Hire Wallets (Integration & Transaction Signing) Developer

Crypto Wallets
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Crypto Wallets
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Node.js 8yr.
Web3.js 4yr.
Solana 2yr.
EthereumJS 2yr.
React
JavaScript 8yr.
TypeScript 8yr.
NestJS 7yr.
Github Actions 5yr.
RabbitMQ 3yr.
CSS
HTML
SCSS
Styled components
i18next
Mongoose
mui
Pm2
Redux-Saga
Redux Thunk
Redux-toolkit
Styled components
AWS ElasticSearch
Sequelize
Typeorm
AWS AppSync
AWS CloudWatch
AWS Cognito
AWS EC2
AWS ECR
AWS Elastic Kubernetes Service (EKS)
AWS ElasticSearch
AWS IAM (Amazon Identity and Access Management)
AWS Route 53
AWS S3
AWS SDK
AWS VPC
GCE
GCP BigQuery
BitBucket
Git
Chai
Phantom
Cron
Docker Compose
GCE
Terraform
Figma
GitLab CI
Jenkins
Kubernetes
Jest
Mocha
Nginx
Prometheus
RESTful API
Swagger
WebSockets
Artifacts
GKE XMPP
IAM\RBAC
Openai
RDS
...

- Full-Stack Engineer with over 8 years of experience specializing in Web2 and Web3 technologies, blockchain development, and Full-Stack architecture. - Has 4 years of experience working with web3, implementing blockchain solutions using Ethereum, Solana, and smart contracts. - Proven expertise in tokenization, NFT integration, and cryptocurrency transactions for real estate, voluntary donation, and other industries. - Expertise in Node JS, Nest JS, and RESTful APIs, with proficiency in React JS for frontend development. - Strong experience with databases like PostgreSQL, Redis, MongoDB, and DynamoDB. - Well-versed in cloud services, including AWS and GCP, and experienced in container orchestration with Kubernetes. - Proficient in CI/CD using Jenkins, GitHub Actions, Bitbucket Pipelines, and Terraform. - Familiar with Nginx for web server management and ensuring smooth application deployments.

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Seniority Senior (5-10 years)
Location Warsaw, Poland
PHP 5yr.
JavaScript 5yr.
TypeScript 1yr.
Solidity
Laravel 5yr.
Bootstrap 4 4yr.
Nginx 4yr.
Flask-restful 4yr.
Ajax 3yr.
jQuery 3yr.
GitLab CI 3yr.
Tailwind CSS 1yr.
Web3.js 1yr.
MariaDB 1yr.
BitBucket 1yr.
Github Actions 1yr.
Phantom 1yr.
SASS
PHPUnit
React
Vanilla JS
Vue.js
MySQL
Redis
AWS EC2
AWS S3
AWS SES (Amazon Simple Email Service)
Git
GitLab
Brownie
Hardhat
OpenZeppelin
Docker
Docker Compose
GRPC
PHPUnit
Selenium
RESTful API
SOLID
Git Lab
Protobuf
Third Party Integrations
...

-Software Engineer with 5 years of professional experience, working across eCommerce & retail, Marketplace, Healthcare, Entertainment, Education, and Blockchain, Game domains. -Proficiency in PHP, JavaScript, TypeScript, React - Knowledge of Vanilla JS, Native PHP, PHP-Selenium - Experience working with Web3 marketplaces, nodes, on-chain, and off-chain transactions - Knowledge of Web3, understanding of Abi, Smart Contracts; Tampermonkey, Greasyfork - Knowledge Css3, Bootstrap 4; RPC; GitHub; MySQL - Has a successful track record of developing applications from scratch and optimizing existing systems, evidenced by projects such as a Learning Platform, Event Manager, and a Website for a Coin Game - Computer Science and Software Engineering Foundation

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Seniority Middle (3-5 years)
Location Poland
JavaScript 5yr.
Web3.js
React
WebRTC
Ant Design 5yr.
Java
TypeScript
Ajax
Bootstrap
Bootstrap 4
CSS
HTML
Material UI
SCSS
Socket.io
Storybook
Styled components
Tailwind CSS
Ethers.js
Express
GatsbyJS
i18next
Mobx
NestJS
Next.js
Node.js
React Hooks
React Query
Redux
Redux Thunk
Redux-toolkit
Styled components
MongoDB
PostgreSQL
Blockchain
Agile
Clean Architecture
Kanban
Scrum
Cypress
Jasmine
Jest
Mocha
React-testing-library
Unit Testing
dApps
Ethers.js
Hardhat
Solana
Docker
Problem Solving
WebSockets
Chakra UI
CSS3
Ext JS
Openai
React-hook-form
seo
WAGMI
Zustand
...

- 5+ years of experience as a Front-end JavaScript Developer; - 5+ years of experience in React.js; - Proficient in Solana Blockchain operations, including managing deposits, executing transfers, creating Phantom wallets, and handling contract call interactions; - Strong abilities working with Web3; - Deep experience in Next.js technology; - Experience with WebRTC, Soket.io; - Good knowledge of Tailwind CSS, Bootstrap, and Chakra UI; - Experience working with Redux, and Docker; - Familiar with Node.js; - Proficiency in testing frameworks like Jest and Cypress; - E-commerce, web, and mobile applications, including learning platforms, chatbots, dApps, and cryptocurrency wallet extensions.

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Seniority Senior (5-10 years)
Location Castel San Giovanni, Italy
Solidity
Ethers.js
Next.js
Web3.js
BEP-20
BEP-721
BNB
dApps
DeFi
ERC-1155
ERC-20
ERC-721
Ethers.js
ETH (Ethereum blockchain)
Ganache CLI
Hardhat
OpenZeppelin
Truffle
CLI
Embark
MythX
NFT
Slither
...

- Experience working with Solidity; - Good understanding of Blockchain technology; - 3+ years of experience in Smart Contract development; - Deep skills with Hardhat, and Truffle; - Experience working with ethers.js and Web3.js; - Good knowledge of Ethereum, and BNB Chain; - Experience working on dApps, DeFi, and NFT projects; - In-depth abilities in creating and deploying ERC20, ERC721, ERC1155, BEP20, and BEP721 tokens; - Intermediate English.

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Seniority Middle (3-5 years)
Location Kazakhstan
Rust
Solidity
JavaScript
PHP
Python
TypeScript
CSS
HTML
SCSS
Styled components
Ethers.js
Node.js
React
React-Saga
React Thunk
Redux
Styled components
Vue.js
Web3.js
Webpack
MongoDB
AWS
Anchor
BEP-20
BEP-721
Binance
DeFi
ERC-1155
ERC-20
ERC-721
Ethers.js
ETH (Ethereum blockchain)
Fantom
IPFS (InterPlanetary File System)
MetaMask
NFT
NFT marketplace
OptyFi Protocol
Polygon
Quickswap
Smart Contract
Solana
Sushiswap
Terra
Uniswap
Xdai
Docker
GraphQL
...

-As a senior Programmer and Blockchain developer, with over 6 years of development, I am an expert in NFT Website, NFT Art Generation, and NFT Marketplace, Solidity, Web3, EVM based network chains, Custom smart contracts, ERC20/721, ERC1155, NFTs, IDO's, Bridges Block explorers, UI Web3 Dapps Integration, IPFS. - Smart Contract Development (Solidity/ Rust/ Anchor Framework/ Cosmwasm) - Cardano smart contract by utilizing CosmWasm smart contract by utilizing Rust CosmWasm. - Solanasmartcontractimprovement(Unittest,Solana-program-library,Solana-web3,Raydiumtradeandorca)by utilizing Rust and Anchor system. - Polkadot Relay Chain using Substrate in Rust programming. - Smart contract advancement in networks (Ethereum, BSC, Matic/Polygon) by utilizing Solidity. - Uniswap V2, V3, Curve (Yearn, Convex), Sushiswap, Quickswap, etc. - Written smart contracts for ERC20, ERC223, ERC721, ERC1155, ICOs, airdrop, Vesting, MultiSig, Wallet, etc - DeFi, Dex protocols - Front-end development with Smart contract integration by utilizing Web3, truffle. React (Redux/Thunk/Saga), Typescript, Node js. - NFT minting website andNFT marketplace development(Create a listing by admin, flat&Crypto payment,Bundle Sale/ Bulk Transfers, Drop)

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Seniority Middle (3-5 years)
Location Buenos Aires, Argentina
Rust 2yr.
Solidity
C++
Go
JavaScript
PHP
TypeScript
Angular
Ethers.js
NestJS
Node.js
React
Vue.js
Web3.js
Laravel
MongoDB
MySQL
SQL
Anchor
Binance
BSC
DAO
Dapp
DeFi
DEX
ERC-1155
ERC-20
ERC-721
Ethers.js
ETH (Ethereum blockchain)
EVM
Hardhat
HTX ECO Chain (Heco)
Hyperledger
MetaMask
NFT
NFT marketplace
Phantom
Polkadot
Polygon
Smart Contract
Solana
Tezos
Torus
Tron
Truffle
Web3
Principle
RESTful API
AMM
SSV network
...

- Engineer who has 6+ years of experience with many programming languages, frameworks, and platforms; - 2+ years experience with developing smart contracts on Rust; - Solid skills with Solidity; - Working experience in building an NFT marketplace platform on Polygon and Binance Smart Chain using ERC-721 and ERC-1155; - Experience with ether.js, web3.js, and JS/TS frameworks; - Familiar with blockchain Ethereum, Binance, Tron, Solana, Polkadot, Tezos, Polygon, Huobi ECO chain, etc; - Deep knowledge in implemented Metamask, Torus, and other wallets to increase user experiences with the web apps; - Advanced English; - Available ASAP.

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Seniority Senior (5-10 years)
Location Singapore
PHP 9yr.
JavaScript 9yr.
MySQL 9yr.
Solidity
Git 9yr.
SOLID 2yr.
Laravel 1yr.
C/C++/C# 1yr.
C++
Python
CSS
HTML
Ethers.js
Node.js
Web3.js
CodeIgniter
MongoDB
BitBucket
Bitcoin Blockchain
BSC
Ethers.js
ETH (Ethereum blockchain)
Hardhat
MetaMask
Phantom
Remix
Tron
Truffle
Docker
LAMP
OpenCart
WordPress
Telegram API
CodeIgniter 3+
LEMP
MERN stack (MongoDB, Express, React, Node)
Metamask SDK
Opencart 3
WalletConnect
...

- 10+ years experience as a Full-Stack Developer with of developing robust web applications and services, including extensive experience in both frontend and backend technologies; - Technical proficiency with PHP and MySQL for server-side development, advanced JavaScript utilization on the client side; - Strong abilities with blockchain technology engagement, including smart contracts and wallet development using Solidity, Hardhat, Truffle, WalletConnect, and Metamask SDK; - Experienced with libraries Web3.js, and Ethers.js; - Ability to work Ethereum Blockchain, Binance Smart Chain (BSC), with different wallets including MetaMask; - Adept at working with a variety of frameworks and languages beyond core competencies, such as Laravel, Solidity, Node.js, and C++; - Up-to-date with modern practices, possessing comprehensive experience in codebase upgrades, performance optimization, and integrating third-party APIs; - Successfully led a development team, demonstrating strong leadership and project estimation skills.

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Seniority Senior (5-10 years)
Location Ukraine
PHP 7yr.
JavaScript 6yr.
TypeScript 3yr.
Solidity
Vanilla JS
Laravel 6yr.
PHPUnit 5yr.
PHPUnit 5yr.
Bootstrap 4 4yr.
Github Actions 4yr.
RESTful API 4yr.
jQuery 3yr.
SASS 3yr.
React 3yr.
Azure Arm templates 3yr.
Azure Arm templates 3yr.
Ajax 2yr.
MariaDB 2yr.
BitBucket 2yr.
Selenium Webdriver 2yr.
JSON-RPC 2yr.
Tailwind CSS 1yr.
Web3.js 1yr.
PostgreSQL 1yr.
Redis 1yr.
GitLab CI 1yr.
GRPC 1yr.
Stripe 1yr.
Tiktok 1yr.
CSS
HTML
JSON
NativeJS
Node.js
Vue.js
Apache ZooKeeper
AWS ElasticSearch
MySQL
AWS ElasticSearch
Phantom
Solana
Alpine.js
gRPC Microservices
...

-Software Engineer with 7 years in the tech industry, with a robust computer science and software engineering background. - Strong knowledge of Vanilla PHP and JavaScript and front-end and back-end development skills. -Expertise spans prominent domains such as eCommercee& retail, Marketplace, Blockchain, Entertainment, Game dev, Social Network, Healthcare, Analytics, Education -Incorporated advanced technologies like Web3.js and Elasticsearch into projects, demonstrating a balance of front-end and back-end skills. -Capabilities extend beyond app architecture, database design, and optimization with MySQL and other databases. -Proven track record of leveraging Docker and Nginx for DevOps, underpinned by a solid grasp of Git. -Has effectively fulfilled the role of Team Lead, showcasing skills in mentorship, code review, and workflow optimization.

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Seniority Senior (5-10 years)
Location Poland

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Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager
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How and where is Wallets (Integration & Transaction Signing) used?

  • Secure Payment Processing: Secure financial transactions
  • Cryptocurrency Exchanges: Facilitate crypto trading
  • Decentralized Applications: Enable seamless app integration
  • Reward Programs: Manage loyalty points efficiently
  • Identity Verification: Verify user identities securely
  • Token Sales: Conduct token sales smoothly
  • Smart Contracts: Execute automated contract functions
  • Multi-Signature Wallets: Enhance security through multiple signatures
  • Mobile Wallet Integration: Enable mobile payments
  • Cross-Border Transactions: Facilitate international money transfers

Compare Junior, Middle, Senior, and Expert/Team Lead Wallets (Integration & Transaction Signing) Developer roles

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior1-2 years
  • Code integration
  • Basic transaction signing
$60,000
Middle3-5 years
  • Complex integration tasks
  • Transaction validation
$80,000
Senior6-8 years
  • Lead integration projects
  • Implement advanced signing algorithms
$100,000
Expert/Team Lead9+ years
  • Architect wallet systems
  • Mentor team members
$120,000

Quick Facts about Wallets (Integration & Transaction Signing).

  • Bitcoin Improvement Proposal 32 introduced hierarchical deterministic wallets in 2012.
  • Cryptocurrency projects and blockchain applications commonly use wallet technology.
  • Developing wallet software requires understanding blockchain technology and cryptography.
  • Ethereum is one of the most popular platforms related to wallet development.
  • The first Bitcoin transaction involved buying two pizzas for 10,000 Bitcoins.

TOP Wallets (Integration & Transaction Signing) Related Technologies

  1. Ethereum (Vitalik, 2015)
  2. Hyperledger Fabric (Linux Foundation, 2016)
  3. Ripple (Ryan, Arthur, and David, 2012)
  4. Stellar (McCaleb, Joyce, Kim, 2014)
  5. Cardano (IOHK, 2017)

What are top Wallets (Integration & Transaction Signing) instruments and tools?

  • MetaMask: A browser extension by ConsenSys released in 2016
  • Trezor: Hardware wallet by SatoshiLabs released in 2014
  • Ledger Nano S: Hardware wallet by Ledger released in 2016
  • Coinbase Wallet: Mobile wallet by Coinbase released in 2018
  • Trust Wallet: Mobile wallet by Binance released in 2017
  • MyEtherWallet: Open-source wallet released in 2015
  • Exodus: Desktop wallet by Exodus Movement released in 2015
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Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

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FAQs on Wallets (Integration & Transaction Signing) Development

What is a Wallets (Integration & Transaction Signing) Developer? Arrow

A Wallets (Integration & Transaction Signing) Developer is a specialist in the Wallets (Integration & Transaction Signing) framework/language, focusing on developing applications or systems that require expertise in this particular technology.

Why should I hire a Wallets (Integration & Transaction Signing) Developer through Upstaff.com? Arrow

Hiring through Upstaff.com gives you access to a curated pool of pre-screened Wallets (Integration & Transaction Signing) Developers, ensuring you find the right talent quickly and efficiently.

How do I know if a Wallets (Integration & Transaction Signing) Developer is right for my project? Arrow

If your project involves developing applications or systems that rely heavily on Wallets (Integration & Transaction Signing), then hiring a Wallets (Integration & Transaction Signing) Developer would be essential.

How does the hiring process work on Upstaff.com? Arrow

Post Your Job: Provide details about your project.
Review Candidates: Access profiles of qualified Wallets (Integration & Transaction Signing) Developers.
Interview: Evaluate candidates through interviews.
Hire: Choose the best fit for your project.

What is the cost of hiring a Wallets (Integration & Transaction Signing) Developer? Arrow

The cost depends on factors like experience and project scope, but Upstaff.com offers competitive rates and flexible pricing options.

Can I hire Wallets (Integration & Transaction Signing) Developers on a part-time or project-based basis? Arrow

Yes, Upstaff.com allows you to hire Wallets (Integration & Transaction Signing) Developers on both a part-time and project-based basis, depending on your needs.

What are the qualifications of Wallets (Integration & Transaction Signing) Developers on Upstaff.com? Arrow

All developers undergo a strict vetting process to ensure they meet our high standards of expertise and professionalism.

How do I manage a Wallets (Integration & Transaction Signing) Developer once hired? Arrow

Upstaff.com offers tools and resources to help you manage your developer effectively, including communication platforms and project tracking tools.

What support does Upstaff.com offer during the hiring process? Arrow

Upstaff.com provides ongoing support, including help with onboarding, and expert advice to ensure you make the right hire.

Can I replace a Wallets (Integration & Transaction Signing) Developer if they are not meeting expectations? Arrow

Yes, Upstaff.com allows you to replace a developer if they are not meeting your expectations, ensuring you get the right fit for your project.