9+ Years

Global Engineering Expertise

AI · ML · LLM · Senior Python Engineer

Robert
Gasparyan

Integrating LLM-powered search, RAG pipelines, and AI-driven features into high-traffic production systems — backed by scalable APIs, async pipelines, and distributed architectures for industry leaders like Bayut & Dubizzle and Sololearn.

Explore Work Get In Touch

10M+

Monthly API Calls

Companies

Countries

LLM / RAG LangChain OpenAI Python Django FastAPI AWS K8s

The Journey

Experience & Innovations

Bayut & Dubizzle

May 2022 – Present

Senior Back-End Developer · Dubai, UAE

Led integration of LLM-powered semantic search and RAG pipelines across regional property platforms, replacing legacy SQL full-text search and improving result relevance for millions of users. Built and maintained Django/FastAPI microservices handling 10M+ monthly API calls. Reduced p95 latency by ~45% through PostgreSQL query optimisation and Redis caching. Architected async notification pipelines with Celery + RabbitMQ processing 500K+ events/day.

LLM APIs

LangChain

RAG

Embeddings

OpenAI

Python

Django/DRF

FastAPI

Elasticsearch

PostgreSQL

Redis

Celery

Kafka

RabbitMQ

Docker

K8s

AWS

Sololearn

Sep 2021 – May 2022

Senior Android Developer · Yerevan

Developed and shipped new learning module features in Kotlin for a platform with 20M+ registered users, improving lesson completion flow and reducing drop-off friction. Improved app startup time by optimising dependency injection and lazy loading patterns across core modules. Collaborated with backend teams on REST API contracts, reducing client-side data parsing errors by refining response schemas and error handling.

Kotlin

Jetpack Compose

Dagger/Hilt

Coroutines

REST APIs

MVVM

Horizon Oasis FZ

Apr 2021 – Jan 2022

Senior Python Developer · Dubai, UAE

Built and maintained REST APIs for a blockchain ecosystem platform including proof-of-stake apps, crypto wallet services, and validator node management. Developed trading bot backends with real-time market data ingestion and algorithmic execution logic, handling high-frequency decision loops with low-latency response times. Integrated smart contract interactions via Web3 libraries and implemented secure key management and transaction signing flows.

Python

Django

Web3

Smart Contracts

PostgreSQL

Redis

Docker

Trebel Music

Apr 2020 – Sep 2021

Senior Android Developer · Los Angeles, CA

Maintained and extended offline music download functionality for 5M+ active users across low-bandwidth markets, optimising background sync with WorkManager. Reduced crash rate through profiling and refactoring heavy operations off the main thread using Kotlin Coroutines. Led migration of core playback module to ExoPlayer, improving codec support and background playback stability.

Kotlin

ExoPlayer

Coroutines

WorkManager

MVVM

Room DB

Retrofit

Menu Group UK

Jul 2019 – Apr 2020

Team Lead Android · Yerevan

Led a team of 6 Android developers building and maintaining a food delivery app serving 500+ restaurants in Yerevan. Introduced code review standards and a PR workflow that reduced production bug rate by ~50% over two quarters. Architected real-time order tracking using WebSockets, cutting customer support contacts by 20%. Built courier application for real-time tracking and delivery.

Kotlin

Java

WebSockets

Google Maps

Firebase

CI/CD

TechBuddy

Aug 2018 – Sep 2019

Senior Android Developer · Stockholm

Built on-demand tech support booking flows for Europe's leading tech support platform, integrating real-time availability and geolocation matching. Refactored legacy codebase from Java to Kotlin, reducing crash rate and improving developer velocity across the team. Implemented push notification system for job alerts, achieving 80% open rate through optimised payload and deep-linking.

Kotlin

Java

FCM

Geolocation

Deep Linking

RxJava

Retrofit

Zangi

Jun 2017 – Sep 2018

Android Developer · Santa Clara, CA

Developed low-latency audio/video calling features for a secure messenger operating under extreme bandwidth constraints (~10KB/s). Integrated end-to-end encrypted messaging with custom protocol handling on Android, ensuring message delivery reliability in poor network conditions. Optimised battery and data consumption for background connectivity, a key differentiator in markets with limited data plans.

Java

C++/NDK

WebRTC

E2E Encryption

VoIP

Custom Protocols

Basic IT Center

Mar 2016 – Dec 2017

Deputy Director & Java/Android Trainer · Yerevan

Managed operations as Deputy Director at an education company committed to building the best learning experience for aspiring developers. Designed and delivered Java and Android training curriculum, mentoring students from fundamentals through to building production-ready applications.

Java

Android SDK

OOP

Curriculum Design

Mentoring

Ecosystem

Technology Stack

psychology

AI / ML / LLM

LLM APIs RAG Pipelines LangChain LlamaIndex OpenAI API Claude API Embeddings Semantic Search Pinecone pgvector Prompt Engineering PyTorch Hugging Face Fine-tuning Vector DBs

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