DEX development company · engineering partner
DEX development services,
spot, aggregator and perpetual.
TrustChange is an EU DEX development company for Web3 teams and DeFi-adjacent operators. We engineer bespoke, client-owned decentralised exchanges — spot venues on AMM or CLOB, DeFi DEX aggregators, and perpetual DEXes — with the contracts, wallets, indexer, front-end and controls shipped as one platform. What you buy is engineering, not a rented template.
- EU-based engineers
- Independent contract audit
- Timelocked upgrades
- Written risk model
What "DEX development" means here
Decentralised exchange engineering without the rented-template strings
Most searches for a DEX development company surface AMM forks with a hosted UI and a licence-shaped roadmap. We work the other way. TrustChange engineers the contracts, the aggregator, the perp engine, the indexer and the front-end against your actual product — under your governance, on your infrastructure, with the controls and the audit trail baked in.
Deciding whether to build, fork or wrap? Start with CTO advisory. Order-book venues (centralised or hybrid) sit on crypto exchange development. Wider Web3 scope on blockchain development services.
DEX shapes
Three DEX shapes we build end to end
A DEX is not one product. Spot venues, aggregators and perpetuals share smart-contract discipline but need different economics, oracles and controls. Pick a shape and we engineer it around your governance and risk model.
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01
Spot DEX (AMM or CLOB)
A branded spot venue with either an AMM (concentrated or classic liquidity) or an on-chain CLOB, plus router, pools, fees and rewards under your governance.
- AMM or CLOB core
- Router & fee split
- Pools & incentives
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02
DEX aggregator
A DeFi DEX aggregator that quotes across pools and chains, splits orders across venues and settles best execution — with signed audit of every route.
- Multi-venue quoting
- Split-and-fill routing
- Best-ex evidence
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03
Perpetual DEX
A perpetual DEX with oracle-based pricing, funding, liquidations, insurance fund and position management — designed against a written risk model.
- Oracle & funding logic
- Liquidation engine
- Insurance fund controls
Stack
What sits behind a DEX development company engagement
Eight layers, one system. Every layer names an owner, a control and a piece of audit evidence — nothing is left implied under the "DEX" label.
Custody depth for operator keys: wallet and custody engineering. Rules mapping (where policy calls for it): compliance engineering.
| Layer | What we build |
|---|---|
| Smart contracts | Bespoke Solidity / Move / Rust contracts for pools, router, perp engine, insurance fund and governance Written against a threat model, versioned, and put through an independent audit before mainnet. |
| Oracles & market data | Multi-source price feeds with median / TWAP and fallback logic One oracle failure never moves a position on its own. |
| Router & aggregation | On- and off-chain routing across pools, chains and venues with split-and-fill Every route decision is stored with its inputs — replayable after the fact. |
| Wallet & signing | MPC or HSM wallets for operator keys; wallet-connect and passkey flows for users Operator keys never leave your trust boundary; timelocks on privileged actions. |
| Indexer & off-chain services | Event listeners, position and pool state, notifications, subgraph or bespoke indexer On-chain state and off-chain state stay reconciled by design, not by luck. |
| User surface | Web and mobile trading app under your brand: pools, positions, funding, statements Design tokens per tenant; no shared multi-tenant backend behind the brand. |
| Controls & monitoring | Wallet-risk screening at deposit, sanctions-aware access controls where required, anomaly monitoring on pools and positions Policy is set by your compliance team; controls run inside the flow. |
| Governance & upgrades | Multi-sig ownership, timelocked upgrades, on-chain proposals and a rehearsed rollback path Change is a process, not a redeploy from a laptop. |
Trade path
How a trade crosses a DEX we build
Every quote and every swap in the DEX goes through the same gates. Speed comes from tuning the pipeline, not from skipping a check or trusting the input.
- 01
Quote
Real time
The router quotes across pools, chains and venues; the winning route is stored with its inputs.
- 02
Sign
User-side
The user signs the transaction from their wallet; operator keys are never touched.
- 03
Screen
Sub-second
Wallet-risk and sanctions checks run where policy requires; the decision is written to the audit log.
- 04
Submit
Chain-bound
The transaction is submitted with slippage bounds and deadline; MEV-aware protection where configured.
- 05
Settle
On chain
The trade settles on chain; the indexer confirms inclusion and updates positions.
- 06
Reconcile
T+0 / T+1
Off-chain state reconciles against chain events daily; anomalies open cases automatically.
Delivery
How we deliver a DEX development services engagement
Five steps, in this order. DEX work runs inside the product backlog — no separate audit phase surprises at the end, no big-bang mainnet launch of an unaudited perpetual DEX.
- 01
Scoping
Weeks 1–2
We map the DEX shape, the assets, the chains, the governance model and the risk you must stand behind. Output: a scope, a risk model draft and a costed plan.
- 02
Architecture
Weeks 3–4
Contract design, oracle choice, router design, upgrade path and monitoring written down first. Threat model finalised before code.
- 03
Build
Two-week sprints
Contracts, router, indexer and front-end ship in slices. Static analysis, property-based tests and dependency scans on every merge.
- 04
Audit & hardening
Before mainnet
Independent third-party contract audit, load work on off-chain services, MEV and oracle-attack drills, rehearsed rollback.
- 05
Launch and run
Cutover + ongoing
Named engineers on 24/7 cover. Runbooks, dashboards, upgrade playbooks and the audit log are handed to your team on day one.
Engagement
Four ways to buy DEX development services
Same engineers, same standard. Only the commercial shape changes.
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Fixed-scope build
A defined DEX at a fixed price and date. Best when the DEX shape and governance are settled.
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Dedicated team
A standing squad with a lead. Best for long roadmaps and new pools or chains each quarter.
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Staff augmentation
Senior engineers inside your team. Best when you already own the plan and need contract or protocol depth.
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CTO advisory
Architecture and risk-model review before you commit. Best at the design stage.
Questions
FAQ: DEX development services
Six answers up front on scope, packaged-vs-bespoke trade-offs, aggregators, perpetual DEX risk, compliance posture and ongoing support. Bring the rest to the call.
What do DEX development services from TrustChange actually cover?
We engineer a branded, client-owned DEX end to end: the smart contracts (pools, router, perp engine, governance), the wallet and signing paths, the oracles, the indexer, the trading front-end and the controls that sit around them. Everything ships as source code in your repositories, with the IP assigned to you. There is no per-transaction fee and no shared multi-tenant backend. TrustChange is an engineering partner, not a legal-advice provider — nothing about licence status or supervisor approvals is claimed on your behalf.
How is your work as a DEX development company different from a packaged AMM template?
Packaged AMM templates give you a fork and a hosted UI, and lock you into their upgrade cadence. TrustChange engineers the contracts, the router, the indexer and the front-end against your actual product — pool design, fee split, incentives, oracle choice and governance — and hands you the code. A bespoke build takes longer up front, but you keep every contract, every operator key and every governance decision, and you avoid the roadmap and treasury lock-in that come with a rented DEX.
Do you build a DeFi DEX aggregator alongside the venue?
Yes. As a DeFi DEX aggregator development company we build routers that quote across your own pools, external DEXes and, where relevant, other chains, with split-and-fill for large orders. The aggregator stores the routing decision, the inputs and the executed route, so best-execution claims are auditable rather than declared. Aggregators can ship as a standalone product or inside the same front-end as the venue.
How do you approach perpetual DEX engineering and risk?
As a perpetual DEX development company we start from a written risk model — margin, funding, oracles, liquidation curve, insurance fund, position limits, oracle-attack scenarios and MEV exposure. Contracts are put through an independent audit before mainnet; upgrades run through a multi-sig with timelocks and a rehearsed rollback. Post-launch, monitoring watches pool balances, oracle divergences and liquidation health; anomalies open cases automatically rather than sitting in a Grafana panel.
How is compliance handled when the venue is non-custodial?
TrustChange is an engineering partner, not a law firm — your legal advisers and MLRO decide what controls apply to your DEX under MiCA, sanctions regimes and any local rules. On the engineering side, we can integrate wallet-risk and sanctions-screening providers at the point of user access, restrict access from prohibited jurisdictions where required, and produce an audit log an examiner can read. What is or is not lawful in a given market is not something we opine on.
Do you also run the DEX after launch, or hand it over?
Both are on the table. Most clients start with named TrustChange engineers on 24/7 cover during the first months while their own team ramps up, then take the platform in-house with runbooks, dashboards, upgrade playbooks and the audit log. Some keep us on as a dedicated development team or on staff augmentation for new-pool, new-chain and control roadmap work, or as CTO advisory on architectural calls.
Book a discovery call with a bespoke DEX development company
Bring the DEX shape, the asset list, the chain list, the governance model and the launch date. We come back with a risk model draft, an architecture view and a costed plan for a DEX you own end to end. No demo theatre.