Arkadiy Tetelman - Principal Security Architect at Chime

Arkadiy Tetelman

Principal Security Architect at Chime

San Francisco, California, United States

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Summary

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Rockstar

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Top School

Arkadiy Tetelman is a Principal Security Architect based in San Francisco with 13 years of experience building and operationalizing application and infrastructure security at scale. He led and grew Chime’s App & Infra Security teams, embedding preventative controls across AWS, Kubernetes and CI/CD while partnering closely with engineering via security champions and secure-by-default Terraform modules. Arkadiy combines deep hands-on technical skills—authoring CI/CD, CLI tooling and SSRF-resistant data collection for open-source bounty-targets—with a pragmatic, collaborative approach to risk reduction and developer enablement. His background spans senior security roles at Lob, Airbnb and Twitter and early-career backend engineering, giving him a rare blend of offensive, defensive and platform engineering perspective. He’s known for turning systemic vulnerability classes into automated mitigations and for treating security as a product that must be usable, scalable and empathetic to engineering teams.

13 years of coding experience

11 years of employment as a software developer

BS Computer Science Applied Mathematics, BS Computer Science Applied Mathematics at University of California, Berkeley

Stackoverflow

Stats

1reputation

297reached

0answers

1question

Github Skills (8)

devops10

ruby10

cli9

graphql8

git8

wpgraphql8

wordpress-graphql8

android6

Programming languages (15)

JavaCSSCGoHTMLKotlinTypeScriptHCL

Github contributions (5)

arkadiyt/bounty-targets

Dec 2017 - Dec 2022

This project crawls bug bounty platform scopes (like Hackerone/Bugcrowd/Intigriti/etc) hourly and dumps them into the bounty-targets-data repo

Role in this project:

Back-end & DevOps Engineer

Contributions:8 reviews, 91 commits, 250 PRs in 5 years 1 month

Contributions summary:Arkadiy primarily worked on the back-end infrastructure and the deployment pipeline for the `bounty-targets` project. They implemented a command-line interface (CLI) for the project, which involves cloning and interacting with a separate data repository. The user also set up the CI/CD pipeline by creating the installation instructions. Furthermore, the user made multiple updates to the Bugcrowd, YesWeHack and Hackerone data gathering process, which involved integrating the use of SSRF filter.

yeswehackhackenproofvrpintigritihourly

arkadiyt/multiple-aws-sessions

Dec 2024 - Mar 2025

Lets you access multiple AWS accounts from a single browser window

Contributions:34 PRs, 135 pushes, 32 branches in 3 months

amazonaws

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