Senior Backend Engineer - Python

## About the Role 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 Backend Developer at LearnTube.ai you will ship the backbone that powers 2.3 million learners in 64 countries - owning APIs that crunch 1 billion learning events & the AI that supports it with <200 ms latency. Want to fast-track your application? Don't wait for your resume to get picked! We know you are more than your resume. Play LearnTube's 20-minute Backend Incident Game and show us how you actually think. No setup. No boring tests. No ghosting. Get your result instantly. Strong runs move straight to interview review, and exceptional runs get flagged to the founders. Prove your backend instincts quick → ## What You'll Do At LearnTube, we're pushing the boundaries of Generative AI to revolutionise how the world learns. As a Backend Engineer, you will be building the backend for an AI system and working directly on AI. Your roles and responsibilities will include: - Ship Micro-services – Build FastAPI services that handle ≈ 800 req/s today and will triple within a year (sub-200 ms p95). - Power Real-Time Learning – Drive the quiz-scoring & AI-tutor engines that crunch millions of events daily. - Design for Scale & Safety – Model data (Postgres, Mongo, Redis, SQS) and craft modular, secure back-end components from scratch. - Deploy Globally – Roll out Dockerised services behind NGINX on AWS (EC2, S3, SQS) and GCP (GKE) via Kubernetes. - Automate Releases – GitLab CI/CD + blue-green / canary = multiple safe prod deploys each week. - Own Reliability – Instrument with Prometheus / Grafana, chase 99.9 % uptime, trim infra spend. - Expose Gen-AI at Scale – Publish LLM inference & vector-search endpoints in partnership with the AI team. - Ship Fast, Learn Fast – Work with founders, PMs, and designers in weekly ship rooms; take a feature from Figma to prod in < 2 weeks. ## What makes you a great fit? ### Must-Haves: - 4+ yrs Python back-end experience (FastAPI) - Strong with Docker & container orchestration - Hands-on with GitLab CI/CD, AWS (EC2, S3, SQS) or GCP (GKE / Compute) in production - SQL/NoSQL (Postgres, MongoDB) + You've built systems from scratch & have solid system-design fundamentals ### Nice-to-Haves - k8s at scale, Terraform, - Experience with AI/ML inference services (LLMs, vector DBs) - Go / Rust for high-perf services - Observability: Prometheus, Grafana, OpenTelemetry ## About Us At LearnTube, we're on a mission to accelerate a billion careers. We are growing fast; already helping 2.8 Million global users learn & showcase their skills in an accessible, affordable, and engaging manner. At LearnTube we don't build courses, we build AI products that create, deliver & sell personalised courses & career solutions, that are unique to each person's goals & backgrounds. We are backed by Google and funds of Bill Gates, Naval, Reid Hoffman & Founders/CXOs of Udemy, Maven, Flipkart, Jupiter, Edmodo, PayU, Inflection AI, etc. ## Meet the Team LearnTube was founded by Shronit Ladhani and Gargi Ruparelia, who bring deep expertise not only in product & education but also in building & scaling large businesses. Shronit, is an educator, TEDx speaker, state topper & early angel investor in some of India's top startups. While Gargi has previously built the B2B-to-B2C & offline-to-online transition that helped her last business go public! We are a young, passion (and coffee) fueled team comprising of IIT-grads to college dropouts who are all re-defining how the World learns. ## Why Work With Us? At LearnTube, we believe in creating a work environment that's as transformative as the products we build. Here's why this role is an incredible opportunity: - Cutting-Edge Technology: You'll work on state-of-the-art generative AI applications, leveraging the latest advancements in LLMs, Agents, and real-time systems. - Autonomy and Ownership: Experience unparalleled flexibility and independence in a role where you'll own high-impact projects from ideation to deployment. - Exponential Growth: Accelerate your career by working on impactful projects that pack three years of learning and growth into one. - Founder and Advisor Access: Collaborate directly with founders and industry experts, including the CTO of Inflection AI, to build transformative solutions. - Team Culture: Join a close-knit team of high-performing humans, where every voice matters, and Monday morning meetings are something to look forward to. - Mission-Driven Impact: Be part of a company that's redefining education for millions of learners and making AI accessible to everyone.