The ultimate guide to hiring a web developer in 2021
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
Blockchain, is a technology that encompasses digital records or information, referred to as “blocks”, that are linked together securely and share the same network. This distributed ledger technology is the backbone of a new wave of innovation being implemented into our lives, with new disruptive applications and solutions seen in a growing number of industries. Clients may hire a Blockchain Developer to harness this power and build a secure digital platform tailored to their business needs.
A Blockchain Developer can create unique solutions leveraging blockchain technology to securely store, access, mine and distribute data in an efficient manner. They can leverage features such as blockchain tokens for payments, smart contracts for automated transactions, privacy layers and data protection techniques. Additionally, the expertise of a Blockchain Developer will ensure the project complies with industry standards, ensuring secure data and validation.
Here's some projects that our expert Blockchain Developer made real:
At Freelancer.com customers have posted amazing projects covering a variety of use cases related to blockchain utilising the Freelancer verified experts. With help from professionals on Freelancer.com customers can create unique projects addressing their business needs with safety, security and legality in mind. Rock your blockchain project today and hire an expert Blockchain Developer on Freelancer.com now!
Asiakkaamme antoivat 74,532 arvostelussa keskimääräisen arvosanan Blockchain Developers 4.83 / 5 tähteä.Blockchain, is a technology that encompasses digital records or information, referred to as “blocks”, that are linked together securely and share the same network. This distributed ledger technology is the backbone of a new wave of innovation being implemented into our lives, with new disruptive applications and solutions seen in a growing number of industries. Clients may hire a Blockchain Developer to harness this power and build a secure digital platform tailored to their business needs.
A Blockchain Developer can create unique solutions leveraging blockchain technology to securely store, access, mine and distribute data in an efficient manner. They can leverage features such as blockchain tokens for payments, smart contracts for automated transactions, privacy layers and data protection techniques. Additionally, the expertise of a Blockchain Developer will ensure the project complies with industry standards, ensuring secure data and validation.
Here's some projects that our expert Blockchain Developer made real:
At Freelancer.com customers have posted amazing projects covering a variety of use cases related to blockchain utilising the Freelancer verified experts. With help from professionals on Freelancer.com customers can create unique projects addressing their business needs with safety, security and legality in mind. Rock your blockchain project today and hire an expert Blockchain Developer on Freelancer.com now!
Asiakkaamme antoivat 74,532 arvostelussa keskimääräisen arvosanan Blockchain Developers 4.83 / 5 tähteä.I'm in the early stages of developing a memecoin project and need help with concept development and securing funding. Key tasks include: - Developing a unique and engaging memecoin concept - Designing a sustainable and attractive tokenomics model - Securing funding through non-equity means (investors, crowdfunding, grants) Ideal skills and experience: - Strong background in cryptocurrency and blockchain - Experience in tokenomics and smart contract development - Proven track record in securing funding for crypto projects - Creative thinker with a passion for memecoins I need someone who can help me shape my idea and connect me with the necessary funds to bring it to life.
I’m expanding our engineering team at LaRevela, the Web3 identity and visitor-intelligence platform for eCommerce, and I need a skilled technical recruiter who is already on the ground in China. Your mission is to identify and secure a mid-level Full-Stack Blockchain Developer who excels at full-stack development and seamless Web3 integration. What the ideal hire must bring: solid, hands-on JavaScript, Python, and Solidity experience, plus a track record of shipping blockchain-enabled products that actually reach users. You’ll handle the entire funnel—sourcing across local and remote talent pools, screening for technical depth, coordinating interviews, and guiding compensation conversations in line with our global structure. Deliverables I expect from you: • A ve...
I'm seeking an experienced professional to verify both the identity and location of a person using the following documents: email address, Lovense ID, and bitcoin wallet. Ideal Skills and Experience: - Background in verification services - Familiarity with cryptocurrency and digital identities - Strong attention to detail and accuracy - Prior experience in handling sensitive information securely Please include relevant experience in your application.
Quero lançar um token próprio, padrão TRC-20, na rede TRON. O ativo deverá se chamar “Moeda” e usar o símbolo “usdt”. Preciso do contrato inteligente completo, escrito em Solidity para a máquina virtual da TRON, já configurado para: • Transferências, aprovações e consulta de saldo dentro das normas TRC-20 • Compatibilidade imediata com TronLink, TRONSCAN e qualquer carteira que suporte tokens TRON • Verificação de código no TRONSCAN, exibindo nome, símbolo, supply e decimals corretamente Entrego o nome, símbolo e supply inicial; espero de você: 1. Código-fonte claro, comentado e sem dependências obscuras 2. Compila&cced...
Academic Research Report & Presentation Project Overview I am looking for a skilled freelancer to complete an academic project for (Management Information Systems). The project requires in-depth research on a selected technology topic, a formal written report (10–15 pages), and a PowerPoint presentation to be delivered on the submission date. Topic The freelancer will research and write about one of the following topics IN Saudi Arabia (to be agreed upon): • Data Mining & Big Data • E-Government • E-Business & E-Commerce • Intranet & Extranet • Collaboration & Social Business • Blockchain Technologies (Cryptocurrencies, Distributed Ledgers, etc.) • Cybersecurity • Mobile and Cloud Computing • Fintech (Proptech, Insur...
looking for a smart contract developer who really knows their stuff and has at least 3 years of hands-on experience working with blockchain projects. You'll be helping build and deploy smart contracts, making sure everything is secure, efficient, and works smoothly. Ideally, you're comfortable working with Solidity and have experience with tools like Hardhat or Truffle, along with Web3 libraries. It's important that you understand how blockchain systems work and can spot potential security issues before they become problems. I'm looking for someone who's reliable, communicates well, and can take ownership of their work. If you've worked on DeFi, NFTs, or similar projects before, that's a big plus, feel free to share anything you've built. If this ...
I’m building a web platform whose core purpose is letting users trade stocks directly with one another and list their holdings for sale. In addition to stocks, I ultimately want the same peer-to-peer and sales flow to accommodate cryptocurrencies and foreign-exchange pairs, but the stock module is the milestone we’ll start with. Here is what I need delivered: • A secure, browser-based application (front-end + back-end) that allows user registration, KYC hooks, wallet/balance management, and two complementary flows—peer-to-peer trade matching and straightforward sales listings. • An order book or bulletin-board style interface where offers can be posted, searched, accepted, partially filled, or cancelled. • Transaction engine that locks the seller&rsqu...
I need an experienced developer to create a smart contract on the Solana blockchain for token creation. Requirements: - Proficiency in Solana and smart contract development - Experience with token creation - Strong understanding of blockchain technology Ideal Skills: - Expertise in Rust or C (Solana programming languages) - Previous projects on Solana - Problem-solving and debugging skills Also to add in tax free and return coin to wallett Please provide examples of previous work and relevant experience.
I need a full-stack, self-hosted .NET solution that runs a 2 × 2 matrix MLM system. The site must let new members register under a sponsor, automatically position them in the chain, and reflect spill-over earnings in real time. Core roles are Standard user, Sponsor and Admin. A registered user should see a clean dashboard that shows an earnings overview, live balance details and a searchable transaction history. From that same panel they must be able to deposit, withdraw or transfer BEP20-based USDT, with each on-chain action recorded to the ledger and mirrored instantly in the database. The admin control panel must allow me to browse every account, approve or reject any pending deposit/withdraw request, modify wallet addresses if needed, and trigger manual payouts. Every sensitive...
My DeFi protocol is code-complete and ready for public launch, but it cannot go live until an exhaustive penetration test confirms it is watertight. The scope is limited to the Solidity smart contracts powering liquidity pools, staking logic, rewards distribution, and governance. I need you to probe for the full range of threats—re-entrancy, flash-loan manipulation, oracle spoofing, unchecked arithmetic, gas griefing, privilege escalation, and any logic flaws unique to DeFi. A balanced mix of automated scanners (e.g., Slither, MythX, Echidna) and deep manual review is expected so no subtle issue slips through. Deliverables • Comprehensive audit report detailing every vulnerability, its severity, reproduction steps, and clear remediation advice • Proof-of-concept e...
I need a full-stack, self-hosted .NET solution that runs a 2 × 2 matrix MLM system. The site must let new members register under a sponsor, automatically position them in the chain, and reflect spill-over earnings in real time. Core roles are Standard user, Sponsor and Admin. A registered user should see a clean dashboard that shows an earnings overview, live balance details and a searchable transaction history. From that same panel they must be able to deposit, withdraw or transfer BEP20-based USDT, with each on-chain action recorded to the ledger and mirrored instantly in the database. The admin control panel must allow me to browse every account, approve or reject any pending deposit/withdraw request, modify wallet addresses if needed, and trigger manual payouts. Every sensitive...
I need a production-ready mobile wallet that lets users store a variety of cryptocurrencies in one place. The core requirement is a clean, intuitive interface for holding multiple assets, synced seamlessly across both iOS and Android. Security must begin with rock-solid PIN protection on every sensitive action—unlocking the app, initiating a transfer, or exporting a private key. If you have proven techniques to layer Biometric or 2-FA on top without sacrificing speed, feel free to propose them, but PIN security is the baseline I will accept. A single codebase such as React Native or Flutter is ideal for faster parallel releases, though native Swift/Kotlin solutions are welcome if they give measurable speed or UX advantages. The finished product has to pass TestFlight / Play Consol...
I want a bootable .img image for the Raspberry Pi 4 that turns the board into a fully offline, hardware-style wallet. After flashing the image to an SD card and powering up, I expect a clean graphical interface that lets me: • Generate and manage addresses for roughly forty of the most-used coins and tokens. • Sign and later broadcast transactions only when I briefly connect the Pi to a network. • Move funds straight to a linked bank account by entering a routing and account number—ACH style—without ever needing a third-party exchange. The build has to run reliably with no internet dependency at first boot, keeping all keys on the device and encrypted at rest. A simple on-screen flow for first-time setup, balance overview, and transfers is essential; I shou...
I need a single .img file that I can flash straight to a micro-SD, slot into a Raspberry Pi 4, power on, and start mining—no extra setup, no internet connection, just plug-and-play. The image must boot directly into an advanced graphical interface that lets me monitor hashrate, temperature, accepted shares, pool status, and switch coins without touching the command line. The core requirement is support for the three main algorithms I selected—SHA-256, Ethash, and Cryptonight—so the device can tackle my full portfolio of roughly forty coins. Performance matters: the system should auto-detect optimal overclock settings for the Pi 4, make efficient use of its GPUs/CPUs, and offer pool configuration options over the local network while remaining completely self-contained (...
I'm looking for an experienced blockchain developer to create a smart contract for a DeFi application. The DApp will focus on staking and yield farming. Key Requirements: - Develop a secure and efficient smart contract - Implement staking and yield farming features - Ensure scalability and security Ideal Skills: - Expertise in smart contract development - Experience with DeFi protocols - Strong knowledge of blockchain security practices Please provide examples of previous work and relevant qualifications.
– High-Quality Backlinks & Profile Creation for Crypto Trading Bot Store () Job Description: I am looking for a dedicated, white-hat off-page SEO expert to handle link building and authority/profile creation for my crypto trading bot e-commerce website: cryptotradebot.com. About the project is an online store offering algorithmic crypto trading bots that automate trading on major exchanges. The niche is highly competitive (crypto/fintech/Web3), so we need relevant, high-quality backlinks and strategic profile creation to boost domain authority, improve rankings for keywords like “crypto trading bot,” “best AI crypto trading bot,” “automated crypto trading software,” etc., and ultimately drive more organic traffic and sales. Scope of work (init...
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
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