Full-Stack Engineer (AI - 09142026 - FTFSE)

Position

Full-Stack Engineer

Number of hours

40 hours per week

Schedule

8:00 AM – 5:00 PM UK Time

Key Responsibilities

• Design, develop, and maintain a scalable multi-chain crypto analytics platform using modern full-stack technologies.
• Build and enhance responsive frontend applications using Next.js, React, and Tailwind CSS, including dashboards, token analytics pages, watchlists, and user-facing interfaces.
• Develop robust backend services using Node.js (Express/Fastify) to support API integrations, data processing, authentication, caching, and business logic.
• Integrate and normalize data from multiple blockchain and third-party providers, including token price feeds, liquidity data, volume tracking, trending tokens, and security analysis APIs.
• Build secure API gateway layers that protect third-party API credentials while managing rate limits, caching strategies, and provider reliability.
• Develop database structures and optimize queries using PostgreSQL for users, token metadata, watchlists, chat history, and cached analytics data.
• Implement background processing systems using tools such as Redis and BullMQ for scheduled jobs, token discovery, risk analysis updates, and data refresh workflows.
• Develop real-time functionality using WebSockets / Socket.io, including live price updates and future token-based chat features.
• Contribute to the implementation of blockchain safety features, including:
• Honeypot detection integrations
• Contract risk analysis
• Token safety scoring workflows
• Rug-risk data processing
• Create reliable systems with proper handling of API failures, rate limits, incomplete data, and service outages.
• Implement automated testing strategies using tools such as Jest/Vitest and Playwright to ensure application reliability and accuracy.
• Collaborate closely with the founder and existing engineering team to translate product requirements, technical decisions, and architecture plans into production-ready features.
• Participate in code reviews, technical discussions, system design improvements, and deployment processes.
• Support continuous improvements in scalability, security, performance, and user experience as the platform grows.

Qualifications

Required Qualifications

• Proven experience as a Full-Stack Engineer, Full-Stack Developer, Software Engineer, or similar role building production-level web applications.
• Strong proficiency in:
• JavaScript / TypeScript
• React.js
• Next.js
• Node.js
• Tailwind CSS
• Strong backend development experience including:
• REST API development
• API integrations
• Authentication and authorization
• Backend architecture and service design
• Hands-on experience with relational databases, particularly PostgreSQL, including database design, optimization, and data modeling.
• Experience building applications that consume and process external APIs, including handling:
• Rate limits
• Data normalization
• API failures
• Caching strategies
• Experience developing real-time applications using:
• WebSockets
• Socket.io
• Event-driven architectures
• Familiarity with cloud deployment environments such as:
• AWS
• Render
• Fly.io
• Vercel
• Container-based hosting environments
• Experience with caching and queue systems such as:
• Redis
• BullMQ
• Strong understanding of software engineering best practices, including:
• Clean code principles
• Version control (Git)
• Testing methodologies
• Code reviews
• Secure development practices

Preferred Qualifications

• Previous experience working on Web3, blockchain, cryptocurrency, DeFi, or financial analytics platforms.
• Experience integrating blockchain-related APIs or data providers such as:
• DEX analytics APIs
• Token security APIs
• Blockchain explorers
• Wallet analytics providers
• Familiarity with:
• Ethereum Virtual Machine (EVM) ecosystems
• Solana ecosystem
• Smart contract concepts
• Token mechanics
• Liquidity pools and decentralized exchanges (DEXs)
• Experience building data-heavy dashboards, analytics platforms, trading tools, or monitoring systems.
• Experience implementing risk scoring, fraud detection, security analysis, or financial data models.
• Understanding of high-availability systems where data accuracy and reliability are critical.
• Ability to work independently, make technical decisions, and collaborate directly with founders and senior engineers.