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Senior Platform Software Engineer - Developer Platform

Preply - Barcelona, Catalonia, Spain - In-office - posted 2026-09-23

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Preply is a unicorn edtech company (Series D, $150M) transforming education through human-led, AI-enhanced learning. With 100,000+ tutors teaching 90+ languages to learners in 180 countries, the platform handles over 20 billion requests per month. The Platform Tribe builds and operates the infrastructure that Preply engineers develop and deploy on. As a Senior Platform Software Engineer on the Developer Platform team, you will focus on CI/CD systems, developer experience, tooling, and AI-native development workflows. Key responsibilities: - Build and improve CI/CD systems, testing capabilities, and paved paths enabling engineers to ship quickly and safely - Own and evolve the developer journey from code writing through testing and deployment - Build internal platforms, services, and developer tooling to reduce friction and enable autonomous engineering - Provide infrastructure and paved paths for engineers and coding agents to build, test, and ship independently - Leverage AI and agentic workflows to rethink the software development lifecycle, with appropriate quality gates and safety nets - Operate systems through support and incident rotation; use data and feedback to continuously improve the platform - Partner with engineering teams as platform users, driving adoption and aligning stakeholders across squads You'll work in small teams with significant ownership over architecture and technical decisions. The role offers diverse technical challenges across the stack, with opportunities to contribute to Preply's Engineering Blog and shape the company's technology direction. REQUIREMENTS: - ~8 years of experience designing and building complex backend software systems - Strong hands-on experience building and operating CI/CD systems and pipelines at scale, including reliability, performance, and cost trade-offs - Proficiency in Python for building platform services, developer tooling, and automation (not required to be Python-first, but must be productive) - Forefront user of Agentic AI with hands-on experience; ability to influence architecture, business logic, and security decisions; experience setting up quality gates and safety nets for AI-enhanced workflows - Experience building developer platforms, internal developer tooling, developer productivity, or developer experience solutions - Experience designing platforms and tooling for engineers as internal users, with strong understanding of developer needs and workflows - Familiarity with cloud-native environments and distributed systems - Business orientation and data-driven approach - Strong communication skills; minimum C1 English level

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