Do you excel at solving complex backend challenges like streaming responses, intelligent batching, low-latency caching, and API optimization under heavy load?
Are you looking for a high-impact backend role where system reliability, cost efficiency, and ultra-low latency directly drive the product experience?
Our clients mission is to fundamentally change the productivity landscape around email, calendars and note taking by developing proactive, AI-native applications designed for the general public. As a Backend Engineer specializing in AI infrastructure, you will own the inference and orchestration layer that powers intelligent features across all client platforms. Operating at the intersection of machine learning models and end-user applications, you will build and run high-scale production systems where latency, reliability, correctness, and cost efficiency directly drive the user experience.

Build and operate scalable backend systems that serve AI-powered features in production.
Design high-performance inference pipelines, orchestration workflows,



and clear service boundaries around ML models.
Own system health and observability, including performance monitoring, structured logging, alerting, and incident response.
Collaborate with client and machine learning engineers to deliver stable, high-efficiency APIs for mobile and desktop applications.
To be a good fit for the Backend Engineer role, you will have:
Proven background in core backend software engineering within production environments. ( Python, Node.js)
Infrastructure Experience with Docker, Kubernetes
Familiarity with commercial AI APIs (e.g., High‑caliber engineers from top tech companies; Fully remote, general team, strong ownership, and visible impact.
The provision of personal data by you is fully voluntary and the basis for their processing is your consent. We have prepared some necessary information, you can find in document: "Information regarding the processing of your personal data" . There you

📌 Backend Developer Node.JS IT · Completamente remoto (España)
🏢 Sowelo Consulting sp. z o.o.
📍 España