Backend Developer

**About Black Rabbit** Black Rabbit is the leading online seller of commercial airline tickets in Israel (B2C), operating multiple brands — most notably Alice.co.il . We are one of only eight companies worldwide working directly with Google Flights , reflecting our strong market position and technical capabilities.

Over the past two years, Black Rabbit has expanded into the B2B space and is currently building a new Corporate Travel product. Our innovative approach sets us apart in a traditionally conservative industry, and we are proud to be both profitable and forward-thinking. We foster a youthful, dynamic, and collaborative work environment.

Requirements Senior Back-End Engineer

About The Role We are looking for a talented Senior Back-End Engineer to join our small, agile team in a fast-paced CI/CD environment. You will own features from conception to post-deployment, working closely with Product and Design to scale our architecture and build seamless user experiences.

You will also play a key role in integrating modern AI capabilities—specifically leveraging Anthropic’s Claude —to build intelligent, reliable features directly into our core product.

Our Tech Stack: C#, .NET 8, React.js, Redux, Azure, Redis, SQL Server, Snowflake.

What You’ll Do

• Scale & Evolve: Architect and build high-performance APIs and distributed services using C# and .NET 8.
• Deliver End-to-End: Take full ownership of features in a continuous delivery environment.
• Integrate Smart Features: Collaborate on implementing LLM capabilities (like Claude) to power new, user-facing AI features.
• Focus on Quality: Write clean, simple, and highly maintainable code alongside a talented peer group.

Experience & Skills

• Core Back-End: 3+ years of professional development experience with deep expertise in the C#/.NET ecosystem.
• AI & LLM Integration (Bonus/Plus): Hands-on experience or strong interest in integrating Large Language Models (specifically Anthropic Claude). Ideally, you understand:
• Prompt design (such as leveraging Claude’s XML tag structure).
• Tool use / function calling to connect LLMs to your C# backend.
• Handling LLM latency and rate limits using caching (Redis) and asynchronous workflows.
• Product Mindset: A passion for building software that delivers an exceptional, intuitive user experience.
• Team First: Strong communication skills, empathy, and a highly collaborative approach to engineering.