OverviewYou join Preply to scale and safeguard GenAI-powered learning experiences.

As a senior engineer on the GenAI Platform team, you design and expand systems that run production GenAI workloads, partnering with data, security, and product teams.

You shape platform abstractions, promote self-service capabilities, and drive reliable, low-latency delivery with strong observability and governance.

This role combines hands-on coding with architectural influence to impact millions of learners and tutors globally.

Compensaciones / Beneficioslesson budget and development stipend health insurance relocation package to Barcelona on-demand mental health support

Gympass and wellness centers equity and competitive compensation

ResponsabilidadesArchitect unified gateway with automated routing, quotas, and robust fallback across model vendors

Improve efficiency and reduce latency via dynamic traffic, caching, and cost allocation controls

Establish evaluation mechanisms ensuring precision, stability, and safety of model outputs

Deliver comprehensive observability: tracing, telemetry, cost analytics, monitoring, and alerts across GenAI lifecycles





Standardize prompt engineering with versioning, automated testing, governance, and CI/CD for production delivery

Implement platform guardrails with Security/Privacy teams for safe defaults and policies

Maintain incident response and blameless postmortems with thorough GenAI stack monitoring

Requisitos principales5+ years designing and operating backend services or ML infrastructure with production traffic

Strong Python skills and experience building developer-facing APIs/SDKs

Hands-on experience with GenAI systems including vector retrieval and external provider APIs

Knowledge of distributed systems (high availability, concurrency, caching, rate limiting)

Experience with at least one major public cloud (preferably AWS)

Experience with distributed tracing, telemetry, SLOs, and incident triage

Excellent communication and English proficiency (C1), willingness for on-call rotation strong communication ownership and collaboration problem solving in cross-functional teams

Python

APIs/SDKs development

GenAI systems and vector databases

📌 Senior Ml Platform Engineer (Genai Platform) - Barcelona
🏢 Preply
📍 Barcelona