Sinch
Sinch
Sinch furnizează software și infrastructură de comunicații pentru companii și furnizori de servicii de comunicații. Platforma sa CPaaS combină API-uri și aplicații destinate dezvoltatorilor pentru mesagerie, voce, e-mail, verificarea identității și inteligență artificială conversațională, împreună cu conectivitate la rețele și servicii de telecomunicații. Organizațiile folosesc Sinch pentru campanii de marketing, notificări, alerte, asistență pentru clienți și fluxuri de verificare prin canale precum SMS, RCS, WhatsApp, e-mail și voce. Platforma companiei este construită pe o infrastructură de comunicații scalabilă și pe o conectivitate extinsă cu operatorii de telecomunicații.

Senior Software Engineer, Conversational AI Platform (Madrid Hybrid)

Build scalable backend services for Sinch’s conversational AI platform, supporting real-time text and voice interactions. Work across distributed systems, integrations, and cloud infrastructure.

Descriere

  • Build backend services for Chatlayer’s text and voice channels, including WebSocket servers and real-time communication infrastructure.
  • Develop platform integrations and application-integration frameworks.
  • Help modernize the architecture by removing legacy dependencies and creating modular, vendor-agnostic systems.
  • Contribute to technical decisions involving SinchID, MongoDB Atlas, Kafka, Temporal, and emerging platform capabilities.
  • Lead code reviews, technical discussions, and knowledge-sharing sessions.
  • Mentor engineers, seek mentorship, and help strengthen the engineering culture.
  • Support production systems through on-call rotations and incident response.
  • Expand test coverage, reduce technical debt, and improve operational processes.

Cerințe

  • At least five years of professional software engineering experience.
  • Strong proficiency with Node.js and TypeScript, Go, or both.
  • Experience developing real-time systems, including WebSocket or event-driven architectures.
  • Hands-on experience with complex cloud infrastructure, preferably GCP and/or AWS.
  • Experience with microservices and distributed systems, including state management across replicas using technologies such as ETCD or Redis.
  • Working knowledge of MongoDB or a comparable document database.
  • Experience building and maintaining RESTful APIs and event-driven architectures, preferably with Kafka.
  • Strong system design fundamentals, including scalability, latency, failover, and architectural trade-offs.
  • Excellent communication skills and confidence working with distributed, cross-functional teams.
  • English is the corporate language, and applications must be submitted in English.
  • Preferred: experience with conversational AI, chatbot or voicebot platforms, or NLP/NLU pipelines.
  • Preferred: experience using Docker and Kubernetes.
  • Preferred: familiarity with OAuth/OIDC identity management systems.
  • Preferred: previous experience in a CPaaS, scale-up, or fast-growth product company.

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