דרושים » תוכנה » Senior Backend Engineer

Were looking for a Senior Backend Infrastructure Engineer (or Tech Lead, for the right candidate) to join our core infrastructure team. This role is all about building and evolving scalable, high-performance backend systems that serve as the foundation for all our product engineering teams.
Youll be responsible for designing and developing distributed systems, owning critical backend infrastructure services, and working closely with architects, DevOps, and product engineers to ensure our platform is reliable, efficient, and future-proof.
Why join us?
we are one of the worlds fastest-growing fintech companies. We free finance professionals to lead by modernizing the entire payables operation. We are a well-funded, late-stage start-up backed by high-profile investors. Our 2021 Series F funding round raised $270 million, valuing us at over $8.3 billion. With total funding of just over $550 million, and with more than 5000 global customers, we are one of the most valuable private fintech companies in the world.
At our company, we pride ourselves on our collaborative culture, the quality of our product and the capabilities of our people. our workers are passionate about the work they do, and keen to get the job done. our company offers competitive benefits, a flexible workplace, career coaching, and an environment where diverse individuals can thrive and make an impact. Our culture ensures everyone checks their egos at the door and stands ready to reach for success together.
Founded in Israel in 2010, we are a global business headquartered in the San Francisco Bay Area (Foster City) with offices in Tel Aviv, Plano, Toronto, Vancouver, London, Amsterdam and Tbilisi.
In this role, you will be responsible for:
Designing, developing, and maintaining scalable infrastructure services and middleware in a distributed microservices environment.
Leading cross-team backend infrastructure initiatives that impact the entire R&D organization.
Building robust systems that support our product teams with high availability, observability, and fault tolerance.
Partnering closely with architects, DevOps, and backend engineers to define and implement best practices across the stack.
Driving performance improvements and architectural evolution with a long-term vision in mind.
Proactively identifying technical gaps and areas for optimization across our backend infrastructure.

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.

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 capabilitie

we are revolutionizing the way businesses interact with the digital world by revealing to them everything that happens online.
Our unique data and solutions empower over 4,300 customers globally, including industry giants like Google, eBay, and Adidas, to make game-changing decisions that drive their digital strategies.
In 2021, we went public on the New York Stock Exchange, and we continue to reach new heights! Come work alongside across the globe who are bright, curious, practical and good people.
Were looking for an Experienced Backend/Data Engineer to take an important part in data extraction team and play a key role in our growing data acquisition operation.
This role will report to Team manager- R&D.
Why is this role so important ?
a data-focused company, and data is the heart of our business. As a data server engineer, you will work in one of the companys core teams and design and implement complex, high-scale systems that retrieve and analyze data from around the internet.
Backend engineers on Data-Extraction are responsible for
Scraping - Building and maintaining high scale web-scraping operations.
Processing - Creating complex data pipelines that process and enrich our raw data and serve it to different consumers through various databases and data-lakes.
Engineering - Designing and building large scale, high quality systems to support our data infrastructure and production systems
As a Data-Server Engineer in Data Extraction you will:
Write complex PySpark applications that process, manipulate and validate large datasets, in high quality and under strict SLA.
Develop dockerized high performance microservices.
Take a major part in designing and implementing complex high scale systems using a large variety of technologies.
Work in a team with talented and independent engineers with whom youll be able to share knowledge and expertise.
learn new technologies, handle a multitude of systems.
Implement solutions in AWS cloud environment.
Take part in monitoring and debugging data pipelines and high scale services in order to identify and fix bottlenecks and failures.

powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
We are seeking an experienced Backend Tech Lead to join our recommendations group. As a Tech Lead, you will be instrumental in shaping the technical direction and architecture of our backend systems. You will leverage your deep expertise in backend technologies to design, build and scale backend services while guiding a group of engineers toward delivering robust, high-performance solutions. This role offers the opportunity to collaborate with cross-functional teams and contribute to projects that impact the entire organization. If you're a leader with a passion for backend development, we would love to have you on board!

As a Backend Tech Lead, your responsibilities will include:
Mentoring and guiding backend engineers to ensure high-quality code and effective development processes.
System design and architecture: Designing scalable, efficient, and secure backend systems, including APIs and data storage solutions, using technologies like Python, MySQL, Redis and Elasticsearch.
Tech stack evolution: Driving improvements in backend technologies, frameworks and development practices.
Cross-functional collaboration: Working closely with product managers, frontend teams and other stakeholders to ensure backend services meet business requirements and technical specifications.
Performance and scalability: Ensuring that our backend services are highly available, scalable and optimized for performance.
Cloud infrastructure: Overseeing cloud services and ensuring backend systems are seamlessly integrated with cloud platforms.
Code quality and best practices: Writing and maintaining clean, maintainable and well-documented code, while fostering a culture of code reviews, continuous improvement and adherence to best practices.
Technical leadership: Owning the technical direction of backend systems, making key architectural decisions and promoting industry best practices within the group.

We are looking for a Sr. Backend Engineer.
Responsibilities:
Join a team of highly motivated developers to work together to fill growing software and scaling needs
Work on our cutting-edge Security SaaS product that redefines risk management and helps SMBs stay protected.
Directly work on matters that are critical to the company, building security product that is actively used by 10,000+ users, while tackling complex and challenging engineering problems
Writing well-tested, organized and robust code to support a rapidly growing organisation
Work in a modern software environment with continuously deployed and integrated code in our cloud-based infrastructure
Taking responsibility of your code, quickly responding to bugs and making sure new and existing software runs smoothly
Youll work closely with product managers, designers, QA experts, architects, and experienced developers to build cutting-edge solutions.

We're looking for a skilled Senior Backend Engineer to join our team and contribute to our Cortex Cloud platform.
As a Senior Backend Engineer, you'll have a high-impact role in shaping the future of our code security products. Beyond building robust and scalable backend features, you'll help drive performance, reliability, and innovation across our systems. Our team leads the way in owning both the departments core infrastructure and Developer Experience (DevEx), empowering the entire engineering organization with powerful internal platforms and tooling. If you're excited by technical challenges, meaningful ownership, and making life easier for developers this is the place for you.
Your Impact:
Feature Development: Design, build, and maintain robust backend services using TypeScript/Node.js. Take full ownership of complex, cross-system features from initial requirements through architecture, implementation, and deployment.
Build and Optimize Scalable Systems: Ensure performance, reliability, and cost-efficiency across distributed systems through thoughtful design, deep observability, and continuous optimization.
Platform Engineering & DevEx: Drive platform engineering initiatives by developing the department infrastructure and shared tooling that boost scalability, reliability, and the developer experience across the department.
Own Core Infrastructure: Design, operate, and evolve the departments infrastructure stack including BigQuery, MongoDB, Redis, and Argo Workflows using cloud-native technologies like Terraform, Kubernetes, and Helm.

we are the leader in Behavioral Biometrics, a technology that leverages machine learning to analyze an online users physical and cognitive digital behavior to protect individuals online. our companys mission is to unlock the power of behavior and deliver actionable insights to create a digital world where identity, trust, and ease coexist.Today, 34 of the world's largest 100 banks and 210 total financial institutions rely on our companyConnect to combat fraud, facilitate digital transformation, and grow customer relationships.. our companys Client Innovation Board, an industry-led initiative including American Express, Barclays, Citi Ventures, and National Australia Bank, helps our companyto identify creative and cutting-edge ways to leverage the unique attributes of behavior for fraud prevention. With over a decade of analyzing data, more than 80 registered patents, and unparalleled experience, our companycontinues to innovate to solve tomorrows problems.
Are you an experienced backend developer with a passion for cutting-edge technology? Do you have an interest or background in machine learning, data science, or working with models? we are looking for a backend developer to join a newly formed team and help build core services from the ground up.
As a backend developer at our company, you will work with a team of highly curious and innovative professionals. You will be responsible for developing core services and APIs that handle high volumes of real-time traffic and meet strict SLA response times. Your role will involve complex data processing, aggregation, and research of big data.
While experience in ML/DS is not a requirement, familiarity with ML-based architectures, model deployment, or data-driven decision-making will be considered a strong advantage.

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 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.