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Senior Back-End Engineer - Python /GO

ריקרוטיקס בע"מ

Location: More than one

Job Type: Full Time and Hybrid work

a Senior Back-End Engineer to join our mission and shape the infrastructure to reinvent
how trust is built between companies.
Youll design and build robust, scalable services that power both our cutting-edge LLM
capabilities and core B2B workflows.

What Youll Do:
Design, implement, and maintain backend systems that are fast, scalable, and production-ready.
Build infrastructure and APIs that support our AI-driven features as well as broader B2B product functionality.
Take full ownership of backend featuresfrom understanding the product goal to ensuring they work reliably in production.
Collaborate closely with Product Managers, AI researchers, and frontend engineers to align on goals and execution.
Ensure strong system reliability, security, and performance.
Stay current with modern backend development practices, including AI-assisted cod

Requirements:
5+ years of backend development experience, preferably in B2B SaaS environments.
Proficient in Python ; Go experience is a plus.
Experience with NoSQL databases (e.g., Firestore).
Hands-on experience with cloud infrastructure (AWS is a plus) and CI/CD workflows
Strong system design skills and ability to reason about trade-offs.
Experience leading technical design is a big plus.
Proficiency using AI tools (e.g., Cursor or GitHub Copilot) to accelerate development.
Experience building AI systems (agents, chatbots) - advantage
Bachelors/Masters degree in Computer Science, Engineering, or a related field

This position is open to all candidates.

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04/08/2025

Senior Backend Engineer (AI team)

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time and Hybrid work

We are looking for a Senior Backend Engineer to join our AI/ML team. In this role, youll work closely with data scientists to transform cutting-edge machine learning models into scalable, production-ready services. You will take ownership of designing, building, and maintaining the backend systems that power our AI-driven features.

This is a key position that bridges the gap between data science and production engineering, ensuring high performance, reliability, and maintainability of our ML-powered products.

Responsibilities:
Collaborate with data scientists to understand modeling outputs and convert them into deployable services.
Design and develop robust, scalable backend systems and microservices to support AI use cases.
Own the deployment and monitoring of ML models in production (with CI/CD, logging, observability).
Implement data processing pipelines in support of model training and inference.
Ensure software adheres to best practices in architecture, testing, and documentation.
Optimize model inference for latency, throughput, and resource efficiency.
Contribute to design decisions and technical strategy alongside AI and infrastructure leads.

Requirements:
Requirements:
5+ years of experience as a backend/software engineer, preferably in Python, Go, or Java.
Strong experience with designing APIs, building microservices, and integrating third-party services.
Familiarity with ML workflows: model serving, feature extraction, and batch vs real-time inference.
strong architectural/design skills, including working with message queues like Kafka, relational and NoSQL databases, and distributed systems.
Experience deploying services in containerized environments (e.g., Docker, Kubernetes).
Proficient with cloud-native tools or on-prem equivalents (e.g., logging, tracing, metrics).
Knowledge of data processing frameworks (e.g., Pandas, Spark, Airflow) is a plus.
Comfortable reading and working with Python-based ML code (scikit-learn, TensorFlow, PyTorch, etc.).
Strong ownership mindset and a collaborative attitude.

Nice to Have:
Experience with model versioning and ML serving frameworks (e.g., MLflow, Seldon, Triton).
Understanding of data privacy/security implications in model and data pipelines.
Experience working in cross-functional teams with data scientists and product owners.

This position is open to all candidates.

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7 ימים

Senior Full Stack Engineer (Backend-Oriented)

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

We are looking for a Senior Full Stack Engineer with a strong backend orientation and deep Python experience 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.

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.

Requirements:
5+ years of professional experience as a Full Stack or Backend Engineer.
Strong hands-on experience with Pythona must.
Proven experience designing and maintaining complex, scalable systems in productionmust.
Experience working with real-time data pipelines, Elasticsearch, and Vector DBsa strong advantage.
Experience with Node.jsan advantage.
Frontend experience with ReactJS or React Nativenice to have.
Deep understanding of algorithms, data structures, and system optimization.
Strong experience with both relational and non-relational databases (e.g., PostgreSQL, MongoDB).
Familiarity with AWS, Docker, Kubernetesan advantage.
Excellent collaboration and communication skills, with a proactive and impact-driven mindset.
BSc in Computer Science or a related fieldor equivalent hands-on experience.

This position is open to all candidates.

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24/08/2025

Senior Backend Engineer

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

Were looking for a Senior Backend Engineer to join our core engineering team and help us scale mission-critical services and build new capabilities around LLM-powered agents, HRTech integrations, and a growing global platform.
What Youll Be Doing:
Architect, build, and maintain robust and scalable backend services in Node.js
Design and implement cloud-native services on AWS, using Lambda, ECS, S3, and related tools.
Work with MongoDB, queues, and containers to handle high-volume async processing.
Integrate with 3rd-party systems via REST APIs, including HRTech platforms, ATS systems, and communication tools.
Build and maintain services that support our AI/LLM-driven agents (chatbots, screeners, scheduling assistants).
Collaborate closely with Product, Frontend, and AI teams to ship high-impact features.
Follow engineering best practices around testing, observability, and CI/CD.

Requirements:
What You Bring:
5+ years of experience building backend services with Node.js.
Deep experience with Typeform, MongoDB, AWS, Lambda, Docker/containers, and message queues (e.g., SQS, RabbitMQ).
Proven experience in building or integrating LLM-based solutions (e.g., agents, bots, AI services).
Strong understanding of API design and systems integration.
Excellent communication skills and a strong team player mindset.
Passion for clean, scalable, and well-tested code.

Nice to Have (Big Plus):
Exposure to conversational AI tools and prompt engineering.
Experience with HRTech platforms, ATS integration (Workday/SuccessFactors/Oracle).
Experience with Microsoft Teams App development or Outlook API integration.

This position is open to all candidates.

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10/08/2025

Staff Engineer, Platform (DX)

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

We are looking for a Staff Engineer.
What Youll Do:
Lead architecture and system design for critical components of the Developer Experience platform, ensuring scalability, resilience, and long-term maintainability.
Own end-to-end delivery of complex initiatives, from requirements gathering and design to implementation, rollout, and observability.
Design, implement, and maintain robust microservices supporting high-throughput and low-latency operations.
Define and uphold API design standards, including gateway configuration, versioning strategy, and long-term lifecycle management.
Build and optimize backend systems that enable developer-facing products such as SDKs, APIs, and webhooks.
Work with both relational and NoSQL databases to ensure data consistency, scalability, and performance.
Collaborate with cross-functional teams to design systems that meet operational and business requirements.
Research and implement cloud-native architectures to support growth and scalability.
Contribute to the creation of developer tools and standards that improve the usability of our APIs and SDKs.

Requirements:
10+ years of experience in backend development, with a strong focus on scalable infrastructure.
Proficiency in Node.js and TypeScript; additional experience with other backend languages is a plus.
Strong expertise in relational and NoSQL databases, including schema design, query optimization, and troubleshooting.
Experience designing and managing RESTful APIs, including versioning strategies, API gateway integration, and developer-first design.
Proven experience designing and deploying microservices-based architectures in production environments.
Hands-on experience with cloud providers (AWS, GCP, Azure) and container orchestration tools (e.g., Kubernetes, Docker).
Solid understanding of system design principles, distributed systems, and scalability.
Experience with monitoring and logging frameworks (e.g. Datadog, Prometheus, Grafana, ELK stack).
Deep understanding of REST APIs and event-driven architectures.
Advantage - Familiarity with AWS, Servers-less
Strong problem-solving skills, with the ability to troubleshoot production issues effectively.
Ability to manage multiple priorities and thrive in a service-oriented, fast-paced environment.
Bonus Points:
Experience designing developer-centric SDKs, tools, or CLI utilities.
Track record of contributing to internal platform teams or DX-focused initiatives.
Knowledge of OpenAPI/Swagger specifications and API documentation best practices.
Passion for elevating developer experience and usability across engineering platforms.
Hands-on experience in designing developer-friendly SDKs and APIs.
Knowledge of CI/CD pipelines and best practices for automated testing and deployment.

This position is open to all candidates.

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31/07/2025

Software Engineer

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time and Hybrid work

Required Software Engineer
About The Role:
Your responsibilities will span from design to implementation of a complex, time-critical, microservices-based system, that leverages event-driven design to handle large volumes of clinical data and provide advanced interface (mobile and web) to manage clinical workflows. You will collaborate closely with cross-functional teams including AI researchers, data engineers, product managers, and clinicians, helping us deliver life-saving technologies to hospitals. This is a hands-on, high-ownership role where your technical expertise, creativity, and leadership will drive real-world outcomes measured in lives saved.
Tech stack:
We are running on AWS and using various technologies to power our services. Our services are Python-based, and we leverage open-source technologies like RabbitMQ, Redis, and Elasticsearch to achieve scale, performance, and robustness. We also encourage the use of AI-powered coding tools such as Junie and Cursor to boost productivity, code quality, and delivery speed.
You will:
Own your domain and ensure code quality, system performance, and product scalability
Build and maintain microservices written in Python
Design and implement event-driven systems to handle large-scale clinical data
Collaborate closely with stakeholders across product, design, AI, and clinical teams
Mentor and coach other developers, setting high standards for clean, maintainable code
Treat AI as a core part of your workflow, using tools like ChatGPT to enhance productivity and output
This role may be for you if youre excited about:
Seeing your work directly translate to lives saved
Delivering mission-critical, real-world systems at scale
Leveraging cutting-edge AI tools like Junie and Cursor to accelerate your workflow in a team that embraces modern development practices
Working with world-class engineers and researchers whove taken startups from seed to exit
Being part of an open, supportive, and fun team.

Requirements:
3+ years of experience in full-stack or backend development, with a strong focus on Python
Experience designing and building scalable, cloud-based microservices (preferably on AWS)
Strong understanding of event-driven and distributed systems
Proven ability to mentor peers and lead by example in coding standards
Excellent communication skills and a collaborative mindset
Bonus: Familiarity with AI-assisted coding tools like Junie or Cursor.

This position is open to all candidates.

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11/08/2025

Backend Engineer

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

Were looking for a talented Backend Engineer with plenty of hands-on experience to join our dynamic team, building a state-of-the-art platform for benchmarking, evaluating and monitoring LLM-based applications. Youll design and implement scalable backend systems to support advanced evaluation workflows, under high-volume, low-latency performance requirements. This role offers a unique opportunity to work on the cutting edge of LLM/LLMOps systems in a fast-paced startup environment.
What you will do:
Design, develop and deploy distributed backend systems in Python, onto AWS cloud.
Own features end-to-end: from ideation, architecture design, coding, integration, all the way to deployment and testing.
Build, maintain and optimize our APIs (REST/SDK) for seamless platform functionality.
Ensure system reliability through testing and CI/CD pipeline contributions.
Collaborate with Product and Machine Learning Engineers to deliver innovative LLM evaluation tools.

Requirements:
At least 5 years of backend development experience.
Proficiency in Python (or other high-level programming language, such as Java, Golang) with amazing coding skills.
Experience with relational databases (e.g. PostgreSQL) and complex data migrations and message queue technologies (e.g. SQS, RabbitMQ, Kafka)
Familiarity with AWS ecosystem (e.g. EKS, Queues, Redis, RDS, IAM) or other cloud provider.
Knowledge of REST/SDK API best practices development.
Ability to own features end-to-end (from design to deployment).
Product-driven mindset focused on scalable solutions.
Collaborative, adaptable mindset for a fast-moving startup (prior startup experience is valuable).
Nice to have:
Advantage to Frontend/Fullstack experience, in particular with React and TypeScript.
Familiarity with JS fundamentals, component-based architecture and modern frontend workflows.
Proficiency in DevOps technologies (Docker, Kubernetes, Terraform, Monitoring and Observability Tools).
Experience with LLM-based systems or MLOps.

This position is open to all candidates.

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06/08/2025

Senior Backend Infrastructure Engineer (.NET)

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

Were looking for a Senior Backend Infrastructure Engineer (or Tech Lead, for the right candidate) to join our core infrastructure team. This role is all about building and evolving scalable, high-performance backend systems that serve as the foundation for all our product engineering teams.
Youll be responsible for designing and developing distributed systems, owning critical backend infrastructure services, and working closely with architects, DevOps, and product engineers to ensure our platform is reliable, efficient, and future-proof.
In this role, you will be responsible for:
Designing, developing, and maintaining scalable infrastructure services and middleware in a distributed microservices environment.
Leading cross-team backend infrastructure initiatives that impact the entire R&D organization.
Building robust systems that support our product teams with high availability, observability, and fault tolerance.
Partnering closely with architects, DevOps, and backend engineers to define and implement best practices across the stack.
Driving performance improvements and architectural evolution with a long-term vision in mind.
Proactively identifying technical gaps and areas for optimization across our backend infrastructure.

Requirements:
5+ years of hands-on server-side development experience in .NET
Strong understanding of distributed systems and microservice architecture
Solid grasp of object-oriented design principles and clean code practices
Proven ability to take ownership and drive initiatives independently
Strong communication skills and a collaborative mindset
B.Sc. in Computer Science or equivalent experience
Bonus Points
Experience with any of the following is a plus:
CI/CD pipelines and infrastructure as code (DevOps mindset)
Frontend development (React/Angular or similar)
Node.js or JavaScript/TypeScript services.

This position is open to all candidates.

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31/07/2025

Senior Software Engineer - Platform Team

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time and Hybrid work

Required Senior Software Engineer - Platform Team
About the role:
As a Senior Software Engineer - Platform Team you will help deliver a smooth and consistent developer experience to our product/AI teams. This enables them to iterate quickly and deliver products faster to the market. The team aims to streamline development processes, reduce friction and provide developers with the right tools and infrastructure to build high-quality software efficiently which effectively aligns technical execution with our business objectives..
You will:
You will have a direct impact on devs' daily smile :) , by focusing on their Devex and velocity through implementing and providing easy and intuitive self serve tools.
Lead the design and implementation of infrastructure of complex, time-critical microservices systems, collaborating with AI, data, and product teams to ensure high-quality code using latest technologies while maintaining high developer velocity.
Drive improvements to backend infrastructure, focusing on scalability, reliability, and performance to enhance the daily experience and productivity of developers, including implementing intuitive self-serve tools.
Contribute to defining and realizing the technology vision of the company, evaluating and integrating new technologies to enhance platform capabilities including Gen AI, and troubleshooting complex issues to ensure platform performance and availability. Proactively establish and maintain CI/CD practices and processes including hybrid envs.
Enhance system scalability, performance, and reliability.
What success looks like:
Leading the design and implementation of infrastructure for complex microservices systems, ensuring high-quality code, and maintaining a high pace of development while collaborating effectively with other teams.
Driving improvements to the backend infrastructure, focusing on scalability, reliability, and performance to enhance the daily experience and productivity of developers.
Contributing to the company's technology vision by evaluating and integrating new technologies, including Gen AI, and troubleshooting complex issues to ensure platform performance and availability.
Working closely with development teams to support architecture best practices and enhance system scalability, performance, and reliability.
Mentoring and advising other team members in code review, performance, scalability, and more.
Demonstrating excellent communication and collaboration skills, and being a team player with a highly motivated, can-do approach.
Why should you join us?
You can see your work translated into number of lives saved
You will work on core components that involve cutting edge technologies
You will improve the platform and impact the day to day work of developers and patients
You have the opportunity to work with a world-class team of developers and researchers
You will have a significant impact on all aspects of of SDLC
You love Interacting with great people who are open and fun to hang out with.

דרישות:
Minimum of 10 years BE/ platform experience with proven experience as a Platform Engineer or similar role
Knowledge of microservices architecture and distributed systems principles.
Hands-on experience with CI/CD systems such as github actions, Gitlab, Jenkins etc.
Familiarity with monitoring and logging tools (e.g., Prometheus, ELK stack) and concepts for proactive system management.
Strong communication skills and the ability to effectively communicate technical concepts with excellent problem-solving skills and ability to thrive in a fast-paced, collaborative environment.
Hands-on experience with containerization technologies (e.g., Docker, Kubernetes) and container orchestration platforms.
Autodidact that is eager to learn new technologies with Strong background in cloud infrastructure management is a big advantage.
Proficiency in high level language such as Python or similar and familiarity with bash and linux shell commands.#ENGLI המשרה מיועדת לנשים ולגברים כאחד.

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1 ימים

Senior Backend Engineer User Data

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

Realize your potential by joining the leading performance-driven advertising company!
As a Senior User Data Engineer in the Demand group in our Tel Aviv office youll play a vital role in developing one of the largest real time big data operations in the world to support over 40TB of new data every day.
Our Tech Stack: Java, JS, TS, Python, Reactive, Spark, Kafka, Hadoop, Cassandra, Vertica, ES, MySQL, Memcached, HDFS, Iceberg, BigQuery, Druid, Kusto, Docker, K8S, Linux, Prometheus, Grafana, Airflow
Gen AI: Cursor, Junie, GitHub Copilot, Langfuse and much more
How youll make an impact:
As a Senior Software Engineer, youll bring value by:
Design, develop, and address scalability challenges in our user data pipeline and identity graph, ensuring efficient handling of high-throughput, high-performance systems
Have end to end ownership: Design, build, ship, measure and maintain our frontend and backend services
Collaborate with the brightest software engineers team members
Influence directly on the way billions of people discover the internet
Develop at unimaginable scale, serving thousands of requests per second
Work on innovative projects that are the next growth engines for our company
Here are some of the things software developers in our group did in the last several months:
A unique data pipeline for processing and managing user data signals
Driving our companys data advantage by leveraging real-time user signals to uncover intent and boost key business performance metrics
Develop a complete user identities graph and find deterministic and probabilistic methods to enrich it
An algorithmic model to predict the performance potential of a specific audience
Infrastructure to create unique audiences for advertisers based on various signals (behavioral, contextual, etc)
An A/B tests system to explore variations and experiments over audiences
Understand and use big data algorithms to estimate key business metrics over billions of impressions
Build user interface using React that serve thousands of users.

Requirements:
6+ years of experience in object oriented programming and infrastructure development
BSc in computer science or equivalent (please include GPA)
Strong end-to-end ownership mindset
Proven experience and strong understanding of big data systems, including hands-on work with a variety of database technologies
Proven experience as a tech leader, including mentoring and guiding of others
Production systems experience
Product driven and business oriented
Strong analytical skills
Fearlessness to dive into what you dont know
Passion for solving complex scaling challenge
Willing to work intensively to gain fast results in an unknown field
High self-learning abilities
Excellent communication and collaboration skills to work across teams
Bonus points if you have:
Experienced developing large scale distributed systems, Experienced with Web/JS, Experienced with Kafka / Docker / K8S, Experienced with NoSQL and big data distributed DB (Vertica / Cassandra / ES / BQ) Experienced with Spark / HDFS.

This position is open to all candidates.

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8336263

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11/08/2025

Senior Backend Engineer

חברה חסויה

Location: Tel Aviv-Yafo

Job Type: Full Time

An innovative network security solutions provider, is at an exciting time in its history and is growing fast! We are looking for a highly skilled and versatile Senior Backend Engineer to join our development team.
As a Senior Backend Engineer, you will be responsible for designing, developing, and maintaining the backend infrastructure and components of our platform. As part of your role, you will also work on the frontend aspects of our platform and collaborate with stakeholders and cross-functional teams to optimize full-cycle system performance.
Responsibilities:
Design, develop, and maintain backend systems and APIs to support our web applications.
Implement and optimize data storage solutions, including databases, to ensure efficient and reliable data management.
work closely with front-end developers to integrate backend functionalities and ensure a seamless user experience.
Collaborate with product managers, stakeholders, and cross-functional teams to gather requirements, translate them into technical specifications, troubleshoot and resolve backend-related issues, and optimize system performance.

Requirements:
Bachelor's degree in computer science, Software Engineering (or equivalent work experience).
5+ years of experience as a software engineer with hands-on production experience working in the backend side of complex systems.
Strong proficiency in at least one backend programming language (e.g., Go, C#) and associated frameworks.
Hands-on experience in the following technology stack: Kubernetes & Helm, Frontend experience, NodeJS (Typescript), Elasticsearch.
Experience with relational databases (PostgreSQL- advantage), and ability to design efficient schemas and write optimized queries.
Strong problem-solving skills and ability to work both independently and as part of a team.
Excellent communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams.
Low-level understanding of network protocols and Windows internals- advantage.
Experience with cloud services (GCP/AWS/Azure)- advantage.

This position is open to all candidates.

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8298990

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