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
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
218 total
0540Jun 11Jun 26Jul 10

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 →53 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

Gimbal

private

updated 3w ago

  • 69fc87dReplace the operator RFQ desks with the immutable Gimbal House3w ago
  • 3d0ed29RFQ frontend: fix stale tx banner + close the spec revert-taxonomy + …4w ago
  • de29256operatorDesks: list the live spUSD RFQ desk → surfaces it in the UI4w ago
  • 22f5945quoter: fix build output path so the container can start4w 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 →42 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 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.

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.