Technical Architect (.Net)

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 the job

The ideal candidate will be familiar with the full software design life cycle. They should have experience in designing, coding, testing and consistently managing applications They should be comfortable coding in a number of languages and have an ability to test code in order to maintain high-quality code.

Job Responsibilities :

• Design and develop scalable systems using .Net Core/ASP.Net MVC and SQL.
• Writing T-SQL scripts, stored procedures and performance tuning.
• Migrating applications to newer technologies
• Understanding requirements and convert into technical designs.

Qualifications

• Bachelor's degree in Computer Science or relevant field
• 1 to 4+ years of experience working with .NET or relevant experiences
• Experience developing web-based applications in C#, HTML, JavaScript, VBScript/ASP, or .NET
• Experience working with MS SQL Server and MySQL Knowledge of practices and procedures for full software design life cycle

You'll be working on : .Net WEB API projects, .Net core Version 6.0, Cloud projects using Azure like Working with DataBricks, EventHubs, Cosmos DB, WebHook, etc., SQL DB, Postgres SQL, Migration projects, DataLake projects.

• Manage different versions of complicate code and distribute them to different teams in the organization utilizing TFS.
• Develop an ASP.Net application to input and manage a production schedule, production statistical analysis and trend reporting.
• Create routines for importing data utilizing XML, CSV and comma delimitate files.
• Filter and cleanse OLTP data with complex store procedures and SSIS packages in the staging area.
• Develop a dimensional database and OLAP cube using SSAS for analysis, maintenance and good customer service.
• Involve in development and implementation of SSIS, SSRS and SSAS application solutions for various business units across the organization.
• Extract the data from XML and load it to dimensional model.
• Maintain SQL scripts, indexes, complex queries for data analysis and extraction.
• Create advanced reports like dashboard and scoreboard using SharePoint and power pivot for better presentation of data.
• Create cubes in SSAS reports which require complex calculations such as calculation of the premium for a particular policy.
• Create SharePoint sub sites, lists, libraries, folders and apply site permissions according to the given requirement.
• Work with business analysts, subject matter experts, and other team members to determine data extraction and transformation requirements.
• Develop T-SQL functions and store procedures to support complex business requirements.
• Create and configure an OLTP replication database for disaster recovery purpose.
• Designed/Implemented/Maintain OLAP servers and processes to replicate production data to the server.