Senior Full Stack Developer

Job Description We are a small London startup with the ambition to change education with ML-powered tutoring. Our flagship product is a mobile application for teaching English to intermediate and advanced learners.Were on the verge of solving one of the biggest challenges in education making high-quality, personalised learning accessible to everyone. What was once technologically impossible is now within our grasp.Were looking for a Senior Full Stack Developer to join our growing development team.What you will do Design and implement a new high-scale system for millions of users.Build convenient CI/CD processes and testing pipelines to support quick iterative development and system stability.Work on ML model development with our team to build robust data pipelines and deploy ML models.Analyse large corpora of data and build real-time recommendation systems.Work with large amounts of data in different modalities (text, video, images, audio)Work in a very cross-functional team, side by side with mobile developers, product managers, ML engineers, and designers.Essential skills Build high-load applications from scratch.Deep knowledge of AWS.Architecture planning and estimation skills (time, users, traffic, money, algorithmic complexity, cache, etc.).Architecture scalability and simplicity.Research skills (new APIs, libraries, services, and their estimations).CI/CD automation pipelines.Proficiency with Terraform and Docker.SOLID, KISS principles, decomposition principles, and resolving monolith vs. microservices trade-offs.Experience with SQL and NoSQL databases.Best practices in building scalable mobile APIs (REST, HTTPS, etc.).Good principles of security management (secrets, protocols, etc.).Experience with some Python web frameworks (Django, Flask, FastAPI, etc.).Desirable Skills Can speak, or learning to speak, more than one languageExperience with real-time databases.Experience with in-memory databases.Experience with frontend frameworks.Experience in developing educational products.Knowledge-sharing experience (tech talks, articles, YouTube videos, etc.).Experience (even non-production) with different types of programming languages: interpreted, compiled, with garbage collection, manual memory management, reference counting memory management, etc.What we can offer A real-deal startup adventure: you'll be hopping on a major project while it's still in the works!A crew all about people and products.Work from our London office.Freedom to suggest, implement, and test ideas.Unlimited learning & development budget.We also offer substantial relocation assistance to support your move, if required.Interview Process Intro call3 technical interviews, which will all coverProblem SolvingArchitecture Design and Product DesignDomain/Platform KnowledgeAfter all interviews, we would like to invite you to work with us in our London office for 1-2 paid test days. If everything goes well, we will make an offer to the successful candidate.

Created: 2025-12-14