Scalable Digital Asset Trading Platform Engineering
A modular brownfield feature integration combining secure custodial wallet infrastructure, multi-chain transaction handling, and seamless trading workflows - delivered in 6 months.
Outcome Snapshot
2
blockchains integrated for multi-chain token trading
100%
custodial security coverage with enterprise wallet APIs
1
unified interface for end-to-end asset exchange
3
smart contract token standards supported across ecosystems
Client
A UK-based fintech and digital asset startup with presence in the UK and Japan markets. The client engaged Systango to construct and integrate a secure, full-featured trading module directly into their live brownfield crypto platform.
Challenge
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Brownfield integration complexity: Integrating a new, high-concurrency trading module into an active platform without disrupting live core operations.
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Missing trading capability: The platform lacked native trading features, preventing users from executing digital asset transactions without leaving the product.
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Multi-chain cost and latency balance: Balancing blockchain transaction execution speeds and gas costs across both Ethereum and Polygon networks.
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Custodial security requirements: Implementing secure asset custody and API-driven settlement while maintaining a responsive trading experience.
Objectives
- Take technical ownership of the trading module design and delivery within the existing architecture.
- Engineer seamless, end-to-end trading workflows into the brownfield application.
- Implement multi-chain support across Ethereum and Polygon networks.
- Integrate enterprise custodial wallet solutions for secure asset custody.
- Develop API-driven settlement and transaction handling mechanisms.
- Deliver a high-performance trading UX alongside real-time on-chain settlement.
What We Built
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Integrated Digital Asset Trading Module: End-to-end trading workflows embedded into the live brownfield system to execute seamless asset exchanges.
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Multi-Chain Architecture Engine: Infrastructure supporting smart contract token standards (ERC-20, ERC-721/1155) across Ethereum and Polygon blockchains.
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Custodial Wallet Integrations: Enterprise-grade security layers incorporating custodial wallet platforms (BitGo, Fireblocks) for safe digital asset holding.
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API-Driven Settlement Workflows: Backend API services managing real-time trade matching, order handling, and chain-aware transaction execution.
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High-Performance Trading Interface: Frontend trading UX designed for rapid order entry, portfolio view updates, and live asset tracking.
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Modular Integration Framework: Decoupled backend architecture connecting seamlessly with existing platform security and access control mechanisms.
Impact
Launched
the full trading platform feature seamlessly within the live brownfield architecture.
Guaranteed
secure asset holding and custody through enterprise custodial wallet integrations.
Enabled
multi-chain token transactions across Ethereum and Polygon networks.
Delivered
multi-chain token transactions across Ethereum and Polygon networks.
Build Facts
Platform
Web App
Multi-Chain Crypto Infrastructure
Custodial Wallet APIs
Focus
Digital Asset Trading
Custodial Security Integration
i-Chain Token Standards
Brownfield System Integration
Let’s talk, no strings attached.
