Kyle Bryant
Builder · Crypto × AI

Principal Blockchain Data Engineer at Fidelity. I work where institutional finance meets Ethereum — building data infrastructure for on-chain analytics by day, building personal projects with AI-accelerated 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 — pulled live from GitHub daily

refreshed just now
Commits per day · last 30 days
545 total
0990Apr 21May 6May 20

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 →244 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 →168 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 →76 commits / mo

Testamentum Discord Bot

GitHub ↗

Creator & Maintainer · 2026–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 →57 commits / mo
02 /section

Hackathons

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

4 events
Fidelity Hackathon
Boston, MA · July 2025
1st Place
Traderoute Multi-Dex

A 2-day, 3-person build benchmarking live on-chain ERC-20 router quotes against Fidelity's internal pricing.

↳1st PlaceView details→
ETHDenver
Denver, CO · February 2019
Winner
Universal Wallet

An Ethereum browser wallet with a cutting-edge UX — judged the most complete end-to-end product.

↳Spirit of Build AwardView details→
ETHBerlin
Berlin, DE · September 2018
Winner
AllAboard.xyz

Best-UX winner — an early take on Universal Login and meta-transactions.

↳Best UXView details→
ETHBuenosAires
Buenos Aires, AR · May 2018
1st Place
CryptoAgainstHumanity.io

Overall winner — on-chain Cards Against Humanity built on token-curated registries and bonding curves.

↳Overall WinnerView details→
03 /section

Work History

Where I've spent my full-time hours.

  1. Principal Blockchain Data Engineer @ Fidelity Investments

    Dec 2024 — Present · Boston, MA

    Building the on-chain data infrastructure that brings institutional rigor to Ethereum analytics — where traditional finance meets decentralized systems.

    • Build and operate on-chain data platforms powering institutional analytics on Ethereum.
    • Bridge institutional infrastructure with decentralized data sources at production scale.
    EthereumOn-chain AnalyticsData EngineeringAWS

  2. Lead Backend / Smart Contract Engineer @ Brink

    May 2021 — Dec 2024 · Boston, MA

    Owned backend, SDK, and execution infrastructure for multiple decentralized applications — pioneering intent-based interactions across Ethereum and its Layer 2s.

    • Deployed and maintained production smart contracts on Ethereum Mainnet securing $10k+ TVL.
    • Pioneered intent-based applications enabling complex signature-based interactions across Ethereum and multiple Layer 2s.
    • Built the customer-facing SDKs and the executor infrastructure that fulfilled user intents end to end.
    SolidityHardhatTypeScriptReactAWSDigitalOceanPostgreSQL

  3. Lead Software Developer @ Reggora

    Nov 2019 — May 2021 · Boston, MA

    Led a 5-engineer team and owned technical integrations across Reggora's platform.

    • Designed and shipped an event-sourcing architecture — consumer nodes, SQS, SNS, event forks, DynamoDB — that let Reggora scale horizontally and survive a mission-critical database failure.
    • Delivered features end to end across the stack with React, Flask, and MongoDB.
    ReactFlaskMongoDBDynamoDBSQSSNS

  4. Lead Blockchain Architect @ Skedaddle

    Aug 2018 — Sep 2019 · Boston, MA

    Architected Boomerang end to end on the Universal Login Standard (EIP-1077 / EIP-1078) — a then-novel approach to Web3 UX.

    • Made significant open-source contributions to the UniversalLoginSDK.
    • Represented the project at Devcon 4, the Status Cryptolife Hackathon, and ETHBerlin.
    EthereumSolidityReactIPFSAWSEIP-1077EIP-1078

  5. Software Engineer @ Hitachi Vantara

    Jan 2017 — Aug 2018 · Waltham, MA

    Modernized internal build tooling and shaped the high-level design of Hitachi Vantara's ETL platform.

    • Migrated internal projects from Ant to Maven.
    • Designed worker nodes that horizontally scale Hitachi Vantara's extract-transform-load engine.
    JavaMavenETL

  6. Software Development Engineer @ Amazon Robotics

    May 2015 — Jan 2017 · Westborough, MA

    Built large-scale cloud data solutions and cross-database validation tooling for the Enterprise Data Warehouse team.

    • Constructed scalable cloud data infrastructure on DynamoDB, Redshift, and S3.
    • Developed web tools that validated data integrity across multiple cloud databases.
    DynamoDBRedshiftS3AWS

  7. Student Game Developer @ New England Aquarium

    Jan 2015 — Apr 2015 · Boston, MA

    Prototyped a video game with a 5-person team to build empathy — and drive action — for the endangered North Atlantic right whale.

    • Designed core mechanics around empathy-driven conservation storytelling.
    Game DevelopmentPrototyping

  8. Software Engineering Intern @ Amazon Robotics

    May 2014 — Aug 2014 · North Reading, MA

    On a 6-intern team, built tooling and tests to debug the Drive Units' Obstacle Detection System.

    • Created a Java GUI for visually debugging Drive Unit logs.
    • Established testing and debugging methods adopted for future Obstacle Detection work.
    Java
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.