Do Hoang Phi

ABOUT ME

I began in web3 communities, writing market analysis and building trust with readers. I then moved into paid advertising, where every idea can be tested and measured, and gained hands-on experience through a marketing internship. That experience set my direction: growth marketing, where marketing and data work as one.

Experience

Apr–Jun
2026
Marketing Intern · Saint Gard
Meta Ads for messages, 90+ creatives and 40+ quick creative tests, daily and weekly reports.
Now
Founder · Spaca, Lockabox
Built and launched two products with AI agents: landing pages, SEO, waitlist, signup tracking.
Now
Founder · Lockabox
Built a memecoin app alone in about 2 days with AI agents: spec, brand, growth loop, launch on X.
2023
Affiliate & community · Nami.Exchange
Community posts and Telegram outreach: 17 referral sign-ups with no ad spend.

Education

2025–
2028
National Economics University
E-learning Program, Hanoi

Paid ads

Meta Ads for messages
Quick creative testing
Funnel metrics

Content

AI images & video
Product visuals
Copywriting

Data

Reporting in Sheets
Competitor research
UTM & signup tracking

Tools

Meta Ads
Google Sheets
Shopify
Claude
ChatGPT
Google Flow
Canva
CapCut

See my work → Email me LinkedIn ↗

How I work

I do my best work in teams that move fast, help me learn, and use data.

01
Fast response

I check results every day, flag the winning ad the same day and propose moving budget to it, not at the end of the month.

daily and weekly reports at Saint Gard
02
Fast learning

Each project needed a skill I didn't have yet: ads, creative, SEO, building a product. I learned each one by doing the work.

90+ creatives in 2 months; built spaca.xyz alone

90+ creatives in 2 months; launched Lockabox with AI agents
03
Works with data

Cost and conversion numbers decide what gets more budget, not personal taste.

40+ quick creative tests at Saint Gard; cost per message −24% at the same daily spend

I plan before I startSplit the task into steps and agree on the goal first.
I take direction wellThe team sets what and why; I own how.
AI drafts, I decideAI tools make the drafts; I review and choose what ships.
I ask for feedback earlyShow work early, take the feedback, fix it fast.
Same mistake, only onceMistakes happen. I make sure the same one doesn't happen twice.
I send updates unaskedMy manager always knows where things stand.

EXPERIENCE

FourThree projects. Open one for the case study: the objective, my scope and the result.

View case → .01 Saint GardApr–Jun 2026 Marketing intern
View case → .02 Nami.Exchange2023 Affiliate & community
View case → .03 SpacaLive Founder
View case → .04 LockaboxLive Founder

Saint Gard

Marketing intern · Apr — Jun 2026

Objective

Saint Gard sells premium menswear (VND 1.5–6.5M) through Facebook ads that open a Messenger chat. My job: get more customer messages, for less, from a daily budget of around VND 1.5M at peak, by finding the images and offers that work.

My scope

Wrote every prompt and made 90+ static ads alone with AI: Claude for prompts, Google Flow for images
Studied competitor ads in Meta Ad Library and on fanpages and proposed the direction: product shots with an offer
Proposed 40+ image and offer tests; once the lead approved, each ran about a day and the ad with more messages at a lower cost stayed on
Wrote the daily and weekly reports the lead used in weekly budget reviews; made ~60 product visuals for the web store

Result (ad data 11 May – 5 Jun 2026)

−24%cost per message at the same ~VND 1M daily spend: 31.9K (13 May) to 24.3K (4 Jun); ~22–25K after the first week
451customer messages in 26 days, VND 29.3K each on average
90+static creatives in 2 months

saintgard.vn ↗Facebook ↗

Nami.Exchange

Affiliate programme member · 2023

Objective

Nami is a Vietnamese crypto exchange. As a user in its affiliate programme, I set my own goal: bring in new traders with no ad budget, in a market where people don’t trust easily.

My scope

Kept Nami’s Facebook group talking: memes and light posts most days, market analysis when there was something worth explaining
Found new people through cold outreach in Telegram groups
Walked each newcomer through signing up and getting started on the exchange
Picked by the group admins as a featured contributor

Result (2023, from the affiliate dashboard)

17sign-ups through my referral link, VND 1.2M+ in commission
309posts in the group in a year
0 ₫spent on ads

Spaca

Founder, built with AI agents

Objective

Give web3 buyers a safer way to get whitelist spots and allocations, which today trade in DMs where the buyer can only hope the seller delivers.

My scope

Studied 5+ similar platforms before choosing a position
Pivoted to web3 item auctions: clearer demand, a shorter path to revenue
Built the brand and the landing versions with AI agents
Wrote the posts on X and set up the analytics

Result (Sep 18–25, 2026)

Liveat spaca.xyz, auctions in beta
456page views from 29 visitors, 28% bounce
8+signups before payments open, mostly from my posts on X

spaca.xyz ↗X @Spaca_xyz ↗

turn your X into an asset
you check charts all day. gold, btc, your bags…
the account you've built on X is an asset too24 Sep 2026View on X ↗ Web3 items, bid in the open
Collateral first. Money back if nothing arrives
spaca auctions, now in beta →24 Sep 2026View on X ↗ Spaca to make one thing easy:
getting the right people on X to talk about your launch, at the right time
early access is live 👇24 Sep 2026View on X ↗

Spaca landing page: web3 items, bid in the open

Landing page · web3 item auctionsVisit spaca.xyz ↗

Lockabox

Solo founder · idea, product, brand and launch · Sep 2026

Objective

Make finding a new memecoin fun and free, for new memecoin traders and long-time crypto players alike: roll a case, get a real coin that is trading now, then decide yourself whether to buy.

My scope

Took it from idea to live product alone in about 2 days: wrote the brief and positioning, had AI agents build it, then reviewed and tested every step
Built growth into the product instead of paid posts: free rolls, a public Best pulls board and share images give players their own reason to post
Designed Locky, the pixel mascot the brand is built around

Result (launch, 28–30 Sep 2026)

44visitors in the first 3 days, with no ad spend
~3pages per visitor (130 page views)
490cases opened in the first 2 days

lockabox.fun ↗

Lockabox banner: what do I buy today? Open a box. Locky says pick me

Meet Locky: a pixel box in a backwards cap, financial advice given: 0

DIRECTION

From performance marketing to growth: marketing and data in one role. π-shaped, not a generalist.

now
Run & test
Meta Ads on small budgets, many creative tests, daily reports.
next
Own a full funnel
Bigger budgets, campaigns from first view to purchase, deeper analysis.
goal
Growth marketer
Creative, acquisition and measurement in one role.