לוח משרות דרושים Senior Backend Developer

We're looking for exceptional Senior Back-End JavaScript developers, with expertise in Node.js. MongoDB, Express, Kubernetes, RabbitMQ, Cassandra and Snowflake.
In this role, you will take full ownership of product and feature development, using cutting-edge technologies, in a fast-paced and professional agile environment.
*Hybrid position.
Responsibilities:
End-to-end feature development, from conception to production.
Participate in system design and architecture planning, for optimal software performance.
Take on independent responsibilities, while contributing to the team's collective goals.
Actively learn, adapt and stay up-to-date with the evolving tech landscape, including best practices.

Were looking for an experienced, hands-on Engineering Manager to lead the development of Vibers next generation of business communication capabilities - shaping how companies integrate and leverage Viber as a communication platform to engage with their customers at scale.
In this role, youll drive the technology that enables businesses to connect, interact, and build trust with hundreds of millions of Viber users worldwide through secure, high-performance, and intelligent communication experiences.
This is a strategic, high-impact leadership position where youll blend deep technical expertise with product vision - defining how Viber evolves as a platform for business engagement and customer connection.
Responsibilities:
Work with high-performing engineers to deliver scalable, high-quality products.
Stay hands-on with backend development - developing, mentoring, reviewing, and guiding engineers through complex Java-based systems.
Drive execution of strategic product goals in partnership with Product, Business, and Senior Management.
Architect and evolve our infrastructure for performance, reliability, and scale.
Foster excellence - hire, coach, and grow world-class engineering talent.
Champion innovation, exploring new technologies (including AI-assisted development) to increase productivity and quality.
Measure and optimize system performance, scalability, and developer velocity.

We are a global team of engineers dedicated to creating the best tools to ensure safe, convenient, and fun communication for millions of users worldwide. Our culture is built on innovation, teamwork, and a commitment to excellence. We offer a unique opportunity to work with cutting-edge technologies, including microservices architecture, and influence the lives of millions of people.
As a Backend Developer , you will be involved in developing and maintaining high-traffic with over 1 billion messages a day and dozens of scalable services, ensuring the fast and reliable operation of our platform. Your tasks will include developing new features, optimizing performance, ensuring data security, and solving complex technical challenges within our microservices architecture, using a combination of Java, along with non-blocking and reactive approaches, Cloud services, and NoSQL databases.
Responsibilities:
Planning, designing, developing and maintaining Java high-availability applications that can be high-volume and low-latency.
Define application objectives and functionality.
Ensure application designs conform with business goals.
Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review.
Work in a highly motivated team, closely with Product and Architects teams on large mission-critical systems.

Were looking for an experienced, hands-on R&D Director to lead the development of next generation of business communication capabilities - shaping how companies integrate and leverage as a communication platform to engage with their customers at scale.
In this role, youll drive the technology that enables businesses to connect, interact, and build trust with hundreds of millions of users worldwide through secure, high-performance, and intelligent communication experiences.
This is a strategic, high-impact leadership position where youll blend deep technical expertise with product vision - defining how evolves as a platform for business engagement and customer connection.
Responsibilities
What Youll Do:
Work with high-performing engineers to deliver scalable, high-quality products.
Stay hands-on with backend development - developing, mentoring, reviewing, and guiding engineers through complex Java-based systems.
Drive execution of strategic product goals in partnership with Product, Business, and Senior Management.
Architect and evolve our infrastructure for performance, reliability, and scale.
Foster excellence - hire, coach, and grow world-class engineering talent.
Champion innovation, exploring new technologies (including AI-assisted development) to increase productivity and quality.
Measure and optimize system performance, scalability, and developer velocity.

We are establishing a new backend group that will take full ownership of a core application area.
We are looking for a Senior Backend Developer who will lead the backend effort end-to-end - from initial architecture and technology choices, through implementation and scaling, and into long-term ownership and evolution.
This is a hands-on technical leadership role. You will design, build, and own production systems, work closely with multiple teams, influence product direction, and set the technical bar for the group.
We embrace an agile mindset - you should be comfortable with context switching, handling multiple priorities, and adapting quickly to changing requirements.
Responsibilities
Take full ownership of the backend architecture for a major application area
Design and implement scalable, reliable, and maintainable backend systems
Lead technical design and decision-making, including technology and architecture choices
Work closely with product, frontend, platform, and other backend teams
Participate in product vision discussions, brainstorming, and planning sessions
Translate product requirements into robust technical solutions
Write high-quality, production-grade code
Drive debugging and root-cause analysis of complex production issues
Ensure best practices in performance, reliability, security, and observability
Mentor and technically guide other backend engineers as the group grows.

we are looking for an AI Platform Engineer to revolutionize engineering productivity and drive AI-powered innovation across the organization. This role is part of our Platform Engineering initiative, focused on enabling engineers and product teams with cutting-edge AI tools, intelligent automation, and scalable AI platforms.
If youre an innovator at heart, passionate about applying AI to solve complex engineering problems, and thrive in an environment that values experimentation, ownership, and entrepreneurship-this role is for you.
Responsibilities
Develop and integrate AI-powered solutions that enhance engineering productivity, automate workflows, and improve developer efficiency across the organization.
Evaluate, prototype, and implement state-of-the-art AI platforms using latest models and frameworks (e.g., ChatGPT, Claude, Gemini, LangGraph, Librechat, AWS Agentcore Bedrock) to address engineering and operational challenges.
Design, build, and maintain AI-driven internal platforms, including knowledge management systems, AI-enhanced coding assistants, intelligent automation tools, and AI-powered chatbots.
Collaborate closely with engineering, DevOps, and product teams to embed AI capabilities into everyday development workflows.
Lead Proof-of-Concept (PoC) initiatives, experimenting with LLMs, generative AI, and automation frameworks to deliver tangible business impact.
Research emerging AI trends, tools, and models, and translate them into practical, production-ready solutions.
Build and operate scalable AI infrastructure that integrates with cloud environments and existing engineering toolchains.
Promote a culture of innovation by empowering teams to adopt AI-driven solutions and sharing knowledge and outcomes across the organization.

We are establishing a new backend group that will take full ownership of a core application area.
We are looking for a Senior Backend Developer who will lead the backend effort end-to-end - from initial architecture and technology choices, through implementation and scaling, and into long-term ownership and evolution.
This is a hands-on technical leadership role. You will design, build, and own production systems, work closely with multiple teams, influence product direction, and set the technical bar for the group.
We embrace an agile mindset - you should be comfortable with context switching, handling multiple priorities, and adapting quickly to changing requirements.
Responsibilities
Take full ownership of the backend architecture for a major application area
Design and implement scalable, reliable, and maintainable backend systems
Lead technical design and decision-making, including technology and architecture choices
Work closely with product, frontend, platform, and other backend teams
Participate in product vision discussions, brainstorming, and planning sessions
Translate product requirements into robust technical solutions
Write high-quality, production-grade code
Drive debugging and root-cause analysis of complex production issues
Ensure best practices in performance, reliability, security, and observability
Mentor and technically guide other backend engineers as the group grows.

We are looking for a brilliant and highly motivated Senior Backend Engineer who is passionate about technology and making an impact. You will work on the core processing system of our application, revolutionizing the way the audio and video is recorded.

As a Senior Software Engineer, youll play a key role in building a secure, high-performance payments platform. Youll optimize payment routing, integrate global payment gateways and alternative payment methods, implement fraud detection and chargeback management, and help build a data lake for analytics and operations. This role is ideal for engineers with end-to-end experience who thrive in fast-paced, high-growth environments.
Responsibilities:
Building our high scale cloud-based payments platform in Node.js
Have end to end ownership: Design, build, ship, measure and maintain low latency, high availability and high performance services.
Bring your unique experience - we are open to new ideas and expect you to bring our team and platform to a new level
Optimize resource usage (database, infrastructure, integrations)
Mentor and guide software engineers and help build a professional and effective team.

We are seeking a Senior backend Engineer with proven experience in large-scale systems and a deep understanding of performance and scalability to drive the evolution of our rapidly growing application. In this position, you will be part of delivering complex features while building the infrastructure required to support our product's enterprise-level growth. You will be involved in the entire lifecycle, from product requirements and technical design to implementation, for a complex system used by major global financial carriers.
What you will do: Implement and deliver new features based on product requirements. Implement enhancement infrastructure to support the scale of the product. Deliver high-quality features, including AI-driven functionalities that enhance decision-making and User Experience. Participate in design discussions and conduct code reviews. Develop unit and integration tests. Assist in resolving Real-Time customer issues. Actively share knowledge with other team members to tackle technical challenges.
Position Intro:
we are the premier provider of mission-critical, cloud-based intelligent decisioning across pricing, rating, underwriting, and product personalization. These fully-integrated solutions provide ultra-fast ROI and are designed to transform how global insurers and banks are run by unlocking value across all facets of the business. our company has been innovating for insurers and banks since 2001 with customers in over 35 countries across six continents and offices in the Americas, Europe, Asia Pacific, and Israel.

We are looking for a Senior Software Engineer to join our Decision Engineering team. The group is responsible for the real-time, low-latency infrastructure that powers our fraud decisions and external APIs.
Our systems process billions of requests every day, ensuring high availability, security, and performance at global scale.
In this role, youll work on core backend components such as our decision engine, ingestion and enrichment pipelines, schema management systems, and self-serve API platform. The software you build will power critical business decisions and directly serve some of the worlds largest merchants.
This is a high-impact, high-ownership position for an engineer who thrives on solving complex distributed systems challenges, cares deeply about production-grade quality, and wants to shape the foundation of our decisioning platform.
What you'll be doing:
Lead the architecture and evolution of our decision engine and related services: real‑time decision APIs, rule and policy engines, model‑serving interfaces, and the orchestration layers that tie them together.
Design and implement highly available, low‑latency, distributed systems that process large‑scale event streams and support complex decision workflows.
Collaborate with product, risk, and customer‑facing teams to translate risk strategy and merchant needs into robust system capabilities (e.g., configurable decision flows, exemptions, auditability, analytics surfaces).
Mentor and coach engineers across levels in areas such as distributed systems design, reliability engineering, and systems thinking, elevating the overall standard of engineering in the group.
Participate in technical discussions and customer interactions, providing expertise and clear communication when supporting enterprise integrations.

We are looking for a Senior Big Data Engineer to join our growing ML Platform team. This is a great opportunity for an experienced Data Engineer who wants to apply their skills to the world of Machine Learning. Together, well provide the high-throughput tools and distributed systems needed to process billions of data points, ensuring that our models have the feature-rich, reliable data they need to perform in real-time.
ML is central to our work. It enables us to process billions of dollars worth of e-commerce transactions and identify fraud rings. Precision at scale is crucial-our models depend on engineered features derived from massive datasets. As the volume of data and the complexity of these models grow, we need senior engineers who can solve the "Big Data" challenges inherent in modern MLOps.
Why should you join us?
Youll be part of a highly proficient engineering team that is the focal point for all ML engineering activity. This role is perfect for a Big Data specialist who wants to own the data-intensive side of ML-building the pipelines and infrastructure that transform raw global traffic into actionable intelligence.
What you will be doing:
Designing and building the data-heavy components of our ML infrastructure, allowing our models to make billions of real-time decisions every year.
Building distributed data processing pipelines that power model training, feature engineering, and offline research at scale.
Optimizing the "Feature Store" concept-ensuring that the data used for training matches the data used in production for real-time serving.
Acting as a technical consultant to data scientists and researchers, helping them navigate massive datasets and providing the Spark-based tooling they need to iterate faster.
Expanding our ML data infrastructure to be scalable and efficient, focusing on the performance of data ingestion and transformation for diverse model types.
Improving MLOps standards by ensuring data reproducibility, lineage, and quality across the entire model lifecycle.

We are looking for a Senior AI Engineer to join a strong and dynamic AI Engineering team. We are the focal point for AI initiatives, striving to constantly bring innovation and leverage AI capabilities across all company teams and products.
Today, AI is central to how we operate, across the entire organization. It allows us to move fast and release features at a rapid pace, empowers non-technical Forterians to utilize AI tools for increased efficiency, and provides the backdrop for much of the innovation currently occurring in the company.
If this kind of working environment sounds exciting to you, if you understand that Engineering is about building the most effective and elegant solution within a given set of constraints - consider applying for this position.
Why should you join us?
This is a great opportunity to be at the cutting edge of the AI revolution, helping to shape and build the AI platform for the future. Together, well build infrastructure for autonomous and interactive agents, enact AI guardrails and evaluation frameworks to ensure performance and safety, and implement state-of-the-art
AI and Agentic patterns.
This role presents a unique opportunity to enter the AI domain. For those with some experience in AI infrastructure, it offers the chance to grow within a team that is evolving us from the AI experimentation phase to building and leveraging AI-powered products.
What you will be doing:
Design, build, and maintain reusable AI capabilities - including models, tools, APIs, and platforms that power both internal and customer-facing solutions.
Develop and maintain our internal MCP server that easily and securely exposes our vast data stores to AI agents.
Create and implement robust evaluation frameworks and AI guardrails to safeguard our value and ensure model reliability.
Establish deep expertise and sustainable AI engineering practices.
Promote AI readiness and track adoption across the company to build lasting impact.
Build and optimize RAG (Retrieval-Augmented Generation) systems.
Take full ownership of projects: from gathering requirements from non-technical internal users to development, deployment, and operation.
Act as a consultant and advocate for AI engineering, helping other teams leverage the platforms and tools you build.
Partner with teams across to accelerate AI adoption and productization efforts.

We are seeking a senior back-end engineer passionate about building scalable, resilient systems and driving impact through technology. Join us as we evolve a key product in our portfolio and take a leading role in shaping our Chargeback Coverage & Resolution solution - one of our standout market offerings.
Chargebacks serve as a consumer protection mechanism, allowing people to reclaim funds for fraudulent charges or disputed purchases. However, this system is often exploited by bad actors engaging in fraudulent activities that harm the businesses behind the products you love.
Our Dispute Group is dedicated to safeguarding these companies, using innovative technology to combat chargeback abuse and protect their growth.
If you're driven by ownership, excited about solving complex challenges, and eager to make a meaningful impact, wed love to hear from you!
What you'll be doing:
Develop a fully automated dispute platform to prevent, deflect, and recover chargebacks to reduce revenue loss. The system will support generating millions of dollars in yearly revenue, remove friction, and streamline obsolete operational processes.
Build and maintain a high-performing, scalable chargeback management system handling tens of thousands of requests daily, originating from various input sources and reporting at changing rates.
Define and optimize the scale, reliability, observability, and SLOs of the chargeback management platform.

We are looking for a Senior Backend Developer to join our engineering team. You will focus on developing and maintaining the server-side logic and infrastructure that power our innovative applications.

Who are you?
This is an opportunity to build foundational systems that directly impact how healthcare providers deliver care. Your work will power the platform that thousands of clinicians rely on daily, combining technical challenges with meaningful real-world impact.

How will you contribute?
Audio Processing Pipeline - Design and scale our audio processing infrastructure to handle high volumes with low latency and maximum reliability
LLM Integration & Production - Partner with Data Scientists to instrument, deploy, and operationalize Large Language Models in production environments
Backend Platform - Lead platformization efforts to create abstractions, tooling, and frameworks that elevate backend development across the organization
Modern Tech Stack - Build with Python, FastAPI, Kafka, and Airflow while helping shape our technical evolution
Company-Wide Initiatives - Drive high-impact projects that define product capabilities and technical direction