Senior II – Back-End Engineer

{ “@context”: “http://schema.org”, “@type”: “JobPosting”, “title”: “Senior II – Back-End Engineer”, “description”: “

Senior II Backend Engineer

Preply is a platform that creates life‑changing learning experiences. Our mission is to combine the best tutors with cutting‑edge AI to personalize learning journeys and keep learners motivated.

What you’ll be doing

  • Own and drive technical vision across squads
  • Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third‑party vendors.
  • Scope and lead cross‑functional initiatives involving design, data, product, security, and other engineering teams.
  • Design and implement scalable backend systems, data pipelines, and integrations with third‑party platforms
  • Mentor and coach junior and middle engineers across squads
  • Improve performance, tracking, monitoring, and reliability of our systems with an eye on long‑term scalability.
  • Collaborate closely with PMs, EMs, designers, and analysts to make data‑informed, user‑centered decisions.
  • Champion engineering best practices: test automation, documentation, observability, and quality‑first culture.

What you need to succeed

  • Exposure to architectural patterns of a large, high‑scale web application (e.g., well‑designed APIs, high‑volume data pipelines, efficient algorithms)
  • Proven experience leading complex, ambiguous, or greenfield projects end‑to‑end
  • Strong communication and cross‑functional collaboration skills (English level B2+)
  • Willingness to be on‑call for your squad (1 week every 5 weeks)

Nice to have

  • Side projects or product ownership experience.
  • Experience designing systems for marketing attribution, experimentation platforms, or recommendation engines.
  • Familiarity with cloud platforms (AWS/GCP) and modern DevOps practices.
  • Familiarity and willingness to support small JS/TS tasks when needed.

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed‑Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

#J-18808-Ljbffr”, “datePosted”: “2026-05-17”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Preply”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__435473435__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=33” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }
Company: Preply
Apply for the Senior II – Back-End Engineer
Location: London
Job Description:

Senior II Backend Engineer

Preply is a platform that creates life‑changing learning experiences. Our mission is to combine the best tutors with cutting‑edge AI to personalize learning journeys and keep learners motivated.

What you’ll be doing

  • Own and drive technical vision across squads
  • Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third‑party vendors.
  • Scope and lead cross‑functional initiatives involving design, data, product, security, and other engineering teams.
  • Design and implement scalable backend systems, data pipelines, and integrations with third‑party platforms
  • Mentor and coach junior and middle engineers across squads
  • Improve performance, tracking, monitoring, and reliability of our systems with an eye on long‑term scalability.
  • Collaborate closely with PMs, EMs, designers, and analysts to make data‑informed, user‑centered decisions.
  • Champion engineering best practices: test automation, documentation, observability, and quality‑first culture.

What you need to succeed

  • Exposure to architectural patterns of a large, high‑scale web application (e.g., well‑designed APIs, high‑volume data pipelines, efficient algorithms)
  • Proven experience leading complex, ambiguous, or greenfield projects end‑to‑end
  • Strong communication and cross‑functional collaboration skills (English level B2+)
  • Willingness to be on‑call for your squad (1 week every 5 weeks)

Nice to have

  • Side projects or product ownership experience.
  • Experience designing systems for marketing attribution, experimentation platforms, or recommendation engines.
  • Familiarity with cloud platforms (AWS/GCP) and modern DevOps practices.
  • Familiarity and willingness to support small JS/TS tasks when needed.

Diversity, Equity, and Inclusion

Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed‑Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status.

#J-18808-Ljbffr…

Posted: May 17th, 2026