דרושים » תוכנה » Senior backend Engineer - C # /.NET Core

our company's AI division, delivers AI and software transformation services to leading enterprises in Israel. Backed by our company's team of over 360 professionals, we approach every engagement with high standards, commitment, and agility.
We're looking for a strong Senior Fullstack Developer to join a flagship digital-transformation program at a leading Israeli bank. In this role, you'll design, specify, and develop backend (.NET Core) and frontend (React) components of complex, distributed systems, working in an on-prem containerized environment and making smart use of AI tools throughout development.
What You'll Do
Design, specify, and develop backend (.NET Core) and frontend (React) components of complex, distributed systems.
Help drive a software architecture that meets high standards of performance, scalability, and information security.
Design and integrate internal and external REST APIs.
Build event-driven architecture, including the system's messaging backbone.
Work in an on-prem containerized environment, making smart use of AI tools - including Claude Code - as part of your daily development workflow.

We are looking for a Backend Developer to join our Billing Platform team and play a key role in evolving and modernizing our complex billing systems.
Our team owns billing infrastructure end-to-end - from invoice generation and payment processing to settlements with internal and external partners. Our systems process transactions worth approximately NIS 2 billion annually and scale from tens of thousands to millions of transactions during peak financial periods.
This is your opportunity to make a meaningful impact on critical, high-scale systems, develop new capabilities that support continued growth, and help shape how AI is embedded in our products and development processes.
Responsibilities:
Take end-to-end ownership of projects, including design, development, testing, monitoring, and maintenance.
Design and develop new features and capabilities that support growing products, business domains, and evolving billing needs.
Design and implement complex integration systems in the billing domain.
Build and maintain scalable systems that process high volumes of financial transactions.
Improve team velocity through automation, adoption of new technologies, implementation of smart AI-powered solutions, and better development practices.
Contribute to the development of AI Agents, skills, and workflows within the Billing Platform team.
Collaborate with multiple internal teams and external partners.
Handle ongoing production issues as part of the teams daily work.
Contribute to the teams technical knowledge by suggesting creative solutions and promoting fresh thinking.

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.

we are looking for a Team Lead R&D, Monetization.
As an R&D Team Leader in the Pricing & Packaging R&D crew, youll be a key contributor to designing and building our monetization platform - pricing and packaging engines that drive the core business model of our payments platform. Youll own complex features end to end, influence architecture and standards, mentor your team members, and help shape how we design, build, deploy, and operate services in AWS. This is a hands-on senior role with significant impact and room to lead technical changes.
What youll do:
Collaborate closely with Product, Design/UX, DevOps, and other R&D teams
Lead an autonomous team of software engineers who are working closely with product management for achieving business goals
Put special focus on developing the team
Provide technical authority to your team by demonstrating a hands-on leadership style
Be responsible for the overall design, development, architecture, code quality, and production environment deployment of your team

We are seeking a Staff Software Engineer to serve as a technical anchor for our Identity Authentication engineering team. Driving the modernization of core, mission-critical authentication domains across our primary product, delivering massive impact at scale. You will drive the architectural design, technical roadmap, and implementation of high-throughput, mission-critical SaaS services using AWS architecture, AWS CDK, and .NET. In addition to technical execution, you will mentor engineers, guide design decisions across teams, and ensure our systems satisfy demanding scalability, security, and performance standards (NFRs).
Your Impact:
Architectural Leadership: Drive end-to-end design and system architecture for enterprise-grade Identity & User Management cloud services.
Technical Strategy: Partner with Product Managers and Security Architects to translate complex identity and cybersecurity requirements into scalable software architecture.
Engineering Standards: Elevate technical excellence across the team by setting standards for code quality, resilience, telemetry, and automated testing.
Mentorship & Growth: Technical coaching and mentoring for mid-level and senior engineers to foster team growth and best practices.
Innovation & Problem Solving: Solve complex system bottlenecks, evaluate emerging tech stacks, and optimize AWS infrastructure costs and performance.

Were looking for an experienced Software Engineer to join the Cato Threat Prevention team. In this critical role, you will work with an excellent group of engineers to solve architectural and engineering challenges across both inline and out-of-band security. As part of the role, youll also have the opportunity to work with cutting edge AI technologies - to further enhance and accelerate our development cycle and security capabilities.

Responsibilities:

Work on highest profile security products
From design all the way to implementation of enterprise grade, high scale and volume processing services
Researching new technologies and adapting them for use within companys products
Collaborating with multiple teams - development, product, automation, SRE, DevOps

We are looking for a highly skilled and versatile Backend Engineer to join our development team. As a Backend Developer, you will be responsible for designing, developing, and maintaining the infrastructure and components of our platform. As part of your role, you will work on the backend aspects of our platform and collaborate with stakeholders and cross-functional teams to optimize full-cycle system performance.
Responsibilities:
Develop and maintain code deployed on the cloud side and on Linux.
Collaborate with cross-functional teams to achieve project goals.
Implement high-performance applications with high coverage, maintaining minimal footprint ensuring code is maintainable.
Troubleshoot and resolve complex technical issues related to Linux internals.

Required Full Stack Developer
As a Full Stack Developer, you will:
Develop the next generation features of the main backend services of various Company products
Design and develop high-volume, low-latency and scalable product
Partner closely with product managers, project managers and architects to align technical execution with business goals
Own features from requirements through design, implementation, testing, deployment and production support
Write well-designed, testable (unit/integration/component testing), secured and efficient code.

Required Sr Staff Software Engineer (Credential Provider)
Our Mission:
Were united by a shared mission-to protect our digital way of life. We thrive at the intersection of innovation and impact, solving real-world problems with cutting-edge technology and bold thinking. Here, everyone has a voice, and every idea counts. If youre ready to do the most meaningful work of your career alongside people who are just as passionate as you are, youre in the right place.
Who We Are:
In order to be the cybersecurity partner of choice, we must trailblaze the path and shape the future of our industry. This is something our employees work at each day and is defined by our values: Disruption, Collaboration, Execution, Integrity, and Inclusion. We weave AI into the fabric of everything we do and use it to augment the impact every individual can have. If you are passionate about solving real-world problems and ideating beside the best and the brightest, we invite you to join us!
We believe collaboration thrives in person. Thats why most of our teams work from the office full time, with flexibility when its needed. This model supports real-time problem-solving, stronger relationships, and the kind of precision that drives great outcomes.