Blockchain development company for production on-chain systems
We design and build the on-chain systems that have to work under real load: payment settlement, compliant real-world asset tokens, and non-custodial trading automation. Contracts, off-chain services, indexing and monitoring come from one senior team.
MappOptimist is a blockchain development company that builds production on-chain systems for fintechs, asset managers and Web3 platforms: high-throughput settlement, RWA tokenization with transfer restrictions, and non-custodial trading bots on Solana and Polygon. Our India-based engineers deliver remotely worldwide, either as an end-to-end build team or as Solidity and Rust developers who join your team.
Problems we solve
Settlement is slow and expensive on banking rails
Cross-border payments pass through intermediaries that add days and fees. Moving settlement on-chain only helps if the system sustains millions of transactions a day at sub-cent cost, with compliance and auditability intact.
Tokenizing real-world assets is a compliance problem first
An RWA token has to match the off-chain asset, respect who is allowed to hold it and in which jurisdiction, and survive audit. A plain ERC-20 with an app-level allowlist does not meet that bar.
Trading automation that is fast but not safe
Copy-trading and prediction-market bots need sub-second reaction, but a fast bot without position limits, kill switches and non-custodial signing is a liability to your users and your brand.
Smart contracts that nobody wants to put live volume through
Large contract surfaces, no load testing and no plan for independent review make launch day a gamble. You need a small trusted surface, tests that reflect real usage and a clean handover to your auditors.
You cannot hire Solidity or Rust engineers fast enough
Senior smart contract and Solana developers are scarce and slow to recruit. Your roadmap needs people who have shipped production contracts, not a six-month hiring cycle.
What we build
Payment and settlement infrastructure
High-throughput settlement on Solidity and L2 scaling, with intelligent batching to cut per-transaction overhead and an identity and compliance gate built into the transaction flow. Banking and treasury systems connect through a reconciliation layer. The same patterns apply to stablecoin and cross-border payment settlement.
Real-world asset tokenization platforms
Compliant token contracts on Ethereum with transfer-restriction logic at the protocol level, so eligibility is a property of the asset rather than an app checkbox. Permissioned standards such as ERC-3643 formalise this model of KYC-gated holders and restricted transfers. We pair contracts with a custody layer, off-chain reconciliation and an issuer and holder portal in React.
Smart contract development
Solidity contracts for tokens (ERC-20, ERC-721, ERC-1155), settlement, custody and market interactions. We keep the contract surface minimal, test against realistic load, review internally and prepare the codebase for independent third-party audit before any live volume.
Crypto trading bot development
Copy-trading bots in Rust on Solana with event-driven indexing and a low-latency decision loop, and prediction-market bots with a Python strategy layer settling on Polygon. Every bot has a risk engine that bounds sizing and exposure before a trade reaches the chain, plus backtesting and a shadow period before live capital.
Solana development in Rust and Anchor
Solana programs and off-chain services built with Rust and the Anchor framework: event indexing, RPC path tuning, slippage controls and retry logic for congested blocks. Signing stays with the user through permissioned, non-custodial flows.
Hire blockchain and Solidity developers
Solidity, Rust/Solana, Web3 frontend (dApp) and blockchain DevOps engineers who join your team on a monthly basis, work in your repositories and ceremonies, and scale up or down without long-term lock-in.
How an engagement runs
Model the trust boundary
We map what must live on-chain and what should not: custody model, who signs, compliance rules, oracle and off-chain data dependencies, and the throughput and cost targets the design has to hit.
Architect contracts and off-chain services together
Chain choice (Ethereum, an L2, Polygon or Solana), token standard, indexing, reconciliation and monitoring are designed as one system, with the smallest contract surface that does the job.
Build, load-test and review
We ship one end-to-end path first, test it under realistic load, and harden signing and permissions. Contracts go through internal review and are handed to your chosen independent auditor before release.
Launch with monitoring and kill switches
Live dashboards, alerts on limit breaches and anomalies, and kill switches go in before real volume. We then scale throughput, strategies or asset types in measured steps.
Ways to work with us
End-to-end build
A senior pod owns contracts, infrastructure, integrations and the application layer against outcomes you define. This is how our settlement, tokenization and trading-bot systems were delivered.
Dedicated blockchain team
A cross-functional team of smart contract, backend and frontend engineers with a team lead, working inside your roadmap and rituals for sustained product development.
Individual blockchain developers
Hire Solidity or Rust/Solana developers who slot into your existing team on a monthly rolling basis. You interview and approve everyone before they start.
Need individual engineers rather than a project? See roles and monthly pricing for IT staff augmentation.
Technology we work with
Case studies
On-chain settlement network
High-throughput blockchain infrastructure that settles cross-border payments at scale — for a fraction of a cent per transaction.
Read the case study →Web3 · TokenizationReal-World Asset Tokenization System
On-chain representation, custody and settlement for real-world assets, with compliance built in.
Read the case study →Web3 · TradingOn-Chain Copy-Trading Bots
High-performance bots that mirror leading wallets on-chain with disciplined risk controls.
Read the case study →Web3 · Prediction MarketsPrediction-Market Bots
Automated, risk-aware participation in on-chain prediction markets.
Read the case study →Frequently asked questions
What kind of blockchain systems has MappOptimist built?
Production systems rather than prototypes: an on-chain settlement network for a payments infrastructure provider that settles 2.4 million transactions a day at $0.001 each, a compliant real-world asset tokenization system on Ethereum, copy-trading bots in Rust on Solana, and prediction-market bots settling on Polygon. Each is documented as a case study on this site.
Do you build RWA tokenization platforms with KYC and transfer restrictions?
Yes. On our RWA tokenization system, transfer-restriction logic sits in the token contracts themselves, so only verified, eligible participants can hold or receive tokens. We pair that with a custody layer, reconciliation between on-chain state and off-chain records, and an issuer and holder portal. Permissioned standards such as ERC-3643 follow the same model, and we choose the standard with you.
Do you audit smart contracts?
We do not sell formal security audits. We keep contract surfaces small, write tests that reflect real usage, load-test critical paths and review code internally. Before launch we prepare the codebase and documentation for an independent third-party auditor of your choice and support remediation of their findings. The contracts in our case studies were independently audited before handling live volume.
Which chains do you work with?
Our delivered work covers Solidity contracts on Ethereum and L2 scaling, Polygon for prediction-market settlement, and Solana programs in Rust with the Anchor framework. Our blockchain engineers also work with BNB Chain and Hyperledger. We recommend a chain based on throughput, cost, finality and the compliance model you need, not on preference.
Can you build a crypto trading bot that stays non-custodial?
Yes. Our Solana copy-trading bots propose trades through permissioned signing flows while users keep their keys. A risk engine bounds position size and exposure per follower before any trade reaches the chain, and live dashboards, alerts and kill switches let operators stop activity instantly. Every trade is logged with a clear position and P&L history.
How much does it cost to hire blockchain developers?
Our published monthly rates for a dedicated blockchain engineer are $3,500 for 1-2 years of experience, $6,000 for 3-5 years and $9,500 for 6+ years, with no recruitment fees. A 3-month commitment saves about 10% and a 6-month commitment about 20%. End-to-end builds are quoted per scope after a short discovery call.
How quickly can a blockchain engineer start?
For most roles we shortlist candidates within a few days and onboard the selected engineer in about a week. You interview and approve every engineer before they start. Senior Solidity and Rust profiles depend on current bench availability, so we confirm availability, resumes and rates within one business day of receiving your requirement.
Building settlement, tokenization or trading infrastructure?
Tell us what has to go on-chain and the volume, compliance and custody constraints around it. We will come back within one business day with how we would architect it.