Summary
Overview
Work History
Education
Skills
Languages
Websites
Timeline
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Ivan Eroshenko

Boston,MA

Summary

Software engineer with experience as CTO of a YC-backed startup, tech lead building AI agents, and SDE at AWS and Amazon Retail. Strong at building 0→1 products, leading small teams, and shipping fast with lean systems.

Overview

3
3
years of professional experience

Work History

Software Development Engineer (Tech Lead)

Extraverse
11.2023 - 05.2024
  • Designed and built a web app and a mobile app to help users improve communication skills with the help of AI.
  • I’ve built a web app MVP that connects people in a video chat—kind of like monkey.app—in two weeks. Pivoted towards having people talk with AI via voice—think ChatGPT's real-time voice mode, before it existed.
  • ChatGPT's free real-time voice feature killed our app.
  • Web app backend: Supabase (Auth, Postgres database, edge functions).
  • Frontend: React (Typescript), Ionic Framework to build cross-platform apps
  • Low latency voice AI agents: Python, FastAPI, ChatGPT API, and Pipecat SDK.
  • I mentored a junior developer throughout the project.
  • Left to pursue graduate studies in the U.S.

Chief Technology Officer

Transformity (YCombinator S23)
San Francisco, CA
06.2023 - 08.2023
  • Co-founded a liquor store point-of-sale startup; secured funding and mentorship from Y Combinator (S23 batch).
  • Built an MVP web app and an AWS Lambda pipeline to digitize liquor distributor catalogs.
  • Led early technical direction, balancing speed of execution with maintainability.
  • Navigated the shift from big tech engineering to startup pragmatism, learning to prioritize simplicity over scalability.
  • Faced incorporation and funding delays due to citizenship status, contributing to my decision to transition out of the role.
  • Technologies used: Java (Spring Boot), AWS (Postgres managed database, Lambda), React (TypeScript), AWS Amplify, and Figma.

Software Development Engineer I

AWS Healthlake
Seattle, WA
05.2022 - 06.2023
  • Reduced latency for the AWS HealthLake FHIR Search API by 50% by identifying the bottleneck of a JDK API we used to do multi-threading, and replacing it with ExecutorService, with an appropriate number of allocated threads based on the system’s load.
  • Reduced financial costs for data processing infrastructure by 75%. Identified the root cause of having over-provisioned capacity in ETL pipelines. Designed and implemented a solution to convert single-tenant streaming AWS Glue jobs to batch jobs running on a schedule.
  • Implemented integration tests to validate the auth paths of datastore APIs. I became the team's knowledge expert on AWS IAM integration.
  • Technologies used: Glue (jobs, scheduled triggers, data catalog), Spark Streaming, AWS Athena, Kafka, DynamoDB, CloudWatch, CDK, and other AWS services.
  • Left to pursue a startup opportunity.

Software Development Engineer I

Amazon
Tempe, AZ
06.2021 - 05.2022
  • I deprecated an internal service, saving 10 hours per week for the on-call engineers. Created a detailed migration guide for customers. Hosted office hours to support customers' queries.
  • Implemented integration tests for one of the team's customer-facing applications.
  • Standardized URL structure of sell.amazon.com.
  • Enabled internal customers of Amazon’s internal content management system to publish HTML content in the CN (China) region.
  • Left to build a new AWS service.

Education

Master of Science - Computer Science

Worcester Polytechnic Institute (WPI)
Worcester, MA
05.2025

BS - Computer Science

Worcester Polytechnic Institute (WPI)
Worcester, MA
05.2021

Skills

  • Java
  • Python
  • Typescript
  • Java Spring Boot
  • AWS
  • React
  • ETL
  • Figma
  • RAG AI agents
  • Supabase
  • Postgres
  • NextJS
  • Node

Languages

English
Native/ Bilingual
Russian
Native/ Bilingual
German
Native/ Bilingual

Timeline

Software Development Engineer (Tech Lead)

Extraverse
11.2023 - 05.2024

Chief Technology Officer

Transformity (YCombinator S23)
06.2023 - 08.2023

Software Development Engineer I

AWS Healthlake
05.2022 - 06.2023

Software Development Engineer I

Amazon
06.2021 - 05.2022

Master of Science - Computer Science

Worcester Polytechnic Institute (WPI)

BS - Computer Science

Worcester Polytechnic Institute (WPI)

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Ivan Eroshenko