דרושים » תוכנה » Senior Backend Developer

Were looking for passionate individuals who thrive in collaborative environments and are eager to drive impact. If youre excited about solving complex challenges in bold, innovative ways, wed love to connect with you.

What are we looking for?
Our team is responsible for Endpoint Protection services, and covers end-to-end from agent to backend to frontend the following areas:
Building services that process traffic between our Agent (which is responsible for protection across all kinds of OS - Windows, Linux, macOS) and our cloud-based Management console
Developing a big part of backend of this Management console itself (which is in short a large-scale distributed system, a complex "control application" used by IT security teams of S1 clients - that can be seen in many S1 vs. Ransomware demos) and the management of the "fleet" of agents deployed on endpoints in client's environments (backends written in Python and Go and deployed in Kubernetes)
Were a team with a significant impact on how our customers environments are protected, and how they interact with agents. As a core team at S1, we're heavily involved in every end-to-end effort, features development and are key contributors to the design and build of the right architecture of S1's cybersecurity solution to match the scale & hyper-growth of our business.

What will you do?
Design, develop, and support robust backend system our main product line - Endpoint Protection
Feature Design and Documentation: Take ownership of designing new features and creating documentation.
Database Schema Design: Design efficient database schemas to support new and existing features.
Backend Service Development: Develop and maintain backend services using Go and Python. Create RESTful APIs to facilitate seamless interaction between the backend, front-end, and other systems.
Integration: Integrate with various cloud services (AWS, GCP), databases (Postgres, MongoDB), messaging systems (Kafka), and caching solutions (Redis) to enhance system functionality and performance.
Feature Support and Validation: Provide support during the feature validation cycle, ensuring smooth deployment to production environments.
Performance Optimization: Optimize system performance and scalability to manage demanding workloads effectively.
Requirement Translation: Understand product requirements and translate them into technical solutions.
Cross-Team Collaboration: Work closely with product, validation, and front-end engineering teams to deliver and maintain high-quality features.
Customer Communication: Communicate with customer care and support teams to address issues.
Code Quality and Maintenance: Write clean, maintainable code. Stay up-to-date with the latest advancements in backend technologies and security best practices.
Innovation and Creativity: Bring creativity to the table. Explore new solutions and technologies to improve our product continuously.

Required Senior Backend Engineer User Data
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 us
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 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.

We are building our next-generation, cloud-based data pipeline and are looking for a strong backend software engineer. This engineer should be excited about building systems from scratch, love to take an active role, and be able to quickly dive into complex, large-scale environments and lead them.

By joining this team, you will, among other products, help develop the following products:

Network Discovery: A product that delivers full visibility into every device on a corporate network. Customers can manage any asset, including those not yet protected or supported by us, thanks to machine learning that automatically identifies all IoT devices.
Vulnerability Management: A platform module that enables customers to analyze and prioritize the vulnerabilities detected by our cybersecurity solutions on their endpoints.

What will you Do?
Own features end-to-end - Join a cross-disciplinary squad of backend and frontend engineers working alongside Windows, Linux, and macOS endpoint specialists - taking ideas from whiteboard to production.
Build customer-facing security insights - Design, implement, test, and deploy backend services that turn raw cybersecurity events into clear, actionable information.
Shape our platforms architecture - Lead the design of new modules across several strategic product lines, choosing patterns and technologies for scale, reliability, and performance.
See your impact - Your work directly improves how customers understand risk and respond, making it a visible part of key company initiatives.

We are looking for an outstanding and passionate Senior Backend Engineer to join a rapidly growing team. We work in a fast-paced environment, building a content discovery platform used by millions of users. The service enables unique content discovery experiences allowing users to access and find their favorite content in a simple and accessible way. Our team uses the most up-to-date technologies to build a scalable and resilient product that is growing at a high pace. This is a great opportunity for those looking to make a huge impact on a technically challenging product with a huge audience. We value team players with technical excellence and a sense of ownership who know how to choose the right tool for the right task.
What you'll be doing
Design, develop, test, deploy, maintain, and enhance large-scale software solutions.
Write clean, highly scalable, and top-quality code that sets industry standards.
Work closely with the Product, Architects, DevOps, and BI.
Continuously learn and stay up to date with emerging trends and technologies in the industry.
Drive innovation by researching and implementing new technologies and best practices within the development team.

We are seeking a talented backend engineer to join our growing team, owning our innovative product, Code Defender. Code Defenders mission is to detect and protect against client-side threats and enable our customers to be compliant with the latest security and privacy standards.
As a member of the team, you will play a crucial role in ensuring the product's success, by designing and developing advanced features, handling large-scale data, aggregations, while utilizing cutting edge technologies.
Collaboration with cross-functional teams including Platform, Product, Engineering, and Research will be integral as you lead feature development from inception through to deployment, applying backend methodologies and best practices.
What you'll do:
Develop cloud-based high-scale systems: Leverage the latest in cloud technology to build systems that can handle the demands of significantly large datasets with efficiency and reliability.
E2E Ownership: Take full responsibility for projects from the initial design and architecture stages through to implementation and rollout,
Innovate and Optimize Operations: Continuously seek out and implement innovations and optimizations to improve the performance and scalability of our systems.
Tackle challenging problems and find creative ways to solve them.
Participate in cross organization engineering innovation forums and technical guilds.
Collaborate on cross-functional teams: Work closely with other technical and research teams to integrate various products seamlessly, ensuring cohesive technology solutions across the board.
Ensure System Security and Compliance: Prioritize the security of our systems and ensure compliance with all relevant data protection regulations.
Performance Monitoring and Troubleshooting: Regularly monitor system performance, identify and resolve any issues to maintain optimal operation.
Work on cutting-edge technologies in coding, data persistence, CI/CD pipelines, and data pipelines. This includes expertise in any of the common backend development languages, SQL and NoSQL databases like MongoDB and Redis, messaging systems such as Kafka, search technologies like Elastic, and cloud services.

We are looking for a Senior Backend Engineer to join our R&D team and play a pivotal role in building our multi-cloud scanning system. This position is ideal for engineers who excel in solving large-scale challenges within a fast-paced startup setting, and who are passionate about pushing the boundaries of data security in a cloud environment.

Responsibilities:
Lead the design and development of our cloud scanning orchestration system, ensuring efficiency and scalability across multiple cloud environments.
Handle multiple system interactions, working with microservices and cloud-native components to build a robust and flexible scanning solution.
Research various Data sources APIs in order to develop connectors and perform efficient data scanning. Develop and implement efficient data scanning connectors by researching the APIs of various data sources.
Collaborate closely with cross-functional teams, including R&D engineers, product managers, and solution engineers, to deliver end-to-end features and tackle complex engineering challenges.
Gain a high-level architectural perspective while maintaining the ability to dig into technical specifics and optimize system performance.

Growing at an amazing speed in the hottest SaaS category of our generation,We’re on a mission to revolutionize how marketers, writers, and innovators create their marketing content. Anyword is creating the world’s leading GenAI content performance platform, based on 10 years of experience working with the biggest publishers and brands globally. With tools like ChatGPT and Gemini taking the world by storm, it’s clear that the spotlight is now shining on the Generative AI space. However, its ultimate hurdle is now a self-compounding problem: with infinite options for messaging now available to all marketers… How do we know what will actually work? We’ve built the brain behind all marketing messaging, no matter where it lives and how you create it (with AI or not). And now we’re looking to you to help change the world with us! We’re a team of doers from all walks of life who share a passion for AI and innovation. We believe in personal growth, care deeply about our work, and aspire to be world-class in everything we do. The Opportunity We are looking for a Senior Backend Engineer to design, build, and scale mission-critical services and APIs. In this role, you will take full ownership of systems that directly impact the company’s success and reliability. You’ll collaborate closely with data scientists, product managers, and customer success managers in a dynamic, agile environment—helping shape not only our product but also the infrastructure that powers it. With your technical expertise and enthusiasm for building robust, creative systems, you’ll play a key role in revolutionizing how marketing and sales communications are done. Responsibilities Design, implement, and maintain backend architecture for a growing SaaS product.
* Build APIs and background services, including:
* Integrations with external platforms.
* Scraping and analyzing content from the web.
* Integrations with internal machine learning services.
* APIs exposed to external customers at scale. Ensure system reliability, scalability, and performance , including monitoring, alerting, and troubleshooting.
* Contribute to infrastructure and DevOps practices , including CI/CD pipelines, container orchestration, and cloud operations.
* Take ownership of features from idea to production, ensuring smooth delivery.
* Collaborate with product managers and stakeholders to refine requirements into scalable solutions. Mentor junior engineers and contribute to improving engineering standards and practices. Qualifications 7+ years of industry experience in backend engineering, including maintaining production web systems. 5+ years of hands-on experience with Python, Node, Go, or Ruby in Linux environments.
* Strong knowledge of both relational and non-relational databases
* Proven experience with AWS (or another major cloud provider)
* Solid background with Docker, Kubernetes, and distributed systems at scale
* Experience with monitoring, logging, and performance optimization
* Familiarity with infrastructure-as-code tools (e.g., Terraform, CloudFormation) is a plus.
* Ability to write clean, maintainable code and continuously improve existing systems.
* A passion for solving complex problems and delivering customer value.
* Effective written and verbal communication skills, with the ability to work both autonomously and as part of a team.

We are looking for an experienced Senior Engineer to join our Billing Platform team.

Our Billing Platform is the backbone of every product we launch and every key deal we close. You will play a critical role in shaping the infrastructure that drives our billing processes, directly impacting our revenue and growth.

As we continue to scale and introduce new products, were looking for passionate engineers who are eager to take ownership of complex systems and make a significant impact.

If you're excited about designing and building robust, scalable systems, wed love for you to join us in shaping the future of our Billing infrastructure.

What you'll be doing:
Design, build, and maintain scalable and resilient systems that handle high-volume data, while collaborating with teammates and individual contributors.
Take ownership of projects, from concept to production, ensuring the highest quality.
Work on data-driven initiatives that improve system performance, efficiency, and billing accuracy.
Work with Product Managers to define features and scope, guiding technical decisions and trade-offs, to align with company goals.
Collaborate in an environment involving various stakeholders within the company.
Help foster best practices and mentor team members to maintain a high standard of engineering excellence.

We are seeking an experienced Backend Developer with a minimum of 5-6 years of hands-on experience to join our development team. As a Backend Developer, you will be responsible for designing, developing, and maintaining robust solutions for our suite of products, as part of the team responsible for the heart of our technology stack. You will work with cutting-edge technologies, including Node.js, Nest.js, TypeScript, PostgreSQL, and AWS services.

Responsibilities:
Design, develop, and deploy scalable and high-performance backend solutions to support our web and mobile applications.
Write clean, maintainable, and well-documented code in TypeScript, following best practices and design patterns.
Implement and maintain database schemas, queries, and optimizations using PostgreSQL.
Perform code reviews, troubleshoot issues, and provide technical support to ensure the reliability and performance of backend systems.
Collaborate closely with the product team, FE developers, QA engineers, and other stakeholders to understand requirements and translate them into technical specifications and implementation plans.