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Backend Engineer (MongoDB / API Integrations / AWS / Vectorization)

Position Summary

We are hiring a Backend Engineer with expertise in MongoDB, data vectorization, and advanced AI/LLM integrations. The ideal candidate will have hands-on experience developing backend systems that power intelligent data-driven applications, including robust API integrations with major social media platforms (Meta, Instagram, Facebook, with expansion to TikTok, Snapchat, etc.). In addition, this role requires deep AWS experience (Lambda, S3, EventBridge) to manage serverless workflows, automate cron jobs, and execute both scheduled and manual data pulls. You will collaborate closely with frontend developers and AI engineers to deliver scalable, resilient APIs that power our platform.

Key Responsibilities

• Design, implement, and maintain backend services with MongoDB and scalable data models.
• Build pipelines to vectorize data for retrieval-augmented generation (RAG) and other AI-driven features.
• Develop robust API integrations with major social platforms (Meta, Instagram Graph API, Facebook API; expand to TikTok, Snapchat, etc.).
• Implement and maintain AWS Lambda serverless functions for scalable backend processes.
• Use AWS EventBridge to schedule cron jobs and manage event-driven workflows.
• Leverage AWS S3 for structured and unstructured data storage, retrieval, and processing.
• Build workflows for manual and automated data pulls from external APIs.
• Optimize backend systems for performance, scalability, and reliability at high data volumes.
• Collaborate with frontend engineers to ensure smooth integration into Next.js applications.
• Ensure security, compliance, and best practices in API authentication (OAuth, tokens, etc.).
• Contribute to architecture planning, documentation, and system design reviews.

Required Skills/Qualifications

• Strong expertise with MongoDB (including Atlas) and schema design.
• Experience with data vectorization and embeddings (OpenAI, Pinecone, MongoDB Atlas Vector Search, etc.).
• Proven track record of social media API integrations (Meta, Instagram, Facebook; additional platforms a plus).
• Proficiency in Node.js, Python, or other backend languages for API development.
• Deep understanding of AWS services:
• Lambda for serverless functions.
• S3 for structured/unstructured data storage.
• EventBridge for cron jobs, scheduled tasks, and event-driven workflows.
• Strong understanding of REST and GraphQL API design.
• Experience with data optimization, caching, and large-scale API performance.

Preferred Skills/Experience

• Experience with real-time data pipelines (Kafka, Kinesis, or similar).
• Familiarity with CI/CD pipelines and automated deployments on AWS.
• Knowledge of serverless architecture best practices.
• Background in SaaS platform development or data analytics systems.

The Role:

As an ML Engineer at TIFIN, you will be responsible for driving research and innovation in a result-oriented direction. Your role will involve staying updated on the latest research trends and exploring advancements in Natural Language Understanding (NLU) and their applications in conversational AI. You will also play a mentoring role and contribute to improving NLU capabilities using transfer learning from historical conversational data.

Requirements:

• Experience with training and fine-tuning machine learning models on large text datasets.
• Strong computer science fundamentals and at least 3 years of software development experience.
• Track record of thinking big and finding simple solutions while dealing with ambiguity.
• Proven experience as a Natural Language Processing Engineer or in similar roles.
• Good understanding of NLP tricks and techniques for semantic extraction, data structure, and modeling.
• Familiarity with text representation techniques, algorithms, and statistics.
• Knowledge of programming languages such as R, Python, and Java.
• Proficiency in Machine Learning frameworks like TensorFlow, PyTorch, etc.
• Ability to design software architectures and solve complex problems.
• Strong analytical and problem-solving skills.
• Experience in projects related to information retrieval, machine comprehension, entity recognition, text classification, semantic frame parsing, or machine translation is a plus.
• Publications, patents, or conference talks in relevant fields are a bonus.

We are seeking a creative and dynamic Content Writer with expertise in social media content creation and script writing for reels. As a key member of our marketing team, you will be responsible for developing engaging and shareable content across various social media platforms, with a focus on short-form video content like reels. Your ability to craft compelling narratives and communicate effectively through written and visual mediums will be crucial in driving brand awareness and engagement. 

Responsibilities: 

• Write high-quality, original content for blogs, social media platforms, and other digital channels. 

• Excellent written and verbal communication skills, with a strong command of the English language. 
• 
  
• Create scripts for short-form video content, specifically tailored for platforms like Instagram, Facebook, LinkedIn, Youtube 
• 
  
• Collaborate with the creative team, video producers, and designers to ensure seamless integration of scripts into visually appealing content. 
• 
  
• Stay updated on social media trends, algorithm changes, and emerging content formats to optimize strategy.

⚒️ About The Role

We're looking for an experienced Frontend Engineer to breathe life into the user interface of our product. Understanding that meticulous engineering not only drives the user experience but also influences our product development process, we aim to prioritize this role from Day 1

🚀 This Role

As a Founding Frontend Engineer at Upskillr.ai, your contributions will be vital in refining the user experience of our AGI Platform. You will also participate in evaluating user interfaces and crafting the frontend landscape for future products. Further:

• Creating and optimizing our frontend infrastructure, rendering captivating user experiences through your engineering prowess.
• Utilizing your specialized skills to navigate frontend development, from designing responsive layouts to implementing interactive features.
• Collaborating closely with founders on product development and with designers for harmonious UI/UX integration.

What you'll work on:

• Leading feature development from user research to production in collaboration with designers and AI engineers.
• Building responsive UI components using React principles and JavaScript.
• Establishing a flexible frontend architecture with supportive APIs.
• Demonstrating expertise in front-end performance optimization and contemporary standards.
• Pioneering the engineering and integration of optimal human ↔ AI interfaces for enterprise operations. We're trailblazing in a fresh domain of engineering that previously didn't exist. The onus is on us to explore and incorporate a novel interface that resonates with our users.

Technical Skills:

• Profound expertise in JavaScript and React, along with robust front-end coding abilities and an understanding of progressive web applications.
• Must possess skills in HTML5, CSS3, JavaScript, React.js, Webpack, Enzyme, Redux, Flux, GIT, HTTP(s), Terminal, Build Tools, State Management, Type Checkers, Form Helpers, Routing, REST API, GraphQL, Utility Libraries, Internationalization, Server-Side Rendering, and Backend Framework Integration.
• Proficiency in browser-based debugging and performance testing.
• Experience in performance tuning, usability enhancement, automation, and continuous integration leveraging test-driven development methodologies (BDD/TDD).

🕵️ What We Look For

• Self-starters prepared to lead significant initiatives.
• Avid curiosity and passion for technology.
• Familiarity with UI/UX principles from an engineering perspective.
• Excellent communication abilities

😁 Perks & Benefits

🤝 Top-of-the-market compensation — At Upskillr.ai, we will offer top-of-the-market (90th+ percentile) compensation in both cash and equity. We believe that the best candidates deserve the best compensation, and we will ensure that it happens.

💯 High impact — You’ll be joining as a founding member of the team, and as such you will have a high level of ownership and influence over the direction of the company.

🧠 The gains — Collaborate closely with the founders. Experience the excitement of a rapidly expanding startup.

About Us

We build LLM Based Tools and Services for Enterprises.

Upskillr.ai, started by Aditya Saxena and Vikram Pandya, is a dynamic knowledge platform that combines the best of education and knowledge management powered by AGI.

What We Do

We are committed to delivering innovative and comprehensive solutions that address the diverse learning needs of individuals and organizations. The company is dedicated to leveraging Artificial General Intelligence (AGI), to provide personalized and tailored support, ensuring the success and satisfaction of its users.

Square Panda is a startup headquartered in Sunnyvale, CA with additional offices located in India 

and China. We are in a research based Ed-Tech space, focusing on children's early literacy. We 

have 3000+ schools under our belt and are proud to cater the needs of English Language 

development of 70,000+ kids worldwide. Our multisensory neuroscience research-based phonics 

learning system comes equipped with educational games to teach children many essential skills. 

With a curriculum that has been specially adapted for Indian schools and children, we strive to 

empower beginner learners through phonics awareness.

Responsibilities

• Develop and maintain art production workflow/pipeline by writing scripts/tools to aid artists to create more efficiently
• Become embedded with external customer teams to develop games, tools and provide support
• Integrate assets into client’s applications without sacrificing artistic vision or exceeding technical limits of the platform
• Produce particles, shaders and other VFX for Unity applications(Unity 2019.4 LTS)
• Build close relationships with client engineers and with Unity's internal development teams
• Efficiently solve problems, communicate, and educate our clients, both remotely and on-site at their offices
• Proactively train yourself to remain at the forefront of Unity Engine technology

Requirements

• Excellent skills in:
  
  
  • Understanding of the technical art asset delivery for an entire game for real-time use.
  • Writing shaders for real-time rendering.
  • Unity Visual Effect Graph
  • Using Photoshop, Illustrator for Texture & sheet creation.
  • Shader Graph for unity 2019.4.2
  • Communication, in both spoken and written English
  • Self-organization and working independently
  • Collaboration and working in teams
• Enthusiasm for working with video games projects.
• Minimum experience 2+ years.
• Location - Mumbai

Bonus points

• A portfolio demonstrating your ability to make beautiful things in real-time
• Experience on 2D games
• Scripting skills in C#
• Comprehensive knowledge of rendering fundamentals: modeling, texturing/shading/surfacing, rigging, animation, lighting, rendering
• Profiling and performance optimization of applications
• Experience using the Unity engine professionally
• Experience with technical writing, training or giving talks