Senior Full-Stack Engineer (Back-End-Leaning) — Lead, Amplify Platform

Saga is a legal innovation company building a platform for legal professionals. They are looking for a Senior Full-Stack Engineer to lead the Amplify platform with a backend focus, designing scalable and secure services.

• Design and own Amplify's back-end service layer, providing overall architectural leadership across the engineering team.
• Build the shared trigger and notification engine, LMS backend, pricing services, and pairing/scoring services that power Amplify's core product experiences.
• Design and maintain secure multi-tenant architecture, ensuring strict tenant isolation and privacy across queries, triggers, notifications, and usage data.
• Define API contracts for front-end applications and data pipelines, while making build-vs-reuse decisions across the existing Saga platform.
• Lead technical planning by decomposing the roadmap, reviewing code across frontend and data engineering, and driving architectural decisions.
• Ensure the platform is production-ready, observable, secure, and scalable as Amplify grows.

• 7+ years of backend and full-stack engineering experience with significant production experience in TypeScript/Node.js or comparable technologies.
• Experience building event-driven systems using queues or streams, along with rules engines, trigger engines, or notification infrastructure.
• Strong experience designing multi-tenant SaaS platforms with strict tenant isolation and privacy-by-design principles.
• Experience leading or acting as the technical owner within a small engineering team, including architecture, code reviews, and roadmap planning.
• Experience with usage-based scoring or recommendation logic, LMS or workflow products, and cloud platforms such as Azure is a strong advantage.
• Strong engineering judgement with the ability to balance scalability, security, maintainability, and product delivery.

• A salary between €4,000–€6,000 gross per month (all-inclusive, based on a 40-hour week), depending on experience and skill set.
• The opportunity to shape the user experience of one of Europe's fastest-growing legal innovation companies, serving legal professionals worldwide.
• High ownership and autonomy - you'll own product quality across the platform and make visible improvements every week.
• A collaborative international team that values craftsmanship, thoughtful engineering, and continuous improvement.