Senior AI Platform Engineer - Java Backend

Sinch; España; Presencial; EUR 60.000 - 80.000; Jornada completa

Descripción de la vacante

Sinch is 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

Formación

• 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.
• Ability to explain architectural trade offs clearly.
• 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.
• Understanding benefits, risks and best practices.
• Ability to work autonomously, define scope and deliver solutions independently; strong prioritization decisions.
• 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 required.

Responsabilidades

• Design and build core platform components with high ownership and autonomy.
• Drive system design and create technical proposals.
• Work on distributed event driven systems combining deterministic workflows and AI agent behavior.
• 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.
• Follow build, ship, run approach.
• Develop platform components integrating LLMs and AI agents.
• Work with prompt management, context handling, function calling, guardrails and error recovery.
• Address challenges like testing non-deterministic systems, fallback strategies, latency and cost optimization.
• Contribute to engineering excellence through architecture discussions, code reviews and standards definition.
• Mentor team members and share knowledge.
• Collaborate across teams with product and technical stakeholders.
• Provide technical guidance and trade-offs and align solutions with business needs.

Conocimientos

Distributed systems

Microservices

Event-driven architectures

Cloud native design

Architectural trade-offs

Autonomy

Communication

Herramientas

Java Spring

TypeScript/React

Copilot

Claude

Code Cursor

Docker

Kubernetes

CI/CD

GitOps

Descripción del empleo

Sinch is 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