Senior Software Engineer - Agentic Platform
Senior Software Engineer at Cross River (Jerusalem, hybrid) designing, building, and deploying high-scale backend systems for fintech applications, plus building the platform for creating and operating agent-based (LLM) systems. Core stack includes OOP languages like Python/C#, Docker/Kubernetes, and cloud infrastructure.
- Compensation
- Not disclosed
- Location
- Jerusalem, Jerusalem District
- Work setup
- Hybrid
- Seniority
- Senior
- Employment
- Not specified
- Experience
- 7+ years
- Category
- Software engineering
- Posted
Skills
Must have
- 7+ years of experience in software development
- Deep experience in at least one OOP language (e.g., Python, C#)
- Experience with cloud-native environments and containerization (Docker, Kubernetes)
- Familiarity with scalable architecture, distributed systems, and performance optimization
- Strong understanding of testing strategies, code quality, and security best practices
- Fluent in English and Hebrew - written and verbal
- Bachelor's degree in computer science or equivalent experience
- Hands-on experience with LLM or agent systems (tool use, orchestration, evaluating non-deterministic behavior)
- Hybrid model: 3 days a week in the office
Nice to have
- Experience with fintech, global teams, or scaling SaaS
- Hands-on AWS experience with identity and access management
Full description
Who 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
As a Senior Software Engineer, you’ll design, develop, and deploy robust software systems across our platform. You’ll have ownership of end-to-end projects, the autonomy to lead from idea to implementation, and the opportunity to work across product lines - from scalable APIs and secure infrastructure to machine learning.
The role also brings unique engineering challenges shaped by regulatory and compliance requirements - pushing your creativity and technical capabilities.
Who You Are
- A product-minded engineer who loves solving problems at scale
- Comfortable owning full systems - from architecture to deployment
- Passionate about writing clean, maintainable code with an eye on the end user
- A collaborative team player who mentors generously and learns continuously
- Curious, thoughtful, and excited by a fast-moving environment
What You’ll Actually Be Doing
- Design, build, test, and deploy backend systems for high-scale financial applications
- Lead architecture reviews and drive decisions across technologies and platforms
- Write well-tested code and review peers’ work for quality and clarity
- Collaborate with Product, DevOps, and Security teams to deliver seamless experiences
- Own and improve development lifecycles including CI/CD, observability, and cloud automation
- Debug production issues and lead efforts to ensure system reliability and uptime
- Contribute to internal documentation and onboarding processes
- Participate in a Tier 2/3 on-call rotation to support business-critical systems
- Build and evolve the platform that lets teams create, evaluate, deploy, and operate agent-based systems, and bring coding agents into daily engineering work.
Requirements
What You Bring to the Table
- 7+ years of experience in software development
- Deep experience in at least one OOP language (e.g., Python, C#)
- Experience with cloud-native environments and containerization (Docker, Kubernetes).
- Familiarity with scalable architecture, distributed systems, and performance optimization
- Strong understanding of testing strategies, code quality, and security best practices
- Fluent in English and Hebrew - written and verbal