Lead / Senior Software Developer - Mainapp Platform Team

Hong Kong
Full time
Hybrid
Compensation is not specified
Role
Full-Stack Engineer
Description

We are seeking a dedicated individual to join our team responsible for designing, developing, maintaining, and enhancing software for a range of projects closely related to our core businesses. These projects are executed swiftly with a lean team. As a valued team member, you will play an active role in designing various components of scalable applications, encompassing frontend UI to backend infrastructure.

You will be an integral part of the Main App team, contributing to the creation of a system capable of catering to 100 million active users worldwide. Lead / Senior Software Developers have the autonomy to devise and implement both technical and non-technical solutions to cater to internal users and external customers efficiently.

Role & Responsibilities:

  • Engage in project development tasks within the Platform Team.
  • Take full ownership of the product lifecycle from planning to delivery.
  • Collaborate closely with diverse cross-functional teams including Backend, Frontend, and QA developers.
  • Propel continuous enhancement in development processes, tools, and testing methodologies.
  • Foster innovation in workflow automation tools and applications for team productivity boosts.
  • Assess existing workflows continually and recommend enhancements.
  • Pursue optimization of processes, code quality, and team effectiveness rather than settling for mediocrity.
  • Proactively identify and offer superior solutions to address bottlenecks.
  • Provide support for existing applications, bug fixing, and addressing customer issues promptly.
  • Root cause analysis of application errors and escalate critical concerns to designated internal engineers.
  • Engage in the enhancement of architecture, platform, tools, and DevOps practices within the team's codebases.

Requirements:

  • possess 2-8 years of experience in server-side programming languages.
  • exhibit proficiency with Ruby on Rails or a similar web MVC framework for over 2 years.
  • demonstrate effective communication skills when engaging with both technical and non-technical colleagues.
  • exude a willingness to actively participate in the open-source community for the collective benefit.
  • showcase the ability to swiftly adopt new technologies, a strong capability to learn, and a 'get things done' attitude.
  • maintain humility to embrace superior ideas and pursue continuous improvement.
  • work autonomously with accountability, even under pressure.
  • showcase an eagerness to learn and evolve continuously.
  • willingness to accept constructive criticism and provide feedback honourably to others.
  • demonstrate an eagerness to drive personal and team improvements.

Advantage:

  • knowledge of scalability, security, and performance management.
  • expertise in domain-driven microservices architecture backend development.
  • familiarity with zero downtime CI/CD practices and development principles.
  • understanding of DevOps processes and tools.
  • proficiency in AWS products, resources, and resilience configuration.
  • understanding of system networking concepts.
  • familiarity with third-party monitoring platforms such as Datadog and AWS Cloudwatch.
  • interest or knowledge in Go programming language.

Life @ Crypto.com:

  • Encouraged to think expansively and explore new opportunities within an accomplished and supportive team.
  • Benefit from a transformational and proactive work environment, encouraging innovative problem-solving.
  • Opportunities for personal and professional growth, promoting skill-set development.
  • Fostered work culture that emphasizes support and cooperation among colleagues.
  • Pursue our common goal of promoting cryptocurrency accessibility with a cohesive team effort.
  • Enjoy flexible work hours and remote work options.
  • Access to career advancement opportunities through the internal mobility program.
  • Upon joining, receive work perks, like the crypto.com Visa card.

Benefits:

  • Competitive salary.
  • Generous annual leave allocation including birthday and work anniversary holidays.
  • Flexibility in working hours and options for hybrid or remote setups.
  • Internal mobility program allowing for diversified career pathways.
  • Work perks include the crypto.com Visa card upon joining.

About Crypto.com:

Founded in 2016, Crypto.com has benefited more than 80 million customers and emerged as the fastest-growing global cryptocurrency platform. With a vision to promote Cryptocurrency in Every Wallet™, Crypto.com is dedicated to advancing cryptocurrency adoption through innovation, fostering a fairer digital ecosystem. The company prioritizes security, privacy, and compliance, affirming its commitment to empowering future digital creators, entrepreneurs, and builders.

Crypto.com is an equal opportunities employer embracing diversity and inclusion, encouraging candidates from various backgrounds to join the team. All personal data provided will be used solely for recruitment purposes. Shortlisted candidates will be contacted accordingly.

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

More Full-time Jobs

Show more

Remote Data Entry & Internet Research Assistant (Beginner Friendly)

Remote, USA
Remote, USA
Part time
Remote
We are an international IT and digital support company looking for new remote assistants.
 
The job is very simple and beginner friendly. No special experience is required. Training and instructions will be provided.
 
Your tasks may include:
 
• Checking basic online information
• Testing simple crypto or digital tools
• Completing small verification tasks
• Following step-by-step instructions
• Helping our team with easy online activities
 
Most tasks take 5–20 minutes to complete.
 
Payment starts from $8–$15 per task. More tasks and higher payments are available for active workers.
 
Requirements:
 
• Basic English understanding
• Smartphone or computer
• Internet connection
• Responsibility and ability to follow instructions
 
This is a flexible remote opportunity. You can work from anywhere and choose your working hours.
 
Long-term cooperation is available for reliable workers.
Payment in Crypto
208-833
Monthly
See details

Web3 + Supabase Developer Needed to Complete BSC Testnet Waitlist & Staking Platform

Washington, USA
Washington, USA
Part 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
4,500
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