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.

What I'm building→$get in touch▌Download résumé↓

Based

Greater Boston

Currently

Fidelity Investments

Github

@Kyrrui

@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

307 total

hotel-requiem

private

updated 4w ago

1929 ghost-detective: possess the guests of a snowbound hotel, interrogate LLM-driven actors, and prove your own murder before dawn — motive, opportunity, and the lie. 2D prototype for a 3D/VR game running a local 8B actor.

23eb2bbEleven more review findings closed: stranded walkers, dispatch expiry…4w ago
cdf231bReview fixes: walkers keep their destinations to themselves; the kill…4w ago
2c9504eThe hotel becomes an ensemble: four-act night, rebuilt duets, and the…4w ago
1c128d5The actor finally knows who it is: substrate, Skeleton A, self-knowle…4w ago

TypeScript

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 →62 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 →55 commits / mo

options-not-debt

public

updated 3w ago

↗

ETH-backed RWA index trackers built on options instead of debt (ethresear.ch t/25036) - Vyper, Foundry, Halmos-verified

13b5435docs: unified-desk spec (deep liquidity + high leverage + guardian)3w ago
62e42cbdocs(P2): ownerless leverage-tier menu spec (design + red-team)3w ago
12f5f41docs(handoff): fix frontend IA — a short is leverage, not a separate …3w ago
6274dbcdeploy(P1): redeploy short stack against Circle's VERIFIED Sepolia US…3w ago

Vyper★ 1

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.

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
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
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
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
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
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 Whale↗Senior 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.

Languages

TypeScript
JavaScript
Solidity
Python
Java
C++
C#
SQL

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

Backend

Node.js
Flask
GraphQL
Event Sourcing
SDK Design
Stripe

Frontend

React
Next.js
Tailwind CSS
ethers.js

Data

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

Infra

AWS
EKS
Docker
GitHub Actions
Jenkins
Autosys
Kafka
SQS
SNS

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.

↗

in/kyle-c-bryant

Or reach me directly on LinkedIn.

Kyle BryantBuilder · Crypto × AI