Senior Backend Engineer - TypeScript

In 2024, Google selected LearnTube for its AI First Accelerator, further fueling our growth. Alongside investment from funds of visionaries like Reid Hoffman and Naval Ravikant, we set out on a mission to reimagine how billions will learn and grow. Want to be the driving force behind our next wave of growth? As a Senior Backend Engineer - TypeScript at LearnTube. ai you will ship the backbone that powers 4 million learners in 64 countries - owning APIs that crunch 1 billion learning events & the AI that supports it with <200 ms latency. **What You'll Do:** - Build and scale TypeScript microservices on Node.js handling ~800 requests/second today, growing to 3x capacity within a year while holding sub-200ms p95 latency - Power the quiz-scoring and AI-tutor engines that process millions of learning events every day - Design strongly typed APIs and shared contracts that keep services, clients, and data models in sync end-to-end - Design scalable, secure backend systems using Postgres, MongoDB, Redis, and SQS - Write efficient, non-blocking async code and profile the event loop, memory, and throughput for low-latency workloads - Deploy containerized services via NGINX on AWS and GCP Kubernetes infrastructure - Own GitLab CI/CD pipelines, including type checks, linting, and tests, so we can ship to production several times a week - Drive reliability toward 99.9% uptime with Prometheus and Grafana monitoring - Build LLM inference, streaming, and vector-search endpoints in collaboration with the AI team - Take features from design to production within two weeks **Must-Have Requirements:** - 4+ years of backend development, with at least 3 years writing production TypeScript (strict mode) - Strong command of the TypeScript type system: generics, utility types, discriminated unions, and type-safe error handling - Hands-on experience with a production framework such as NestJS, Fastify, or Express - Experience with typed data layers and runtime validation (e.g. Prisma, Drizzle, TypeORM, Zod) - Deep understanding of the Node.js event loop, async patterns, and performance tuning - Hands-on experience with Docker and container orchestration - Production experience with GitLab CI/CD and AWS (EC2, S3, SQS) or GCP (GKE/Compute) - SQL/NoSQL expertise (Postgres, MongoDB) and solid system design fundamentals **Nice-to-Have Skills:** - End-to-end type-safe APIs (tRPC, GraphQL codegen, OpenAPI-generated clients) - Monorepo tooling (Nx, Turborepo, pnpm workspaces) - Kubernetes at scale, Terraform - Kafka, BullMQ, or other queue/streaming systems - AI/ML inference services experience (LLMs, vector databases, streaming responses) - Observability tools (Prometheus, Grafana, OpenTelemetry) **How We Hire** No take-home. No whiteboard trivia. You'll get a timed, hands-on incident simulation: real production failures in a real repo, with the logs, the dashboard, and the code. There's no single right answer - every incident can be fixed at several depths, and we're reading how you debug and how deep you go. Here's the link for you to get started on it - https://workat.learntube.ai/tech/typescript **The Team** Google's Top 20 Startups to Watch. Google AI First Accelerator '24. Backed by funds of Naval Ravikant, Reid Hoffman, and founders/CXOs from Udemy, Flipkart, Jupiter, PayU, Edmodo & Inflection AI. Featured on CNBC-TV18. 11–50 people building something that changes how people learn, permanently. **Why work with us**: state-of-the-art generative AI on a backend you own. Full ownership from ideation to deployment. Direct access to founders and advisors, including the CTO of Inflection AI. Three years of growth packed into one, and Monday morning meetings you actually look forward to.