Trading frontend and order lifecycle
Scope market views, order entry, open orders, fills and cancellation states. Define supported order types, partial fills, rejected orders and how the interface recovers after a dropped connection.
Centralized exchange technical services · CEX
Build the CEX trading systems your product needs.
Connect the trading interface, order lifecycle, account ledger, market data and operator tools around one defined workflow. Review your existing matching and account systems first, then agree the modules, dependencies and acceptance checks for delivery.
01
Choose the CEX modules to develop
A centralized exchange product contains separate systems. Confirm the owner and interface of each one, then define the software modules included in this engagement.
Order and matching interfaces
Connect agreed order gateways and matching-system APIs. Define request identifiers, sequencing, duplicate handling and status recovery. Custom matching-engine development is evaluated separately during discovery.
Ledgers and reconciliation
Map available, reserved and settled balances to the agreed ledger rules. Scope posting records, reconciliation and operator exception handling against the authoritative account system.
Market-data APIs and operator permissions
Integrate order-book and trade feeds, REST or WebSocket APIs, role-based admin tools and audit logs. Define source coverage, reconnect behavior and permissions for each operator action.
02
Deliverables tied to a defined system
The proposal lists included modules, third-party interfaces, environments and the customer responsibilities needed for implementation.
Workflow, state and interface map
Document order and account state transitions, source-of-truth systems, API contracts, permission boundaries and recovery rules for the selected workflow.
Selected trading and operator modules
Deliver the agreed frontend, API adapters, ledger or reconciliation modules and operator tools, together with source code, environment setup and integration notes.
Test records and operating handoff
Provide expected and observed outcomes for order, balance and recovery scenarios. Record deployment steps, monitoring, rollback and unresolved dependencies for the next release decision.
03
Accept the system against agreed evidence
Agree the test environment, data and target behavior before development. Any performance target needs a defined workload and a measured result.
Check the complete order lifecycle
Exercise submission, rejection, cancellation, partial fills and reconnect recovery for supported order types. Compare frontend state with the authoritative order and fill records.
Reconcile order activity and balances
Check reservations, postings, duplicate events and exception recovery against the agreed ledger rules. Keep mismatches and operator resolutions visible in the acceptance record.
Test permissions and the agreed workload
Verify operator roles and audit records. If load testing is included, record data volume, order mix, infrastructure and measured limits rather than applying a general throughput claim.
Confirm the version and handoff
Identify the release commit, test results, environment access, rollback steps and operating owner. Production rollout, custom matching-engine development, and custody-provider or settlement interface integration each need an agreed scope.
Common project questions
Understand the engagement before requesting a quote.
Can you work with an existing CEX or matching provider?
Yes. Start with the documented order, matching, account and market-data interfaces available to the project. We scope selected integrations or modules and identify provider-dependent behavior before estimating delivery.
Is a custom matching engine included?
Only if separately specified after technical discovery. Supported order types, sequencing, account interaction, recovery and a representative performance test must be defined first. A trading frontend or API integration does not by itself establish a complete matching engine.
How are cost and schedule determined?
The estimate depends on the selected modules, current code, interface access, ledger rules, operator controls and test requirements. Discovery produces a milestone plan and written scope; existing starter prices are not a quote for a complete CEX.
Does this service include custody or permission to operate an exchange?
The engagement is for software development and integration. The customer defines custody providers, financial-operation authority and legal or licensing requirements. Those responsibilities and any related technical integrations are agreed separately.
Turn the brief into a clear delivery scope
Share the workflow, existing systems and launch target to start the assessment.