Kyle Bryant
Builder · Crypto × AI

Senior Blockchain Data Engineer at Fidelity. I work where institutional finance meets Ethereum — building data infrastructure for on-chain analytics by day, accelerating personal projects with AI-assisted development and maintaining a home Ethereum validator by night.

What I'm building→$get in touch▌
Based
Greater Boston
Currently
Fidelity Investments
Github
@Kyrrui
LinkedIn
@kyle-c-bryant
01 /section

Currently Building

My most active repos over the last 30 days — public and private, pulled live from GitHub at build time.

refreshed just now
Commits per day · last 30 days
799 total
010115Apr 16May 1May 15

KinQuilt.com

Live ↗

Solo Engineer · 2026–Present

Genealogy research workspace — a Vite + React + TypeScript SPA paired with a Chrome MV3 extension that aggregates a person's records across FamilySearch, WikiTree, FindAGrave, Ancestry, and Chronicling America into a single triage view, then drafts a cited biography with an LLM.

React 19TypeScriptViteTailwindZustandChrome MV3OpenRouterNetlify
deep dive →501 commits / mo

QuinfallCrafting.com

Live ↗

Creator & Maintainer · 2026–Present

Live, revenue-generating companion tool for The Quinfall MMO. Sole engineer, designer, and operator. ~2,600 MAU across 70+ countries, fully localized into 13 languages.

Next.js 15React 19TypeScriptPostgreSQLDrizzle ORMZustandStripeDiscord OAuth2ResendNetlify Edge
deep dive →166 commits / mo

Testamentum Discord Bot

GitHub ↗

Creator & Maintainer · 2024–Present

Serves a Discord church community of over 100 members with the 4,300-verse Marcionite Testamentum. 20+ slash commands, daily AI-generated content, and an interactive multiplayer scripture quiz.

Pythondiscord.pyPillow (PIL)OpenRouter APIBeautifulSoupGitHub ActionsRailway
deep dive →92 commits / mo

KyleBryant.dev

Live ↗

Creator · 2026–Present

This site. Built collaboratively with Claude Code as a pair-programming partner — every section reads from a single data file. Next.js 16 static export, deployed continuously to Netlify.

Next.js 16React 19TypeScriptTailwind v4MotionNetlifySharpClaude Code
deep dive →39 commits / mo
02 /section

Hackathons

A few weekends I'm proud of. Real teams, tight deadlines, deployed contracts.

3 events
Sep 2018Winner
ETHBerlin · Berlin, DE
Boomerang — EIP-1077 UX
↳Winner · Best UX
—Winner
ETHBuenosAires · Buenos Aires, AR
Hackathon Winner
↳Winner
—Finalist
ETHDenver · Denver, CO
Spirit of Build
↳Spirit of Build Award
03 /section

Work History

Where I've spent my full-time hours.

  1. Senior Blockchain Data Engineer @ Fidelity Investments

    Dec 2024 — Present · Boston, MA

    Building data infrastructure at the intersection of traditional finance and decentralized systems — bridging institutional rigor with on-chain analytics and Ethereum data.

    • On-chain data platform work supporting institutional analytics on Ethereum.
    • Bridging the gap between institutional infrastructure and decentralized data sources.
    EthereumData EngineeringAWS

  2. Lead Backend Engineer @ Brink

    May 2021 — Dec 2024 · Remote

    Backend, SDK, and execution infrastructure for multiple decentralized web apps pioneering intent-based interactions on Ethereum and L2s.

    • Pioneered intent-based applications enabling trustless DCA, stop-loss, and limit orders.
    • Designed signature-based execution flows across Ethereum and various Layer 2s.
    • Shipped both customer-facing SDKs and the executor infrastructure that fulfilled the intents.
    TypeScriptSolidityEthereumL2sNode.js

  3. Lead Software Engineer @ Reggora

    Oct 2019 — May 2021 · Greater Boston

    Promoted from Senior to Lead. Ran the technical integrations team (5 engineers) handling third-party business APIs and the event-driven backbone of the product.

    • Led architecture and quality for a team of 5 on partner API integrations.
    • Designed and shipped an event-sourcing rewrite — consumer nodes, SQS, SNS, event forks, DynamoDB — enabling horizontal scaling and recovery from a critical DB failure.
    • Shipped features end-to-end across React, Flask, and MongoDB.
    PythonFlaskReactAWSDynamoDBMongoDB

  4. Senior Smart Contract Engineer @ Skedaddle

    Aug 2018 — Oct 2019 · Boston, MA

    Lead Blockchain Architect on Boomerang. Built the platform around the Universal Login Standard (EIP-1077 / EIP-1078) — a then-novel Web3 UX paradigm.

    • Caught a front-running vuln in the original contracts and rewrote them from scratch — cheaper, more versatile, more secure.
    • Open-source contributions to UniversalLoginSDK to support Boomerang's requirements.
    • Designed and built the BoomerangSDK node library for third-party integrators.
    • Represented the project at ETHBerlin (Best UX winner), the Status Cryptolife Hackathon, and Devcon 4.
    SolidityEIP-1077EIP-1078Node.js

  5. Software Engineer @ Hitachi Vantara

    Jan 2017 — Aug 2018 · Waltham, MA

    Migrated and maintained internal projects; contributed to the design of worker nodes for Hitachi's ETL tool.

    • Updated internal projects from Ant to Maven.
    • Worked on high-level design of horizontally-scaling ETL worker nodes.
    • Contributed to an internal application platform.
    JavaMavenETL

  6. Software Development Engineer @ Amazon Robotics

    May 2015 — Jan 2017 · Westborough, MA

    Internal tooling for the Enterprise Data Warehousing team — comparative metrics, extraction/aggregation, and cross-shard SQL execution.

    • Built data-accuracy tooling that surfaced discrepancies across the EDW.
    • Designed a web UI + backend for executing SQL across all database shards with failure reporting.
    • Heavy AWS day-to-day.
    JavaAWSSQL
04 /section

Education

Where the foundations got built.

Worcester Polytechnic Institute

2011 — 2015

B.S. Interactive Media and Game Development · Minor in Computer Science

  • Best 3D Video Game
  • Honorable Mention — Best Major Qualifying Project (Video Game)
05 /section

Stack

What I reach for. Roughly grouped — strong opinions, loosely held.

01

Languages

  • TypeScript
  • Solidity
  • Python
  • Java
02

Blockchain

  • Ethereum
  • Layer 2s
  • EIP-1077
  • EIP-1078
  • EIP-712
  • Account Abstraction
  • Validator Operations
03

Backend

  • Node.js
  • Flask
  • Event Sourcing
  • SDK Design
04

Frontend

  • React
  • Next.js
05

Data

  • On-chain Analytics
  • Data Engineering
  • ETL
  • MongoDB
  • DynamoDB
06

Infra

  • AWS
  • SQS
  • SNS
  • MEV-Boost
  • Beacon Chain
07

AI / Tooling

  • Claude Code
  • Anthropic SDK
  • AI-Assisted Dev
TypeScript ◆Solidity ◆Python ◆Java ◆Ethereum ◆Layer 2s ◆EIP-1077 ◆EIP-1078 ◆EIP-712 ◆Account Abstraction ◆Validator Operations ◆Node.js ◆Flask ◆Event Sourcing ◆SDK Design ◆React ◆Next.js ◆On-chain Analytics ◆Data Engineering ◆ETL ◆MongoDB ◆DynamoDB ◆AWS ◆SQS ◆SNS ◆MEV-Boost ◆Beacon Chain ◆Claude Code ◆Anthropic SDK ◆AI-Assisted Dev ◆TypeScript ◆Solidity ◆Python ◆Java ◆Ethereum ◆Layer 2s ◆EIP-1077 ◆EIP-1078 ◆EIP-712 ◆Account Abstraction ◆Validator Operations ◆Node.js ◆Flask ◆Event Sourcing ◆SDK Design ◆React ◆Next.js ◆On-chain Analytics ◆Data Engineering ◆ETL ◆MongoDB ◆DynamoDB ◆AWS ◆SQS ◆SNS ◆MEV-Boost ◆Beacon Chain ◆Claude Code ◆Anthropic SDK ◆AI-Assisted Dev ◆
06 /section

Let's build something

I'm especially interested in agentic infra, novel cryptographic UX, and anything where the on-chain and AI sides actually need each other.

Coming soon
Send a message

Drop a note and I'll reply by email. Hookup pending.

LinkedIn
↗
in/kyle-c-bryant

Quickest way to reach me until the form is live.