Senior Back-End Engineer (Python)

At Preply, we are unlocking human potential through learning.

We believe learning with a great tutor is life-changing. That’s why we match online tutors from across the globe with learners and empower them to create live language classes with AI-powered tools and learning materials. This is how we deliver progress, create engagement and keep our global community of learners motivated. So far, over 32,000 tutors have given more than 15 million lessons to learners from over 175 countries.

The Preply Engineering Team provides the tools to help unlock human potential through learning.

We work primarily with Python/Django to build scalable and robust applications. 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. Our team is made up of talented engineers who are passionate about solving complex problems and developing innovative solutions to drive our company's success.

At Preply, we release our product 50-60 times per day by leveraging top-notch CI/CD processes. As a fast-growing company we have diverse technical challenges (sometimes we even write about them on our Engineering Blog) that will allow you to develop your skills at scale.

Meet the team!

You will be joining the Payments team, a cross-functional unit composed of 5 dedicated engineers, a Product Manager, Tech Lead, Data Analytics, and an Engineering Manager. Our team is primarily focused on the optimization of payment providers, payouts, fraud detection, and finance reconciliations. We work collaboratively to ensure the most secure and efficient payment transactions for our users.

What you’ll be doing:

• Exploring new monetization initiatives for the company
• Developing features and A\B tests focused on the Checkout page and payment processing
• Supporting the payments engineering strategy to design and implement a Universal Checkout and Ordering architecture across the company
• Improving the observability and quality of the system, striving for best-in-class standards in such a critical area as payments
• Collaborating with Product Manager, Data Science, and Finance leaders to design effective fraud prevention mechanisms
• Working directly with payment providers to ensure the lowest fees and stable integration for Preply

What you need to succeed:

• A great collaborator with excellent verbal and written communication skills. Minimum B2 English level.
• Senior-level experience building modern applications in Python\ Django
• React or other frontend-focused language experience to occasionally contribute to our FE systems.
• Be data-oriented. Work closely with production data and our Data Analyst to find insights. SQL, Amplitude, Looker skills are beneficial.
• Be pragmatic. Balance short-term speed of development with the long-term technical quality of our systems.
• Be a leader. You will need to solve problems with a high degree of uncertainty and many stakeholders
• Expertise in troubleshooting issues, identifying the root cause, mitigating it, and adding setting up safeguards to prevent future issues.
• Bring your voice and ideas to the team, thinking beyond the code and about our customers.
• Willingness to be on-call for your squad (1 week every 5 weeks).

Why you’ll love it at Preply:

• Open, collaborative, dynamic and diverse culture.
• Generous monthly allowance for lessons on Preply.com .
• Learning & Development budget, including time off for your self-development.
• Competitive financial package with equity, leave allowance and health insurance.
• Access to free mental health support platforms.
• Opportunity to shape the lives of learners and tutors from over 175 countries through language learning and teaching.

Our Principles

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• 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. Now is the time to make great things happen.
• Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.
• Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.
• Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.
• Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.
• Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.
• One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.

Diversity, Equity, and Inclusion

Preply is committed to creating a diverse and inclusive environment where people from all backgrounds can thrive. Different opinions and viewpoints are key ingredients in our success as a multicultural Ed-Tech company.

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. Together, we are The World Class.

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