דרושים » תוכנה » Senior backend Developer - Real Time Optimization Team

As a Backend Engineer , you will take on exciting challenges, including researching new algorithms and probability models, developing systems from scratch, and working in a fast-paced real-time environment. You will also build services that leverage real-time buying data to dynamically optimize campaign configurations, ensuring we achieve the most effective outcomes for our clients.

Collaboration is key in this role. You will work closely with data science and product team, requiring both technical expertise and a deep understanding of the domain. In addition, you will integrate with 3rd-party platforms.
Responsibilities

Design, code, and manage large-scale, highly available, real-time (low latency) services using cutting-edge technologies (Python, Node.js, Redis, Docker, built on AWS infrastructure).
Work with stakeholders including the Executive, Product, Data, and Design teams to craft the most optimal solutions for our problems
Design and develop APIs or integrate with 3rd party APIs
Performing code reviews with other team members
Assist in-house teams and supply creative solutions for various problems
Understand and implement security and data protection needs

As a Senior Software Engineer , youll design and build high-performance APIs and infrastructure that power our core systems. Youll work on developing frameworks used by services that demand supporting millions of users across the world.

The right person for this role is passionate about building systems that are optimized for scalability, efficiency, quality, and uptime. If you are someone who gets excited with sub-millisecond service response time in a large scalable platform, then this is the role for you. You will be working with cutting-edge technologies such as Kotlin, Nodejs, Typescript, Kafka, AWS, Kubernetes, MongoDB, Redis, and many more...

What am I going to do?
Manage the full development lifecycle: architecture, design, development, deployment, and monitoring.
Develop highly scalable, reliable, and maintainable core services with robust testing.
Collaborate closely with team members to meet product, tech and business objectives.
Explore and experiment with emerging technologies to ensure future scalability and growth.

We are looking for a Senior Backend Engineer to join our AI/ML team. In this role, youll work closely with data scientists to transform cutting-edge machine learning models into scalable, production-ready services. You will take ownership of designing, building, and maintaining the backend systems that power our AI-driven features.

This is a key position that bridges the gap between data science and production engineering, ensuring high performance, reliability, and maintainability of our ML-powered products.

Responsibilities:
Collaborate with data scientists to understand modeling outputs and convert them into deployable services.
Design and develop robust, scalable backend systems and microservices to support AI use cases.
Own the deployment and monitoring of ML models in production (with CI/CD, logging, observability).
Implement data processing pipelines in support of model training and inference.
Ensure software adheres to best practices in architecture, testing, and documentation.
Optimize model inference for latency, throughput, and resource efficiency.
Contribute to design decisions and technical strategy alongside AI and infrastructure leads.

we are looking for a Senior Backend Engineer to join our ERP group and help power the financial infrastructure of thousands of businesses. This is a high-impact role in an AI-first company, where backend engineering meets intelligent automation. Youll be building robust, scalable systems that integrate with top ERP platforms-ensuring seamless data flows and operational excellence.
As part of a team that embeds AI in every layer of our product and operations, youll contribute directly to cutting-edge financial technology solutions used by 1,600+ customers. Your code wont just run-itll think smarter.
What You Will Do:
Champion AI-First Development: Leverage relevant development tools like Cursor, Codex, Copilot, and agent-based frameworks to accelerate development and optimize integrations.
Engineer Seamless Integrations: Design and implement stable, resilient, high-performance connections between and 70+ leading ERP systems, forming the backbone of our AI-driven procure-to-pay platform.
Own What You Build: Take full responsibility for features from ideation through production-ensuring reliability and performance at scale.
Think at Scale: Architect solutions that serve a rapidly growing user base with resilience, speed, and future-proof flexibility.
Innovate Relentlessly: In our fast-paced, AI-powered environment, youll continuously evolve backend systems, experimenting with new patterns and tech to enhance system intelligence.
Solve Complex Puzzles: Navigate ERP integration challenges with creativity and precision-where every obstacle is an opportunity to innovate.
Be Customer-Obsessed: Partner closely with Product, Support, and QA to ensure your work translates to tangible customer impact.

As the worlds leading vendor of Cyber Security, facing the most sophisticated threats and attacks, weve assembled a global team of the most driven, creative, and innovative people. At our company, our employees are redefining the security landscape by meeting our customers real-time needs and providing our cutting-edge technologies and services to an ever-growing customer base.
our company's Software Technologies has been honored by Time Magazine as one of the Worlds Best Companies for 2024. We've also earned a spot on the Forbes list of the Worlds Best Places to Work for five consecutive years (2020-2024) and recognized as one of the Worlds Top Female-Friendly Companies. If you're passionate about making the world a safer place and want to be part of an award-winning company culture, we invite you to join us.
our company's Harmony Email Security and Collaboration (Previously AVANAN) is a unique email solution that fully secures cloud email and cloud platforms using AI.
We are looking for a promising and brilliant Cloud Backend Developer to join our team!
This is a unique opportunity to work on a large-scale cloud-native system using cutting-edge technology in an agile environment!
Key Responsibilities
As a Cloud Backend Developer, you will be responsible for developing and maintaining exciting security products for our companys customers. Our production environment is a fast-paced, agile development cloud environment - handling tens of millions of transactions daily.
You will develop software serving large scale production real-time multi-tenant environment, handling large quantities of data, using microservices architecture and design patterns.
The domain you will tackle will involve cutting edge cybersecurity cloud solutions, like phishing, impersonation, anomaly detection, and more. All are implemented with the latest AWS tools and managed services such as Aurora RDS, Kinesis, DynamoDB, SQS, ElasticSearch, ElasticCache, and many more. You will design and develop high impact real-time components, and take ownership of the end-to-end solution.
Develop production-grade, large-scale cloud-based security products.
Design and develop data-driven applications in an agile development environment.
Collaborate cross-functionally with product managers, QA, automation, data engineers, and other engineers to achieve elegant solutions.
Work alongside other engineers on the team to elevate technology and consistently apply best practices.

We are looking for an experienced Backend Developer to join the OptiPromo team. You will be responsible for designing, building, and maintaining scalable backend services that empower our Promotions capabilities. Youll work in a modern, cloud-native environment with a strong focus on performance, scale, reliability, and clean software design.
Responsibilities:
Design and implement backend services using Java and Node.js, following OOP principles
Design and build batch and streaming data pipelines using Apache Beam
Develop scalable, secure, and observable services using GCP tools such as BigTable, Dataflow, and BigQuery
Define and use Protobuf-based DTOs to support structured data exchange across services
Collaborate closely with product and architecture teams to extend the promotion engine and related systems
Write clean, testable, and efficient code based on SOLID principles
Participate in code reviews, design sessions, and contribute to technical documentation

we are looking for an outstanding Senior Cloud Developer in the ThreatCloud group.
The group is responsible for building the worlds largest and most advanced Threat Prevention cloud platform called Threat Cloud - a global platform that inspects data from hundreds of millions of sources from hundreds of thousands of customers in real time, preventing threats and sharing threat intelligence.
In this position you will join a strong team of developers and will be in charge of researching and building the next generation of detection engines such as anti-phishing and web security using AI and Machine Learning, you will build an infrastructure to deliver these and other capabilities to all our company's Products based on cutting edge cloud services and serve Billions of requests per day.
You will develop new products and capabilities in an agile manner, directly contributing to our company's business plans and to the world's cyber security.
The group is tasked with tackling some of the worlds biggest technical and cyber security challenges, protecting the world from Malware, Phishing, Supply Chain attacks, and other advanced threats in an ever changing landscape where threat actors and adversaries do their best to avoid detection.
You will join a top-notch team of experienced software engineers and cyber security experts, and will own the development of end to end features from design to production using cutting edge cloud technologies, and do so in a dynamic and fast-paced environment.
Come join a team of motivated, fun, creative minds united in delivering innovative new technology and cyber security against the ever-changing threat landscape!!!
Key Responsibilities
Develop end to end features and cloud services in an Internet scale environment with the latest cloud technologies and methodologies.
Research & develop security engines utilizing big data, heuristics and machine learning.
Own your work end to end, from research through design to production.
Be part of a development team, collaborate with your peers and contribute ideas and knowledge.
Work together with product managers, security researchers and other product stakeholders to define requirements and support our customers.

An innovative network security solutions provider, is at an exciting time in its history and is growing fast! We are looking for a highly skilled and versatile Backend Engineer to join our development team. As a Backend Engineer, you will be responsible for designing, developing, and maintaining the backend infrastructure and components of our platform. As part of your role, you will also work on the frontend aspects of our platform and collaborate with stakeholders and cross-functional teams to optimize full-cycle system performance
Responsibilities:
Design, develop, and maintain backend systems and APIs to support our web applications
Implement and optimize data storage solutions, including databases, to ensure efficient and reliable data management
work closely with front-end developers to integrate backend functionalities and ensure a seamless user experience
Collaborate with product managers, stakeholders, and cross-functional teams to gather requirements, translate them into technical specifications, troubleshoot and resolve backend-related issues, and optimize system performance.

We are At Cross River, we're building the financial infrastructure that powers global innovation. With our cutting-edge suite of embedded payments, cards, and lending solutions, we enable millions of businesses and consumers to transact seamlessly and securely. With 900+ employees worldwide and an R&D center of over 160 employees in Jerusalem - we’re reshaping how financial technology is developed and delivered. .

The Role:
We are looking for a backend engineer who can design, build, and operate highly reliable Node.js services on AWS that enable generative?AI capabilities across our products and internal workflows. You will create scalable APIs, data pipelines, and serverless architectures that integrate large?language?model (LLM) services such as Amazon Bedrock, OpenAI, and open?source models, enabling teams to safely and efficiently leverage generative AI.

Who You Are:

* You have experience building Retrieval?Augmented Generation (RAG) systems or knowledge?base chatbots.
* You're Hands?on with vector databases such as Pinecone, Chroma, or pgvector on Postgres/Aurora.
* Have AWS certification (Developer, Solutions Architect, or Machine Learning Specialty).
* Experience with observability tooling (Datadog, New Relic) and cost?optimization strategies for AI workloads.
* Background in microservices, domain?driven design, or event?sourcing patterns.

What You’ll Actually Be Doing:

* Design and implement REST/GraphQL APIs in Node.js/TypeScript to serve generative?AI features such as chat, summarization, and content generation.
* Build and maintain AWS?native architectures using Lambda, API Gateway, ECS/Fargate, DynamoDB, S3, and Step Functions.
* Integrate and orchestrate LLM services (Amazon Bedrock, OpenAI, self?hosted models) and vector databases (Amazon Aurora pgvector, Pinecone, Chroma) to power Retrieval?Augmented Generation (RAG) pipelines.
* Create secure, observable, and cost?efficient infrastructure as code (CDK/Terraform) and automate CI/CD with GitHub Actions or AWS CodePipeline.
* Implement monitoring, tracing, and logging (CloudWatch, X?Ray, OpenTelemetry) to track latency, cost, and output quality of AI endpoints.
* Collaborate with ML engineers, product managers, and front?end teams in agile sprints; participate in design reviews and knowledge?sharing sessions.
* Establish best practices for prompt engineering, model evaluation, and data governance to ensure responsible AI usage.


Why You’ll Love Working Here:
We’re a collaborative, humble, and fast-paced team that takes pride in building real solutions to real problems. You’ll work on meaningful products that empower businesses and people, alongside curious, supportive teammates who are always up for a challenge. Innovation and ownership are part of our DNA—and we’re just getting started.

Next Step:
Hit Apply. Bring your AI vibes. We’ll bring the challenge - and the snacks.

We are looking for a passionate Software Developer with a strong desire to take part in one of our most exciting new products in the world of Security Automation.
This is an amazing opportunity to learn and work with cutting-edge cloud and web technologies, and to help build and own a new product from its early stages.
Join a leading team developing the backend and frontend of a state-of-the-art cloud application, working with agile development methodologies.
If youre eager to move fast, make a wide impact, and are the kind of person who gets the job done no matter what were looking for you!
Key Responsibilities
End-to-end backend and frontend development of a new cloud product in the field of Security Automation.
Lead all stages of the development cycle from requirements to production while developing multi-tenant, high-scale, efficient, and secure code.
Be part of a growing, leading team working with state-of-the-art cloud and web technologies, including microservices architecture.
Propose solutions for complex technical challenges.