דרושים » תוכנה » Backend Engineer - Payments Charges Team

Required xEngineer
the company makes it possible for anyone to succeed online. since 2006, weve grown to 5,000 employees in 17 countries, launched over 40 products, and serve over 230 million users and their visitors worldwide. here, we push you to innovate, evolve in non-traditional ways, and grow outside your comfort zone. we operate in small teams that work closely together to create incredible things. although were already industry leaders in web creation and business, our work is nowhere near done. our goal is to become the main engine of the internet so we can create a more open web for all. we believe solving complex problems starts by building strong infrastructure and platforms supported by engineers working with cutting-edge technology. as a dev-centric company, we rely on testing, implementing smart feedback loops, measuring impact, and using fail fast methodologies to keep our high-scale traffic and advanced products in constant progress with a 99.99% uptime.
as a backend xengineer, youll design and own the core systems that impact millions of users, working with an ai-native focus to craft high-performance backend architectures and scalable, reliable platforms. in your day-to-day, you will:
design and own end-to-end backend systems and features that impact millions of users
focus on backend architecture and system design, making thoughtful trade-offs around scalability, reliability, security, and maintainability
take full ownership from data models and apis to production systems and distributed architectures
use ai as an integral part of your daily work-for planning, design, execution and production, while ensuring ai-assisted outputs meet the highest production standards
work with modern technologies (e.g., JAVA, scala, Node.js, cloud, and ci/cd) while continuously evolving your toolkit with ai-powered tools
collaborate closely with product managers, designers, and engineers to shape solutions while ensuring production quality, observability, and long-term system health
here, we believe our best work happens together. our work model is fully in person, with 5 days a week from our office. flexibility remains a core value at the company and special requests are handled thoughtfully at the team level.
we are the company's backend xengineering group - a team of xengineers who specialize in backend development. we provide integrated tools for microservice development to improve Developer productivity and best practices. as xengineer, we use ai-native workflows that allow us to concentrate on what truly requires human judgment: system architecture, security, and scalability. to handle high-scale traffic, our team runs production across distributed data centers worldwide. we take complete ownership of our systems, and maintain the deep expertise required to manage a global engine of the internet.

We are looking for an experienced Full-Stack Engineer with strong backend expertise to join our growing Sales R&D team in Tel Aviv. This is a backend-leaning role focused on building and maintaining high-performance systems while contributing across full-stack services. As part of our team, youll drive the evolution of our Sales platform, take end-to-end ownership of impactful features, and contribute to an AI-first engineering culture that embraces automation, intelligent tooling, and continuous improvement. You will play a key role in improving product quality, engineering productivity, and system reliability as we support rapid business growth.
Responsibilities:
Design and deliver end-to-end features across backend services and frontend applications, with strong emphasis on backend architecture, data integrity, and system reliability.
Develop and maintain SPA web applications for admin and product platforms using React + TypeScript and Next.js, including contributing to the modernization of legacy Ruby components.
Develop and maintain backend services across Python (FastAPI) and Node.js (NestJS) microservices, ensuring strong performance, robust data management, and ongoing modernization efforts.
Design, implement, and maintain reliable REST APIs with clear contracts, validation, and consistent error handling.
Work with complex relational data models, continuously improving query performance and data reliability.
Lead investigations and root-cause analysis for performance, optimization, and production-related issues, driving long-term improvements.
Collaborate closely with frontend, backend, QA, and product teams in a multi-repo environment, including active code reviews and cross-site collaboration with our Boston engineering team.
Take ownership of code quality and production stability by writing automated tests (e.g., pytest, Jest) and driving issues from investigation through resolution and prevention.

Appdome’s mission is to protect every mobile app in the world and the people who use mobile apps in their lives and at work.
Appdome provides mobile brands with the only patented, centralized, data-driven Mobile Cyber Defense Automation platform, delivering rapid no-code, no-SDK mobile app security, anti-fraud, anti-malware, anti-cheat, anti-bot implementations, configuration as code ease, Threat-Events™ threat-aware UI/UX control, ThreatScope™ Mobile XDR, and Certified Secure™ DevSecOps Certification in one integrated system.
With Appdome, mobile developers, cyber and fraud teams can accelerate delivery, guarantee compliance, and leverage automation to build, test, release, and monitor the full range of cyber, anti-fraud, and other defenses needed in mobile apps from inside mobile DevOps and CI/CD pipeline.
Leading financial, healthcare, m-commerce, consumer, and B2B brands use Appdome to upgrade mobile DevSecOps and protect Android & iOS apps, mobile customers, and mobile businesses globally. Today, Appdome's customers use their platform to secure over 50,000+ mobile apps with protection of over 1B mobile end users projected.
We are seeking a driven and results-oriented Account Executive to join our team. In this role, you will focus on acquiring new customers, building trusted relationships, and driving revenue growth by understanding prospects’ mobile business and security objectives and aligning them with our solutions.
The ideal candidate is a proactive communicator with strong interpersonal skills and a solid technical foundation. You excel at managing complex enterprise sales cycles and thrive in a dynamic environment that demands collaboration across teams and effective engagement with stakeholders via phone, email, and in-person interactions.
About the Role We're looking for a Backend Engineer to own the core logic behind our fraud management APIs - building systems that make real-time risk decisions at scale. You'll leverage Appdome's extensive threat visibility and historic data to outsmart fraudsters and protect millions of users worldwide.
What You'll Do
* Own the business logic of fraud management APIs and the risk assessment & profile builder algorithms.
* Design, develop, and maintain systems that make split-second decisions, balancing security with customer experience.
* Leverage Appdome's threat data to continuously enhance the fidelity of risk evaluation.
* Ensure the system meets required accuracy and performance metrics as threats evolve and volumes grow.
* Collaborate with product management, data engineering, and DevOps teams to evolve detection capabilities

We are looking for a Backend Engineer to develop mission‑critical services and APIs. You will help design, build, and operate systems that directly affect the companys success. To achieve that, you will collaborate with data scientists, product managers, and customer success managers in a dynamic agile environment.
With your technical expertise and enthusiasm for building creative products, you can have a direct influence on our companys success. Come join us in revolutionizing the way marketing and sales communications are done!
Responsibilities:
Handle backend tasks for a growing SaaS product; design and implement architecture, along with maintenance and monitoring.
Take ownership over features end‑to‑end.
Collaborate with product managers to refine product requirements.
Work closely with peers and share knowledge across the team.
Build APIs and background services, including:
Integrating with external platforms
Scraping and analyzing content from the web
Integrating with internal machine learning services
Building APIs to be used by external customers.

We are seeking a Senior Backend Engineer - Data Platform to join our expanding team and play a crucial role in designing, building, and maintaining robust and scalable data pipelines and infrastructure. In this role, you will directly enable data-driven decision-making and support the development and deployment of AI/ML products that power Health.

Youll collaborate closely with engineering, product, and data science teams to ensure our data systems are high-quality, resilient, and scalable as we grow. As a Senior Backend Engineer on our Data Platform team, you will drive efforts to deliver reliable, efficient, and consistent data services across the organization. You will also help enable the rapid development and deployment of advanced features, insights, and AI-driven capabilities that improve outcomes for clinicians and clients.

Who are you?
You are a seasoned backend or data engineer with experience working on production-grade ML/AI-powered products. You thrive in fast-paced, high-ownership environments and are passionate about building scalable and reliable systems. You understand the unique requirements of delivering AI/ML features in production, and you are comfortable working with modern technologies in the LLM/RAG ecosystem.
You pride yourself on delivering high-quality solutions quickly, without sacrificing design or reliability. Youre known for your responsiveness, collaborative spirit, and service-oriented mindset-especially when youre on-call and the stakes are high.How will you contribute?
Design, implement, and maintain scalable and reliable data pipelines and backend systems supporting both operational and analytical needs, with a focus on ML/AI product enablement.
Ensure data processing is optimized for speed, efficiency, and fault tolerance, enabling seamless integration with AI/ML workflows and reliable performance across all our Health products.
Monitor and improve uptime, reliability, and observability of our data infrastructure and pipelines.
Build and maintain systems to ensure data quality, consistency, and usability across the organization, enabling advanced analytics and AI solutions.
Work closely with product and engineering teams to deliver new features rapidly and with a high standard of technical excellence.
Drive innovation in how we build, measure, and optimize data features, backend services, and AI product integrations.
Participate in on-call rotations with a service-oriented approach and fast responsiveness.
Lead scalability efforts to support increasing data volumes, expanding AI/ML initiatives, and new product launches.

We are seeking a highly skilled developer to join the Secure Protocols Inspection group, working in complex, challenging, and high-performance Linux environments.
Job Id: 24974
The team is responsible for the design and development of security-critical products and frameworks at the core of our HTTPS/TLS inspection capabilities.
In this role, you will work on core systems responsible for the real-time processing of large volumes of encrypted network traffic in production environments. You will take part in designing, implementing, and evolving secure communication and inspection technologies, addressing performance and security challenges across modern protocols and platforms. The work spans low-level kernel and user space, as well as backend and frontend components.
The position requires deep technical ownership, close collaboration with other R&D teams, and the ability to solve complex problems in large-scale production systems.
Why Join Us?
Hybrid Work Model: Enjoy the flexibility of working from the office and from home.
Impactful Work: Play a critical role in developing security solutions that protect organizations and individuals.
Growth Opportunities: Access to learning and development resources to advance your career.
Collaborative Environment: Work in a supportive team that values diverse perspectives and innovative ideas.
Key Responsibilities
4+ years of programming experience, at least 2 in C/C++
Develop and maintain high-performance Linux-based software.
Improve existing code for performance, security, and maintainability.
Collaborate in the design and development of next-generation security solutions.
Quickly learn and take ownership of existing projects, understanding their architecture and functionality.

We are seeking a Software Backend Engineer to join our experienced team. As a Software Backend Engineer, you will be responsible for designing, developing, and maintaining the backend systems of our software products. You will have the opportunity to work with a variety of technologies and programming languages, and will be expected to contribute to the design and architecture of our systems while working closely with the rest of the engineering team. This is an excellent opportunity for someone who is looking to build a solid foundation in backend software engineering and gain valuable experience in a fast-paced and dynamic work environment.
What youll do:
Design and implement scalable and efficient backend systems
Write clean, maintainable, and well-documented code
Participate in code reviews and provide constructive feedback to peers
Collaborate with the rest of the engineering team to ensure that the infrastructure is designed and implemented in a way that is consistent with overall architectural goals
Monitor and troubleshoot production issues, including identifying and fixing bottlenecks and bugs
Stay up-to-date with industry best practices and new technologies.

We are seeking a skilled Senior Backend Engineer to join our team and help us build Cognition, a multi-agent AI platform. The ideal candidate will have strong backend engineering expertise and enthusiasm for working with cutting-edge AI technologies.You'll be responsible for designing and implementing backend services that integrate AI capabilities including large language models (LLMs), retrieval-augmented generation (RAG), and conversational interfaces into our consumer-facing products. This is an opportunity to expand your expertise into AI while leveraging your strong engineering foundation.
What Youll Do:
Design and develop scalable, high-performance backend services and APIs
Implement integrations with AI platforms and services
Work with AI specialists to translate AI capabilities into production-ready features
Ensure high reliability, performance, and security of AI-powered systems
Collaborate with product and engineering teams to gather requirements and deliver solutions

We are seeking a Senior Software Backend Engineer to join our experienced team. As a Senior Software Backend Engineer, you will be responsible for designing, developing, and maintaining the backend systems of our software products. You will have the opportunity to work with a variety of technologies and programming languages, and will be expected to contribute to the design and architecture of our systems while working closely with the rest of the engineering team. This is an excellent opportunity for someone who is looking to build a solid foundation in backend software engineering and gain valuable experience in a fast-paced and dynamic work environment.
What youll do:
Design and implement scalable and efficient backend systems
Write clean, maintainable, and well-documented code
Participate in code reviews and provide constructive feedback to peers
Collaborate with the rest of the engineering team to ensure that the infrastructure is designed and implemented in a way that is consistent with overall architectural goals
Monitor and troubleshoot production issues, including identifying and fixing bottlenecks and bugs
Stay up-to-date with industry best practices and new technologies.

Were looking for a Senior Backend Developer to help build and scale the core systems powering our products end-to-end. In this role, youll take ownership of backend services, design and develop robust, scalable architectures, and work closely with product and engineering teams to solve meaningful challenges that directly impact our customers and partners.
Youll work with modern technologies including Node.js, Nest.js, TypeScript, PostgreSQL, and AWS, in a fast-moving environment that values strong engineering fundamentals, a product-driven mindset, and a passion for solving complex problems at scale.
Responsibilities:
Design, develop, and deploy scalable, high-performance backend services that support our web and mobile applications.
Own backend features end-to-end: from technical design and implementation to production deployment and ongoing improvements.
Write clean, maintainable, and well-documented TypeScript code, following best practices, design patterns, and high testing standards.
Build and optimize PostgreSQL schemas, queries, and data flows to ensure reliability and performance at scale.
Participate in architecture discussions and help drive technical decisions that improve velocity, stability, and extensibility.
Perform code reviews, troubleshoot production issues, and proactively improve system observability, reliability, and performance.
Collaborate closely with Product, FE, QA, and other stakeholders to understand requirements and translate them into clear technical plans and execution.