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Check out a sample of the 128 Bitcoin Cash Developer jobs posted on Upwork

Cryptocurrency Tracing & /racking Expert Hourly ‐ Posted 1 day ago

30+ hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience Level

Search more Crypto Coins & Tokens jobs Posted 18 hours ago Only freelancers located in the U,S. may apply. Seeking a blockchain and c…

Bitcoin C++ Bitcoin Jobs Blockchain Encryption JavaScript Python Cryptocurrency API Web Development
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Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience Level

Looking for someone who can load my Binance Everything will be strictly done via upwork only Thanks

Bitcoin Cryptocurrency Bitcoin Jobs Blockchain
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Bitcoin Lightning Network training Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Intermediate
Experience Level

I have a Bitcoin Lightning Network node. I need some training to better understand the channel managin activity, channel balancing. I…

Bitcoin Bitcoin Jobs
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Freelancer - Blockchain Bitcoin Miningcore Hourly ‐ Posted 3 days ago

30+ hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience Level

We are looking for Blockchain Enthusiasts for a freelancers - An expert in the ends and outs of bitcoin mining - The candidate should…

Bitcoin Bitcoin Jobs Ethereum Smart Contract Mining Pool Jobs Cryptocurrency Blockchain Development
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$250
Fixed Price

Intermediate
Experience Level

A software with GUI that can place Buy/Sell orders simultaneously with just one click across several different cryptocurrency exchanges…

Bitcoin Python Cryptocurrency Bot Development Bitcoin Jobs API Integration Forex Trading API Automation
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30+ hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience Level

Provide working instructions on how to load Rampberry Pl onto SD card, or using a Rock Pi device This is for Bitcoin pool lottery minin…

Bitcoin Python Raspberry Pi Raspberry Pi Firmware Blockchain Bitcoin Jobs
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Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience Level

Looking for someone who can load my Binance Everything will be strictly done via upwork only Thanks

Bitcoin Binance Coin Bitcoin Jobs Cryptocurrency Blockchain
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Bitcoin Miners Hourly ‐ Posted 3 days ago

30+ hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience Level

- We need a freelancer who knows the ins and out of bitcoin mining - Have knowledge of all the formulas - Have the knowledge of how t…

Bitcoin Bitcoin Jobs Blockchain Cryptocurrency
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Tokenlite ICO script customization Fixed-price ‐ Posted 3 days ago

$100
Fixed Price

Intermediate
Experience Level

We plan to buy one ICO token sale script and would like to hire some experts to customize this script based on our requirements. 1. In…

Bitcoin Website Redesign Custom PHP Adobe Photoshop PHP Web Development ICO Marketing Bitcoin Jobs HTML CSS
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Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Expert
Experience Level

Need someone who can create me a profitable bot. Either a forex bot or a bitcoin bot.

Bitcoin Forex Trading Bot Development Bitcoin Jobs MetaTrader 4 Cryptocurrency
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How to Become a Freelance Bitcoin Developer

Bitcoin and blockchain technology are some of the most exciting and innovative technologies today, with plenty of opportunities for skilled bitcoin developers. See if you have what it takes to become a freelance bitcoin developer on Upwork.

What does a bitcoin or blockchain developer do?

A bitcoin developer is a type of software engineer who specializes in the bitcoin network and the underlying blockchain technology that powers it. Bitcoin is a decentralized application (DApp) payment system with a public distributed ledger (known as a blockchain) and a cryptocurrency token. Using the blockchain and the bitcoin token, users can anonymously send and receive cryptocurrency around the world without requiring an intermediary.

A blockchain developer will typically either work on the bitcoin core or develop apps and software that use bitcoin, which are most often related to finance. This could involve creating wallet software for users to send and receive bitcoin into, creating financial exchanges for users to trade bitcoin and other cryptocurrencies within the marketplace, or it could involve creating games, gambling services, or apps that use bitcoin as a payment option.

Bitcoin developers are typically cryptographers or people familiar with cryptography and (naturally) cryptocurrencies. Blockchain technology is an emerging field in computer science, so there are very few formal qualifications within the field of blockchain technology, and most bitcoin developers are self-taught. To become a bitcoin developer, a number of tools are required.

Having the right toolset

The codebase of bitcoin and the most popular programming language for working with bitcoin is C++. This means that a prospective bitcoin developer should have a strong background in C++ programming and be familiar with many structures and data types related to finance. Other blockchain programming languages such as Python, Ruby, Solidity, Go, C#, and Java are found within the cryptosphere.

A bitcoin developer should use a preferred IDE (such as Visual Studio, Xcode, or Eclipse) and version control software. The bitcoin core project uses Git and is hosted on Github, but noncore projects might use alternatives. Note that some of the testing framework is written in Python, so an understanding of Python is useful but not necessary.

Understanding the blockchain

Blockchain is immutable and noncustodial. This means that there is no individual person or organization “in charge” of the blockchain, and (after sufficient node validation) any additions to the blockchain are permanent and not capable of being changed or removed.

This means developers need a high level of knowledge and confidence in their understanding of the blockchain when they make changes and submit their code. Some of this knowledge will come from reading and learning about how it works, but a lot will also come from trial and error while working with the blockchain. Fortunately, there is a testnet blockchain for bitcoin that is built for the specific purpose of running tests against, and bitcoin developers should absolutely make use of this.

Writing, testing, and committing code

Due to the immutability of blockchain technology and the use of bitcoin for financial transactions and as a store of value, the cost of mistakes is high and the threshold for fault tolerance in code is very low. Programmers must be very robust and thorough when writing code in order to avoid mistakes.

The testing process for code related to bitcoin is very thorough. Developers must write unit tests for all code that they have written. The bitcoin core uses the popular Boost C++ library, which includes a highly recommended unit-testing framework. In addition to writing unit tests, regression and integration tests are also highly advised. These can all be integrated into a CI automated testing workflow using the testing system from Bitcoin Core.

If you are submitting code to Bitcoin Core, you will need to create a pull request from a topic branch in adherence with the Bitcoin Core contribution process and its coding guidelines. Commits should be atomic, meaning that they should be as small and isolated as possible.

What are popular use cases for blockchain technology?

Bitcoin is not the only cryptocurrency or blockchain technology. However, it was the first, and as such it retains a first-mover advantage in the marketplace, even though it is relatively limited in its blockchain applications. The bitcoin blockchain is built purely for transactions involving bitcoin and has a relatively low TPS (transactions per second) rate. Due to this limitation and overall congestion on the blockchain as bitcoin grows in popularity, Layer 2 solutions have emerged to help reduce traffic and lower fees on transactions.

The most well-known Layer 2 solution for bitcoin is the Lightning Network. This solution performs transactions “off-chain” and batches transactions to be added to the blockchain in order to reduce fees and congestion compared with submitting individual transactions. Layer 2 solutions are very popular, as they help to reduce the burden on bitcoin’s blockchain, and there are many good opportunities for bitcoin developers to get involved.

Other cryptocurrencies such as Ethereum have their own, more-advanced blockchains. In addition to supporting financial transactions, the Ethereum blockchain supports smart contracts, NFTs, and DAOs, which greatly expands the potential use cases.

Jump-start your freelance bitcoin developer career on Upwork and start looking for your first job. Eager to learn more about Bitcoin developer jobs on Upwork? Check out these additional resources:

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this section. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

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