לוח משרות דרושים Senior Backend Developer

Design and develop scalable and reliable backend systems using modern programing languages and frameworks.
Implement and maintain components that handles data in very large scale and in very low latency.
Optimize components working with database and queues to ensure high performance and scalability.
Implement security measures to protect user data and ensure system integrity.
Troubleshoot and resole complex technical issues that may arise.
Provide mentorship and guidance to junior team members.

We are looking for a highly skilled Backend Engineer Developer to join our platform management team. This team is responsible for the development, scaling, and maintenance of our core platform, which serves as the backbone for our product offerings.

Youll work on both backend and frontend technologies, designing and implementing features that drive our platforms growth, stability, and performance.

If you are passionate about building scalable, high-performance systems and enjoy solving complex technical challenges, we would love to hear from you!



Key responsibilities

Lead, design and build highly scalable and high-quality web applications by enforcing best practices around software engineering architecture and processes
Raise the bar on engineering excellence by improving standard methodologies, producing best in class of code, documentation, testing, and monitoring
Identifying and resolving technical issues and performance bottlenecks.
Collaborate with cross-functional teams (including Product managers, DevOps, and Support) to ensure smooth feature releases and platform stability
Stay up to date with emerging technologies and industry trends. Implement improvements and leverage new technologies to enhance platform capabilities.

We are looking for a Senior Backend Engineer to join our R&D team in developing the new rising product in the health landscape.

As a Senior Backend Engineer, you will have an impact on how we architect, build, scale, and maintain our backend systems. You will provide technical guidance and mentorship to other engineers on the team, help establish and maintain best practices for development, and participate in the development of the companys technological roadmap. Youll solve complex engineering challenges and drive engineering excellence in a dynamic environment and rapidly increasing scale.

Our ideal candidate has a real passion for making a positive change in the world, for technology and customers, has great communication skills, and loves to constantly improve themselves, our working practices, and our code base.

This is a great opportunity to join the core team of a growing, successful startup and work with the most advanced technologies.

Responsibilities:
Lead/Participate in system design and architecture discussions.
Implement and own infrastructure and features; be involved and impact the entire product lifecycle (concept, design, test, release, and production support).
Teach, mentor, grow, and provide advice to other domain experts and individual contributors.
Acquire an in-depth understanding of our technical challenges and strive to improve them.
Play a central role in technical, business, and organizational contributions.
Be a vocal advocate for technical excellence and help the team members make sound decisions.
Work with product managers, data scientists, and other team members to understand the desired requirements and provide your feedback to improve the outcome of the feature.

Join us as a Senior Backend Engineer to co-own and contribute to our open-source projects written in Python and Go. In this role, you will lead features from inception and analysis, through design, implementation, testing, and maintenance. You will also participate in product-changing architectural choices, take ownership of various components/tools, and continuously expand your skill sets. Expect to immerse yourself deeply into the Kubernetes ecosystem and explore the cutting-edge systems and technologies in this field.
Furthermore, you will acquire knowledge about multi-cloud technologies and gain valuable experience working with diverse infrastructure types, including hybrid-cloud, multi-cloud, and bare metal deployments.

Required Senior Backend Engineer- CTI
The Job
We are on an expedition to find you, someone who is passionate about developing intuitive, out-of-this-world scalable, high-performance backend system. You'll take a lead role in developing the backend infrastructure to efficiently handle, process, and store massive volumes of data. Your expertise will play a crucial part in building a scalable, high-performance backend system that serves as the foundation for other services within the platform.
Responsibilities
Be a significant part of the development of backend infrastructure to efficiently handle, process, and store vast volumes of data.
Architect and build a scalable, high-performance backend system that supports various services within the platform.
Translate intricate requirements into meticulous backend design plans, maintaining a focus on software design, code quality, and performance.
Collaborate with cross-functional teams to implement backend and data-handling techniques.
Apply your expertise to create robust backend solutions.
Leverage your proficiency in cloud platforms such as AWS, GCP, or Azure to drive strong backend engineering practices.
Demonstrate strong debugging skills, identifying issues such as race conditions and memory leaks within the backend system. Solve complex backend problems with an analytical mindset and contribute to a positive team dynamic.
Bring your excellent interpersonal skills to foster collaboration and maintain a positive attitude within the team.

Required Senior Backend Engineer - Posture
The Job
Were building the next generation of autonomous cybersecurity technology - systems that think like attackers to continuously uncover security gaps in enterprise environments.
As a Senior Engineer in our Attack Simulation Platform team, youll design and build the engines, data models, and intelligent agents that simulate advanced adversaries across large-scale networks. Youll combine strong software-engineering skills with deep security intuition to create systems that mirror human attacker behaviour and discover real weaknesses before attackers do.
Responsibilities
Develop core simulation and orchestration components in Go (primary language) and integrate with in-house AI models.
Model and simulate attack paths across complex enterprise environments (identity, endpoint, network, and cloud).
Design and build AI-driven agents that emulate adversarial behaviours such as lateral movement, privilege escalation, and persistence.
Collaborate with red-teamers, researchers, and data scientists to translate threat intelligence and real attack TTPs into executable logic.
Contribute to architecture decisions, scalability, and performance optimization for distributed simulations.

You, as our Senior Backend Engineer you will be responsible and lead the following:
Lead and take end-to-end ownership of entire product development, be part of a multidisciplinary team.
Take part in or lead architectural decisions and discussions.
Review code developed by others, and provide feedback and mentoring to ensure best practices (e.g., style guidelines, checking code in, accuracy, testability, and efficiency).
Solve complex business processes, create object models, define APIs, build web services, and more.
Triage production and system issues, prioritize, track, debug, and solve with stakeholders and other team members.
Work directly with others (engineers and other internal stakeholders) to develop a solid understanding of the business application and requirements for which the application is being designed.
Be part of building a scalable and agile R&D organization by helping define and create the right tools and processes.

We are seeking an experienced and highly skilled Senior Python Backend Developer to join our dynamic team.
You will be at the heart of our engineering efforts, responsible for designing, developing, and maintaining the high-performance, scalable, and secure cloud-based solutions that power our Fintech Compliance and Risk management products.
Working with cutting-edge technologies like Python, Node.js, and AWS, you will build innovative, low-latency, and highly available systems that form the core of our business. In this role, you will be instrumental in shaping our technical architecture and driving excellence in a fast-paced, evolving environment.
Key Responsibilities:
Architecture & Development: Lead the design and development of robust, scalable, and secure backend systems and APIs, primarily using Python.
Cloud Infrastructure: Architect, build, and maintain high-scale solutions on modern cloud platforms (specifically AWS) to ensure reliability, scalability, and performance.
System Performance: Design and implement services optimized for low-latency processing, high availability, and fault tolerance for mission-critical financial applications.
Technical Leadership: Provide technical leadership and mentorship to junior and mid-level developers, fostering best practices in code quality, testing, and maintainability.
Product Focus: Develop and enhance Compliance and Risk management products for the Fintech sector, ensuring they meet strict regulatory requirements and industry standards.
Optimization & Reliability: Take ownership of system performance, scalability, and reliability. Proactively identify and resolve bottlenecks in code and architecture.
Collaboration: Work closely with cross-functional teams, including frontend developers, DevOps engineers, and product managers, to deliver seamless end-to-end solutions.
Innovation: Stay current with emerging technologies and industry trends, driving the adoption of new tools and frameworks to solve complex challenges effectively.

We are looking for a Senior Go Developer with strong technical expertise, deep problem-solving skills, and a proactive, can-do attitude.

You're invited to meet the Mend R&D team here!

**Working in a hybrid model! ( two days from the office, three days from home. )**

What will you do?
Design and Develop scalable backend services for high-performance, distributed systems.
Troubleshoot and resolve production issues, ensuring reliability and efficiency.
Collaborate with cross-functional teams to integrate backend services into Mends security platform.

We are looking for an experienced, passionate Senior Backend Engineer to join our growing TLV R&D location.
You'll be joining the backend group to help us expand our backend system and add new features to the company's core product.
As a Senior Backend Engineer, you'll play a crucial role in driving the backend architecture and technical strategies that underpin our success. This is a great Opportunity to make a significant impact by driving the technical direction of a high-growth company.
As a Senior Backend Engineer, you will:
Build backend system from the ground up
Design and collaborate with the engineering team to build architecture and system design for new products
Build internal products and integrate with external APIs
Play a role in building, expanding, testing and releasing of a product helping thousands happy customers

We are looking for an experienced, passionate Senior Backend Engineer (Platform Team) to join our growing TLV R&D location. You'll be joining the backend group to help us expand our infrastructure and add new features to the company's core product.
As a Senior Backend Engineer in our platform team, You'll take part in our effort to improve our product, productivity, security and the ability to scale. Opportunity to make a significant impact by driving the technical direction of a high-growth company.
As a Senior Backend Engineer, you will:
Develop and maintain policies and procedures for software development, deployment, and maintenance. Monitor cloud environments using infrastructure as code methodologies
Work closely with other teams, such as development and operations, to ensure that our software applications meet the needs of the organization.
Participate actively in code reviews to uphold high standards of quality and maintainability in software development
Work collaboratively with product teams to design and implement new cloud services and workflows, contributing to the continuous improvement of our platform
Stay up-to-date with emerging trends and technologies in Cloud, and assess their potential impact on our organization

Were looking for a talented Backend Engineer to join our fast growing R&D team.
This role is full-time and is based in Herzliya, Israel.
Responsibilities
Architect and implement resilient, high-performance backend services for our cloud-native cybersecurity platform.
Enhance data flows and scale integrations with automotive data systems.
Collaborate with a multidisciplinary team to build secure, flexible solutions.
Willingness and ability to learn new technologies and adapt to ongoing changes.

Were looking for a talented Backend Engineer to join our fast growing R&D team.
This role is full-time and is based in Herzliya, Israel.
Responsibilities
Architect and implement resilient, high-performance backend services for our cloud-native cybersecurity platform.
Enhance data flows and scale integrations with automotive data systems.
Collaborate with a multidisciplinary team to build secure, flexible solutions.
Willingness and ability to learn new technologies and adapt to ongoing changes.

We're looking for a Senior Backend Engineer to join the Acquisition team, as part of the Data Group.
In this role, youll play a key part in designing, developing, and maintaining our data gateway, integrating new data sources into our system, and tackling challenges related to scale, efficiency, and cost-effectiveness.
Youll also help research and define solutions to complex technical problems as continues to innovate in the SaaS security space.
Tech stack: AWS, Kubernetes, Python, Postgres, Redis, Rabbit, Kafka, Date-Lake.

Required Senior Backend Engineer, Audience Extension
Realize your potential by joining the leading performance-driven advertising company!
As a Senior Backend Engineer in the Audience Extension team in our Tel-Aviv Office, youll be instrumental in building and optimizing our core infrastructure for managing RTB requests at scale, one of the biggest revenue driven operations in the company.
How youll make an impact:
As an Experienced Backend Engineer, youll bring value by:
Develop one of the largest real time big data operation in the world to support over 40TB of new data every day
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 hundreds of thousands of requests per second
Work on innovative projects that are the next growth engines for us
Here are some of the things software developers in our group did in the last several months:
A unique data pipeline for managing RTB requests at scale
An algorithmic model to predict if a given Real-Time impression is valuable to us
A smart gateway that ingests hundreds of thousands of requests per second for a single instance
An A/B tests system to explore variations and experiments
And many more
Our Tech Stack:
Java, Spark, Kafka, Hadoop, Cassandra, Vertica, MySQL, HDFS, BigQuery, Docker, Linux, Kubernetes, Prometheus, Grafana, Airflow.