Senior Backend Engineer - FastAPI at LearnTube.ai · Remote, Mumbai · 3 - 6 years · ₹18L - ₹32L / yr (ESOP available) · Raised funding · Remote friendly · Posted 28 Jul 2026

Required Core Tech Stack:
We're looking for engineers with hands-on experience across most of the following technologies:
- Python Backend Development (3+ years)
- FastAPI (2+ years of production experience required)
- PostgreSQL
- MongoDB
- Redis
- Docker
- Celery or equivalent async task queues
- REST APIs & Microservices
- AWS/GCP
- GitLab CI/CD
The selected Sr. Backend engineer 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:
At LearnTube, we’re pushing the boundaries to revolutionize how the world learns. As a Senior Backend Engineer, your roles and responsibilities will include:
- Shipping 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 (Applicants without these skills are unlikely to move forward):
- 3+ 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)
- Observability: Prometheus, Grafana, OpenTelemetry
Why LearnTube?
- Build AI products at global scale – Your work will power learning experiences for 4M+ learners across 64 countries.
- Work directly with experienced founders – Collaborate closely with founders who are deeply involved in product and engineering decisions, giving you ownership and a direct impact on the product roadmap.
- Learn fast – Join a high-performing team where you'll own features end-to-end and solve challenging backend and distributed systems problems.
- Recognized AI startup – LearnTube is a Google Top 20 AI Startup and part of Google's AI First Startup Accelerator, with access to cutting-edge AI technology and mentorship.
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, multimodal AI, 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.
- Rapid 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 engineers and innovators, 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.

About LearnTube.ai
About
At LearnTube, we're reimagining how the world learns making education accessible, affordable, and outcome-driven using Generative AI. Our platform turns scattered internet content into structured, personalised learning journeys using:
- AI-powered tutors that teach live, solve doubts instantly, and give real-time feedback
- Frictionless delivery via WhatsApp, mobile, and web
- Trusted by 3.2 million learners across 64 countries
Founded by Shronit Ladhani and Gargi Ruparelia, both second-time entrepreneurs and ed-tech builders:
- Shronit is a TEDx speaker and an outspoken advocate for disrupting traditional learning systems.
- Gargi is one of the Top Women in AI in India, recognised by the government, and leads our AI and scalability roadmap.
Together, they bring deep product thinking, bold storytelling, and executional clarity to LearnTube’s vision. LearnTube is proudly backed by Google as part of their 2024 AI First Accelerator, giving us access to cutting-edge tech, mentorship, and cloud credits.
Tech stack
Candid answers by the company
At LearnTube, we’re on a mission to make learning accessible, affordable, and engaging for millions of learners globally. Using Generative AI, we transform scattered internet content into dynamic, goal-driven courses with:
- AI-powered tutors that teach live, solve doubts in real time, and provide instant feedback.
- Seamless delivery through WhatsApp, mobile apps, and the web, with over 1.4 million learners across 64 countries.
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- 3 - 7 years of experience in cloud-native applications (Azure strongly preferred) using Python.
- Thorough understanding of Object-Oriented Programming (OOP) design and practices.
- Strong RDBMS experience (PostgreSQL, MS SQL etc.) designing tables & writing queries.
- Great command of design patterns (especially integration design patterns)
Job description
We are looking for an experienced Python developer to join our engineering team and help us create dynamic software applications for our clients. In this role, you will be responsible for writing and testing scalable code, developing back-end components, and integrating user-facing elements in collaboration with front-end developers.
Responsibilities:
- Coordinating with development teams to determine application requirements.
- Writing scalable code using Python programming language.
- Testing and debugging applications.
- Developing back-end components.
- Integrating user-facing elements using server-side logic.
- Assessing and prioritizing client feature requests.
- Integrating data storage solutions.
- Coordinating with front-end developers.
- Reprogramming existing databases to improve functionality.
- Developing digital tools to monitor online traffic.
Requirements:
- Bachelor's degree in Computer Science, Computer Engineering, or related field.
- 2-7 years of experience as a Python Developer.
- Expert knowledge of Python and Flask framework and Fast API.
- Solid experience in MongoDB, Elastic Search.
- Work experience in Restful API
- A deep understanding and multi-process architecture and the threading limitations of Python.
- Ability to integrate multiple data sources into a single system.
- Familiarity with testing tools.
- Ability to collaborate on projects and work independently when required.
- Excellent troubleshooting skills.
- Good project management skills.
SKILLS:
- PHYTHON
- MONGODB
- FLASK
- REST API DEVELOPMENT
- TWILIO
Job Type: Full-time
Pay: ₹10,000.00 - ₹30,000.00 per month
Benefits:
- Flexible schedule
- Paid time off
Schedule:
- Day shift
Supplemental Pay:
- Overtime pay
Ability to commute/relocate:
- Chennai, Tamil Nadu: Reliably commute or planning to relocate before starting work (Required)
Experience:
- Python: 1 year (Required)
Work Location: In person
GetSupp is looking for a Software Engineer to join its core team. You will be a key member of our team and will develop applications that help simplify a user's health discovery journey.
You will be responsible for the end-to-end development & execution of our core product offerings.
- Own & execute critical features end-to-end and work directly with the founding team to drive customer impact
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- Develop, test and release schedule critical, high-quality features that will help build a polished product
- 2+ years of hands-on programming experience in Python language
- Experience with application development using Django or Flask
- Experience with MySQL / Postgres / NoSQL and hold a solid understanding of database design concepts
- Experience in API Design with REST & GraphQL
- Experience with caching methodologies using Memcached or Redis
- Experience with search technologies such as Elasticsearch, Lucene or Solr is a plus
- Experience with deployment and infra management using AWS, Azure or GCP is a plus
- A degree in Computer Science/Engineering or an equivalent degree
About us:
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! https://www.happyfox.com/
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- Developing and maintaining all server-side network components.
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https://www.alivecor.com/">AliveCor, the pioneer of the smartphone EKG, with millions of EKGs from a large and growing user base, seeks a Senior Software Engineer (Backend). You will be an integral member of our engineering team.
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- Software Engineer on the backend team working in the following environment: Go, Ruby on Rails, TDD/BDD with RSpec, PostgreSQL, Heroku, AWS.
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- Senior Software Engineer ready to build highly visible apps
- Engineers who can raise the skill level of their teammates
- Experience working with Go and Rails
- Experience implementing Service Oriented Architecture or Microservices
- Good intuition for weighing trade-offs
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- Eagerness and willingness to learn new technologies
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About Us
AliveCor is on a mission to define modern healthcare through data, design and disruption. We’ve pioneered the creation of FDA-cleared machine-learning techniques, transformed wearable medtech to put proactive heart care at everyone’s fingertips. Kardia is the most clinically validated mobile EKG technology. AliveCor was named as one of the Top 10 Most Innovative Companies in Health for 2017 by Fast Company as part of the publication’s annual ranking of the world’s Most Innovative Companies. AliveCor was awarded the 2015 Tech Pioneer by the World Economic Forum and one of the 50 Smartest Companies in 2015 by the MIT Technology Review. AliveCor recently announced a collaboration with Mayo Clinic that will result in new machine learning capabilities to unlock previously hidden health indicators in EKG data, potentially improving heart health as well as overall health care for a variety of conditions. AliveCor is a privately held company headquartered in Mountain View, CA.
AliveCor is an equal opportunity employer and will not discriminate against any employee or applicant on the basis of age, colour, disability, gender, national origin, race, religion, sexual orientation, or any other classification protected by federal, state, or local law.
Watch the following video demonstrating our product.
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