other programmatic platforms, you will manage B2B client relationships and leverage product portfolios. This is a cross functional role that leverages strong communication and analytical skills to identify trends and deliver actionable insights.

Semi Conductor Devices (SCD), a worldwide leader of high-end Infrared Detectors and thermal video cores, is seeking a Senior Digital VLSI Engineer to participate in the definition, design, verification, implementation, and silicon validation of next-generation infrared image sensors. Responsibilities • Be part of a team defining future Image Sensor Digital controller Architecture • Participate in the digital design and verification effort of state-of-the-art IR Image Sensors, working closely with the Analog designers and Board designers (internal and external interfaces) • Take part in ASIC development lifecycle (pre- and post-silicon) – from Spec definition to block-level design, full-Chip till Silicon Validation in the laboratory and customer support • Lead the design and integration of complex digital blocks from specification to silicon • Drive VLSI innovation and integration of new technologies into projects and activities in the design organization