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Senior II Back-End Engineer

Barcelona💼 Full-time🗓 2025-09-05 → 2026-09-25

Core

Drive technical direction and build scalable backend systems for a global AI-enhanced language learning platform serving 100,000+ tutors and 180+ countries.

Role type

Senior II Backend Engineer (Technical Lead)

Builds

Scalable backend systems, data pipelines, and third-party integrations for the Preply platform.

Domain

Ed-Tech / AI-enhanced language learning

Deliverable

production ML models | product features | infrastructure

Required skills

Architectural pattern design, leading complex greenfield projects, shaping architectural decisions, product scope definition, technical trade-off analysis, on-call rotation management

Preferred skills

Experience with Python/Django, exposure to high-scale web applications, mentoring capabilities

Technologies

Python, Django, data pipelines

Responsibilities

Own and drive technical direction across multiple engineering squads; Lead complex initiatives from idea to delivery; Design and evolve scalable backend systems; Partner with stakeholders to shape roadmaps and guide investment decisions; Raise the engineering bar through mentoring and architectural reviews; Drive reliability, observability, and operational excellence; Participate in on-call rotation (1 week every 5 weeks)

Seniority

Senior, hands-on IC with leadership responsibilities

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