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 (España)
🏢 Preply
📍 España