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Cryptorecruit - Back End Developer - Blockchain/Cryptocurrency

Back End Developer - Blockchain/Cryptocurrency

Cryptorecruit Melbourne, Victoria, Australia

Our client, a dynamic blockchain B2C company based in Australia with excellent business culture and passion for excellence is looking for a back end developer to join their team.

Our client offers competitive remuneration based on experience.

The role can be based anywhere in the world because we truly believe in decentralisation!!

However, if you want to relocate or are already in Melbourne, we have some great additional incentives for you:

  • Standing desks
  • Flexible working environment
  • Paid trip to conferences
  • Full private health and medical insurance
  • Gym membership
  • Social club (table tennis, pool, games, etc.)
  • Annual company trip


  • You will be an experienced Senior Back-End Developer with great attention to detail who always aim for breakthrough innovation.
  • You will have solid coding experience (ideally JavaScript/Typescript but other languages are acceptable), advanced knowledge of Firebase and its ecosystem and experience in building and delivering REST API.
  • Your understanding about blockchain and knowledge of web3, IPFS, uPort and interest for Machine Learning and data analytics will be a bonus.

Start Date: As soon as possible.

Cryptorecruit is the world’s leading specialist recruiter for the blockchain/cryptocurrency industry. We recruit positions from CEO, frontend and backend blockchain developers to marketing and customer service roles. Please browse our website and at and make sure to register your details.

Cryptorecruit - Android Mobile Developer

Android Mobile Developer

Cryptorecruit Singapore, Central Singapore Community Development Council, Singapore

Our client is a global front runner in the cryptocurrency industry developing payment tools. They are now looking for a mobile developer to join their fast growth team.

You will be responsible for developing applications that integrate with the web services for Android operating systems.


  • Experience with CI (Continuous Integration)
  • Experience with web markup, including HTML5, CSS3
  • Understanding of server-side CSS pre-processing platforms, such as LESS and SASS
  • Proficiency in client-side scripting and JavaScript frameworks, including jQuery
  • Further experience of JavaScript libraries and frameworks, such as AngularJS, KnockoutJS, BackboneJS, ReactJS or DurandalJS
  • Proficiency with asynchronous request handling, partial page updates, and AJAX
  • Knowledge of other web technologies and UI/UX standards
  • Understanding of Andriod design principles and interface guidelines
  • Familiarity with cloud message APIs and push notifications
  • Experience with Cryptocurrencies and Blockchain technologies would be an advantage

If you have a passion for this exciting fast-growing industry and you’re a pro-active fast learner looking for the opportunity to launch your cryptocurrency career then we’d like to hear from you.

Remuneration: Negotiable depending on experience.

Cryptorecruit are the world's leading specialist recruiter for the blockchain/cryptocurrency industry. We recruit positions from CEO, frontend and backend blockchain developers to marketing and customer service roles. Please browse our website and at and make sure to register your details.

Cryptorecruit - Android Mobile Application Developer

Android Mobile Application Developer

Cryptorecruit Sydney, New South Wales, Australia

Our client is looking for an Android mobile developer to join their development team. Consulting to multiple clients you will provide mobile applications that interface with existing cryptocurrency services. In this role you will have the opportunity to work on diverse and exciting projects across multiple industries.

As a mobile developer for Android you will be up-to date on all the latest mobile technologies.


  • Excellent programming skills with at least two previous applications you in the Play Store
  • Experience contributing to open-source projects
  • Experience developing the backbone to power web, iOS and Android clients
  • Demonstrated ability to write readable, maintainable and well-tested code
  • Experience with RESTful JSON APIs.
  • Knowledge of Bitcoin, Blockchain, or Cryptocurrencies a plus.
  • Experience across the Agile Software Development Lifecycle (SDLC)
  • Bachelor’s degree in Computer Science, Mathematics or related technical discipline
  • Critical thinking and strong initiative
  • Ability to work in rapidly changing and evolving technologies
  • Experience working on payment systems or financial trading systems

Remuneration: 6 month contract up to $800 per day depending on experience.

Cryptorecruit are the world's leading specialist recruiter for the blockchain/cryptocurrency industry. We recruit positions from CEO, frontend and backend blockchain developers to marketing and customer service roles. Please browse our website and at and make sure to register your details.

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X-CASH - Blockchain Core Developer

Blockchain Core Developer

X-CASH Paris, Aude, France

We are a Fintech startup based in Paris, France. Our first product X-CASH is a cryptocurrency which aims at becoming a standard in digital payment and transaction settlement. Thanks to various partnerships with the actors of the financial industry and the launch of derivatives instruments linked to X-CASH, we hope to solve most of the issues linked to cryptocurrencies and reach a wide adoption from both consumers and corporates. About the job As Head of Core Blockchain Development you will report to the CTO and be responsible for maintaining and making evolve the current blockchain X-CASH is based on. This includes: Adding to the core code the latest important updates from Monero’s GitHub repository , Building APIs to prepare the ground base for the next products we will release , Implementing additional core functionalities we need to support the development of X-CASH , Prototyping and researching the next generation of blockchain X-CASH will be based on , Supporting the CTO in his daily tasks What we are looking for , 2y+ of experience as Monero/Cryptonote Developer , Experience in Linux, Python and C , Knowledge of JSON, Node.js, AJAX , Proactive and source of proposal Non-technical skills we are looking for Additionally, you could be a good fit for the team/company if you recognize yourself in one or several of the following points: , Passionate about science and technology , Geek and good at video gaming , Strong desire to change the world and have an impact , Team player and oral/written communication skills What we offer Competitive salary and stake in the project
Authoreon - Blockchain developer

Blockchain developer

Authoreon Munich, Bavaria, Germany

For our Munich office we are looking for an experienced and passionate developer experienced with blockchain technologies – especially Ethereum (Solidity). To excel in this role, you must have a strong understanding of at least one fundamental blockchain technology as well as underlying technical knowledge in areas like cryptography and distributed systems. This position will require you to work on products that are in various stages of development and with cross-functional teams, including web and mobile developers, designers, and product managers.


  • Freedom to choose your own schedule and choose from a variety of hourly, part-time, and full-time projects
  • Access to a thriving, collaborative community of talented peers
  • Competitive compensation
  • TBD


  • Develop, test and deploy Smart Contract applications
  • Maintain existing blockchain implementations and adjust them according to client needs
  • Ensure programmatic and network security of the implemented systems
  • Develop monitoring tools that provide visual representation of the tool’s usage
  • Analyze system performance and devise solutions for bottlenecks and other issues
  • Make sure all systems have a highly secure and up-to-date configuration
  • Work with other developers on troubleshooting and bug investigation


  • Ability to learn and use a wide array of open-source technologies and tools
  • Intimate experience with writing highly secure software on at least one smart contract platform
  • Strong knowledge of the fundamental blockchain technology
  • Technical knowledge of at least one public or private blockchain system
  • Knowledge of source control management systems (git)
  • Strong understanding of security principles and networking
  • Ability to work on large multi-team projects with a high level of independence
  • Be open to receiving feedback

Authoreon - Full Stack Developer

Full Stack Developer

Authoreon Munich, Bavaria, Germany

The Full Stack Developer will have the opportunity to work on new projects as well as to develop new features on existing ones. The ideal Full Stack Developer should be comfortable working with multiple teams and communicating with executive level staff.


  • Freedom to choose your own schedule and choose from a variety of hourly, part-time, and full-time projects
  • Access to a thriving, collaborative community of talented peers
  • Competitive compensation
  • TBD

Responsibilities for the Full Stack Developer:

  • Design and develop web applications for internal and external clients
  • Work closely with internal and external teams
  • Utilize Senior individuals to gain training and mentorship

Technical Requirements for the Full Stack Developer:

  • 2+ years of PHP & Java development experience
  • 1+ year of Angular experience
  • Experience with JavaScript, HTML, and CSS

General Requirements:

  • Ability to learn and use a wide array of open-source technologies and tools
  • Intimate experience with writing highly secure software
  • Knowledge of source control management systems (git)
  • Strong understanding of security principles and networking
  • Ability to work on large multi-team projects with a high level of independence
  • Be open to receiving feedback

Data Light - Senior Front - end developer

Senior Front - end developer

Data Light Moscow, Moscow, Russia

Dynamic fast growing project with international ambitions is looking for Front-end developer.

Our team creates a unique platform of crypto assets data analysis for professional investors. We make available, easy understandable tools to optimize and automate investment strategies.

Key responsibilities:

  • Constantly search for optimal technology and architecture solutions, develop platforms functionality;
  • Create API platform that uses WebSocket for quick communication between server and client;
  • Front-end development using JavaScript (React, CSS Modules)

We are looking for a professional, who is eager to work with a complex system and guarantee quality coding.

What do we require?

  • Front-end development experience with practical usage of WebSocket technology;
  • Strong proficiency with JavaScript, HTML and CSS;
  • Experienced with React;
  • Knowledge of TypeScript, Redux;
  • Knowledge of Webpack;
  • Proficient understanding of code versioning tools, such as Git;
  • Basic principles knowledge of HTTP.

Will be considerate as a strong plus:

  • Understanding of BEM methodology;
  • Experienced with SCSS;
  • Experience in working with highly loaded projects

What we offer you:

  • Working experience in one of the hottest industries
  • Passionate and driven colleagues
  • Zero bureaucracy
  • Unlimited opportunities for professional and career growth
  • Working along with the strong team, solving challenging problems
  • Competitive salary, performance-based bonuses
  • Cozy and comfortable office, conveniently located in 5 mins walk from Okhotniy Ryad metropolitan station, Moscow city center.

Interested in this position? Apply Now!

KOMODO - Full Stack JavaScript Blockchain Developer

Full Stack JavaScript Blockchain Developer

KOMODO Sliema, Sliema, Malta

We are looking for a Full Stack JavaScript Blockchain Developer to join our Development Team.

If you are a full stack developer with JavaScript running in your veins. If you love using Node.js, React, Meteor, Electron for your Blockchain applications we want to hear from you asap.


  • Strong working knowledge in JavasCript, Node.js and a background in Blockchain are required;
  • React, Meteor and Electron are a big plus;
  • Knowledge in cryptocurrency wallets, explorers and dapps are a big plus;
  • Team player and good communication skills in English (work language);
  • Ability to learn fast and independently; - Developer Relations Advocate

Developer Relations Advocate Blacksburg, Virginia, United States of America

As a Developer Relations Advocate, you will be working in the Developer Relations team and reporting to the Head of Developer Relations. You will be a bridge between community and developers, representing products outwardly to the community and the community inwardly to the internal developers. You will be working closely with our EOS.IO core development team and other internal development teams, communicating the development of products to internal and external stakeholders. You will be contributing and managing content such as tutorials, guides, reference documentation for the EOS.IO Developer Portal and other products communication channels. You will also work with a wider Developer Relations team, helping to strategize development of the Developers Portal, increasing the effectiveness of content through analytics and feedback. In addition, you will also work with internal and third party content creators to source quality content, such as blog posts, videos, webinars, etc. and will ensure effective distribution of that content.

This is an amazing opportunity for those who want to be “on the wave” of the latest and coolest tech in the industry.


  • Communicate products developments to internal stakeholders and external community
  • Engage with developers community, provide product feedback to internal stakeholders
  • Create, distribute and analyze developer content – tutorials, developer guides, newsletters, sample apps, client libraries
  • Organize and coordinate marketing engagement activities including social media campaigns, YouTube broadcasts, progress reports
  • Source, distribute and analyze developer content created by external parties
  • Identify content and process improvements through analytics and feedback
  • Champion our products in person and online by presenting at conferences, workshops, blogging, videos and other similar activities


  • MUST speak fluent and written English with good presentation and communication skills
  • Experience writing tutorials, guides, API docs, sample apps
  • Experience writing code in C++/JavaScript
  • Strong organizational skills to juggle multiple tasks within the constraints of timelines and budgets with a high degree of business acumen

About LLC LLC is a creator of Decentralized Autonomous Corporations (DACs), a concept introduced by CTO Daniel Larimer in 2014 that empowers open source communities to disrupt existing centralized business models. Currently we, along with others globally, are developing EOS.IO, a revolutionary open-source decentralized blockchain infrastructure that will be used worldwide as the basis for developing countless high-throughput blockchain applications. We are looking for extraordinary technology professionals to join the LLC team in our continuing quest to enhance, refine and scale EOS.IO for our rapidly expanding developer community.

Request Network - Back-end Developer

Back-end Developer

Request Network Amsterdam, 07, Kingdom of the Netherlands

We are looking for a Back-end developer who has a strong interest in blockchain technology, open-source, decentralization, security, and testing. You can work autonomously, have a strong integrity and are up for the challenge to build a more efficient future.

You will join the Request Network Foundation team, and specifically the Protocol Team, which is part of the YCombinator network. We share strong values and have been working together for several years.


  • Develop the Request Network protocol by adding new features, new currencies and improve scalability through research on Plasma and Tendermint
  • Implement and improving our JS library, helping support our nodes architecture - Help educating our community about how to build on Request
  • Contribute to a decentralized payment protocol built on the blockchain


  • Passionate about creating and releasing projects, as well as learning new languages - Be able to identify relations between parts of complex projects
  • Be able to demonstrate a deep understanding of the blockchain architecture
  • Hold a Master's in computer science or an equivalent field (STEM)
  • Proven analytical and proactive problem solving skills
  • Experience with modern development (ES6, Typescript, NodeJS, etc.). Knowledge of Solidity and Web3JS library is a plus
  • Optional: You have the skills to recreate the Rick and Morty Portal Gun and an opinion on how to avoid being trapped into one of the Black Mirror scenarios of the future


This role is based in Amsterdam. Remote work will be partially possible after a while.

Hedera Hashgraph - Web Developer

Web Developer

Hedera Hashgraph Dallas, Texas, United States of America

About Hedera Hashgraph: We are a fast-growing company built around a revolutionary technology — the hashgraph consensus algorithm. Hedera Hashgraph is well-suited to become the world’s first mass-adopted distributed public ledger because it is blazing fast, highly secure and ensures fairness. We are on a mission to create a trusted and empowered digital future for everyone; a cyberspace where you work, play, buy, sell, create, and engage socially; where you have safety and privacy in your digital communities; where you feel confident when interacting with others... …we envision an internet where you — not a few large corporations — own and control your information. Hedera is global, ambitious and fast-paced. We balance our enthusiasm and mission with a measured approach to risk. We are well capitalized and looking to hire dedicated, collegial, hard-working, talented people to help achieve our vision. Join us and say, “Hello future.” Location: Dallas // London // Remote About The Role: You will be instrumental in an impactful, early stage company. Working as part of a small, but quick-moving team, you will be responsible for building, maintaining, and updating all of the web-related assets of Hedera, such as Key Duties: Consistently ship new versions and updates to all of our web properties , Maintain and document a variety of codebases , Help reach marketing team and company KPIs, such as monthly active users on the website portal Qualifications, Experience and Attributes: , Keen attention to detail , An eye for design is appreciated, but not required , An effective written communicatory of The ability to effectively communicate information and ideas in written format , Superior time management , Works well in supporting a remote team , Works well across stakeholders and teams: marketing, design, events, product , A great ability to identify potential negative or crisis situation and apply conflict resolution principles to mitigate issues , Proficient in HTML, CSS, & JavaScript , Experienced with React , Exposure to SCSS , Git , PHP , Craft CMS , Laravel Forge , Amazon Web Services (S3) , Interested in: Best practices / Security / Animations / Static site generators (Gatsby, Jekyll) / GraphQL / Styled Components , 3-5(+) years of relevant experience Attributes that will set you apart: , A passion for the distributed ledger technology (DLT) space; prior knowledge of projects and market, with an interest in maturing the industry dialogue around DLTs , Experience at a successful, early stage company , A high-quality, professional portfolio , A history of delivering critical websites on time , A cover letter or social media accounts to get to know you better; we are a distributed company on a mission, but we like to have fun and enjoy our work
Stronghold - Front End Developer

Front End Developer

Stronghold San Francisco, California, United States of America

We are looking for a front end developer who is passionate about beautiful design and flawless implementation. You will be on a team who is building Stellar’s first alt coin anchor and global distributed exchange. You are excited about working with the latest collaborative technologies that include GitHub, Zenhub and Slack. You will be contributing to our codebase that will be used by people around the world. You live and breathe HTML/CSS/REACT.JS and have experience with managing ReactJS state (e.g. flux/redux). You have several years experience building front-end architecture for scale and performance. You like leveraging the power of frameworks and pre-processors but are not reliant on them. You thrive on collaborating with back-end engineers and designers but aren’t afraid to figure out the APIs for yourself. Bonus if you have worked with financial services, transactional, or similar codebases. Highly motivated to break into the Silicon Valley technology scene.
Ledger - Senior Software Engineer

Senior Software Engineer

Ledger Paris, Aude, France

As part of its strong growth, Ledger – a technology leader in digital asset and crypto-security solutions – is looking for a Senior Software Engineer (backend). You will be responsible for developing and scaling a backend application to allow hundreds thousand people to process their transaction in the crypto-currency world. Are you able to develop high performance solutions? Do you have experience in continuous integration? Join our team, one of the world’s leaders in one of the most innovative technology sectors! ** Missions** Develop a technological stack to explore the contents of a blockchain (Bitcoin, Ethereum, Ripple, Monero …). , Optimize the overall performance of the application. , Audit our current technological stack. , Conduct benchmarks to identify bottlenecks. , Creation of the software architecture of the blockchain explorer. , Develop blockchain abstraction technology to easily integrate new crypto-currencies. , Set up monitoring for server applications to detect unexpected failures / behavior. , Set up continuous integration to deploy / test the blockchain explorer. ** Required profile** , Engineer profile with at least 5 years of experience in Java / Scala. , Good knowledge of nix operating systems. , Open source lover (90% of our code is available on Github) , Experience with continuous integration solutions. , Capable of self-training and monitoring of backend-oriented technologies. , Having a strong interest in cryptocurrencies and wishing to work with blockchain technology. , Knowledge of AWS solutions is appreciated.
CryptoBLK - Software Developer

Software Developer

CryptoBLK Hong Kong, HCW, undefined

Job Responsibilities: Develop applications using Blockchain and Distributed Ledger Technologies; , Follow agile development methodology, adapt to changing requirements and meet deadlines. Requirements: , At least 3 years of experience building software products; , B.S. or M.S. in Computer Science or equivalent or experience; , Proficient in one of the programming languages, Go/C++/Java; , Hands-on experience with unit testing framework, automated testing; , Experience with messaging queues is an advantage; , Experience with the AWS or Azure cloud computing platform is a plus; , Knowledge in data security, cryptography, Blockchain, consensus algorithm is a plus; , Passion in learning new technologies; , Passion in producing large-scale systems; , Self-motivated and fast learner; , Strong communication skills.
LATOKEN - C# Developer

C# Developer

LATOKEN Moscow, Moscow, Russia

$2000 - $4000

The LATOKEN team is expanding its cutting-edge exchange for tokenized assets, services and money. We are on the edge of transforming capital markets and money. Thus we are a top target on the internet with upcoming heavy load spikes. We are looking for trading systems engineers who can navigate high intensity challenges to build the core of the new financial system. LATOKEN is looking for developers for Trading products and services (Trading terminal, algorithmic bots, back office etc). Responsibilities Develop desktop applications, connectors and back-end services for interfaces for Trading terminal, algorithmic bots, back office etc. , Maintain scalable high load modules structure , Technical ownership for one of the products, Agile framework Requirements , 5+ years in , Performance culture: passionate to create world changing solutions, take responsibility, prioritize, encourage team to do the best , Good to have most of these: experience in HFT/trading bots/backoffice; WPF, LINQ, TPL etc; REST API, Websockets, JSON; SOLID, KISS; GIT, Node.js; PostgresSQL. Benefits , Competitive salary $2000 - $4000 , Rapid growth and exceptional bonuses , Global product with traction growing 20% weekly , Passionate international team (ex McKinsey, hedge funds etc) , Morning English lessons in the office , Potential relocation option (Singapore, San Francisco offices)
Xapo - Android Senior Developer

Android Senior Developer

Xapo Palo Alto, California, United States of America

Xapo is seeking a Senior Android Developer to join our mobile team. We need someone passionate about Android who is willing to work with first class engineers around the world. This position can be done from anywhere: from your home, or from a co-working space, just anywhere in the world. RESPONSIBILITIES As an Android Developer, you will be building components of our mobile app that will enable thousands of people spend their money through their cellphones. You will help design and build key system services and applications that are revolutionizing the fintech world. We are looking for passionate, enthusiastic and top quality engineers; if you think you have what it takes to help take Xapo to the next level, then come join us! Requirements Education and/or Experience: 3+ years experience in Android development , ‎5+ years of experience in Java or similar language , Experience working with teams and code sharing , Passion for Clean codes, where re-usability, testability and legibility are a must! , Familiarity with agile environment and using tools like git, jira, crashlytics and performance metrics , Familiarity with Pull Request/Code review environments Nice to have skills: , Experience working with Kotlin is a BIG plus , Experience with CI integration, tests and static code analytics , ‎Knowledge of retrofit2, firebase, databinding, butterknife, tracking
cryptoGEEKS OU - Junior Blockchain Developer

Junior Blockchain Developer

cryptoGEEKS OU Tallinn, Harju County, Estonia

Due to our rapid expansion, we are looking for an individual with a sound understanding of Ethereum smart contract development, that wants to be part of a fast growing company in blockchain sector as to maintain our high level of standards. You ideally have some experience in Solidity, javascript and various web development environments. \s\s Responsibilities Help implement and maintain blockchain solutions , Development of Ethereum smart contracts and oracles , Writing, testing, and deploying Ethereum smart contracts and building the System design , Work with API’s and payment gatways , Supporting the development of DApps , Work with partners and vendors in support of ICO rollouts and other various projects , Report directly to the CTO , Remote opportunity available
BOScoin - Blockchain Developer

Blockchain Developer

BOScoin Seoul, Seoul, South Korea

Responsibilities Developing BOScoin (Public Blockchain): development of core blockchain technology development of blockchain consensus protocol blockchain platform technical support Qualifications Experience implementing networking applications using at least one of the follow programming languages, Python, Golang, C, C++, or Rust , Experience implementing applications using SSH, OpenSSL, DSA and other cryptographic theories , Experience participating in Open Source projects, not personal projects; fixing bugs or implementing changes to an existing code base, including writing technical documentation for changes , Working knowledge of Linux as a development environment , Experience working in a fast pasted, decentralized, real world, software development team; not a textbook agile team , Understand the fundamentals of blockchain development and the underlying technologies which power modern cryptocurrency networks , Excellent oral and written communications in a multi-cultural team , Machine learning experience is a plus
BOScoin - Contract Language Developer

Contract Language Developer

BOScoin Seoul, Seoul, South Korea

Minimum qualifications BS degree in a technical field or equivalent practical experience. , 1+ year of experience creating or optimizing compilers and/or toolchains. , General understanding of compilers and other software tools. , Experience with parser generators such as lex/yacc, Antlr or native parser. , Experience with one or more of the following programming languages: C, C++, Java, Go, Python. Preferred qualifications , Knowledge of one or more types of toolchains or compilers including but not limited to: LLVM, Clang, GCC or DSP. , Experience with low-level debugging , Experience with performance/code optimization and/or performance benchmarking. , Experience working on debuggers, especially gdb/lldb , Experience working with assembly languages , MS/Ph.D degree in Computer Science, especially compiler, is a big plus
0xcert - Front-end Developer

Front-end Developer

0xcert Ljubljana, Ljubljana City Municipality, Slovenia

0xcert is looking for a top-flight Front-end Developer with the experience and profile to match, to be the owner of front-end of the products and responsible for making it user-friendly. If you like working on challenging projects, this front-end will be backed by revolutionary solution and you will learn how to develop it in a fast and scalable manner. At 0xcert, you will: Build intuitive and practical web interfaces for our customers, , Craft elegantly simple, reusable styles and components, , Manage our front-end framework to make it more responsive, , Launch features that strengthen our platforms' user communities, , Work on the latest technological revolution, , Be a decision maker in the product architecture. You have: , Front-end Developer experience in JavaScript, TypeScript, VueJs, and NuxtJS, , Flexibility to adapt to the needs of massive growth and rapid evolvement of our business environment, , A sharp eye with strong understanding of requirements beyond written word, , Innovative and open-source orientated mindset. * We offer:** , A competitive salary – if we are impressed with you and your work, we'll accommodate your expectations, , Experience in the emerging blockchain technology ecosystem; prior blockchain experience *not required, , Front-and-center participation in networking, , A relaxed working environment, full of open-minded and fun-loving young people.