I build at the center of product, engineering & design.
A strategist who ships. Eight-plus years leading product and growth for technical marketplaces — now writing the production software too, hands-on with AI-assisted development.
Director of Product & Design @ Ryse
- 22
- projects contributed to
- 700K+
- lines of code
- 1,200+
- commits
// the builder model
I don't work in a circle — I work at the center.
For decades, departments existed to manage scarce specialization. AI collapsed the price of it — the constraint flipped from headcount to judgment.
So I don't hand work off between product, engineering, and design. I own the whole loop — problem to shipped — and nothing gets lost at the seams.
The overlap is the whole job.
Strategy, growth & GTM
I take an ambiguous idea to a prioritized roadmap for marketplace and platform products — and I've supported $110M+ in capital commitments doing it.
AI-assisted development
Five live builds on Next.js 16, Convex, and TypeScript — written hands-on with Claude Code.
Design & UX
Design systems and interfaces that make complex products feel simple.
// featured builds
Seven production builds, shipped hands-on.
Real products across real-estate, fintech, infrastructure, wellness, and creator marketplaces — designed, built, and deployed with AI-assisted development.
- bartrA home for your home.
- RyseA marketing OS that runs on conversation.
- ArkaSovereign infrastructure colocation.
- BreakrThe operating system for creator marketing.
- MCOCommunity, meditation & mindful growth.
- AerithylAn AI dungeon sage for D&D 5e.
- Joshua & NorineA three-day celebration in Athens, Greece.
// track record
Eight years scaling technical marketplaces.
- 2024 — present$110M+ raised
Director of Product & Design @ Ryse
Own the roadmap and work in the codebase. Helped secure $110M+ in capital commitments and designed interfaces for capital-market investors trading lease-backed securities.
- 2025 — presentSolo, end-to-end
Founder & Developer @ bartr
Built a production real-estate marketplace hands-on — property search, listings, messaging, and dashboards shipped end to end.
- 2023 — 2026CAC −27% · +54%
Growth Advisor @ Breakr
Built Segment + PostHog dashboards. Cut CAC by 27%, lifted acquisition 54%, and raised creator response from 50% to 70%.
- 2020 — 20234× revenue · $100M+ GMV
Director of Growth & Marketing @ REZI
Led a team of 5 to 4× revenue ($5M → $20M) and scaled GMV from $5M to $100M+ across 14+ cities.
- 2017 — 2019¥100M fund
Co-founder & CMO @ nihub Innovation Center
Raised a ¥100M fund in Hangzhou and launched a ¥10M Coca-Cola accelerator.
// the system i keep building
Anyone can call a model. My edge is the machine around it.
I've now shipped this blueprint three times — for a fintech, a real-estate marketplace, and an enterprise GTM platform. Data infrastructure first — the system of record, the warehouse, the command center — then AI wired in on top, compounding on data no one else has. Work with me and this is the machine you get.
Transactional core
Intelligence layer
every action becomes new signal
// one blueprint · three production builds
bartr
158 tables · 236 backend fns · daily AI valuations
Ryse · Atlas
intelligence layer on the transactional core · agentic back office
LightBox GTM
six systems unified · natural-language command center
The AI layer isn't a chatbot bolted on.
It's a harness. A request routes to the right mode — each with its own tools, permissions, context, and prompt — where an agent reasons in a loop, acting through the same guardrails as the app, then streams its work back into the product. I've built this end to end, and the details are the expertise.
// how a request flows
one model · one queue · one audit trail
Request
drawer · Slack
Router
picks a mode
agent loop · reason ⇄ act
tools run as the user · RBAC re-checked
Stream
results back
Live
in the UI
// one router, purpose-built modes
gated per task
Copilot
in-product & Slack
- tools
- read · gated writes
- access
- acts as the user
- context
- CRM + warehouse
Author
PRDs, specs & issues
- tools
- docs · issue tracker
- access
- write to Linear
- context
- product + roadmap
Coder
autonomous coding
- tools
- repo · CI · browser
- access
- short-lived token
- sandbox
- isolated · egress-capped
Analyst
NL → warehouse
- tools
- read-only SQL
- access
- read-only
- context
- the warehouse
Each mode gates its own tools, permissions, context window, and system prompt — with compute and memory scaled to the task. Same model, purpose-built per job.
Runs as the user
Tools act with the caller's identity and scopes, re-checked on every call. Reads by default; writes are proposals, gated behind a human approval.
Isolated & auditable
Autonomous work runs in disposable sandboxes with capped egress — and every tool call lands on one shared queue and audit trail.
Proactive, not reactive
Agents watch the warehouse for signals — a dip, a stall, a spike — investigate, and surface what they found before anyone asks.
Build the system first, and the intelligence compounds on top of it. Three builds in, the blueprint only gets faster — and the next one is whatever we build together.
// what people say
Trusted by the people who've shipped alongside me.
Joshua went one step further and volunteered to build internal tools in JavaScript — talent like his usually does not stay idle for long.
John Boshier
Database Engineer · REZI
Joshua was an extraordinary leader. You can sleep soundly if you ever have the pleasure of having him on your team.
Joshua Kemp
People & Talent Leader · McKinsey · Schwarzman Scholar
He implemented Segment as our CDP and built a lead-scoring model that significantly improved conversion and reporting.
Jason Cotton
Director of Sales, Leasing & Marketing · REZI
His knowledge and deep understanding of digital marketing is something I have learnt from and am constantly in awe of.
Claire Lily Squire
CEO, Smile More Productions · Ex-Ubisoft
Joshua went one step further and volunteered to build internal tools in JavaScript — talent like his usually does not stay idle for long.
John Boshier
Database Engineer · REZI
Joshua was an extraordinary leader. You can sleep soundly if you ever have the pleasure of having him on your team.
Joshua Kemp
People & Talent Leader · McKinsey · Schwarzman Scholar
He implemented Segment as our CDP and built a lead-scoring model that significantly improved conversion and reporting.
Jason Cotton
Director of Sales, Leasing & Marketing · REZI
His knowledge and deep understanding of digital marketing is something I have learnt from and am constantly in awe of.
Claire Lily Squire
CEO, Smile More Productions · Ex-Ubisoft
Joshua handled messaging, sourcing, and execution — ultimately pulling through on the results. The course even taught me a thing or two.
George Pai
Startup Banking · Silicon Valley Bank
A well-organised entrepreneur with vast knowledge, a valuable network, and great communication skills. I would definitely work with him again.
Emilia Korczynska
VP of Marketing · Userpilot
He pulled together resources for GSMA's 4YFN at MWC Shanghai — attended by 18K professionals including 110+ global investors.
Ted He
Event & Partnership Development · GSMA 4YFN
Always focused on his customers' experience and thinking forward on ways to serve them better. A great mind to have around.
Greg Kischer
VSaaS for Multifamily
Joshua handled messaging, sourcing, and execution — ultimately pulling through on the results. The course even taught me a thing or two.
George Pai
Startup Banking · Silicon Valley Bank
A well-organised entrepreneur with vast knowledge, a valuable network, and great communication skills. I would definitely work with him again.
Emilia Korczynska
VP of Marketing · Userpilot
He pulled together resources for GSMA's 4YFN at MWC Shanghai — attended by 18K professionals including 110+ global investors.
Ted He
Event & Partnership Development · GSMA 4YFN
Always focused on his customers' experience and thinking forward on ways to serve them better. A great mind to have around.
Greg Kischer
VSaaS for Multifamily
// about
I'm a product and marketing leader who spent 10+ years driving growth for technical marketplaces — and somewhere along the way I crossed over into building.
Today I sit at the center of product, engineering, and design: shipping production software hands-on with AI-assisted development, so I can take an idea from strategy straight through to deployed code. I'm based in Durham, NC, and I speak Mandarin.
// let's talk
Let's build something.
Have a product that needs both sharp strategy and someone who can ship it? I'd love to hear about it.