Senior Backend Developer - Tech Lead

We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing.Our approach is human-led, tech-enabled - and it’s creating real impact.We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning.As a category-defining company, we’re shaping what the future of learning looks like at global scale.Every Preply lesson sparks change, fuels ambition, and drives progress that matters.Joining Preply means helping define the future of education at global scale, and building something that truly matters for millions of people, every day.The Preply Engineering Team provides the tools to help unlock human potential through learning.We implement A/B tests to prove the value of our initiatives and improve our product based on data and students’ and tutors’ feedback.As part of our commitment to ensuring high-quality products, we prioritize monitoring and metrics analysis to identify areas for optimization and ensure our services are performing at their best.As a Senior II Backend Engineer, you’ll drive technical direction across multiple squads, lead high-impact initiatives, and build the systems that power Preply’s global growth engine.Python is our primary language, but prior experience with it isn’t mandatory.We take a tech-agnostic approach and welcome engineers from various backgrounds, such as Java, Node.js, Ruby, Scala, .NET, PHP, or Go.Design, build, and evolve scalable backend systems using Python/Django, data pipelines, and third-party integrations that support long-term business growth.Partner with PMs, EMs, and senior stakeholders to shape roadmaps, make technical trade-offs, and guide investment decisions.Drive reliability, observability, performance, and operational excellence across multiple services and teams.Foster a quality-first culture through automation, documentation, and continuous improvement.What you need to succeedExposure 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, greenfield projects end-to-endA track record of shaping architectural decisions and setting engineering standards that impact multiple teams or domains.Strong communication (English level B2+) with the ability to influence senior peers and leadership through clear reasoning and strong technical judgment.reserving judgment for architecture, business logic, and security, using AI as a thought partner and able to set up quality gates and safety nets to enhance existing engineering workflows and propose AI-native alternatives.Why you’ll love it at PreplyAn open, collaborative, dynamic, and diverse culture.com, Learning & Development budget, and time off for your self-development;A competitive financial package with equity, leave allowance, and health insurance;We offer an attractive relocation package to join us in our Preply Barcelona Hub;We do it for learners - For both Preply and tutors, learners are why we do what we do.Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.Now is the time - In a fast-paced world, it matters how quickly we act.Growth mindset - We proactively seek growth opportunities and believe today’s best performance becomes tomorrow’s starting point.Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion.Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree.We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company.

Design, build, and evolve scalable backend systems using Python/Django, data pipelines, and third-party integrations that support long-term business growth.Partner with PMs, EMs, and senior stakeholders to shape roadmaps, make technical trade-offs, and guide investment decisions.Drive reliability, observability, performance, and operational excellence across multiple services and teams.Foster a quality-first culture through automation, documentation, and continuous improvement.What you need to succeedExposure 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, greenfield projects end-to-endA track record of shaping architectural decisions and setting engineering standards that impact multiple teams or domains.Strong communication (English level B2+) with the, ability to influence senior peers and leadership through clear reasoning and strong technical

judgment.reserving judgment for architecture, business logic, and security, using AI as a thought partner and able to set up quality gates and safety nets to enhance existing engineering workflows and propose AI-native alternatives.Why you’ll love it at PreplyAn open, collaborative, dynamic, and diverse culture.com, Learning & Development budget, and time off for your self-development;A competitive financial package with equity, leave allowance, and health insurance;We offer an attractive relocation package to join us in our Preply Barcelona Hub;We do it for learners - For both Preply and tutors, learners are why we do what we do. Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.Now is the time - In a fast-paced world, it matters how quickly we act. Growth mindset - We proactively seek growth opportunities and believe today’s best performance becomes tomorrow’s starting point. Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company.