לוח משרות דרושים Senior Backend Developer

Required Senior Backend Scala Developer
The opportunity
Join our team working on an advanced ad-serving platform that powers millions of real-time interactions every second. As a Senior Backend Developer, youll play a key role in designing, developing, and maintaining a high-performance system that supports critical functionalities like targeting, attribution, budget management, and data pipelines for machine learning and reporting.Youll be expected to lead impactful projects, drive improvements in performance, scalability, and system reliability, and help shape solutions that directly influence the success of a globally recognized platform. We value bottom-up initiatives and encourage team members to bring their ideas to the table, fostering innovation and collaboration.
Why You'll Love This Role:
Take ownership of major projects and core features with significant business impact.
Work alongside skilled engineers in a fast-paced, high-scale environment.
Tackle challenging technical problems using cutting-edge tools like Kafka and Aerospike.
What you'll be doing
Design, develop, and monitor new features for the platform, including components supporting targeting, attribution, and budget management.
Maintain and optimize the performance of critical backend systems.
Refactor and improve legacy code to ensure scalability and efficiency.
Lead efforts to guarantee system reliability and low latency in a high-concurrency environment.
Collaborate with peers and across teams to deliver high-quality, production-ready solutions.

we are looking for a Senior Backend Engineer
What You'll Do:

Your Mission. Design, develop, and execute features from concept to production that will have a huge business impact on the core products at OpenWeb.
High Impact. Ramp up the technical level of your team and cross-backend engineers, raising the overall engineering quality across the organization.
Own your mission. Develop high-priority projects that contribute to making OpenWebs products the most scalable, high-velocity solutions on the market.
Lead. As part of a team developing a complex micro-services backend architecture, you'll work with the team and lead us towards solutions for large-scale challenges.
Dream Team. You'll join an agile dev squad of engineers who are all highly talented, very collaborative and excited to hear your opinion.
You will report to the Engineering Team Lead.

Required Principal Backend Engineer, Platform Foundations
What Youll Do:
Youll be part of the group responsible for our main products. You will impact the work of developers in the group by designing, building and maintaining the core infrastructure of our solution and leading the research and development of new technologies as well as maintaining code standards and practices.
What does the day to day of Infrastructure Engineer look like:
You will be working on our core B2B platform that serves tens of thousands of customers, serving hundreds of terabytes in production. Our backend engineers are responsible for the entire data lifecycle - from our endless datatlakes, through choosing the right serving methods and databases, all the way to our api services.
Your role will include:
Design and implement scalable backend services and libraries that are reusable and maintainable, serving as the foundation for various applications across the company.
Build and maintain tools that streamline development workflows, enabling product teams to focus on delivering business value.
Define and promote best practices for code quality, performance, and reliability, ensuring healthy production environments and rapid development cycles.
Lead the adoption and integration of AI tools to assist in code generation, testing, documentation, and debugging, thereby accelerating development processes.
Perform proof-of-concepts (POCs) on emerging technologies, including AI agents and platforms, to assess their applicability and benefits to our development ecosystem.
Drive cross-team technical projects aimed at improving infrastructure scalability, reliability, and developer experience.
Analyze and resolve complex production issues, ensuring minimal downtime and optimal performance.
Contribute to the evolution of our system architecture, ensuring it supports rapid development and scaling needs.

Our Group specializes in providing comprehensive solutions for investing and trading across global markets, with a strong focus on the U.S. stock exchange. Established in 2010 in Cyprus, we are part of the group and provides advanced brokerage and trading services on Equities, CFDs, FX, and Crypto.
We are expanding our R&D team in Tel Aviv and looking for a talented Back-End Developer to join us.
This is a great opportunity to work in a dynamic FinTech environment, with cutting-edge technologies, and to make a real impact.
What youll do:
* Design, develop, and maintain scalable back-end systems.
* Build and optimize RESTful APIs.
* Work closely with cross-functional teams in a fast-paced, innovative environment.

Realize your potential by joining the leading performance-driven advertising company!
As an Experienced 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 our company
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 our company
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.

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.

As a Senior Backend Engineer, you will be a key contributor in designing, implementing, and optimizing our Backend Engine and application infrastructure. You will collaborate with other team members to ensure our applications are cloud-ready, scalable, and secure enabling us to stay at the forefront of our industry. You will get a chance to work on a variety of technologies, in a dynamic and fast paced environment.

Responsibilities
Collaborate with cross-functional teams to design, develop, and deploy robust and scalable features for our cutting-edge data analytics platform.
Architect, implement, and optimize backend solutions using Python to ensure seamless data processing, storage, and retrieval.
Collaborate closely with product managers, data scientists, tech-leads to understand requirements, provide technical insights, and deliver high-quality solutions.
Continuously enhance the performance, scalability, and security of the platform and backend services through code reviews, testing, and optimization.
Stay up-to-date with industry trends and emerging technologies; proactively recommending and implementing improvements to enhance the platforms capabilities.

We are seeking an experienced Senior Backend Engineer to join our Data Services team. The Data Services team manages, provides and processes the large volumes of data, used by our Scientists and customers.

In this role, you will be responsible for building new cloud and on-prem data systems and infrastructure, as well as maintaining, improving, and enhancing serving systems, in order to provide highly usable, robust, and efficient data services.

Responsibilities:
Participate in the development of state-of-the-art auto-driving systems by managing the data required for training and validation.
Build efficient services to manage and provision large quantities of visual and other types of data.
Design, develop, and implement robust cloud and on-prem services.
Contribute to the selection and utilization of new AI technologies, databases, and third-party services.

We are building a purpose-driven digital marketplace that helps people find the homes, cars, and services they truly need faster, smarter, and more intuitively. We're seeking a passionate and experienced Senior backend Developer to join our team.

As a Senior Backend Developer in the team, you will be part of a high-impact team responsible for building scalable infrastructure, optimizing performance, and integrating with external systems. Youll work on complex backend features, contribute to architectural decisions, and help shape the future of Earnixs data platform.


What Youll Do:

Design and implement backend features for large-scale data operations, including cache management, and performance optimization.

Contribute to the design and development of a new computation system, built to support scalable, high-performance data processing across Earnixs platform.

Build infrastructure components that support scale, reliability, and maintainability across cloud environments.

Collaborate with architects and initiative leads to ensure backend solutions are consistent with company-wide architecture and support long-term scalability and maintainability.

Participate in design discussions, code reviews, retrospective meetings, and sprint planning.

Develop unit and integration tests to ensure high-quality, production-ready code.

Investigate and resolve complex bugs related to data processing, distributed systems, and cloud infrastructure.

Mentor junior developers and promote best practices across the team.

We are looking for an experienced senior backend developer for a new project intended to create and build a new platform for the next generation of cutting-edge software, based on a modern platform to enable innovations and integration of different software and technologies.


As a senior developer, you will lead the creation of this new platform. You will lead brainstorming and discussions along with Product to build this new Platform. Also, taking part in the team building as well as delivering new features, and building the infrastructure for the new SaaS.

This role is ideal for a highly skilled and talented backend developer who wants to be a visionary, is passionate about building scalable and reliable products from scratch, and thrives in a fast-paced, innovative environment.


What youll do:

Participate in designing and building the architecture of the new product.

Take ownership of parts of the new platform infrastructure building.

Define and implement POCs for new technologies and tools.

Implement features and new technologies integrations following POCs.

Take part of design and code reviews.

Take part to set the standards of end-to-end automation development.

We are looking for a Staff Data Engineer to join our Platform group as part of the Data Infrastructure team. This is a senior individual contributor role for someone who combines deep technical expertise with a passion for building scalable, high-impact data infrastructure.
In this role, you will take ownership of designing, implementing, and evolving the data systems that power data orchestration, distributed storage, and streaming capabilities - with a focus on architecture, reliability, and performance. Youll collaborate across teams, influence engineering best practices, and help scale our infrastructure to support growing data needs across the organization.

we are looking for a highly skilled Senior Back-End Java Developer to join our core development team and help drive the architecture and scalability of our server-side systems. This is a high-impact role where youll design and build sophisticated, cloud-native microservices powering mission-critical functionality for our fintech platform.

Youll work in close collaboration with cross-functional teamsincluding front-end developers, DevOps engineers, product managers, and QAto deliver enterprise-grade software thats scalable, secure, and built to last.

RESPONSIBILITIES
Design & Develop at Scale

Design, develop, and maintain robust and high-performance Java applications and distributed services.

Build and optimize scalable RESTful APIs and microservice-based architectures that power our platform.

Lead Engineering Excellence

Guide the adoption of best practices in design, development, testing, and deployment across the backend stack.

Conduct code reviews and mentor team members, helping to raise the technical bar across the team.

Own End-to-End Delivery

Collaborate with front-end, DevOps, and product teams to turn complex requirements into reliable solutions.

Take ownership of performance, availability, and observability of backend components in a high-scale environment.

Secure & Optimize

Implement security best practices, caching strategies, and performance tuning for robust, real-time systems.

Troubleshoot and resolve critical production issues with speed and precision.

our company has been redefining computer graphics, PC gaming, and accelerated computing for more than 25 years. Its an outstanding legacy of innovation thats motivated by extraordinary technology and amazing people. we are looking for an experienced Python Backend Developer to join our Air team the Digital Twin for Data Center Simulation web application.
As a Backend Python Developer, you will be responsible for designing, developing, and maintaining our web applications. This position offers the opportunity to have a real impact in an influential, technology-focused company impacting product lines that power the most advanced data centers in the world. We have crafted a team of outstanding people, whose mission is to push the frontiers of what is possible today and define the platform for the future of data center simulation and design.
What you'll be doing:
Collaborate with the development team to design and develop web applications using Python and Django framework.
Write clean, efficient, and maintainable code that adheres to industry standards.
Participate in code reviews and provide constructive feedback to ensure code quality.
Perform unit testing and debugging to identify and fix issues.
Work closely with product manager and architect teams to gather requirements, translate them into technical solutions, and deliver high-quality and scalable solutions.