About Longtail Longtail is building an intelligent decision-streaming platform that helps airlines make smarter, faster commercial decisions in real time. Combining automation, proprietary algorithms, AI, and live data, our technology helps airlines optimize pricing, availability, and product flexibility across thousands of routes worldwide.

The Role

You'll help build and evolve Sightline , Longtail's conversational analytics and intelligent alerting product, as it moves from beta to a scalable, production-ready platform. This is a backend-focused full-stack role. A key challenge on this team is building AI-native software customers can trust: turning customer intent into secure, observable, explainable, and repeatable production workflows.

We're looking for someone with 7+ years of backend/full-stack engineering experience , including time spent operating production systems, not just shipping them.

What You'll Do Design and build backend services, APIs, and customer-facing capabilities across Sightline's product and platform; Integrate with data, analytics, and AI model platforms Contribute to the React frontend when a feature calls for it Improve testing, observability, security,



and performance across the platform Our Tech Stack Backend: Java, Spring Boot, Python, FastAPI, MCP Frontend: React, Vite, Zustand, Vitest, Nginx AI & Data: Anthropic, OpenAI, OpenRouter, Databricks, PostgreSQL, Amazon Aurora Infrastructure: AWS, Kubernetes, Docker, Terraform, Kong, Keycloak, OpenTelemetry, New Relic What We're Looking For You're a strong backend engineer who: Has strong API, database, and SQL skills Enjoys owning features end to end and takes ownership of software beyond deployment Working at Longtail We're a collaborative, distributed team that values transparency, ownership, clear communication, and sustainable ways of working.

Compensation & Benefits Competitive Package with base + bonus + equity + Benefits (Private health insurance and Pension contribution, Learning and Development budget, Childcare, transport and meal vouchers...). If you want to build AI-powered products that turn complex airline data into better commercial decisions - and solve the engineering challenges required to make AI reliable at enterprise scale - we'd love to meet you.

📌 Full Stack Product Engineer (Bellprat)
🏢 Longtail Technologies
📍 Bellprat