This job post is closed and the position is probably filled. Please do not apply. Work for Toptal and want to re-open this job? Use the edit link in the email when you posted the job!
Design your full-time freelance career as a top freelance developer with Toptal.
Freelance work is defining developer careers in exciting new ways. If you’re passionate about finding rapid career growth potential working with leading Fortune 500 brands and innovative Silicon Valley startups, Toptal could be a great fit for your next career shift.
Toptal is an elite talent network made up of the world’s top 3% of developers, connecting the best and brightest freelancers with top organizations. Unlike a 9-to-5 job, you’ll choose your own schedule and work from anywhere. Jobs come to you, so you won’t bid for projects against other developers in a race to the bottom. Plus, Toptal takes care of all the overhead, empowering you to focus on successful engagements while getting paid on time, at the rate you decide, every time. Our sophisticated screening process makes sure you are provided with top clients without additional overhead, as well as assistance in maximizing the potential of your full-time freelance career. Joining the Toptal network also gives you access to technical training programs, mentors, and coaching programs, so you can connect with a global community of experts like you to share peer-to-peer knowledge and expand your network globally.
As a freelance developer, you can become a part of an ever-expanding community of experts in over 120 countries, working remotely on projects that meet your career ambitions.
That’s why the world’s top 3% of developers choose Toptal. Developers in our network share:
English language proficiency
3+ years of professional experience
Project management skills
A keen attention to detail
Experience with system architecture or leading a software team is a strong advantage
Full-time availability is a strong advantage
Curious to know how much you could make? Check out our Blockchain developer rate calculator: https://topt.al/bNc3AQ
If you’re interested in pursuing an engaging career working on full-time freelance jobs for exclusive clients, take the next step by clicking apply and filling out the short form: https://topt.al/4ycWmM
Salary and compensation
$50,000 — $300,000/year
Location
Worldwide
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
This job post is closed and the position is probably filled. Please do not apply. Work for Toptal and want to re-open this job? Use the edit link in the email when you posted the job!
### Design your full-time freelance career as a top freelance developer with Toptal.
Freelance work is defining developer careers in exciting new ways. If you’re passionate about finding rapid career growth potential working with leading Fortune 500 brands and innovative Silicon Valley startups, Toptal could be a great fit for your next career shift.
Toptal is an elite talent network made up of the world’s top 3% of developers, connecting the best and brightest freelancers with top organizations. Unlike a 9-to-5 job, you’ll choose your own schedule and work from anywhere. **Jobs come to you, so you won’t bid for projects against other developers in a race to the bottom.** Plus, Toptal takes care of all the overhead, empowering you to focus on successful engagements while getting paid on time, at the rate you decide, every time. Our sophisticated screening process makes sure you are provided with top clients without additional overhead, as well as assistance in maximizing the potential of your full-time freelance career. Joining the Toptal network also gives you access to technical training programs, mentors, and coaching programs, so you can connect with a global community of experts like you to share peer-to-peer knowledge and expand your network globally.
As a freelance developer, you can become a part of an ever-expanding community of experts in over 120 countries, working remotely on projects that meet your career ambitions.
That’s why the world’s top 3% of developers choose Toptal. Developers in our network share: * English language proficiency * 3+ years of professional experience * Project management skills * A keen attention to detail * Experience with system architecture or leading a software team is a strong advantage * Full-time availability is a strong advantage
Curious to know how much you could make? Check out our Blockchain developer rate calculator: [https://topt.al/bNc3AQ](https://topt.al/bNc3AQ)
If you’re interested in pursuing an engaging career working on full-time freelance jobs for exclusive clients, take the next step by clicking apply and filling out the short form: [https://topt.al/4ycWmM](https://topt.al/4ycWmM)
Salary and compensation
$50,000 — $300,000/year
Location
Worldwide
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
This job post is closed and the position is probably filled. Please do not apply. Work for district0x.io and want to re-open this job? Use the edit link in the email when you posted the job!
Solidity Developer Role district0x is a global organization developing the next generation of decentralized applications (dApps). Built using Ethereum, Snapshot, and IPFS, district0x is a network of marketplace dApps known as districts. Our mission is to decentralize the ownership structure of the world's marketplace by providing a platform for the creation, operation, and governance of peer-to-peer marketplaces.
Summary of Position: The district0x tech stack is driven in the backend by smart contracts developed in Solidity and deployed to the Ethereum blockchain, and in the front end by Clojurescript, React, and Re-frame served via the Interplanetary File System and a Clojure server linked via GraphQL.
As a Solidity Developer, your primary goal is to build front end interfaces for new districts and extend libraries to serve user-made districts. The secondary goal is to create new and secure services written in Solidity, and develop automated test cases for these services. Solidity Developers should work independently when building, but must collaborate with other developers in order to check each other's work and maintain the highest standards of code quality. A great Solidity Developer will go above and beyond by building new and unique user experiences, and automating any routines for the business at large.
Responsibilities
Key Responsibilities:
Establish a clean and efficient development, test, and production environment.
Deliver secure, high quality smart contracts in Solidity.
Write and implement test suites covering the full range of code functionality.
Collaborate with the team to define architecture, quality standards, and best practices.
Diligently document all aspects of open-source contributions.
Create unique solutions to dApp-specific user experience challenges.
Build cutting-edge scalability solutions for the Ethereum network.
Requirements
The ideal candidate will have:
2+ years of experience developing in Solidity or in Web3 - you MUST be able to demonstrate this with public repositories or contracts. No other applications will be considered.
Working knowledge of scalability solutions, including zk-sync, optimistic rollups, or sharding.
A passion for cryptocurrencies and other peer-to-peer technologies
Please mention the word BENEFITS when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
Salary and compensation
$110,000 — $130,000/year
Location
Worldwide
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
This job post is closed and the position is probably filled. Please do not apply. Work for OMG and want to re-open this job? Use the edit link in the email when you posted the job!
**Web3 Developer**\n\nWe are looking for an experienced Web3 Developer to join our development team. You will be responsible for the server/blockchain/SDK side of our Web3 applications and API endpoints.\n\n* Location: Full-Remote, Anywhere (EU/US/CA/UK/BY)\n* Currency: USD, EUR, or GBP\n* Contract: Self-Employed / Contractor\n\n**About OMG**\n\nOMG (Online Media Group) is a digital media agency and content delivery platform. We are attentive, innovative, disruptive, and work tirelessly in our mission to inform and entertain worldwide audiences. Our platform serves globally recognized brands and reaches a monthly audience of over 20 million across nearly 50 billion engagement moments.\n\n**Working at OMG**\n\nAt our core, we are a technology driven organization; our people are highly skilled, creative, and focused on the goal. Some of them are generalists, some are specialists, all are problem solvers who want to see their input make a difference to our success. The senior leadership has a demonstrated track record, a vast amount of experience to share, and thrives on helping people succeed and grow.\n\nWe offer the opportunity to become part of our international, full-remote, organization; a dynamic, fast moving, but ultimately fun and challenging environment where we value independence and initiative, create opportunities for career development, and eliminate friction so that we can be an organization where everyone can deliver their absolute best.\n\n**About the Role**\n\nIf you have excellent programming skills and a passion for developing Web3 applications or improving existing ones, we would like to meet you. As a Web3 Developer, you’ll work closely with our engineers to ensure system consistency and improve the user experience.\n\nYou should be able to develop and maintain functional and stable blockchain, API, and web applications/SDKs to meet our needs.\n\n**Responsibilities**\n\n* Participate in the entire application life-cycle, focusing on coding and debugging\n* Solid Solidity, Go, Rust, and NodeJS knowledge is essential\n* Write clean code to develop functional Web3 applications and API's\n* Troubleshoot and debug applications\n* Perform tests to optimize performance\n* Manage cutting-edge technologies to improve legacy sensitive and large-scale applications\n* Collaborate with Front-End Developers to integrate user-facing elements with server-side logic\n* Gather and address technical and design requirements\n* Provide training and support to internal teams\n* Build reusable code and libraries for future use\n* Liaise with developers, designers, and system administrators to identify new features\n* Follow emerging technologies\n\n**Requirements**\n\n* Proven work experience as a Web3 Developer\n* In-depth understanding of the entire web development process (design, development, and deployment)\n* Hands on experience with Web3 technologies\n* Excellent analytical and time management skills\n* Teamwork skills with a problem-solving attitude\n* BSc degree in Computer Science or relevant field, or equivalent experience \n\nPlease mention the word **JUBILATE** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjU=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n
$60,000 — $120,000/year\n
\n\n#Location\nWorldwide
# How do you apply?\n\nThis job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
district0x is a global organization developing the next generation of decentralized applications (dApps). Built using Ethereum, Aragon, and IPFS, district0x is a network of marketplace dApps known as districts. Our mission is to decentralize the ownership structure of the world's marketplace by providing a platform for the creation, operation, and governance of peer-to-peer marketplaces.\n\nSummary of Position: The district0x tech stack is driven in the backend by smart contracts developed in Solidity and deployed to the Ethereum blockchain, and in the front end by Clojurescript, React, and Re-frame served via the Interplanetary File System and a Clojure server linked via GraphQL.\n\nAs a Clojurescript Developer, your primary goal is to build front end interfaces for new districts and extend libraries to serve user-made districts. The secondary goal is to create new and secure services written in Solidity, and develop automated test cases for these services. Clojurescript Developers should work independently when building, but must collaborate with other developers in order to check each other's work and maintain the highest standards of code quality. A great Clojurescript Developer will go above and beyond by building new and unique user experiences, and automating any routines for the business at large.\n\n# Responsibilities\nKey Responsibilities:\n* Establish a clean and efficient development, test, and production environment.\n* Deliver best-in-class front-end solutions in Clojure.\n* Write and implement test suites covering the full range of code functionality.\n* Collaborate with the team to define architecture, quality standards, and best practices.\n* Diligently document all aspects of open-source contributions.\n* Create unique solutions to dApp-specific user experience challenges.\n* Build software that is FUN to use!\n\n# Requirements\nThe ideal candidate will have:\n* 3+ years of experience developing user-facing web applications\n* Working knowledge of Clojure/Clojurescript\n* Experience with re-frame libraries\n* A passion for cryptocurrencies and other peer-to-peer technologies\n* A basic understanding of how the Ethereum network and smart contracts operate\n\nAdditionally, you MUST be able to:\n* Speak and write English fluently\n* Communicate proactively (we are 100% remote!)\n* Work independently towards deadlines\n* Accept a salary paid in Ether\n \n\nPlease mention the words **FORK REBEL UNABLE** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjU=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n
$100,000 — $150,000/year\n
\n\n#Location\nWorldwide
# How do you apply?\n\nShoot us an email at [email protected], and be sure to include some link to work you've completed with publicly available code.
👉 Please reference you found the job on Remote OK, this helps us get more companies to post here, thanks!
When applying for jobs, you should NEVER have to pay to apply. You should also NEVER have to pay to buy equipment which they then pay you back for later. Also never pay for trainings you have to do. Those are scams! NEVER PAY FOR ANYTHING! Posts that link to pages with "how to work online" are also scams. Don't use them or pay for them. Also always verify you're actually talking to the company in the job post and not an imposter. A good idea is to check the domain name for the site/email and see if it's the actual company's main domain name. Scams in remote work are rampant, be careful! Read more to avoid scams. When clicking on the button to apply above, you will leave Remote OK and go to the job application page for that company outside this site. Remote OK accepts no liability or responsibility as a consequence of any reliance upon information on there (external sites) or here.
district0x is a global organization developing the next generation of decentralized applications (dApps). Built using Ethereum, Aragon, and IPFS, district0x is a network of marketplace dApps known as districts. Our mission is to decentralize the ownership structure of the world's marketplace by providing a platform for the creation, operation, and governance of peer-to-peer marketplaces.\n\nSummary of Position: The district0x tech stack is driven in the backend by smart contracts developed in Solidity and deployed to the Ethereum blockchain, and in the front end by Clojurescript, React, and Re-frame served via the Interplanetary File System and a Clojure server linked via GraphQL.\n\n\nAs a Clojurescript Developer, your primary goal is to build front end interfaces for new districts and extend libraries to serve user-made districts. The secondary goal is to create new and secure services written in Solidity, and develop automated test cases for these services. Clojurescript Developers should work independently when building, but must collaborate with other developers in order to check each other's work and maintain the highest standards of code quality. A great Clojurescript Developer will go above and beyond by building new and unique user experiences, and automating any routines for the business at large.\n\n# Responsibilities\n
Key Responsibilities:\n* Establish a clean and efficient development, test, and production environment.\n* Deliver best-in-class front-end solutions in Clojure.\n* Write and implement test suites covering the full range of code functionality.\n* Collaborate with the team to define architecture, quality standards, and best practices.\n* Diligently document all aspects of open-source contributions.\n* Create unique solutions to dApp-specific user experience challenges.\n* Build software that is FUN to use! \n\n# Requirements\nThe ideal candidate will have:\n* 3+ years of experience developing front-end web applications\n* Working knowledge of Clojure/Clojurescript\n* Experience with re-frame libraries\n* A passion for cryptocurrencies and other peer-to-peer technologies\n* A basic understanding of how the Ethereum network and smart contracts operate\n\nAdditionally, you MUST be able to:\n* Speak and write English fluently\n* Communicate proactively (we are 100% remote!)\n* Work independently towards deadlines\n* Accept a salary paid in Ether \n\nPlease mention the words **WHISPER REFLECT CRAWL** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjU=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n
No salary data published by company so we estimated salary based on similar jobs related to JavaScript, React, Crypto, Clojure, Web3, Blockchain, Solidity, Ethereum, Developer, Digital Nomad and Backend jobs that are similar:\n\n
$60,000 — $130,000/year\n
\n\n#Location\nWorldwide
👉 Please reference you found the job on Remote OK, this helps us get more companies to post here, thanks!
When applying for jobs, you should NEVER have to pay to apply. You should also NEVER have to pay to buy equipment which they then pay you back for later. Also never pay for trainings you have to do. Those are scams! NEVER PAY FOR ANYTHING! Posts that link to pages with "how to work online" are also scams. Don't use them or pay for them. Also always verify you're actually talking to the company in the job post and not an imposter. A good idea is to check the domain name for the site/email and see if it's the actual company's main domain name. Scams in remote work are rampant, be careful! Read more to avoid scams. When clicking on the button to apply above, you will leave Remote OK and go to the job application page for that company outside this site. Remote OK accepts no liability or responsibility as a consequence of any reliance upon information on there (external sites) or here.
This job post is closed and the position is probably filled. Please do not apply. Work for PolySwarm and want to re-open this job? Use the edit link in the email when you posted the job!
***In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.***\n\n\n**Job type:** Full-time \n**Role:** Full-Stack Developer \n**Experience level:** Mid-Level, Senior\n**Industry:** Cryptocurrency, Cybersecurity, Network Security, Blockchain \n**Company size:** 11-50 people\n**Location:** San Diego, CA, San Juan, Puerto Rico, Tokyo, Japan or **Remote**\n\n\n**Join the Swarm**\n\nAt Swarm Technologies, Inc, we're developing innovative solutions to age-old information security problems - and we need your help.\n\nAt its core, PolySwarm is market design enabled by Ethereum smart contracts. We are programming a market that will produce crowdsourced threat intelligence (malware detection today, more tomorrow).\n\n** Blockchain experience not required! **\n\nWe're operating in a very new industry and we're prepared to bring candidates up to speed! Few sectors are hot as blockchain right now - talk about professional growth\n\nNo one has done this before. We'll get things wrong - and that's okay! With your help, we'll get fewer things wrong, identify mistakes earlier, and improve processes to prevent future missteps.\n\nYou're in on the ground floor - you'll have a say in what we do and how we do it. By joining Swarm Technologies, you'll be joining a dynamic team on the bleeding edge of information (computer) security and blockchain - answering questions few have thought to ask.\n\n**If you're interested in**\n- technical challenges that cannot be solved via iteration\n- blockchain (Ethereum smart contracts in particular)\n- information security\n- malware reverse engineering automation\n- market design (a la Who Gets What and Why by Alvin Roth)\n- software development\n- unknown unknowns\n\n**then we're interested in you!**\n\n**The Ideal Candidate Is:**\n- independently motivated & self-directing\n- introspective: able to identify weak spots / problem areas our existing processes or code and suggest / implement solutions\n- takes an interest in information security topics - huge props for capture the flag (CTF) participation!\n- enjoys developing software\n\n**At Swarm Technologies, you'll tackle both big-picture and tactical problems, the following are a few examples.**\n\n**Example Big-Picture Problems**\n\nThe Ethereum block time leaves a lot to be desired for a marketplace that intends to supplant millions of malware scans a day.\n\nHow do we best reconcile millions of scans daily with a 15 second block time and today's block size limits?\n\nIn sum: PolySwarm must scale and must support scanning artifacts (files) that may contain confidential information. How do we best reconcile these needs with a default-public, Proof-of-Work Ethereum ecosystem?\n\n**Example Tactical Problem**\n\nPolySwarm is a twist on a prediction market - where security experts attempt to "predict" whether a file / URL or network traffic is malicious or benign. Alongside their prediction ("assertion"), experts "stake" a configurable amount of Nectar (NCT), PolySwarm's crypto token.\n\nSuppose Expert A is lazy and Expert B is a hardworking, upstanding security expert. It would be bad if Expert A was able to simply duplicate the assertions coming from Expert B, exploiting Expert B's hard work for profit. If assertions are placed directly on the public Ethereum blockchain, Expert A can do exactly that.\n\nHow can we design a system that keeps the assertion secret (so Expert B is out of luck) until some configured time, after which assertions are revealed and payouts distributed appropriately?\n\n**The Ideal Candidate possesses demonstrable experience in some or all of these technologies.**\n\nPolySwarm employs the following tools & languages:\nPython\nDocker (+ Swarm, Services, Stack)\nKubernetes (+ Helm)\nTerraform\nAnsible\nSolidity\nReact\nJavaScript\nRust\n\nRefer to our GitHub for examples of our usage: https://github.com/polyswarm\n\n**We Offer**\n- Competitive salaries\n- Excellent health, dental, vision coverage\n- Paid vacation days\n- Travel (if you like). We have offices in San Diego, Puerto Rico and Tokyo and we often find ourselves travelling elsewhere. If travel interests you, we can scratch that itch.\n- Flexible work hours - outside of scheduled meetings, we don't care when you work, we care about your output.\n- Powerful servers, laptops, desktops - whatever you need to be most productive! \n\nPlease mention the words **PLUG POTATO EASILY** when applying to show you read the job post completely (#RMjE2LjczLjIxNi4xMjU=). This is a feature to avoid spam applicants. Companies can search these words to find applicants that read this and see they're human.\n\n \n\n#Salary and compensation\n
No salary data published by company so we estimated salary based on similar jobs related to JavaScript, Crypto, Python, Full Stack, Web3, Blockchain, Solidity, Ethereum, Developer, Digital Nomad and Travel jobs that are similar:\n\n
$70,000 — $130,000/year\n
# How do you apply?\n\nThis job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
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