Sinch AB

Build the next generation of conversational AI infrastructure as a Senior Software Engineer owning the context storage platform for AI agents across SMS, WhatsApp, and voice. You’ll design event-driven systems, scalable data models, and production-grade Go services from the ground up.

Senior Software Engineer responsible for building the backend and orchestration layer behind Sinch’s conversational AI products, including durable workflows, APIs, persistence, and real-time production systems. The role combines backend engineering with hands-on AI product development in a hybrid Madrid-based team.

Build and evolve Sinch’s customer-facing Build Dashboard as a Full-Stack Software Engineer III, with a strong focus on React and end-to-end feature delivery. Join a small, fast-moving team that experiments frequently, ships often, and uses customer data and AI coding tools to improve product outcomes.

Build and operate the backend services powering Sinch’s customer sign-up and KYC verification flows. This Stockholm-based hybrid role focuses on Node.js, TypeScript, distributed systems, and microservices ownership from design through production.

Build the backend services and APIs powering Sinch’s Build Dashboard and customer experiments as a Backend Software Engineer III. This hybrid Stockholm role offers meaningful ownership on a small, fast-moving team focused on frequent, data-informed product delivery.

Senior Full-Stack Software Engineer building Sinch’s customer onboarding and verification experience end to end across React and Node.js. The hybrid Stockholm role combines hands-on product development with technical ownership, mentoring, and improving reliability.

Senior Forward Deployed Engineer responsible for embedding with enterprise customers, building production integrations, and leading deployments from discovery through stabilization and handoff. The role combines software engineering, solution architecture, technical delivery, and customer enablement across Sinch’s communications APIs.

Sinch is hiring a Security Engineer to protect cloud and on-premise environments through vulnerability assessment, attack-surface management, cloud hardening, and security automation. This hybrid Sweden-based role focuses on strengthening infrastructure security while collaborating with global security and cross-functional teams.