Sinch is a Customer Communication Cloud company powering conversations across messaging voice and email helping businesses deliver personalized customer experiences at scale More than businesses including leading general tech companies rely on Sinch
We are building the next generation of conversational AI infrastructure As a Senior Java Software Engineer on the Agentic Orchestration Platform team you will design build and own core components that coordinate AI agents workflow execution and multichannel communication via SMS WhatsApp and voice at scale
This is a zero to one opportunity to build a new platform from the ground up You will work on complex problems with high autonomy as part of a small senior team with significant impact You will collaborate with Engineering Manager Tech Lead Product Manager Domain Architect and cross functional teams
Write production grade software including clean maintainable code with tests and documentation Build systems that are observable debuggable and resilient
Own full lifecycle including design deployment monitoring and on call responsibilities




Address challenges like testing non deterministic systems fallback strategies latency and cost optimization
Five to eight plus years of professional software engineering experience
Strong backend and platform skills including distributed systems microservices event driven architectures and cloud native design.
Strong engineering fundamentals including clean code testing strategies debugging production systems and building reliable long lasting systems
Experience with Java Spring AI TypeScript or React Deep expertise in at least two core backend technologies and willingness to learn others quickly
Experience using AI coding tools such as Copilot Claude Code Cursor or similar
Experience with cloud and operations including AWS Docker Kubernetes CI CD GitOps infrastructure as code and monitoring
Strong communication skills with both technical and non technical stakeholders Fluent English requ

📌 Aws Engineer/software Developer (Madrid)
🏢 Sinch
📍 Madrid