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we are looking for a brilliant Marketing data Analyst to join our data department. As part of this position, you will be working alongside various marketing teams that are responsible for acquisition of new users. You'll use your analytical, technical and business expertise to track and measure marketing efforts, uncover trends, spot opportunities, and support key decision-making processes. You will be required to answer complex questions defined by executive management and various business units, develop insightful recommendations and initiate deep-dive analyses. Were looking for someone with a passion for numbers and marketing domain, a proactive mindset who brings creative ideas to solve tough challenges and spot new opportunities.You will leverage AI tools, automation, and advanced analytics to streamline workflows, uncover insights, and support data -driven marketing decisions.
What am I going to do:
* Conduct deep-dive analysis to answer complex business questions and deliver comprehensive recommendations.
* Build and maintain the teams reporting set and dashboards.
* Develop marketing measurement methodologies and data science models.
* Provide ROI-based recommendations to optimize marketing spend across channels.
* Identify opportunities for automation and smarter ways of working through data and AI tools.
* Manage multiple tasks in a fast-paced working environment.
* Collaborate closely with stakeholders across the marketing department.

Justt helps many of the world’s largest and most recognizable brands turn chargebacks from a constant headache into a managed, predictable part of doing business. Our AI-driven platform powers chargeback operations at scale, automating disputes end to end, recovering revenue that would otherwise be lost, and removing a major operational burden from finance, risk, and operations teams across multiple regions and verticals. We’re a global company with teams across markets, and disciplines, working closely with leading players in the payments ecosystem. Our culture is built on clear thinking, collaboration, and a strong sense of ownership. At Justt, you’ll partner with product, engineering, data, success and go-to-market teams to build technology that sits at the core of modern payments, and has a direct, measurable impact on the bottom line for some of the biggest companies in the world. About the Role Justt is seeking a Senior Software Engineer to join the Justt team, which is responsible for the core of Justt's chargeback resolution platform. This role involves managing our central data pipeline, from ingesting chargeback data from Payment Service Providers (PSPs) to submitting dispute responses back to them. This position offers more than standard integrations; you will be tasked with designing and scaling the infrastructure for mission-critical data flows, addressing complex issues in distributed systems, API orchestration, and data integrity. Key Responsibilities
* Own the full lifecycle of PSP integrations and data pipeline systems
* Architect scalable backend services using Node.js, TypeScript, and NestJS
* Ensure data integrity across PostgreSQL and MongoDB at scale
* Drive architectural decisions and system design within our Nx monorepo
* Mentor team members and contribute to engineering best practices What We Offer
* Solve complex technical problems with real impact
* Engineering-driven culture with talented peers
* Significant ownership over architecture and product
* Modern stack: Node.js, TypeScript, NestJS, Nx, PostgreSQL, MongoDB, AWS
* Growth opportunities in a fast-paced fintech company

we are seeking a senior NLP Data Scientist to lead our marketing language predictive modeling. Youll explore complex datasets, build and fine-tune advanced NLP/LLM models, and partner closely with engineering and product to integrate your work into AI content platform.
Responsibilities:
Define and own the technical strategy and roadmap for marketing language predictive modeling
Analyze, process, and derive insights from our ever-growing data resources
Solve challenging prediction problems by applying the latest ML/NLP techniques to build and fine-tune highly performant LLMs
Collaborate with engineers and product managers to ship models end-to-end, from research to production
Monitor and iterate on models using offline and online metrics

Required Senior Product Designer
We are revolutionary startup with a global workforce. We have offices in Tel Aviv, New York City and London and work with customers around the globe. We value collaboration, innovative thinking, and curiosity and were looking for bright, driven, and passionate people to grow with us. If you care about empowering businesses and people to reach their potential, youre in for a fun ride.
Responsibilities
Lead a complex product with full ownership over the product design process.
Partner with product designers, product managers, engineers and researchers to drive a product from conception until launch
Develop product requirements and concepts into wireframes and designs
Design flows and experiences that are functional, delightful and simple
Collaborate with the design team to build our Product Design vision and roadmap.
Contribute to defining and building our design system.

Were looking for a Senior Product Manager, Mobile Platform to define and scale the foundation of our mobile experience. This role sits at the heart of our technology ecosystemowning the platform capabilities that power our flagship app and enable every member interaction.
Youll work closely with engineering, design, and data teams to develop core mobile features, streamline performance, and ensure reliability at scale. From login and navigation to notifications and offline mode, youll shape the infrastructure that supports millions of user moments every day.
This is an ideal role for a deeply technical product manager. You may have started your career in engineering and thrive at the intersection of system architecture, user experience, and product velocity.
Responsibilities
Lead strategy and execution for our mobile platform acting as an enabler across the product portfolio, from core platform capabilities to shared user experiences
Define the roadmap for scalability, performance, and developer velocity in partnership with engineering and data leadership - ensuring the app remains stable, fast, and extensible as we grow.
Partner with Design and Engineering to ensure a seamless, intuitive, and performant experience across iOS and Android.
Partner with our hardware teams to ensure that new devices are effectively integrated with our mobile platform, enabling a seamless experience for users
Establish best practices for instrumentation, experimentation, and observability to drive data-informed decisions.
Collaborate with security, compliance, and data teams to ensure privacy and reliability across all core surfaces.
Contribute to our broader platform visionhelping evolve our infrastructure to support new capabilities like AI-driven personalization and connected clinical services.

We are looking for a Senior Product Manager to join our Payments Optimization group, reporting directly to the Product Director of Payments. You will be the primary technical product owner responsible for driving the execution of high-impact features and system optimizations within the Payments Optimization roadmap.
You should be a true technical product expert and team player, capable of translating the strategic vision defined by the leadership into concrete, valuable, and feasible product increments, and driving those to market with precision.
What you'll be doing:
Roadmap Execution: You will be accountable for the detailed execution of the Payments Optimization roadmap, ensuring timely and high-quality delivery of features that align with the strategic goals set by the team. Work closely with our TLV and UK based engineering and data science teams on a daily basis, as well as our worldwide GTM teams to promote our product to the world.
Deep Technical Ownership: Own the technical definition and requirements for innovative payment products. This includes defining clear business logic, writing detailed user stories, and managing the product backlog.
Interface & Architecture: Lead the definition of critical platform APIs and data, ensuring , together with the engineering team, seamless, high-performance integration with merchant systems, PSPs, and issuing banks. You will be the product voice in architectural discussions with engineering.
Payments Expertise: Gain and maintain a deep, expert-level understanding of global payment protocols (e.g., 3DS, tokenization), regulations (e.g., PSD2/SCA), and authorization signal flows, using this knowledge to define precise product requirements.
You will have fun working with us. Really.

Were looking for a Senior Product Manager, Growth & Experience to accelerate our impact by driving engagement, conversion, and retention across the user journey. Youll own the experiences that turn awareness into activation and activation into long-term habit formationhelping more people take control of their heart health and stay engaged over time.
This is a high-visibility, high-impact role for a product manager who is both data-driven and user-obsessed. Youll combine behavioral science, experimentation, and storytelling to craft experiences that feel personal, intuitive, and motivating. Youll partner closely with Growth Marketing, Design, Data, and Engineering to create seamless, measurable, and delightful interactions that keep users coming back every day.
Responsibilities
Own the end-to-end user journey, from onboarding and activation to ongoing engagement and retention.
Develop and execute a roadmap of features, experiments, and growth loops that drive sustained usage and measurable outcomes.
Leverage experimentation platforms (e.g., Statsig, Mixpanel) to identify the highest-impact opportunities for growth.
Partner with Member Marketing and Engineering to optimize key funnels, including enrollment, onboarding, re-engagement, and conversion.
Collaborate with Product Design to create experiences that are simple, motivating, and grounded in behavioral science.
Define success metrics and use data to measure, learn, and iterate quickly.
Champion a test-and-learn culturerunning rapid experiments to uncover new ways to drive user value.
Communicate progress, insights, and impact to executives and cross-functional partners with clarity and conviction.

Were looking for a Senior Product Manager to play a core role in building our next generation of products across multiple business domains. As part of a rapidly growing product organization, you will help shape new product lines, expand into new markets, and drive meaningful business outcomes in a high-velocity, high-impact environment.
We operate in a B2B2C model we sell to enterprises, but at the end of the day, the product you build is a consumer product used by real people to manage their health. Were looking for someone who is obsessed with impact, deeply curious about user behavior, and motivated by creating products that deliver both business value and meaningful real-world outcomes.
This role emphasizes business thinking, commercial impact, and strong cross-functional partnership. Youll work closely with GTM teams to identify product opportunities and validate market needs. Then, youll collaborate with Design, Engineering, and Data to translate those opportunities into scalable, high-quality products that deliver real customer value and measurable business results.
If you thrive in ambiguity, love turning insights into scalable products, and want to help build a product organization focused on ownership, business outcomes, and fast execution not just feature delivery, this role is for you.
Responsibilities
Lead the full product lifecyclefrom discovery and opportunity sizing to launch, adoption, and iteration.
Translate business goals into product opportunities with clear KPIs and hypotheses.
Make data-driven prioritization decisions that maximize business impact without compromising user value.
Partner closely with GTM teams to understand customer needs, improve win rates, and support commercial strategy.
Collaborate with Design, Engineering, and Data to deliver high-quality products that solve meaningful problems.
Conduct market and competitive analysis to inform product strategy and uncover new opportunities.
Define success metrics, analyze product performance, and use data to guide prioritization and direction.
Drive discussions around pricing, packaging, and product positioning with cross-functional partners.
Communicate product vision, progress, and insights to executives and cross-functional leaders.
Take strong ownership in a fast-moving environmenthelping to establish best practices and shape a rapidly growing product organization.

Were seeking a Director of Product to lead the next generation of innovation across our digital platform. Youll own the strategy and execution for products that deliver measurable impactshaping how technology, user engagement, and business value come together to improve health at scale.
This is a high-impact role for a product leader who thrives at the intersection of technology, behavior, and outcomes. Youll lead a talented team of Product Managers and Analysts, guiding them to translate insights into differentiated, scalable experiences that strengthen our position as the leading digital solution for cardiovascular health.
Responsibilities
Define and execute the product strategy for a core portfolioensuring every product delivers measurable value for users and clients.
Drive discovery, design, and delivery of new capabilities that expand the reach and impact of our platform.
Manage, mentor, and develop a team of 46 Product Managers and Analysts, fostering a culture of clarity, ownership, and velocity.
Partner cross-functionally with Engineering, Design, Data, Marketing, and Commercial teams to bring new solutions to market with speed and precision.
Develop business cases, success metrics, and clear ROI frameworks that connect product outcomes to company growth.
Serve as a key voice in executive and cross-functional discussionscommunicating complex ideas simply and persuasively.
Champion a bias to action, balancing strategic vision with fast, high-quality execution.

We are looking for a Senior Software Engineer with a strong backend orientation who excels at solving complex challenges and is passionate about building robust, scalable, and data-driven systems. In this role, you will work closely with a talented team of engineers, Product, Design, and Data Science to deliver innovative solutions that have a meaningful impact on users' lives.
As a senior engineer, you will take ownership of projects from concept to deployment in a fast-paced, highly collaborative environment. Youll focus primarily on backend development, with the ability to contribute to frontend work as needed. Youll also mentor team members and help drive technical excellence.
Our Technology Stack:
Python, Node.js, React Native, Redux, ReactJS, Scala, Play, Microservices, AWS, Docker, Kubernetes, MongoDB, Redis, PostgreSQL, Spark, Elasticsearch, Vector DBs, Kafka, and more.
Responsibilities:
Backend Development: Design, implement, and maintain scalable, efficient, and secure backend services, with a focus on Python and Node.js.
Data Infrastructure: Work with real-time data systems, including Elasticsearch, Vector Databases, and other high-performance storage and retrieval tools.
End-to-End Feature Development: Deliver features across the stack, integrating frontend and backend components.
Collaborate with Data Science to integrate advanced algorithms and ML models into production systems.
Partner with Product Managers and Designers to brainstorm and execute impactful product features.
Ensure system architecture is reliable, maintainable, and built for scale.
Lead by example: contribute to code reviews, mentor peers, and foster engineering best practices.
Stay up to date with emerging technologies and suggest ways to apply them for performance and scalability improvements.

We are looking for an intellectually curious Senior Mobile Engineer who is passionate about code, high performance and cares about quality. You will work with knowledgeable and experienced developers with a large scale of skills and capabilities who are passionate about developing an innovative product which makes an impact.
The position includes working closely with the Product, Design and Data Science teams, taking full ownership of your work from conception to post-deployment, while continuously learning and evaluating cutting edge technologies in a fast-paced, collaborative environment.
Our Technologies stack: React Native, Redux, React JS, NodeJS, Scala, Play, AWS, Docker, Kubernetes, MongoDB, Redis, Postgres, Spark, Elasticsearch, Kafka, and more.
Responsibility:
Develop code that is used daily around the world and actually saves lives!
Work with our data science team on implementing their algorithms into our new and upcoming data driven solutions.
Collaborate with Product Managers, Experience Designers and Data Engineers on all aspects of product development: strategy, brainstorming, user research, design, execution, AB testing, and iteration.
Take part in making a major difference in our team and influence our technology stack.
Join a great team of people passionate about technology and doing good to the world.

We are looking for an intellectually curious Senior Full-Stack Engineer who is passionate about code, high performance and cares about quality. You will work with knowledgeable and experienced developers with a large scale of skills and capabilities who are passionate about developing an innovative product which makes an impact.
The position includes working closely with the Product, Design and Data Science teams, taking full ownership of your work from conception to post-deployment, while continuously learning and evaluating cutting edge technologies in a fast-paced, collaborative environment.
Our Technologies stack: React Native, Redux, React JS, NodeJS, Scala, Play, AWS, Docker, Kubernetes, MongoDB, Redis, Postgres, Spark, Elasticsearch, Kafka, and more.
Responsibility:
Develop code that is used daily around the world and actually saves lives!
Work with our data science team on implementing their algorithms into our new and upcoming data driven solutions.
Collaborate with Product Managers, Experience Designers and Data Engineers on all aspects of product development: strategy, brainstorming, user research, design, execution, AB testing, and iteration.
Take part in making a major difference in our team and influence our technology stack.
Join a great team of people passionate about technology and doing good to the world.

We are looking for an intellectually curious Senior Backend Engineer who is passionate about code, high performance and cares about quality. You will work with knowledgeable and experienced developers with a large scale of skills and capabilities who are passionate about developing an innovative product which makes an impact.
As a Backend Engineer, you will join a small team of experienced and highly talented engineers, and help us build great services for a product that actually saves lives by taking lead, work with a variety of technologies and projects.
You will work on the core of our infrastructure and backend services, where large volumes of medical data and end-user behavior are processed and built into efficient services that can scale as fast as we do. Focusing on mission critical services that are responsible for handling the business and revenue operations with complex behaviour and external integrations supporting evolving business needs and new initiatives.
Our tech-stack: Scala, Javascript + Typescript, Kafka, Kafka Streams, MongoDB, PostgreSQL, Redis, AWS, Kubernetes, Nginx, Docker, Jenkins, ELK, Prometheus and more!

We are seeking a talented and motivated Senior Data Scientist to join our AI team. In this role, you will lead the development of our best-in-class conversational heart health agent. You will work on highly complicated challenges, spanning from deep research to full-scale production. Your work will leverage cutting-edge Generative AI and agentic architectures to help solving one of the world's most significant and urging clinical issues: cardiovascular disease. Your contribution will directly impact healthcare practices and enhance the well-being of individuals globally.
Responsibilities:
You will take ownership of designing and building a conversational heart health agent, utilizing advanced LLM techniques, RAG (Retrieval-Augmented Generation), and flow engineering.
You will architect and implement complex agentic and multi-agentic graphs using tools like LangChain and LangGraph to handle intricate clinical logic and user interactions.
You will not just research; you will write production-grade code. You will be responsible for optimizing, deploying, and maintaining these systems in a live environment.
You will implement robust monitoring and debugging workflows for agentic products (using tools like LangFuse or LangSmith) to ensure safety, accuracy, and performance.
You will work closely with product managers and clinical experts to translate clinical research into digital insights and conversational flows that will be used on a daily basis.
You will innovate and make new ideas happen fast, in an agile way, keeping up with the rapidly evolving landscape of GenAI.