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Senior Backend Engineer, Customer Communications Platform

Madrid Office💼 Full-time🗓 2026-09-16 → 2026-09-30

Core

Design, develop, deploy, and operate business-critical backend features for a customer communications platform integrating voice, SMS, and AI.

Role type

Senior Backend Engineer

Builds

Resilient services on top of voice, integrated with customers' business-critical tools (CRM, Helpdesk, E-Commerce)

Domain

Customer Communications Platform (Voice, SMS, WhatsApp, AI)

Deliverable

production ML models | product features

Required skills

TypeScript, NodeJS, AWS, REST API/GraphQL, PostgreSQL, DynamoDB, Redis, scalable architecture design, security, performance optimization

Preferred skills

Python, Ruby, Rails, React, frontend development

Technologies

NodeJS, TypeScript, AWS, PostgreSQL, DynamoDB, OpenSearch, Redis, GraphQL, REST API, React, Python, Ruby, Rails

Responsibilities

Create, design, develop, test, and monitor code in production autonomously; collaborate with product managers and designers to implement end-to-end solutions; design high-quality, secure, and scalable solutions; mentor team members on tech growth; stay up-to-date on new technologies and architectures

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