Contact person: sandra

Phone:Show

Email:Show

Location: Remote Cooperation

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"OverviewI’m looking for an experienced Node.js developer to help maintain and update my self-hosted crypto market-making bot — software that helps token projects manage CEX liquidity (order books, spreads, depth, price ranges) on their own server without third-party custody.This is existing production code (not a greenfield project). Work may include bug fixes, dependency updates, new features, exchange connector improvements, CLI/WebUI enhancements, and deployment support on Linux.Tech stackRuntime: Node.js 22+, npmDatabase: MongoDBBackend: Fastify, Socket.io, WebSocketsProcess management: PM2Testing: JestIntegrations: Multiple centralized exchange REST/WebSocket APIsOptional: Telegram bot, WebUI API, TypeScript (types for WebUI API)Supported exchanges (examples)Azbit, P2PB2B, StakeCube, Coinstore, FameEX, NonKYC — plus potential new CEX connectors.ResponsibilitiesUpdate and refactor existing modules with minimal regression riskFix bugs and improve reliability (order placement, spread logic, liquidity modules)Keep dependencies current and resolve security/compatibility issuesAdd or improve exchange API connectorsExtend CLI (mm), config system, and monitoring/loggingWrite/maintain Jest tests for changed areasDocument changes in English (code comments, PR-style notes)Requirements3+ years professional Node.js experienceStrong async JavaScript, error handling, and debugging in productionExperience with REST APIs and ideally WebSocketsComfortable with MongoDBFamiliarity with Linux server deployment (Ubuntu/CentOS, PM2, logs)Ability to read and extend a large existing codebase without rewriting from scratchClear written English for code and communicationGit workflow: branches, focused commits, no force-push chaosNice to haveCrypto/trading bot or market-making experienceCEX API integration (auth, rate limits, order books, balances)Fastify or similar Node frameworksTelegram bot or admin WebUI experienceTypeScript for API contractsSecurity mindset around API keys and server access" (client-provided description)

Additional information:"No description" (admin-provided information)