Senior FullStack Developer - MainApp Web

Taipei, Taiwan
Full time
Hybrid
Compensation is not specified
Role
Full-Stack Engineer
Description

We are looking for a skilled individual to work within a team focused on designing, developing, maintaining, and enhancing software for various venture projects that are closely related to our core businesses. These projects are rapidly developed with lean teams. As a member of our team, you will play a key role in designing various components for scalable applications, spanning from frontend UI to backend infrastructure.

Responsibilities:

  • Collaborate closely with UX/UI designers to translate concepts into pixel-perfect, accessible, and responsive interfaces. Lead the technical implementation of high-performance websites that meet business objectives.
  • Translate mockups into functional and responsive landing pages and websites using HTML, CSS, and JavaScript.
  • Ensure that all designs are technically and functionally feasible across different screen sizes and input methods.
  • Develop clean, reusable, and scalable code leveraging modern frontend frameworks, languages, and best practices.
  • Optimize website architecture, assets, and code to achieve fast loading speeds, minimal footprint, and enhanced user experience.
  • Work collaboratively across functions to create intuitive and high-performing digital experiences that improve customer journeys.
  • Contribute to the development of reusable code libraries and standardize components.
  • Stay updated on emerging technologies through continuous learning and research.
  • Efficiently troubleshoot and resolve bugs while conducting cross-browser compatibility testing.
  • Implement tracking, analytics, and instrumentation to measure key performance indicators and identify optimization opportunities.
  • Clearly communicate complex technical concepts to diverse stakeholder groups.

Requirements:

  • Bachelor's degree in Computer Science, Software Engineering, or a related field.
  • 5-10 years of experience in building responsive, user-friendly web applications and digital experiences using modern frontend frameworks.
  • Proficiency in HTML, CSS, JavaScript, and frameworks like React.JS, Next.JS, and Node.JS.
  • Experience designing and developing high-performance, accessible, and pixel-perfect user interfaces across different devices.
  • Familiarity with server-side preprocessors like Sass/LESS and CSS methodologies.
  • Strong knowledge of web performance best practices such as minification, bundling, and lazy-loading for optimized load times, SEO, and accessibility.
  • Advanced skills in frontend architecture, build tools, and troubleshooting cross-browser compatibility issues.
  • Ability to work collaboratively across teams and translate designs into production-ready code that aligns with business goals.
  • Excellent communication skills to bridge technical and non-technical stakeholders.

Life @ Crypto.com:

  • Encouraged to think creatively and embrace new opportunities in a supportive team environment.
  • Features a proactive and transformational working atmosphere that empowers employees to propose innovative solutions.
  • Offers opportunities for personal and professional growth through skill development.
  • Promotes a cohesive team culture focused on supporting each other.
  • Provides work flexibility with options for flexible hours and hybrid or remote setups.
  • Facilitates career advancement through an internal mobility program.
  • Includes work perks, such as a crypto.com visa card upon joining.

Benefits:

  • Competitive salary and attractive annual leave entitlement, including birthday and work anniversary leave.
  • Opportunities for work flexibility and mobility through internal programs.
  • Work perks such as a crypto.com visa card.

About Crypto.com:

Founded in 2016, Crypto.com serves over 80 million customers as one of the world's fastest-growing global cryptocurrency platforms. With a vision to make cryptocurrency accessible to all, Crypto.com focuses on security, privacy, and compliance. The company is dedicated to driving cryptocurrency adoption through innovation and empowering future generations.

Skills Required
Avatar
Сrypto.com
Company size
Not specified
Location
United States
Description
Not specified

More Full-time Jobs

Show more

Next.js + Web3 Developer Needed to Complete BSC Testnet Waitlist & Staking Platform

Washington D.C., USA
Washington D.C., USA
Full time
Remote
📌 Job Description
 
We are building a production-ready Web3 waitlist and dashboard platform using Next.js 15 (App Router), BSC Testnet, Supabase, and Wagmi v2.
The core architecture, database schema, and feature roadmap are already defined. We are looking for an experienced developer to complete, polish, and harden the project.
 
This is not a prototype — the goal is a fully working, deployable system with clean code, security best practices, and proper Web3 UX.
 
🧩 Project Overview
 
The platform includes:
Wallet-based user registration (BSC Testnet only)
Automatic network detection & switching
Supabase-backed user management
Automatic virtual card generation (Bronze / Silver / Gold)
Token staking system with transaction logging
Referral system with rewards tracking
Dashboard with analytics & history
X (Twitter) OAuth integration
Discord bot with XP & invite tracking
A detailed README and database schema are already prepared.
 
✅ Responsibilities
 
You will be responsible for:
 
Completing and stabilizing the Next.js App Router implementation
Finalizing wallet connection & network enforcement (Chain ID 97)
Ensuring Supabase RLS policies are correct and secure
Implementing or completing:
Staking flows (stake, unstake, claim, emergency withdraw)
Referral tracking & reward logic
Dashboard analytics & transaction history
Finalizing X (Twitter) OAuth integration
Reviewing and improving overall code quality & structure
Fixing bugs, edge cases, and UX issues
Preparing the app for Railway deployment
(Bonus) Improving performance and Web3 UX
 
🛠 Tech Stack (Must-Have Experience)
 
Required:
 
Next.js 14/15 (App Router)
TypeScript
Wagmi v2 + WalletConnect
EVM chains (BSC preferred)
Supabase (Postgres, RLS, triggers, SQL functions)
Tailwind CSS
Web3 transaction handling & logging
 
Nice to Have:
 
Discord bot development (Node.js)
OAuth 2.0 (X / Twitter)
Smart contract interaction (staking contracts)
Framer Motion
shadcn/ui / Radix UI
 
🔒 Security Expectations
 
You must be comfortable with:
Wallet validation & chain enforcement
Preventing self-referrals & abuse
Transaction hash uniqueness checks
Secure handling of OAuth tokens
Supabase RLS & role-based access
 
📦 Deliverables
 
Fully working, deployable application
Clean, documented codebase
Verified Supabase schema & policies
Functional staking & referral systems
Deployment-ready build (Railway)
Basic handover documentation
 
⏳ Timeline
 
Estimated duration: 2–4 months
Start: Immediately
Potential for long-term collaboration
 
💰 Budget
 
Open to fixed-price or hourly
Please include:
 
Your estimated timeline
Relevant Web3 / Next.js projects
Any questions or suggestions to improve the system
 
🧠 How to Apply
 
When applying, please answer:
 
Have you built production Web3 apps with Next.js + Wagmi before?
Have you worked with Supabase RLS & SQL triggers?
Share 1–3 relevant projects (GitHub or live links)
What risks or improvements do you see in this architecture?
Generic proposals will be ignored.
Payment in Crypto
4,000-5,000
Monthly
See details

Требуется менеджер по разработке и дизайну веб-сайтов

Full time
Remote
Выбранный кандидат будет отвечать за:
Формирование, координацию и управление командой
Разработку и сопровождение веб-сайтов
Веб-дизайн и контроль визуальной части проектов
Управление, планирование и организацию цифровых проектов
Требования:
Опыт в разработке веб-сайтов
Практические навыки в области веб-дизайна
Умение работать самостоятельно и принимать решения
Мы предлагаем:
Сотрудничество в перспективном и развивающемся проекте
Возможности профессионального и карьерного роста
Payment in Crypto
2,000-3,000
Monthly
See details

Senior Web3 / Crypto Trading Platform Developer

Full time
Remote
PumaPulse is launching a new standalone domain focused on building professional-grade crypto trading platforms and on-chain trading tools. We are seeking an experienced freelance Web3 developer to help design, build, and evolve a scalable trading product with commercialization potential.ResponsibilitiesDevelop crypto trading tools, bots, or SaaS platformsIntegrate with DEXs and on-chain protocols (e.g., Solana, Ethereum)Implement real-time blockchain data monitoring and trade executionEnsure security, performance, and MEV-aware designCollaborate on product roadmap, strategy, and future featuresRequirementsStrong experience in Web3 and DeFi developmentProven work with crypto trading bots or on-chain trading systemsExperience with at least one major blockchain ecosystemSolid understanding of smart contract interaction and security best practicesAbility to deliver production-ready code and communicate clearlyNice to HaveExperience productizing tools into SaaS platformsBackground in advanced trading strategies or MEVPrior work with VC-backed or early-stage Web3 projectsEngagementFreelance / contract roleCompetitive compensation based on experiencePotential for long-term collaborationApply with relevant Web3 projects, GitHub links, and availability.
Payment in Crypto
50-80
Monthly
See details

Fullstack Developer Needed for Web3 Prediction Market Platform

Brooklyn, USA
Brooklyn, USA
Full time
Remote
Summary
We're looking for an experienced Blockchain / Full-Stack Developer to help build a production-ready MVP for a Web3 prediction marketplace.
We’ve already built a basic UI prototype using vibe coding. The goal now is to turn this prototype into a functional, scalable dApp with clean architecture and solid Web3 fundamentals.
This is not a tutorial or experimental project — We’re looking for someone who has real experience shipping blockchain/web3 products.
What You’ll Do
Review and improve an existing UI prototype
Build smart contract logic for a prediction marketplace MVP
Integrate blockchain functionality with the frontend
Develop backend / API logic as needed
Ensure clean, maintainable, production-ready code
Collaborate on product decisions and MVP scope
Tech Stack (Preferred)
Frontend: Next.js / React
Backend: Node.js
Blockchain: Solidity / Rust
Experience with non-EVM chains is a plus (open to discussion)
What We're Looking For
- Strong experience in Blockchain & Web3 development
- Proven ability to build production-ready dApps
- Proficiency in Next.js, React, and Node.js
- Experience designing and shipping MVPs
- Good communication and ability to work independently
Nice to Have
- Previous work on prediction markets, DeFi, or marketplaces
- Experience taking projects from prototype to launch
- Performance, security, and scalability mindset
How to Apply
Please include:
- A brief summary of your Web3 experience
- Links to previous dApps or blockchain projects
- Your preferred tech stack and availability
If you’re an expert in blockchain and Web3 and enjoy building real products from early prototypes, We’d love to hear from you.
Payment in Crypto
8,000-9,000
Monthly
See details

Looking for a blockchain developer

Whiteman Air Force Base, USA
Whiteman Air Force Base, USA
Full time
Remote
We are looking for a skilled Full-Stack Blockchain Developer to help maintain, improve, and extend the RaiseHive platform. This role involves working across the frontend, backend, and smart contract layers to ensure a stable, secure, and scalable Web3 application.
The ideal candidate has hands-on experience with React, Node.js, Ethereum smart contracts, and real-world Web3 integrations.
Framework: React 18.2 (Vite 3)
Styling: Tailwind CSS 3.4, NextUI
Animations: Framer Motion
Web3: Thirdweb SDK v4, Ethers.js v5
Routing: React Router DOM v6
State Management: React Context API
Libraries: React Markdown, React Image Gallery, Replyke (comments), React Toastify
Runtime: Node.js
Framework: Express.js
Database: MongoDB Atlas (Mongoose ODM)
Email: Nodemailer
Scheduling: Node-cron
Logging: Pino
Network: Ethereum
Smart Contracts: Solidity ^0.8.19
Development Tools: Hardhat
Libraries: OpenZeppelin, Thirdweb Contracts
Wallet Integration: MetaMask
Frontend
Strong proficiency in React (hooks, context, routing)
Experience with Vite or modern build tools
Solid knowledge of Tailwind CSS and responsive design
Experience using component libraries (NextUI, Material UI, etc.)
Backend
Strong experience with Node.js and Express
Proficiency with MongoDB and Mongoose
REST API design and implementation
Environment configuration and deployment awareness
Blockchain & Web3
Hands-on Ethereum development experience
Solidity smart contract development
Experience with Ethers.js / Thirdweb SDK
Understanding of smart contract security and gas optimization
MetaMask wallet integration and transaction handling
General
JavaScript (ES6+)
Git version control
Async programming and debugging skills
Strong problem-solving ability
Payment in Crypto
125
Monthly
See details