CrawlJobs Logo

Web3 Front End Developer

· Job Posted December 07, 2025
Apply Position
Job Link Share

Job Description

The Childhood Cancer Society is dedicated to supporting families facing pediatric cancer, both financially and emotionally. Our mission is to bring hope and joy through various initiatives, including our latest endeavor, a cryptocurrency aimed at enhancing our fundraising efforts and expanding our outreach.

Job Responsibility

  • Design and implement a user-friendly website for the cryptocurrency
  • Develop purchase mechanisms and integrations with cryptocurrency wallets
  • Ensure a seamless user experience for donors and supporters
  • Participate in code reviews and provide constructive feedback
  • Maintain the security, scalability, and reliability of the platform

Requirements

  • Proficiency in front-end technologies such as React, JavaScript, or similar frameworks
  • Experience creating intuitive and user-friendly interfaces
  • Familiarity with blockchain wallet integrations and Web3 frameworks (ethers.js, web3.js)
  • Strong problem-solving skills and attention to detail
  • Excellent communication and teamwork abilities

Nice to have

  • Previous experience in cryptocurrency projects
  • Familiarity with blockchain user experience design principles

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Similar Jobs for

Web3 Front End Developer

8 matching positions

Front-End Engineer

Blockchain.com is connecting the world to the future of finance. As the most tru...
Location
Location
France , Paris
Salary
Salary:
Not provided
blockchain.com Logo
Blockchain
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • At least 3 years of experience working with Front-End technologies, with a focus on React, NextJS and TypeScript
  • Strong software engineering fundamentals knowledge
  • Ability to write secure, maintainable, and testable Front-End code
  • Experience with blockchain technologies, cryptocurrencies, and Web3 development
  • Ability to independently manage the full lifecycle of tasks, and take ownership of the quality of your work
  • Excellent communication skills and collaborate effectively with team members across disciplines
  • Hands-on experience with Front-End architectures and automated testing is a plus
Job Responsibility
Job Responsibility
  • Be a part of Web Front-End team which oversees all Web UIs for consumer side of the business such as Wallet, DEX and crypto on-ramp
  • Maintain and continuously improve existing applications serving millions of users, as well as develop new ones for cutting-edge crypto solutions
  • Integrate both Web2 and Web3 technologies and APIs to enhance wallet and decentralized exchange (DEX) functionalities
  • Collaborate closely with designers, Back-End engineers, and business stakeholders to deliver a best-in-class user experience
  • Proactively collaborate with team members, sharing knowledge and ensuring efficient task distribution
  • Advocate for best practices, code quality, and test coverage, while driving technical discussions within the team
What we offer
What we offer
  • Unlimited vacation policy
  • Unlimited books policy
  • Apple equipment
  • Learning and development opportunities in other areas than AML in the future
  • Full-time salary based on experience and meaningful equity in an industry-leading company
  • Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year
  • Fulltime
Read More
Arrow Right

Senior Full Stack Engineer

Our client crafts world-class original instant games for online casinos, making ...
Location
Location
Australia
Salary
Salary:
Not provided
vankaizen.com Logo
Van Kaizen
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Hands-on, senior full stack development with 5+ years' IT experience
  • you write clean, well-documented code and own features from concept to production
  • Proficient in JavaScript and TypeScript, with experience deploying to cloud platforms such as GCP
  • you care about performance, security, and reliability
  • Collaborate with product, design, and QA to define requirements, write tests, and ship features with clear acceptance criteria
Job Responsibility
Job Responsibility
  • design, build, and maintain scalable web applications
  • ship features end-to-end
  • partner with product, design, and QA to deliver polished experiences for players and operators
  • work across front-end and back-end layers
  • guide peers
  • help shape the architecture for a reliable, high-performance product
What we offer
What we offer
  • Fully remote arrangement in Australia or New Zealand
  • Supportive, inclusive culture focused on growth, learning, and impact
Read More
Arrow Right

Senior Full-Stack Engineer

Our client is an emerging tech company innovating in the digital asset and Web3 ...
Location
Location
Salary
Salary:
120000.00 USD / Year
g2i.co Logo
G2i Inc.
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of professional software development experience
  • 3+ years working in Web3 or blockchain-related projects
  • Strong expertise in React, TypeScript, and Node.js
  • Experience building and deploying cloud-based systems (AWS, GCP, or similar)
  • Understanding of smart contract integrations and blockchain fundamentals
  • Excellent communication skills in English
  • Must be based in LATAM
Job Responsibility
Job Responsibility
  • Design, build, and maintain scalable full-stack applications using React, TypeScript, and Node.js
  • Contribute to architecture decisions for front-end and back-end systems
  • Integrate with Web3 technologies (smart contracts, wallets, blockchain APIs, etc.)
  • Ensure performance, security, and reliability across distributed systems
  • Collaborate cross-functionally with design, product, and leadership
  • Participate in code reviews, technical discussions, and mentorship of junior engineers
What we offer
What we offer
  • 100% remote work with flexible hours
  • Opportunity to work on cutting-edge blockchain technology
  • Collaborative, international, and innovative culture
  • Fulltime
Read More
Arrow Right

Senior Crypto Developer

We are seeking a talented and driven Senior Crypto Developer to join our dynamic...
Location
Location
Salary
Salary:
Not provided
gamdom.com Logo
gamdom
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of backend development experience, including significant work with Node.js and TypeScript
  • Strong understanding of blockchain fundamentals, especially UTXO vs. account-based models
  • Hands-on experience with Ethereum, Bitcoin, and L2s (e.g., Arbitrum, Optimism, Polygon)
  • Familiarity with Web3 libraries such as ethers.js, web3.js, and experience interacting with RPC APIs
  • Deep understanding of secure wallet management practices and MPC technology
  • Proficiency in front-end development using React and Web3 provider integrations
  • Experience in designing high-availability systems and real-time transaction infrastructure
  • Strong emphasis on security, performance, and scalability
  • Excellent documentation and communication skills
Job Responsibility
Job Responsibility
  • Own backend micro-services in Node.js/TypeScript that interface with multiple blockchains, following clean-architecture and test-driven development principles
  • Run and optimize bitcoin-core (BTC/LTC) nodes, manage UTXO sets, fee estimation, mempool monitoring, and wallet RPCs for high-volume deposit and withdrawal flows
  • Build and maintain Ethereum transaction pipelines using ethers.js - handle ERC-20/ERC-721 token transfers, reorgs, transaction signing/broadcasting, and nonce management
  • Integrate additional L1/L2 networks by abstracting blockchain-specific logic behind a unified service layer, enabling rapid support for new tokens and chains
  • Leverage Fireblocks or similar MPC/custodial APIs to manage secure wallet operations, policy enforcement, and multi-signature approval flows
  • Develop and maintain frontend Web3 wallet integrations (e.g., MetaMask, WalletConnect, Ledger) using TypeScript/React, delivering seamless UX and real-time transaction feedback
  • Build scalable deposit & withdrawal infrastructure, including queueing systems, idempotent webhooks, reconciliations, wallet sweeps, address management, and fee optimization
  • Embed security and compliance features, KYT screening, whitelisting, secrets management, and rate-limiting into application code and CI/CD pipelines
  • Monitor blockchain health and system performance establish SLAs, create alerting systems, implement incident response plans, and lead post-mortems
  • Document APIs, architecture decisions, and operational runbooks
What we offer
What we offer
  • A dynamic and supportive work environment
  • Opportunities for professional growth and development in a rapidly evolving industry
  • Competitive salary and performance-based incentives
  • The chance to work with a passionate team in the forefront of blockchain innovation
Read More
Arrow Right

Sr. Full-Stack Engineer, Product

We’re looking for an experienced product-focused full-stack engineer to join our...
Location
Location
United States
Salary
Salary:
175000.00 - 215000.00 USD / Year
zora.co Logo
Zora
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4+ years of experience as a software engineer working on user-facing or product-centric systems
  • Strong experience building both front-end applications at scale (React, React Native, Next.js, TypeScript) and back-end systems & APIs (Node/TypeScript, GraphQL, or similar)
  • Ability to move fluidly across the stack: Front-end (React/React Native), Back-end (TypeScript/Node, GraphQL, Python), Smart contracts or on-chain logic (Solidity) — or a willingness to learn
  • A strong product sense and a user-first mindset
  • Comfort owning features from ideation through implementation and production support
  • Familiarity with or desire to learn crypto/web3 concepts
  • Desire to stay current with modern software best practices across full-stack development
  • MUST be located in a US Time Zone
Job Responsibility
Job Responsibility
  • Build and continuously improve trading-related features across web, mobile, backend services, and on-chain components
  • Design, build, and maintain APIs, services, and user interfaces that support high-scale trading and creation experiences
  • Own projects end-to-end—from system design to implementation, testing, rollout, and post-launch iteration
  • Work closely with PMs and Designers to shape product direction and ensure user needs are kept at the center
  • Participate in code reviews, RFCs, technical design discussions, and architecture planning
  • Collaborate with engineers across the stack, contributing wherever the product needs you most
  • Participate in on-call rotation and help maintain reliability of core trading surfaces
  • Communicate clearly with cross-functional stakeholders on status, risks, and milestones
What we offer
What we offer
  • Remote-First Culture: Work from anywhere in the world!
  • Competitive Compensation: Including salary, pre-IPO stock options, token compensation, and additional financial incentives
  • Comprehensive Benefits: Robust healthcare options, including fully covered medical, dental, and vision for employees
  • Retirement Contributions: Up to 4% employer match on your 401(k) contributions
  • Health & Wellness: Free memberships to One Medical, Teladoc, and Health Advocate
  • Unlimited Time Off: Flexible vacation policies, company holidays, and recharge weeks to prioritize wellness
  • Home Office Reimbursement: To cover home office items, monthly home internet, and monthly cell phone (if applicable)
  • Ease of Life Reimbursement: To cover everything from an Uber home in the rain, childcare, or meal delivery
  • Career Development: Access to mentorship, training, and opportunities to grow your career
  • Inclusive Environment: A culture dedicated to diversity, equity, inclusion, and belonging
  • Fulltime
Read More
Arrow Right
New

IT Training Lead

The IT Training Lead will drive technology learning and user adoption across the...
Location
Location
United States , Delray Beach
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Experience in IT training, instructional design, technical enablement, or learning and development
  • Strong knowledge of Microsoft 365
  • Excellent communication, facilitation, and content development skills
  • Ability to translate technical concepts into practical, user-friendly training.
Job Responsibility
Job Responsibility
  • Design, develop, and deliver IT training programs in instructor-led, virtual, and self-paced formats
  • Take lead in the Microsoft Copilot and AI training strategy, including onboarding, advanced use cases, responsible AI usage, and ongoing enablement
  • Partner with IT leadership to support new technology rollouts, system upgrades, and digital transformation initiatives
  • Create and maintain training content, including videos, guides, tutorials, and job aids
  • Identify skill gaps and develop targeted learning solutions to improve adoption and productivity
  • Gather feedback and measure training effectiveness to continuously improve programs.
Read More
Arrow Right
New

K Kitchen Representative

The position includes, but is not limited to, the following essential job duties...
Location
Location
United States , New Albany
Salary
Salary:
Not provided
https://www.circlek.com Logo
Circle K
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Excellent communication skills
  • Team player who can work well with others or independently
  • Acts with integrity
  • keeps commitments
  • Contagious positive attitude
  • Focuses on achieving results while having fun
  • Frequently bend, twist at waist, kneel, squat, stand, and walk
  • Occasionally climb and descend ladders
  • Tolerate extreme cold and hot temperatures and work in and around fryers, ovens, grills, coolers, freezers, sharp objects, and loud noises
  • Reach, grasp, and manipulate objects with hands for entire shift, including reaching for objects overhead
Job Responsibility
Job Responsibility
  • Provides excellent guest service in a fast and friendly manner
  • Maintains a clean restaurant environment by cleaning and performing general housekeeping duties
  • Prepares and serves food items in accordance with all Brand, Company, and health department regulations
  • Ensures product quality, food safety, and operational standards are met
  • Keeps accurate cash, sales, and inventory control records
  • Follows all government laws and safety codes
  • Completes reports on all incidents following our 5-minute rule policy
  • Lives our Company values: One Team, Do the Right Thing, Takes Ownership, Play to Win
What we offer
What we offer
  • Medical, Dental, Vision, Term Life and AD&D plans
  • Flexible spending and health savings accounts (FT)
  • Vacation paid time off
  • Company holidays paid at time and a half
  • Matching 401(k)
  • Tuition Reimbursement
  • Stock Purchase Plan
  • Employee Discount Program
  • Discount Meal Benefit
  • Wellness Plan
Read More
Arrow Right
New

K Kitchen Representative

Location
Location
United States , Decatur
Salary
Salary:
Not provided
https://www.circlek.com Logo
Circle K
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Excellent communication skills
  • Team player who can work well with others or independently
  • Acts with integrity
  • keeps commitments
  • Contagious positive attitude
  • Focuses on achieving results while having fun
  • Frequently bend, twist at waist, kneel, squat, stand, and walk
  • Occasionally climb and descend ladders
  • Tolerate extreme cold and hot temperatures and work in and around fryers, ovens, grills, coolers, freezers, sharp objects, and loud noises
  • Reach, grasp, and manipulate objects with hands for entire shift, including reaching for objects overhead
Job Responsibility
Job Responsibility
  • Provides excellent guest service in a fast and friendly manner
  • Maintains a clean restaurant environment by cleaning and performing general housekeeping duties
  • Prepares and serves food items in accordance with all Brand, Company, and health department regulations
  • Ensures product quality, food safety, and operational standards are met
  • Keeps accurate cash, sales, and inventory control records
  • Follows all government laws and safety codes
  • Completes reports on all incidents following our 5-minute rule policy
  • Lives our Company values: One Team, Do the Right Thing, Takes Ownership, Play to Win
What we offer
What we offer
  • Medical, Dental, Vision, Term Life and AD&D plans
  • Flexible spending and health savings accounts (FT)
  • Vacation paid time off
  • Company holidays paid at time and a half
  • Matching 401(k)
  • Tuition Reimbursement
  • Stock Purchase Plan
  • Employee Discount Program
  • Discount Meal Benefit
  • Wellness Plan
Read More
Arrow Right