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System Design & Architecture Portfolio

Selected architecture, system design, and engineering leadership work spanning enterprise integration, payments, distributed systems, blockchain infrastructure, DeFi protocols, and trading systems.

This is the historical Research route for the architecture portfolio. The canonical Jincubator architecture view is now Architecture Portfolio, with current v4 diagrams and Architecture-native navigation. For broader proof of work, see portfolio.johnwhitton.com.

Salus / Solver: Execution Infrastructure Evolution

Salus is the current system, but the story scans best as Solver -> Salus.

Solver enterprise architecture

Solver established the original arbitrage and route-execution foundation.

  • Tycho-driven route universe, graph updates, simulation, profitability gates.
  • Queue-separated hot path and execution queue.
  • Low-latency execution infrastructure signal.
Salus versus Solver migration

Salus evolves the Solver architecture into clearer trading/execution infrastructure.

Salus Implementation WIP
  • Postgres read models, replay validation, route-profit gates.
  • Strategy and execution staging separation.
  • Migration/refactor maturity signal.

Seamless Protocol

Seamless enterprise architecture
Seamless rebalancing flow
Seamless CoW intent rebalancing

Leverage-token architecture and CoW intent rebalancing contribution track.

  • Leverage-token mint/redeem and collateral-ratio controls.
  • Rebalance automation, keeper order creation, WIP solver execution.
  • Strong DeFi protocol and intent/rebalancing signal.

Eave DeFi Protocol

Protocol Architecture
Protocol hook execution

WIP intent-oriented DeFi protocol architecture.

  • Arbiter, Allocator, Solver, hook, flash-router, ERC-7683 roles.
  • Hook-triggered execution and solver payload risk.
  • Intent execution architecture signal.

Eco

Eco enterprise architecture
Eco Routes prover

Eco Routes proving architecture contribution track.

  • Settlement state, destination world state, and fulfilled-intent proof ladder.
  • Solver/filler lifecycle and reward release.
  • Cross-chain proving and settlement signal.

EAVE

EAVE enterprise architecture

Substrate/FRAME and parachain architecture track.

  • Runtime, node service, pallets, collator lifecycle, relay-chain boundary.
  • Project-owned versus upstream framework evidence.
  • Blockchain infrastructure breadth signal.

Emasset Prototyping

Emasset enterprise architecture

Payments/API prototype-to-production readiness analysis.

  • OpenAPI, protobuf, gRPC, grpc-gateway, generated artifact governance.
  • Payments, KYC, fiat rails, ledger, custody, settlement readiness gaps.
  • Fintech platform architecture signal.