Web3FinTechHealthTechTradingScroll

Product engineering for exchanges, fiat gateways and on‑chain infrastructure.

Onboarding and KYC, payments and checkout, health data products, trading systems, real‑time Solana data.

What we do

Four directions, done end to end.

Web3, FinTech, HealthTech and Trading, from discovery to production and the months after. One team owns architecture, product, delivery and support, so nothing falls between vendors.

01
Web3

Custom Web3 development

Contracts, front‑ends and back‑ends built by senior engineers, audited and tested before they touch mainnet. Solana first, EVM when the project needs it.

02
FinTech

Exchange and gateway products

Signup‑to‑activation flows, identity verification, checkout and payment routing for crypto exchanges, fiat on‑ and off‑ramps and B2B FinTech. Measured on conversion, approval rate and retention, not on features shipped.

03
HealthTech

HealthTech products

Apps and back‑ends that handle health data: wearable and HealthKit integrations, care plans and AI coaching flows, with the consent and audit trail a clinical or compliance reviewer expects. Every recommendation traces back to the data it came from.

04
Trading

On‑chain data and trading infrastructure

Parsers, streams and APIs that turn raw Solana transactions into decisions in milliseconds. Trading systems with risk controls, inventory management and historical replay. Hyperstream is the productised version.

05
Across all four

Product and delivery operations

A product manager inside your team who owns the backlog, the specs and the rituals. Spec‑to‑release in ten days instead of four weeks, across several products at once.

Product · Hyperstream

Every Solana DEX, one normalised stream.

A private real‑time service that watches Raydium AMM, Meteora DAMM v2, Pump AMM, Pump.fun and Heaven, decodes every instruction and emits swap and liquidity events with price, volumes, reserves and fees. Server‑Sent Events over HTTP, bearer auth, filter by DEX, pool or event type.

  • Trading bots and strategies
  • Market monitoring
  • Risk and compliance flags
  • OHLCV and liquidity analytics
  • Market making inventory
hyperstream/v1/subscribe/pools?dex=raydium,pump_amm
SSE · 4 ms
14:02:11.4raydiumswapSOL/USDC12.40 SOL → 2 118.36 USDC
14:02:11.4pump_ammbuyWIF/SOL0.85 SOL → 41 280 WIF
14:02:11.5meteoraadd_liqJUP/USDC+ 4 000 JUP / 3 210 USDC
14:02:11.5raydiumsellBONK/SOL2.1M BONK → 0.62 SOL
14:02:11.6pump_funcreateNEW/SOLbonding curve initialised
Licence
35 000 USDT
One‑time. Full package, runs on your infrastructure, you own deployment and privacy.
Subscription
5 000 USDT / month
Dedicated server, all DEXs, maintenance and monitoring handled by us.
Selected work

Numbers our clients report back.

Ask for the full case studies
01Crypto exchange/Onboarding

Signup, KYC and first deposit rebuilt. Onboarding conversion went from 10% to 32.5%.

32.5%
onboarding conversion, from 10%

Activation up 20%, retention up 15%.

  • Signup
  • KYC
  • First deposit
  • Conversion
Ask for the full case file
SIGNUPKYCFIRST DEPOSITONBOARDING CONVERSIONBEFORE10%AFTER32.5%010203040%
Illustrative drawing. Not the client's interface.
02Social crypto app/KYC and onboarding

Identity verification orchestrated across providers and jurisdictions.

Multi‑market
one flow over several providers

Automated compliance flag detection runs inside the flow.

  • KYC orchestration
  • Compliance flags
  • Onboarding
Ask for the full case file
APPLICANTROUTERcountry · riskPROVIDER APROVIDER BPROVIDER CfallbackREVIEW QUEUEFLAG · ID mismatch
Illustrative drawing. Not the client's interface.
03Payments platform/Scale

Payment products across several PSPs and routing configurations.

$50M+
monthly volume

Operated at up to 500K monthly active users.

  • Payments
  • PSP routing
  • Operations
Ask for the full case file
CHECKOUTROUTING RULESgeography · methodcost · approval ratePSP 1PSP 2PSP 3degradedFAILOVER WHEN A PROVIDER DEGRADES
Illustrative drawing. Not the client's interface.
How we work

Weekly releases, one accountable team.

Fixed‑scope projects or a dedicated team on a monthly rate, priced in writing before we start. Direct access to the senior engineers and architects doing the work.

Discovery
Weeks 1-2

Jobs to be done, customer journey, architecture and a PRD you can put in front of investors.

Scope and price after the call
Squad
Monthly rate · releases every 1-2 weeks

A dedicated squad of three to eight. Every release is tested, reviewed and deployed with a rollback path. Then monitoring, 24/7 support across time zones, and the same people who built it answering the pager.

Scope and price after the call
Hyperstream licence
One‑time

Full package, runs on your infrastructure, you own deployment and privacy.

35 000 USDT
Or 5 000 USDT / month as a subscription on a dedicated server we run
The studio

Thirty people across Europe and Asia. Building for crypto since 2017.

Engineers, designers and product managers who have shipped exchanges, gateways and trading systems as operators, not only as vendors. We take on a handful of clients at a time and stay for years.

Henry Golfern
Henry Golfern
Founder
Steve White
Steve White
Co‑founder
CHANITY· EST. 2017 ·
Contact

Tell us what you are building.

We reply within one business day with a first take and the people who would work on it.

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