Senior II Back-End Engineer

Stack

Responsibilities

• ▹Own, shape and drive technical direction across multiple engineering squads
• ▹Lead complex, ambiguous initiatives from idea to delivery, aligning engineers, teams, product managers and stakeholders
• ▹Design, build and evolve scalable backend systems using Python/Django, data pipelines and third-party integrations
• ▹Partner with PMs, EMs and senior stakeholders to shape roadmaps, make technical trade-offs and guide investment decisions
• ▹Raise the engineering bar through mentoring, architectural reviews and engineering best practices
• ▹Drive reliability, observability, performance and operational excellence across multiple services and teams
• ▹Foster a quality-first culture through automation, documentation and continuous improvement
• ▹Participate in the on-call rotation (1 week every 5 weeks)

Requirements

• ▹Exposure to architectural patterns of a large, high-scale web application (well-designed APIs, high-volume data pipelines, efficient algorithms)
• ▹Proven experience leading complex, greenfield projects end-to-end
• ▹Track record of shaping architectural decisions and setting engineering standards that impact multiple teams or domains
• ▹Comfort with shaping product scope, challenging requirements and focusing on customer value
• ▹Strong communication (English level B2+) with the ability to influence senior peers and leadership through clear reasoning and technical judgment
• ▹Willingness to join the team's on-call rotation (1 week out of every 5)
• ▹Python is the primary language but prior experience is not mandatory; backgrounds in Java, Node.js, Ruby, Scala, .NET, PHP or Go are welcome if you are eager to learn the language

Soft skills

What we offer

• ▹Open, collaborative, dynamic and diverse culture
• ▹Generous monthly allowance for lessons on Preply.com, Learning & Development budget and time off for self-development
• ▹Competitive financial package with equity, leave allowance and health insurance
• ▹Relocation package to join the Barcelona hub if you are not based there
• ▹Free mental health support platforms
• ▹Access to Gympass-partnered wellness and gym centers in Spain

About the company

Preply is an ed-tech company combining the best tutors with cutting-edge AI to create personalized learning journeys. Its platform connects 100,000+ tutors teaching 90+ languages with learners in 180 countries, and it recently closed a $150M Series D.