Vassily Vorobyov

Lead Software Engineer

ISC Intelcall LLC

May 2024 - Present

Key Achievements:

• Designed and built backend microservices for the Izde.Online rental platform, defining service boundaries, API contracts, and data models that doubled feature delivery velocity within 6 months.
• Implemented ClickHouse as an OLAP analytics layer for platform transaction data, enabling fast aggregation queries and real-time reporting dashboards.
• Built infrastructure-as-code with Terraform and implemented CI/CD pipelines with GitHub Actions, including automated testing and a DevSecOps layer, cutting deployment failures and improving code quality.
• Architected and executed migration from native mobile/web stacks to Flutter, consolidating the frontend codebase and reducing development complexity.
• Built shared Python libraries for common service logic, eliminating code duplication across microservices and accelerating feature development.
• Shipped an LLM-powered feature — the first of its kind in the local market — which contributed to securing a follow-on investment round.

Project:

• Izde.Online - Platform for realtime renting deals

Data Software Engineer

EPAM

April 2024 - September 2025

Key Achievements:

• Developed and maintained large-scale ETL and ML pipelines for a enterprise client, processing high-volume data streams using Apache Spark, Kafka, and Databricks.
• Built and deployed data processing workflows on AWS infrastructure, using services like Glue, EMR, and MWAA, managed via Terraform.
• Created and exposed data models through APIs using FastAPI for consumption by downstream analytics teams and applications.
• Build RAG responses evaluation framework.
• Participated in designing security layer for RAG system.
• Built chatbot with LangGraph and LangCain.

Blockchain Solutions Architect

4irelabs

December 2021 - October 2022

Designed blockchain system architectures for NFT marketplace and parametric insurance platform at an outsourcing software development company.

Lead Software Engineer

WTS

May 2019 - November 2021

Key Achievements:

• Built end-to-end a corporate social network platform from concept to 10,000 active users, covering backend services, API design, and deployment infrastructure.
• Architected the backend using Django and Celery, running on a containerized environment with Docker and Kubernetes to ensure high availability.
• Implemented CI/CD pipelines using Terraform, automating testing and deployment processes which allowed the team to ship features weekly.
• Conducted systematic code reviews and established backend development practices, improving codebase quality across the team.

Lead Software Engineer

Power Group

May 2017 - April 2019

A well-known outsourcing software development company.

Key Achievements:

• Delivered backend services and promo websites for major enterprise clients including regional offices for Toyota and Mini.
• Developed a BTC/USD trading signal generator, building ML models to analyze market data from multiple exchanges.

Software Engineer

Namba

November 2016 - April 2017

An outsourcing software development company where I mainly worked on an ecommerce platform.

Key Achievements:

• Built an internal project tracking tool that was adopted across all teams, reducing project delays by an estimated 25% by improving visibility.
• Developed APIs for a large-scale e-commerce platform and contributed to the containerization of a service-oriented project using Docker.

Software Engineer

PurePro Kyrgyzstan

October 2014 - August 2016

An internal dashboard for members of an MLM company that made it easy to see their referral structure and income information.