
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.

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About Wissen Technology:
• The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015.
• Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains. We help clients build world class products.
• Our workforce consists of 550+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.
• Wissen Technology has grown its revenues by 400% in these five years without any external funding or investments.
• Globally present with offices US, India, UK, Australia, Mexico, and Canada.
• We offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
• Wissen Technology has been certified as a Great Place to Work®.
• Wissen Technology has been voted as the Top 20 AI/ML vendor by CIO Insider in 2020.
• Over the years, Wissen Group has successfully delivered $650 million worth of projects for more than 20 of the Fortune 500 companies.
We have served client across sectors like Banking, Telecom, Healthcare, Manufacturing, and Energy. They include likes of Morgan Stanley, MSCI, StateStreet, Flipkart, Swiggy, Trafigura, GE to name a few.
Website : www.wissen.com
Job Title: Senior Python Developer – Product Engineering
Location: Pune, India
Experience Required: 3 to 7 Years
Employment Type: Full-time
Employment Agreement: Minimum 3 years (At the completion of 3 years, One Time Commitment Bonus will be applicable based on performance)
🏢 About Our Client
Our client is a leading enterprise cybersecurity company offering an integrated platform for Digital Rights Management (DRM), Enterprise File Sync and Share (EFSS), and Content-Aware Data Protection (CDP). With patented technologies for secure file sharing, endpoint encryption, and real-time policy enforcement, helps organizations maintain control over sensitive data — even after it leaves the enterprise perimeter.
🎯 Role Overview
We are looking for a skilled Python Developer with a strong product mindset and experience building scalable, secure, and performance-critical systems. You will join our core engineering team to enhance backend services powering DRM enforcement, file tracking, audit logging, and file sync engines.
This is a hands-on role for someone who thrives in a product-first, security-driven environment and wants to build technologies that handle terabytes of enterprise data across thousands of endpoints.
🛠️ Key Responsibilities
● Develop and enhance server-side services for DRM policy enforcement, file synchronization, data leak protection, and endpoint telemetry.
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● Knowledge of file diffing algorithms (rsync, delta encoding) or document watermarking.
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🌟 What We Offer
● Work on a patented and mission-critical enterprise cybersecurity platform
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Basic understanding of compilation, runtime, networking and sockets etc.
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- experience in data/BI architect role
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Must be able to show us projects and or websites that you have created. Bonus points if you’ve created these projects/websites outside of your work (we love seeing proof of how much you love technology and coding).
Education - relevant degree in Engineering preferable








