Senior GenAI Platform Engineer

Preply; España; On-site; EUR 100,000 - 140,000; Full time

Benefits offered by this job

Monthly lesson stipend

Job summary

Preply is building the GenAI Platform to power scalable, safe AI experiences across products. As a Senior ML Platform Engineer, you will design and expand the GenAI platform, turning recurring engineering needs into reliable self-service capabilities, and shaping system architecture.

This hands-on role demands strong Python, distributed systems expertise, and collaboration with data, security, product, and engineering teams while supporting on-call rotations.

Qualifications

• 5+ years designing, building and operating backend services or ML infrastructure.
• Strong Python skills and experience building developer-facing APIs/SDKs or shared libraries.
• Experience with GenAI systems, including vector retrieval, external provider APIs, and common issues.
• Knowledge of distributed systems, including high availability, concurrency, caching and rate limiting.
• Experience with at least one major public cloud, its services and infrastructure (preferably AWS).
• Hands-on experience with distributed tracing, system telemetry, SLOs, and incident triage.
• Strong communication skills and at least C1 English level, plus willingness to join a paid on-call rotation.

Responsibilities

• Architect unified gateway with automated routing, quota controls, and resilient fallback systems across model vendors.
• Drive system efficiency and low latency via dynamic traffic management, response caching, token budgeting, and cost allocation controls.
• Establish robust evaluation mechanisms to guarantee high precision, stability, and safety in model outputs.
• Deliver system observability, providing deep tracing, performance telemetry, cost analytics, continuous monitoring, and alerting across GenAI lifecycles.
• Standardize prompt engineering workflows with automated versioning, automated testing, governance, and CI/CD integrations for production delivery.
• Embed platform guardrails alongside Security and Privacy experts to enforce policies, and safe production defaults automatically.
• Maintain sustainable incident response, blameless postmortems, and comprehensive monitoring for GenAI stacks.

Skills

Python

Backend services

APIs/SDKs

GenAI systems

Distributed systems

AWS

Observability/Tracing

English (C1)

Job description

Preply is building the GenAI Platform to power scalable, safe AI experiences across products. As a Senior ML Platform Engineer, you will design and expand the GenAI platform, turning recurring engineering needs into reliable self-service capabilities, and shaping system architecture.

This hands-on role demands strong Python, distributed systems expertise, and collaboration with data, security, product, and engineering teams while supporting on-call rotations.