Kyle Bryant
Builder · Crypto × AI

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

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
434 total
0765Apr 24May 9May 23

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

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 →111 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 →107 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 →48 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

1st place — on-chain Cards Against Humanity built on token-curated registries and bonding curves.

1st PlaceView details
03 /section

Work History

Where I've spent my full-time hours.

  1. Senior Blockchain Data Engineer (Contract) @ Fidelity Investments

    Dec 2024 — Present · Boston, MA

    A director-level contract engagement architecting the on-chain data platform behind a staked ETF — indexing Ethereum and Solana staking, consensus, and execution data for Fidelity's research and analyst teams.

    • Architect and operate the on-chain data platform that indexes Ethereum and Solana staking rewards, consensus, and execution data, powering the research and analyst teams behind a staked ETF.
    • Built the production pipelines behind it — Snowflake, Kafka, EKS, Node.js, Oracle, PostgreSQL — at institutional scale.
    EthereumSolanaSnowflakeKafkaEKSNode.js
  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.

    • Shipped novel signature-based order types — stop-loss, limit, and DCA for both ERC-20 tokens and NFTs — where users sign an intent (no transaction) and an executor settles it on-chain.
    • Pioneered this off-chain-signing / on-chain-settlement model across Ethereum and multiple Layer 2s — an early take on the intents paradigm now mainstream in DeFi.
    • Designed, deployed, and maintained the production mainnet smart contracts, executor infrastructure, and customer-facing SDKs end to end.
    SolidityHardhatTypeScriptReactAWSDigitalOceanPostgreSQL
  3. Lead Integrations Engineer @ Reggora

    Nov 2019 — May 2021 · Boston, MA

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

    • Spearheaded Encompass and Byte integrations into the Reggora platform.
    • Designed and shipped an event-sourcing architecture — consumer nodes, SQS, SNS, event forks, DynamoDB — that scaled the platform horizontally to support 250+ mortgage lenders and made it recoverable from a catastrophic database failure the prior architecture couldn't have survived.
    • Delivered features end to end across the stack with React, Flask, and MongoDB.
    ReactFlaskMongoDBDynamoDBSQSSNS
  4. Lead Smart Contract Engineer @ 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.
    • Deployed smart contracts to testnet and built the full feature flow end-to-end — from SDK to frontend.
    EthereumSolidityReactIPFSAWSEIP-1077EIP-1078
  5. Senior Software Engineer @ Hitachi Vantara

    Jan 2017 — Aug 2018 · Waltham, MA

    Modernized internal build tooling and shaped the high-level design of Hitachi Vantara's Pentaho 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
04 /section

Education

Where the foundations got built.

Worcester Polytechnic Institute

2011 — 2015

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

Notable projects

The Urban WhaleSenior MQP · Best Video Game Project

An Unreal Engine 4 game teaching players about the critically endangered North Atlantic right whale and the efforts to prevent its extinction. I built the fish-schooling AI steering behaviors in C++, plus the player-diver movement and environment interactions.

Unreal Engine 4C++C#MayaZBrush3ds Max
Transformative Spells (Skyrim Mod)2,000+ subscribers · 5,000+ downloads

A free modification for The Elder Scrolls V: Skyrim that lets players purchase in-game shapeshifting spells. Built in the Creation Kit with Papyrus scripting and published on Nexus Mods.

Creation KitPapyrusNexus Mods
05 /section

Stack

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

01

Languages

  • TypeScript
  • JavaScript
  • Solidity
  • Python
  • Java
  • C++
  • C#
  • SQL
02

Blockchain

  • Ethereum
  • Layer 2s
  • Solana
  • Smart Contracts
  • Account Abstraction
  • Intent-Based Apps
  • EIP-1077
  • EIP-1078
  • EIP-712
  • Universal Login
  • Meta Transactions
  • CREATE2
  • DeFi
  • IPFS
  • Validator Operations
  • MEV-Boost
  • Beacon Chain
03

Backend

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

Frontend

  • React
  • Next.js
  • Tailwind CSS
  • ethers.js
05

Data

  • On-chain Analytics
  • Data Engineering
  • ETL
  • PostgreSQL
  • Drizzle ORM
  • Redshift
  • Snowflake
  • S3
  • MongoDB
  • DynamoDB
06

Infra

  • AWS
  • EKS
  • Docker
  • GitHub Actions
  • Jenkins
  • Autosys
  • Kafka
  • SQS
  • SNS
07

AI / Tooling

  • Claude Code
  • GitHub Copilot
  • Anthropic SDK
  • OpenRouter
  • Agent Orchestration
  • LLM Integration
  • Hardhat
  • Vitest
TypeScript JavaScript Solidity Python Java C++ C# SQL Ethereum Layer 2s Solana Smart Contracts Account Abstraction Intent-Based Apps EIP-1077 EIP-1078 EIP-712 Universal Login Meta Transactions CREATE2 DeFi IPFS Validator Operations MEV-Boost Beacon Chain Node.js Flask GraphQL Event Sourcing SDK Design Stripe React Next.js Tailwind CSS ethers.js On-chain Analytics Data Engineering ETL PostgreSQL Drizzle ORM Redshift Snowflake S3 MongoDB DynamoDB AWS EKS Docker GitHub Actions Jenkins Autosys Kafka SQS SNS Claude Code GitHub Copilot Anthropic SDK OpenRouter Agent Orchestration LLM Integration Hardhat Vitest TypeScript JavaScript Solidity Python Java C++ C# SQL Ethereum Layer 2s Solana Smart Contracts Account Abstraction Intent-Based Apps EIP-1077 EIP-1078 EIP-712 Universal Login Meta Transactions CREATE2 DeFi IPFS Validator Operations MEV-Boost Beacon Chain Node.js Flask GraphQL Event Sourcing SDK Design Stripe React Next.js Tailwind CSS ethers.js On-chain Analytics Data Engineering ETL PostgreSQL Drizzle ORM Redshift Snowflake S3 MongoDB DynamoDB AWS EKS Docker GitHub Actions Jenkins Autosys Kafka SQS SNS Claude Code GitHub Copilot Anthropic SDK OpenRouter Agent Orchestration LLM Integration Hardhat Vitest
06 /section

Get in touch

Mostly I build — shipping production software fast with AI-accelerated development. If you're working on something real, on-chain or otherwise, let's talk.

Send a message
Best

Honestly your best shot at a reply — a message from here tells me you've actually been through my work, so these jump straight to the front of my inbox.

LinkedIn
in/kyle-c-bryant

Or reach me directly on LinkedIn.