Web3 Front End Developer Job at Childhood Cancer Society

Sr. Front-End Engineer (React Native), Product

We’re looking for an experienced Front-End Engineer (React Native focus) to join...

Location

United States

Salary:

160000.00 - 190000.00 USD / Year

Zora

Expiration Date

Until further notice

Requirements

4+ years of professional experience as a Software Engineer
Strong technical background building consumer- or user-facing applications at scale using React/React Native
Comfortable working through the product lifecycle, partnering closely with Designers, Engineers, and Product Managers
Strong product sense and keep user needs front and center when building and improving features
Familiarity with crypto features and concepts
A desire to keep up with modern best practices in software development and Web3
U.S. time zone

Job Responsibility

Work closely with Product Managers, Designers, and Engineers across the stack to build and continuously improve trading-related features
Develop and maintain performant, scalable user interfaces across mobile and web
Take ownership of projects end-to-end, working independently while seeking guidance from senior peers and managers as needed
Communicate status, updates, blockers, etc., to cross-functional stakeholders
Respond to incidents as part of an on-call rotation
Participate in RFC and code review

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

Senior Front-end Engineer

We're making the world of digital assets accessible and secure for everyone. Joi...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Engineer profile with at least 5 years of experience in software development
Good knowledge of UI/UX practices in software development
Proficient with JavaScript and TypeScript
Strong experience in React.js development, tools and libraries
Good knowledge of testing strategies

Job Responsibility

Own from a technical standpoint the desktop and mobile development of Ledger Live Applications
Collaborate with our devs, QA, designers, and product within Ledger Live teams
Take initiative and offer technical solutions
Develop features using best practices from unit to e2e testing
Participate in code reviews
Be responsible for the quality of Ledger’s UI/UX framework
Mentor and promote tech growth within the team, helping to set high standards for the team
Work 100% on Open Source projects all gathered in our monorepo: ledger-live
Share knowledge within Ledger and beyond

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets, including Apple products
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products

Fulltime

Sr. Front-End Engineer, Product

We’re looking for an experienced product-focused front-end engineer to join our ...

Location

Salary:

160000.00 - 190000.00 USD / Year

Zora

Expiration Date

Until further notice

Requirements

4+ years of professional experience as a Software Engineer
Strong technical background building consumer- or user-facing applications at scale using React/React Native
Experience moving across the stack when needed (Python and Solidity)
Comfortable working through the product lifecycle, partnering closely with Designers, Engineers, and Product Managers
Strong product sense and keep user needs front and center when building and improving features
Familiarity with crypto features and concepts
A desire to keep up with modern best practices in software development and Web3
EU or U.S. (EST) time zone

Job Responsibility

Work closely with Product Managers, Designers, and Engineers across the stack to build and continuously improve trading-related features
Develop and maintain performant, scalable user interfaces across mobile and web
Take ownership of projects end-to-end, working independently while seeking guidance from senior peers and managers as needed
Communicate status, updates, blockers, etc., to cross-functional stakeholders
Respond to incidents as part of an on-call rotation
Participate in RFC and code review

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

Web3 Full Stack Developer

Token Metrics is looking for a highly skilled Crypto native Full-Stack Engineer ...

Location

United States , Austin

Salary:

Not provided

Token Metrics

Expiration Date

Until further notice

Requirements

Degree in Computer Science, BS in Computer Science or equivalent experience
Strong organizational and project management skills
Proficiency with fundamental front end languages such as HTML, CSS and JavaScript
Familiarity with JavaScript frameworks such as React
Proficiency with server side languages such Node Js
Familiarity with database technology such as MySQL, Postgresql and MongoDB
Have good experience and understanding of solidity language
LLM experience
Excellent verbal communication skills
Good problem solving skills

Job Responsibility

Developing front end website architecture
Designing user interactions on web pages
Developing back end website applications
Creating servers and databases for functionality
Ensuring cross-platform optimization for mobile phones
Ensuring responsiveness of applications
Working alongside graphic designers for web design features
Seeing through a project from conception to finished product
Designing and developing APIs
Meeting both technical and consumer needs

Fulltime

Web3 Full Stack Developer Intern

Token Metrics is looking for a highly skilled Crypto native Full-Stack Engineer ...

Location

United States , Austin

Salary:

Not provided

Token Metrics

Expiration Date

Until further notice

Requirements

Degree in Computer Science, BS in Computer Science or equivalent experience
Strong organizational and project management skills
Proficiency with fundamental front end languages such as HTML, CSS and JavaScript
Familiarity with JavaScript frameworks such as React
Proficiency with server side languages such Node Js
Familiarity with database technology such as MySQL, Postgresql and MongoDB
Have good experience and understanding of solidity language
LLM experience
Excellent verbal communication skills
Good problem solving skills

Job Responsibility

Developing front end website architecture
Designing user interactions on web pages
Developing back end website applications
Creating servers and databases for functionality
Ensuring cross-platform optimization for mobile phones
Ensuring responsiveness of applications
Working alongside graphic designers for web design features
Seeing through a project from conception to finished product
Designing and developing APIs
Meeting both technical and consumer needs

Fulltime

Senior Crypto Developer

We are seeking a talented and driven Senior Crypto Developer to join our dynamic...

Location

Salary:

Not provided

gamdom

Expiration Date

Until further notice

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

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

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

Crypto Senior Full Stack Developer

Token Metrics is looking for a highly skilled Crypto native Senior Full-Stack En...

Location

Vietnam , Hanoi

Salary:

Not provided

Token Metrics

Expiration Date

Until further notice

Requirements

Degree in Computer Science, BS in Computer Science and an MS/PhD in Data Science or ML
Strong organizational and project management skills
Proficiency with fundamental front end languages such as HTML, CSS and JavaScript
Familiarity with JavaScript frameworks such as Angular JS, React
Proficiency with server side languages such as Python, Node Js, .Net
Familiarity with database technology such as MySQL, Oracle and MongoDB
LLM experience
Excellent verbal communication skills
Good problem solving skills
Attention to detail

Job Responsibility

Developing front end website architecture
Designing user interactions on web pages
Developing back end website applications
Creating servers and databases for functionality
Ensuring cross-platform optimization for mobile phones
Ensuring responsiveness of applications
Working alongside graphic designers for web design features
Seeing through a project from conception to finished product
Designing and developing APIs
Meeting both technical and consumer needs

Fulltime

Front-End Engineer

Blockchain.com is connecting the world to the future of finance. As the most tru...

Location

France , Paris

Salary:

Not provided

Blockchain

Expiration Date

Until further notice

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

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

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

Web3 Front End Developer

Childhood Cancer Society

Location:

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 07, 2025

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