Preply

Senior II - Back-End Engineer

Preply
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25 days ago
London, United KingdomSenior

Responsibilities

  • Own, shape, and drive technical direction across multiple engineering squads.
  • Lead complex, ambiguous greenfield initiatives from idea through delivery.
  • Design, build, and evolve scalable backend systems using Python/Django, data pipelines, and third-party integrations.
  • Partner with product managers, engineering managers, and senior stakeholders on roadmaps, technical trade-offs, and investment decisions.
  • Raise engineering standards through mentoring, architectural reviews, documentation, automation, and continuous improvement.
  • Drive reliability, observability, performance, and operational excellence across multiple services and teams.
  • Participate in the on-call rotation one week every five weeks.

Requirements

  • Experience with architectural patterns of large, high-scale web applications, including well-designed APIs, high-volume data pipelines, and efficient algorithms.
  • Proven experience leading complex greenfield projects end-to-end.
  • Track record of shaping architectural decisions and engineering standards across multiple teams or domains.
  • Ability to shape product scope, challenge requirements, and focus on customer value.
  • Strong English communication skills at B2+ level and ability to influence senior peers and leadership through clear reasoning and technical judgment.
  • Hands-on experience using Agentic AI beyond code generation, including setting quality gates and safety nets and proposing AI-native engineering workflows.
  • Willingness to participate in the team's on-call rotation.
  • Python experience is not mandatory; relevant experience with Java, Node.js, Ruby, Scala, .NET, PHP, or Go is welcomed.

Benefits

  • Open, collaborative, dynamic, and diverse culture.
  • Monthly allowance for lessons on Preply.com, a Learning & Development budget, and time off for self-development.
  • Financial package including equity, leave allowance, and health insurance.
  • Access to free mental health support platforms.
  • Opportunity to support learners and tutors through language learning and teaching across 175 countries.

Tech Stack

DjangoGoJava.NETNode.jsPHPPythonRubyScala

Categories

Preply

About Preply

10,000+ employees
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