Sr Software Developer

Role Overview:

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.

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What You'll Do:

At LearnTube, we’re pushing the boundaries of Generative AI to revolutionize how the world learns. As a Backend Engineer, 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:

• 2+ 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 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.

Meet the Founders: 

LearnTube was founded by Shronit Ladhani and Gargi Ruparelia, who bring deep expertise in product development and ed-tech innovation. Shronit, a TEDx speaker, is an advocate for disrupting traditional learning, while Gargi’s focus on scalable AI solutions drives our mission to build an AI-first company that empowers learners to achieve career outcomes. We’re proud to be recognised by Google as a Top 20 AI Startup and are part of their 2024 Startups Accelerator: AI First Program, giving us access to cutting-edge technology, credits, and mentorship from industry leaders.

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.

Job Description

We are looking for a passionate Search Specialist Backend Engineer to join our team. This role will focus on improving and optimizing our search capabilities to enhance user experience, scalability, and relevancy.

Location - Bangalore

Designation - Senior Software engineer - Search Specialist

Responsibilities:

● Design, develop, and maintain the search application, ensuring performance, and scalability.

● Collaborate with cross-functional teams to define and implement search features and improvements.

● Ensure search results are relevant by employing techniques like ranking, personalization, and recommendation.

● Work on complex problems related to search algorithms, data structures, and distributed systems.

● Implement logging, metrics, and monitoring for search services.

● Optimize search by tuning the underlying algorithms, experimenting with new techniques, and leveraging tools like Elasticsearch, Solr, etc.

● Maintain and improve existing search functionalities while ensuring backward compatibility.

● Stay updated with the latest advancements in search technology and industry best practices.

Basic Qualifications:

● Bachelor's or Master's degree in Computer Science, Information Systems, or a related field.

● Experience with search engines like Elasticsearch, Solr, or similar technologies.

● Solid understanding of algorithms, data structures, and distributed systems.

● Proficiency in Python and Django.

● Familiarity with RESTful APIs and backend services.

● Preferred Qualifications:

● Experience with natural language processing (NLP) or machine learning as applied to search.

● Knowledge of various search relevance techniques and ranking algorithms.

● Experience in a cloud environment (e.g., AWS, Google Cloud, Azure). ● Familiarity with containerization technologies such as Docker and Kubernetes.

● Strong analytical and debugging skills. Personal Attributes:

● Strong communication skills and ability to collaborate effectively in a team setting.

● A keen interest in improving user experience through search.

● Proactive, self-motivated, and able to work in a fast-paced environment

 Senior backend developers

Minimum 5 years of experience 

Backend skills: MongoDB, Node.js 

Remote work available

(We prefer individual developers over agencies or IT providers)

Looking to hire a single backend engineer who will become a part of the core team, with the track to become a part of the leadership at our company.

Candidate should have worked in startups, possess strong programming skills in Python, displays a sense of ownership and is highly energetic and eager to learn state-of-the-art tech and ML.

A minimum of 2 years of relevant experience is preferred.

2022 or later year pass outs - please apply only if you have relevant full-time and at least 2 prior internships experience

Representative (not exhaustive) responsibilities:

• Assess the current design and infrastructure of the backend server, and continuously implement enhancements to make the systems more robust, reliable and responsive
• Design, implement, test, and deploy APIs with Python on Linux servers
• Enhance back-end functionality and integrate with the front end to deliver a fully functional product
• Implement and set up automated tests to periodically test backend infrastructure for reliability, security and performance
• Design new data pipelines to enable the production deployment of new models
• Mentor junior employees and interns in the company
• Additionally, interest and ability to contribute to the continuous enhancement of our state-of-the-art NLP model pipeline and Inferencing engine is a big plus
• Be ready to roll up your sleeves and participate in customer calls, understand our ICP well, do research around product features, etc.

Fast Track Your Application

Think about the ICP for ContractKen. Sign up for a trial plan, experience the product and provide feedback on how to improve the current experience of the product to add immediate value to the ICP. We don't need you to fully code any feature in its entirety and are not looking for free work. The idea is to identify folks who get** what we are trying to do with ContractKen and find faster alignment with the right candidate.

Do not apply if

You're looking for your first, real-world model building, ML/AI role. We believe that deploying existing models (open source and proprietary) in production and delivering real business value to our customers is 10x more important than hyperparameter tuning or the latest algorithm implementation. While we'd love to entertain experienced ML data scientists, the emphasis on MLOps is as much as it is on experimentation.

 2+ years experience as a developer with a proven track record in on-time and successful deliveries.

- Must be highly proficient in NodeJS, Javascript and MySQL with Microservices (REST web services )

- Work end to end on micro-services and SPAs built on cutting-edge technologies like Nodejs (Strong practical experience preferred)

- Strong knowledge of database & web applications.

- Preferred : grunt, wagner, npm, passport, redix, chai

- Excellent problem solving and communication skills, so that you are able to articulate technical concepts to the team, also excellent development, and debugging skills

- Ability to learn, act, and thrive in a fast-paced environment with a distributed team

Duties & Responsibilities :

- Should be taking requirements to design and building reusable modules.

- Building, scaling and performance tuning.

- Advance understanding of front-end technologies, such as HTML5 and CSS3.

- Advance understanding in AWS, NPM (Node JS Package Manager), GIT and Unit testing.

- Strong work experience in Design Patterns and Algorithms.

- Experience with debugging, troubleshooting and problem-solving issues.

- Must have strong communication skills.

About PoshVine: 

PoshVine aspires to become the world's leading transaction-driven loyalty and engagement platform by providing a mutually beneficial ecosystem for people, banks and retailers. Our products around programmatic offers, rewards, and loyalty help retailers increase contextual engagement and financial institutions increase share of spends, while end-users maximize their rewards and savings. PoshVine works with all the global payment networks and many marquee financial institutions, including 7 of the top 10 banks in India. 

Backend Development at PoshVine:

We are building payment-linked real-time engagement tools embedded within banking and payment journeys. Our core engineering team strives to build solid backend foundations, infrastructure and a solid network of microservices. Apart from regular work, you can expect:

• Freedom to evaluate and introduce new tools, libraries and coding standards.
• Work on developer productivity and platform tooling.
• Evangelise tech and share knowledge in internal and external forums.
• Contribute to Product and Design ideas and implement them like it’s your own product. 

Roles & Responsibilities: 

1. Be involved in product and design decisions, and drive implementations. 
2. Help us scale the payment-linked loyalty infrastructure to every payment product used in India. Develop platform features for/with reusable code.
3. Work with IT/tech SPOCs from Banks and Fintechs to achieve seamless API integrations, resolve concerns, and move forward with program delivery and implementation. 
4. Tag team with internal and external stakeholders to problem solve and work with banks to test out UAT/Production and create a rollout plan for the same. 
5. Perform in-depth research and identify sources off production issues surrounding the application. 
6. Make architectural decisions (microservices, choice of development frameworks and tools, database optimisations, load handling)
7. Proficient in Full stack development skills spanning the entire spectrum from:

1. Database: MySQL, PostgreSQL
2. Backend: Ruby on Rails
3. Front End: Web Development frameworks  (Angular / React / Vue JS)
4. Deployment: Capistrano, Chef, AWS, EC2, Git

You’ll be a good fit if you possess: 

1. A strong product design sense.
2. Good experience in working with Ruby on Rails, Postgres, Python.
3. Proven ability to understand end user requirements, formulate use cases and come up with effective solutions.
4. Good understanding of REST APIs and the web in general.
5. Ability to build a feature from scratch & drive it to completion.
6. A willingness to learn new technology, whatever lets you deliver the best product.
7. Possess excellent data management skills: 
1. How to structure databases that can scale
2. How to optimise database queries
3. Complying with the latest regulations around data for each geography
4. Managing the infrastructure that the data resides on to ensure 99.9% uptime across geographies
8. You are comfortable working on CI/CD toolchain, Kubernetes, etc.
9. 3+ years of experience. 

• Web development using PHP & experience in coding on MVC architecture of Laravel
• REST API knowledge is a must with oAuth security
• Understanding of mobile apps with REST API integration, firebase & google analytics is important
• Need to have knowledge of querying MySQL & NoSQL databases like MongoDB
• Experience with Node Js for our notification system

• Understanding of cloud services like Google cloud & AWS ec2 instance is a bonus for the profile