Timothy Krell / Player-Coach Director of EngineeringHammonton, New Jersey

I build softwarewhere a bug costs real money.

I’m a hands-on Director of Engineering, 75% in the code and 25% leading a 15-engineer organization. I shipped AI trading features to a few thousand beta users and led the builds of two decentralized exchanges that have handled $33B+ in trading volume. Systems I built secure $100M+ in user assets and a $50M+ treasury, and I cut $300K+ a year from our cloud bill.

Read the selected work Resume (PDF)

$33B+traded on the two decentralized exchanges I led

$100M+in user assets secured on platforms I built

$50M+in treasury and token vesting in my custody

$300K+cut from annual cloud spend

6 → 15engineers, scaling the organization I lead

Skills

Hands-on building

AI engineering

AI trading features on Claude Sonnet and Haiku via OpenRouter, where code computes every number the model shows. A code-graded eval suite (~100 cases, frozen market data, fault injection) gates CI releases; its results backed a model switch that cut AI cost per turn ~75%.

Languages

TypeScript, JavaScript, Go, Rust, Python, and Solidity. Standardizing on strict TypeScript cut incident reports and Sentry errors by 40%.

Frontend systems

A schema-driven component system that configures partner forms without new code, infinite-scroll views over hundreds of thousands of records at 60 FPS, and real-time collection chat.

API design

Go services for SuperVerse APIs and blockchain indexing, the player-account and inventory backend for the video game Masters of Mayhem, and a GraphQL layer over a legacy REST backend.

Native mobile

React Native apps for iOS and Android, including a technician field app. Lifted a field-worker app used by thousands from 2.5 to 4.5 stars.

Infrastructure

AWS, Cloudflare Workers and Durable Objects, Kubernetes, Docker, Terraform, and GitHub Actions, observed with Datadog, Grafana, and Sentry.

Smart contracts

Solidity with Foundry and Hardhat. Led the audited migration of eight figures in user assets to new contracts.

Leadership

Team leadership

Scaled a remote engineering organization from 6 to 15, with seven direct reports including team leads.

Mentoring

Grew engineers into senior roles through formal promotions; trained 15+ engineers in AI-assisted coding and code review.

Hiring

Ran hiring for ~7 engineers and contractors.

C-level reporting

Set roadmap, budget, and vendor strategy with C-level leadership.

Budgets & vendors

Cut $300K+ a year in AWS and Cloudflare spend; renegotiated vendor contracts and managed contractor budgets.

Process & delivery

Cut build-and-deploy time from 30 minutes to 3 and moved from biweekly releases to multiple production deploys a week.

High-trust operations

Ran treasury and employee token-vesting operations securing $50M+ through a Safe multisig, a wallet that needs several signers to move funds. Owned production access, key management, incident response, and security audits.

Experience

Jan 2024 - Present

Director of Engineering

Super Studios Inc.

Built and shipped AI trading features that let a few thousand beta users create and backtest strategies, and led the 0-to-1 builds of the Blackhole and Supernova decentralized exchanges ($33B+ in trading volume, $294M peak total value locked). Scaled engineering from 6 to 15 with seven direct reports, including team leads. Ran multisig treasury and token-vesting operations securing $50M+, cut $300K+ a year in cloud spend, and brought build-and-deploy time from 30 minutes to 3.

Jan 2022 - Jan 2024

Senior Full Stack Engineer and Engineering Manager

Super Studios Inc.

Managed four direct reports while shipping alongside them. Launched Web3 products serving hundreds of thousands of monthly active users, including staking apps and minting portals for the Impostors collections ($77M+ in lifetime trading volume). Led the GigaMart NFT marketplace from 0-to-1, and standardized on strict TypeScript, cutting incident reports and Sentry errors by 40%.

Apr 2020 - Jan 2022

Senior Full Stack Engineer and Engineering Manager

The Helper Bees

Managed three direct reports at a venture-backed insurtech that connects health plans, older adults, and in-home care providers, from its $6M Series A through its $12.8M Series B as the company tripled revenue. Lifted a mobile app used by thousands of field workers from 2.5 to 4.5 stars and led the migration of four-plus production codebases to TypeScript.

Jun 2018 - May 2019

Freelance Software Engineer

The Helper Bees

Modernized a legacy web app into a React single-page app, built iOS and Android apps with React Native, and trained the client's developers in JavaScript, React, and React Native.

Jun 2006 - May 2020

Senior Software Engineer and IT Manager

Bethany Associates

Grew from IT support to lead engineer and de facto head of technology for a ~30-person facilities-services company. Built its core operations platform from 0-to-1, from CRM and scheduling to invoicing and payments, serving tens of thousands of customers across three states.

Systems with consequence.

Some of the many projects I've built and architected

Creative AI / dialogue rewriting / 2026

Rescript Studio

Type a new line and the actor says it, in his own voice, with matching lips.

A dialogue rewrite takes minutes on local hardware. Footage never leaves the machine.

Decision noteThe editor extracts the selected region frame-accurately with FFmpeg and stages it into a ComfyUI workflow built on MiniMax H3 reference-to-video models.

My role: Solo: product, interface, and generation pipeline
Signal: A dialogue rewrite takes minutes on local hardware. Footage never leaves the machine.

A local-first editor that rewrites dialogue inside real footage. Mark a segment, type the new line, and the pipeline regenerates the shot with matched voice and lip motion, then stitches it back frame-accurately.

Open case study

Game platform / digital ownership / 2024-2026

Impostors Genesis

Everything a player owns, claimable and usable in one place.

Shipped the production frontend on TanStack Start and Cloudflare Workers.

Decision noteTask-first routes: inventory, eligibility, claims, bundling, and Origin assets each get a screen that does one job well.

My role: Technical direction, architecture, hands-on engineering
Signal: Shipped the production frontend on TanStack Start and Cloudflare Workers.

The player portal for Impostors, a game whose characters and items are NFTs (blockchain tokens a player owns). It covers wallet login, a full asset inventory, eligibility checks, claims, Origin bundling, codex lore, and a land generator that composes owned assets into deterministic renders.

Open case study

III

DeFi operations / decision systems / 2024-2026

Epoch Planner

The dashboard that replaced ten hours of weekly spreadsheet work.

Cut ~10 hours of manual work every week.

Decision noteWorkspaces model each organization with explicit roles and administrative boundaries.

My role: Architecture, product design partnership, engineering leadership
Signal: Cut ~10 hours of manual work every week.

An internal planning system for voting on decentralized exchanges (DEXs). Token holders vote each epoch (a fixed voting period) to steer rewards toward liquidity pools. The planner puts pools, votes, rewards, bribes, history, migrations, and administration for multiple workspaces on one synchronized screen.

Open case study

NFT marketplace / social trading / 2022-2023

GigaMart

Trade the collection and talk to its holders on the same page.

Went from public announcement to open beta in eight days, December 2022.

Decision noteSet technical direction, picked the frontend and backend stacks, and managed the external contractors building alongside the core team.

My role: Technical direction, stack selection, contractor management; built collection chat personally
Signal: Went from public announcement to open beta in eight days, December 2022.

A Super Studios NFT marketplace with aggregated listings, rankings, live analytics, collector profiles, notifications, and custom dashboards. I led it from 0-to-1 and built its real-time collection chat myself.

Open case study

Brand platform / social systems / 2022-2024

SuperVerse

An ecosystem's front door: brand site, content pipeline, social rewards.

The relaunch shipped with a production web presence built in-house.

Decision noteBuilt the brand site and its content-management pipeline, so marketing publishes without engineers in the loop.

My role: Architecture and hands-on engineering
Signal: The relaunch shipped with a production web presence built in-house.

The SuperVerse relaunch needed a public face. I built the brand site, the content pipeline behind it, and the social engagement tooling that rewarded the community for showing up.

Open case study

Community platform / contract work / 2021-Present

Neo Tokyo Tools

Identity, trading, games, and lore for a token-gated community.

Live through multiple product generations since 2021.

Decision noteBuilt citizen identity, profile, and discovery tools used across the community.

My role: Contract engineer and community contributor
Signal: Live through multiple product generations since 2021.

Platform work for the Neo Tokyo community since 2021: citizen discovery, marketplace surfaces, profiles, raffles, arcade games, and on-chain integrations.

Open case study

VII

Financial systems / asset migration / 2022-2026

Staking & Distribution

Systems that move eight figures of user assets and don't get to be wrong.

Protected eight figures in user assets by leading their audited migration to new smart contracts.

Decision noteStaking and migration portals backed by audited contracts and private server-side RPC infrastructure.

My role: Technical direction, migration oversight, systems engineering
Signal: Protected eight figures in user assets by leading their audited migration to new smart contracts.

The money-handling layer of the ecosystem: staking portals, Solidity contracts, historical chain reconstruction, migration tooling, snapshots, and resumable multisig distributions (payouts that need several signers to approve).

Open case study

VIII

AWS and Cloudflare cloud marks combining into a dollar coin labeled $300K+ a year

Cloud economics / engineering systems / 2024-2026

Platform Modernization

$300K+ a year off the AWS and Cloudflare bill.

Cut annual AWS and Cloudflare spend by more than $300,000.

Decision noteAudited everything: usage, contracts, cache hit rates, always-on servers, per-service pricing.

My role: Director of Engineering and lead architect
Signal: Cut annual AWS and Cloudflare spend by more than $300,000.

A portfolio-wide teardown of AWS and Cloudflare spend: caching, rightsizing, insourcing, deployment rebuilds, and monorepo boundaries across every product.

Open case study

I build and lead with the same goal: help others succeed.

If you have a problem, I want to solve it for you. If I have the skills, I’ll use them. If I need skills, I’ll learn them. I don’t forget that we build for people.

Languages and frameworks

TypeScript, JavaScript, Go, Rust, Python, React, Next.js, TanStack Start, SolidJS, Vue.js, SvelteKit, React Native, Node.js, Bun, Hono, tRPC, Zod, Drizzle, Prisma, Effect, GraphQL, Tailwind CSS, shadcn/ui, Vite, Vitest, Playwright

AI

AI agents, MCP servers, RAG, vector search (pgvector), LLM evals, OpenAI, Anthropic, and OpenRouter APIs, Vercel AI SDK, Cursor, Claude Code, AI-assisted code review, ComfyUI, generative image and video

Cloud and platform

AWS, Lambda, Cloudflare Workers, Durable Objects, KV, Kubernetes, Docker, Terraform, SST, Vercel, Supabase, GitHub Actions, OpenTelemetry, Datadog, Grafana, Sentry

Data and pipelines

PostgreSQL, MySQL, Redis, Kafka, ClickHouse, DynamoDB, AWS SQS, ETL, real-time ingestion, event-driven architecture, on-chain indexing, The Graph and subgraphs, Dune

Web3

DEX, DeFi, multisig treasury, token vesting, EVM, Solidity, Foundry, Hardhat, Viem, Wagmi, Alchemy, L2s including Base, staking, NFTs

Leadership

0-to-1 product development, engineering strategy, architecture, hiring, mentoring, cross-functional leadership, executive stakeholder management, vendor negotiation, budgeting, contractor management, AI-native engineering

Building something consequential?

I am exploring remote player-coach Director of Engineering roles where I keep building most of the week, and where technical judgment, product architecture, and team development matter equally.

timothykrell@gmail.com Download the resume (PDF)