Blockchain, Web3 & AI Engineering
Ledger-grade systems for teams that need production, not prototypes.
Smart contracts, DeFi protocols, tokenization rails and on-chain AI automation.
We design, build and audit secure on-chain platforms — and the AI that runs against them. Take one piece or hand us the whole stack.
| Section | Groups | What it covers |
|---|---|---|
| Blockchain | 6 | Chain development, chain frameworks, L1 & L2, smart contracts, enterprise networks, protocol advisory |
| AI | 3 | AI engineering, data & analytics, AI platform |
| Solutions | 4 | DeFi, tokenization, trading & custody, Web3 products |
60 services across 13 groups. Every one has a scope, a price and acceptance criteria agreed before work starts.
The full catalogue
Blockchain
| Group | Services |
|---|---|
| Chain Development | Custom Blockchain · Public Chain · Private & Permissioned · Sidechain · Chain Migration & Upgrades · Node & Infrastructure |
| Chain Frameworks | Cosmos SDK · Polkadot & Substrate · OP Stack · Arbitrum Orbit · Polygon CDK · ZK Stack · Avalanche Subnets |
| Layer 1 & Layer 2 | Ethereum · Solana · Polygon · BNB Chain · Base · Optimistic Rollups · ZK Rollups |
| Smart Contracts | Development · Audit · Upgradeable Contracts · Gas Optimisation · Formal Verification |
| Enterprise Blockchain | Consortium Networks · Supply Chain Traceability · Trade Finance · Healthcare Records · Carbon & ESG Registries · Identity & Credentials |
| Protocol & Advisory | Protocol Engineering · Tokenomics Design · Whitepaper & Documentation · Technical Due Diligence · Architecture Review |
AI
| Group | Services |
|---|---|
| AI Engineering | AI Agents & Automation · RAG & Knowledge Systems · Generative AI · Conversational AI |
| Data & Analytics | Document Intelligence · AI on On-chain Data · Predictive Analytics · Fraud & Anomaly Detection |
| AI Platform | MLOps & Deployment · Model Evaluation · AI Integration |
Solutions
| Group | Services |
|---|---|
| DeFi | Protocol Development · DEX Development · Lending Markets · Staking & Yield |
| Tokenization | RWA Tokenization · Token Development · NFT & Gaming |
| Trading & Custody | Exchange Development · Wallets & Custody · Payment Rails |
| Web3 Products | dApp Development · DAO Tooling · Web3 Integration |
Networks we have actually shipped on. No client logos, no false endorsements.
Ethereum Solana Polygon BNB Chain Arbitrum Base Avalanche Optimism
Bitcoin Polkadot Cosmos NEAR Hyperledger Fabric Chainlink zkSync Starknet
Linea Scroll Cardano Tron Sui Aptos The Graph IPFS
Written from the repositories and the live sites. Where a claim could not be checked, it is not made — no user counts, no uptime figures, no revenue numbers.
| Project | What it is | Industry | Live |
|---|---|---|---|
| GILDer Finance | Capital-protected term deposits, live on Base | DeFi | gilderfinance.com |
| Prediction Market | Wallet-native markets with live pricing, on Polygon | DeFi | — |
| Gamesweeps | Player portal with wallets, payouts and live support | Gaming | gamesweep.bitcoingames.shop |
| EmployeeDesk CRM | Attendance, work tracking and a desktop timer | SaaS | employeedeskcrm.com |
| BSD Manufacturers | Truck and trailer parts catalogue with quote requests | Manufacturing | bsdmanufacturers.au |
GILDer Finance in more detail — GIL token on Base mainnet, with the Uniswap V3 pool and liquidity position set up by us; an upgradeable system behind a proxy covering treasury, lending, bond marketplace, governance, price-band executor and de-peg guard; solvency tested as an economic stress simulation rather than a unit test, because the risk is reflexive rather than a bug; and a public protocol-health page where every headline figure is sourced from on-chain activity. It passed an external first-pass code review, and the response and the hardening that followed are written up in the repo.
| Layer | Tools |
|---|---|
| Contracts | Solidity · Rust · Anchor · Vyper · Move · Yul |
| Build & test | Foundry · Hardhat · Forge · fuzzing · invariant tests · fork testing |
| Security | Slither · Mythril · Echidna · Tenderly · gas profiling · formal specs |
| Web3 | viem · wagmi · ethers.js · WalletConnect · Safe · account abstraction · passkeys |
| Data & indexing | The Graph · Subsquid · Alchemy · QuickNode · Dune · event pipelines |
| Storage & oracles | IPFS · Arweave · Chainlink · Pyth · Pinata |
| AI | Claude · GPT · Llama · Mistral · Gemini · MCP · LangGraph · LlamaIndex |
| Retrieval | pgvector · Qdrant · Pinecone · Weaviate · hybrid search · rerankers |
| Product | React · Vite · Tailwind · Node.js · Express · PostgreSQL · MongoDB · Docker |
| Stage | What happens | |
|---|---|---|
| 01 | Discovery | We map the problem, users and constraints, then agree what success actually looks like before a line of code is written. |
| 02 | Architecture | Chain selection, contract design, threat model and data flow — documented, reviewed with you and signed off. |
| 03 | Build & Audit | Sprints with working demos, automated tests on every merge, and an internal security review at each milestone. |
| 04 | Launch & Scale | Mainnet deployment, monitoring, incident runbooks and ongoing support as usage and requirements grow. |
Four things we hold to
- Security is the default — threat modelling, test coverage and peer review are part of the build, not a service you buy afterwards.
- Full transparency — shared repos, live boards and demos every sprint. You see progress as it happens, not in a monthly slide deck.
- Milestone-based delivery — scope, price and acceptance criteria fixed per milestone, so budget and timeline stay predictable.
- Senior engineers, direct — you work with the people writing the code. No account-manager relay, no silent handoffs to juniors.
FinTech & Banking · Real Estate · Supply Chain · Healthcare · Gaming & Metaverse · Energy & Utilities
What size of projects do you take on?
Everything from a single smart contract and its audit to a full multi-chain platform with front end, backend and infrastructure. If the scope is smaller than a full build, we will say so and quote it as such.
How long does a typical build take?
A focused MVP usually lands in 4–8 weeks. Larger platforms run in milestones, each with its own scope and delivery date agreed up front, so you always know what is coming next.
Do you audit contracts you did not write?
Yes. We take on standalone audits of existing codebases and deliver a written report with severity ratings, reproduction steps and recommended fixes.
Who owns the code and IP?
You do. Full ownership of source, contracts and infrastructure configuration transfers to you on delivery, with repository access from day one.
Can you work with our in-house team?
Yes — we regularly embed alongside internal engineers, whether that means owning one service, reviewing designs or pairing on the trickiest parts of the system.
Email sales@zynledger.com with a short description of what you want to build. We come back with initial questions and set up a call to scope it properly.
Hiring is open to applications even when no role is listed — careers@zynledger.com.
ZynLedger · Blockchain, Web3 & AI Engineering · zynledger.com
