Taxa Network is a privacy-preserving, computationally powerful, highly developable, blockchain agnostic layer-2 infrastructure. By leveraging state-of-the-art trustless technologies, Taxa aims at becoming the universal business logic layer of the blockchain infrastructure, serving the unique needs in DeFi, gaming, supply chain, security and more, and enabling killer apps of Web 3.0 to develop and thrive.

Usability, developability, inclusivity, and reliability are amongst our core values since Day 1. We care about the work we do. We experiment with new ideas and technologies, put the right processes and tools in place to make developers happy and efficient, and sponsor tech talks and coaching sessions to empower everyone to become their best.

Position Description

We are looking for an experienced Software Engineer to work on the SDK and service framework part of Taxas tech framework. The ideal candidate should have experience Python service applications and SDKs, and feel comfortable working on new technologies in a fast-paced startup environment.

Job Duties and Responsibilities:

• Design and build a Python frameworks for the Trustless Service(tService), serving the developers on Taxa Networks
• Design and build software development kits (SDKs) and other tooling for developers using Taxa Network's APIs in the Python ecosystem.
• Interact with our customers through Github, responding to issues and reviewing pull requests
• Participate in software design and code review for all libraries that the team creates
• Implement holistic testing strategies to assert we're delivering a good developer experience, including unit, integration, and end-to-end tests
• Write documentation for the libraries that we create.

Benefits

What We Offer:

• Competitive compensation;
• Flexibility of working from anywhere you want to;

• Opportunity to make an impact to the fast evolving Web 3.0;
• Work with the best minds in research, development, business, and marketing worldwide.

Taxa is proud to be an equal opportunity workplace. We embrace difference, celebrate it, and thrive on it for the sustainable benefit of our team, products, and the entire community.

Responsibilities:

Requirements:

Prometheum is building the first compliant ecosystem for blockchain securities. Blockchain securities are born on our network when a company raises capital on Prometheum’s issuance platform by offering their own Smart Security Tokens (SST). Those SSTs can then be freely traded on our system, where the Prometheum Blockchain tracks transactions for secure clearing and settlement within 24 hours.

This position will join the Issuer Platform team in building tools for investors, Broker Dealers, blockchain validators and other network participants. We are a remote-first team with contributors spread out in the US. This opportunity is for someone with experience working from home and effectively collaborating via modern group messaging and and video conferencing tools.

Job Details

We are looking for a Front-End Engineer who is motivated to incorporate application design with the art of programming. Responsibilities will include translation of design mockups to actual code that will produce visual elements of the application, app performance optimization and code quality, among other duties.

You will work with the product designer to bridge the gap between design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works. You will also work closely with back-end engineers to iron out implementation details for seamless integration with our services.

Responsibilities

• Develop new features and eliminate bugs to enhance the user experience
• Striking a balance between functional and aesthetic design
• Write concise user stories for front-end related tasks
• Build reusable code and libraries for future use
• Ensure the technical feasibility of design mockups
• Optimize application for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end
• Collaborate with other team members and stakeholders
• Utilizing our tech stack and tooling to build new features
• Maintaining brand consistency throughout design

Skills and Qualifications

• Basic understanding of key design principles, and responsive and adaptive design
• Proficient understanding of web markup, including DOM, HTML, JSX, and CSS (in-JS too)
• Basic understanding of server-side CSS pre-processing platforms, such as SASS and SCSS
• Proficient understanding of client-side JavaScript frameworks, including lodash or underscore
• Good understanding of asynchronous request handling, partial page updates, and AJAX
• Good understanding of React, Typescript, Next.js, and GraphQL
• Good understanding of testing tools like Jest and Enzyme
• Good understanding of drawing and rendering tools (e.g. with SVG, Canvas) for charts and visualizations like D3.js
• Basic knowledge of image authoring tools (e.g. crop, resize, size crush)
• Proficient understanding of cross-browser compatibility issues and ways to work around them
• Proficient understanding of code versioning tools, specifically including Git
• Basic understanding of React Higher Order Components and Hooks and where they can be used.
• Degree in Computer Science, Graphic Design or equivalent work experience
• Excellent problem solving skills, enjoys a good puzzle!
• Excellent verbal communication and interpersonal skills
• Bonus for knowledge of tools like Material-UI, Formik, Yup validation, Babel, Webpack

• 7+ years’ experience building, leading and maintaining multi-layer, services-oriented web-facing applications
• Extensive experience of NodeJS and common packages, architectures
• Experience designing, maintaining and expanding APIs via REST, WebSocket and other technologies
• Experience building tool chain applications, agents, services, server and client applications in NodeJS or similar
• Thorough working knowledge (and preferably DBA experience) working with a variety of database, NoSQL and other storage technologies in NodeJS (at least including PostgreSQL and Redis)
• Application (and host) scaling experience with NodeJS
• Some experience building with front-end frameworks (e.g. React, Vue) required
• Full stack application architecture and design experience required (everything from the hardware and network to browser packaging and usability)

Experience with the following is also beneficial:

• NextJS
• Docker (for development and production)
• GraphQL
• Typescript
• Blockchain, cryptocurrency and smart contracts

Responsibilities:

Requirements:

Responsibilities

Requirements

Conditions

Responsibilities:

Requirements:

You will

You have

We love

We Are f2pool f2pool has built the world’s leading cryptocurrency mining pool serving in more than 100 countries. With support for more than 40 proof-of-work cryptocurrencies, and as a top 3 mining pool operator for 20 of these networks, we have played a major part in securing blockchain infrastructure and educating the global community about cryptocurrency mining. We are looking for a graphic designer that is skilled both in the design of marketing materials and user interface designs to help us build the world's best brand and product for PoW and PoS mining. At first most of the work would be related to marketing events and social media campaigns, later we will work on the redesign of our mining pool for the worldwide audience. Locations We are a distributed team with offices in Seoul, Beijing, Shenzhen and Bangkok. So you can choose to work in one of these cities or work with us remotely. About the Role

• Develop concepts and designs for digital and social media marketing, occasionally print designs.
• Work with developers and product team on user interface designs.
• Participate in all aspects of the design process from ideation to final execution.
• Think creatively and develop new design concepts, ideas, and layouts.
• Share work early and often and seek out constructive feedback from others.
• Care deeply about the quality of work with a desire for improvement.
• Execute consistent designs aligned with existing style guides.
• Collaborate with video editors, marketing managers, and other designers.
• Build and maintain design standards and brand guides.
• Work both on graphic designs with marketing team and on user interface designs with product team.

About You

• 4+ years of working experience as a graphic designer or user interface designer.
• Highly proficient in Adobe Creative Suite, specifically Illustrator, InDesign, and Photoshop.
• Highly proficient in digital product design and user interface design in Sketch.
• Great communication skills in English (written and verbal )
• Working knowledge of the digital landscape in media, social, design, and technology.
• Team player and with a proactive work ethic.
• Excellent organizational skills with attention to details.
• Be interested and motivated to learn and grow.

Nice If You Also Have

• Knowledge of user experience design, psychology and related fields.
• Ability to make simple Illustrations.
• HTML/CSS/JS knowledge and basic coding skills.
• Knowledge of blockchain and cryptocurrency.
• Knowledge of Chinese, Korean or any other languages.
• Previous experience of working in remote companies or with remote teams.

We're excited to see your resume along with your portfolio

About the Role

About You

Nice If You Also Have

Responsibilities

Requirements

KNØX is a custodian for cryptocurrencies. We're looking for a talented backend programmer to develop secure and robust components for our core activities: key management, payment processing, and risk transfer.

The tools and systems you build will be part of our core custody infrastructure. You must be able to design and implement software securely and concisely.

To excel at KNØX you must demonstrate exceptional performance across multiple paradigms. You're likely someone who has an eye for details which gives rise to a deep interest in distributed systems, writing bug-free code, and the practice of engineering software.

If you are interested in leading projects from conception to deployment and exploring a problem space without established solutions, we'd love to talk. 

Requirements

• 3+ years of professional programming experience
• Fluency in one of C, Go, or Python
• Fluency in at least one language with a real type system
• Ability to deploy and monitor containerized software in a Linux environment
• Proficiency in English, spoken and written
• Deep knowledge of one of the following:
• Information security
• Networking
• Distributed systems
• Database design and operation
• Embedded systems
• Formal methods

Responsibilities

• Specify and implement controls to ensure the security of our services
• Collaborate with our product development team to specify and implement APIs that front-end implementations will consume
• Research, communicate, and implement the state of the art in secure software

Nice to have

• Degree in computer science or related field
• Experience with financial services or blockchain-based systems
• Enough group theory to be dangerous

Mandate

• Support Product Owner in documenting functional requirements and realise technical diagrams (process mapping, system architecture, system context, workflow, etc.) using Business Process Model and Notation preferably
• Support Business in document Epic / User Stories using storyboarding, task analysis, and user research tasks to capture and develop user stories.
• Support the creation and refinement of a backlog to support the  agile team
• Clearly elicit the acceptance criteria of stories to support Agile (inc. development and test) teams
• Collaborate with developers and subject matter experts in ensuring user stories are developed correctly and meet acceptance criteria
• Ensure the quality of functional specifications developed and quality of System Integration Test before handover to User Acceptance Test (UAT)
• On occasion perform/support system testing
• On occasion creating, reviewing and executing test cases
• Reporting bugs and validating bug fixes
• Working with dedicated QA teams

Requirements 

• Degree in Business, Finance or Computer Science
• Experience in the design and delivery of web and mobile solutions
• Minimum 1-2 years working in a BA role
• Experience working in fast-paced agile/scrum environments
• Proficiency in Atlassian product suite - Jira, Confluence, etc or similar
• Blockchain experiences preferred
• Excellent analytical skills and proficiency in using diagramming tool (such as Visio) required
• IIBA Entry Certificate in Business Analysis (ECBA) and IIBA Certification of Competency in Business Analysis (CCBA) preferred but not mandatory

What we offer:

• You can work remotely from anywhere in the world as long as you work in the time zone close to CET/Europe
• Startup environment
• Working on the cutting edge blockchain and fintech technology project
• Interesting challenges to work on together with other bright minds
• The friendly teamwork atmosphere

We are looking for a senior mobile developer to build a cryptocurrency wallet for Tezos. Experience with blockchain technology is a plus, but enthusiasm and a willingness to learn are enough. We are headquartered in New York City, and although we have some preference for local hires, we will consider remote workers living anywhere.

Technical Requirements
4 years of experience developing native Android applications
2 or more native Android apps launched in the Google Play store, as a solo developer or playing a major role on a team
Full Android stack: Activities, Fragments, Views, Services, Broadcast Receivers, Content Providers, SQLite, etc.
Experience with commonly used Android libraries and SDKs, both from Google and third parties, for networking; persistence; multi-threading; messaging; code reduction; and optimization. (OkHttp, Retrofit, Picasso, etc.)
Experience with complex integrations such as payment processors, banking systems, customer support, etc.
Experience of commonly-used Android testing libraries for both unit testing and functional testing
Experience with TDD and creating clean, testable code
Experience with reactive architectures, MVVM, MVP, data binding, and other common design patterns which cleanly separate business logic from UI
Strong understanding of the Gradle build system
Strong understanding of the Google Play ecosystem, dashboards, beta and release versioning, and developer tools
A strong understanding of REST API Design
Strong understanding of Android Material Design
Experience with Android testing frameworks (JUnit, Mockito, etc.)

Nice to Haves
Experience and / or working knowledge of blockchain development, or distributed systems
Experience with cryptocurrency applications
Functional programming knowledge, such as with Haskell, OCaml, ReasonML or similar languages
Experience with setting up continuous integration and delivery pipelines
Experience in FinTech, including high-security application development
BS in Computer Science, Math, EE, or other applicable degrees

Responsibilities
Build new native Android application written in Kotlin, Java or a mix of both
Work on all aspects of Android development, from the network layer all the way up to the UI.
Help make major architecture decisions and enforce Android best practices
Follow Git best practices, and write clean, readable code, maintaining documentation for other teammates where necessary
Work with a technical Product Manager to help define technical requirements, make estimates, scope tickets and help plan Agile sprints
Work with Design and User Experience team members to make sure that designs are being made with Android's unique challenges (screen sizes, aspect ratios, back button, etc.) in mind.
Collaborate with iOS developers, smart contract developers, and backend engineers on a regular basis

We are looking for a senior mobile developer to build a cryptocurrency wallet for Tezos. Experience with blockchain technology is a plus, but enthusiasm and a willingness to learn are enough. We are headquartered in New York City, and although we have some preference for local hires, we will consider remote workers living anywhere.

Technical Requirements
4 years of experience developing native iOS applications
Worked on 2 or more iOS Apps launched in the Apple App Store, either as a solo developer or as a major contributor on a team
Working knowledge of the full iOS stack: Foundation, UIKit, and your favorite libraries for common tasks
Experience working with common iOS design patterns (MVC, Delegates)
At least one project which integrates an external SDK (payment processor, banking, customer support, etc).
Experienced with the XCTest Framework; ability to write both unit and UI tests
Working knowledge of TDD and ability to write clean, testable code.
Working understanding of either the CocoaPods or Carthage build system.
Strong understanding of common UI paradigms
Strong understanding of REST API design

Nice to Haves
Experience and / or working knowledge of with blockchain development, or distributed systems
Experience with cryptocurrency applications
Functional programming knowledge, such as with Haskell, OCaml, or similar languages
Experience with setting up continuous integration and delivery pipelines
Experience in FinTech, including high-security application development
BS in Computer Science, Math, EE, or other applicable degrees

Responsibilities
Build new native iOS applications written in Swift
Full stack development on iOS (networking, service layer, UI)
Help make major architecture decisions and enforce iOS best practices
Follow Git best practices, and write clean, readable code, maintaining documentation for other teammates where necessary
Work with a technical Product Manager to help define technical requirements, make estimates, scope tickets and help plan Agile sprints
Collaborate with Android developers, smart contract developers, and backend engineers on a regular basis

The Senior DevOps engineer will be responsible for the design, build and maintenance of the Radix Web and Devops platforms hosting infrastructure in a highly available enterprise environment. As well as acting as a mentor and technical escalation point for the team.

As Senior DevOps Engineer you will be responsible for:

• The stability, security and uptime of all RadixDLT networks
• Radix Cloud Infrastructure
• Maintenance of Developer tooling and services (SCM, Build Server, Artifact Server, etc.)
• Monitoring facilities (Prometheus, Grafana) of our infrastructure.
• Automatisation of common developer workflow to improve efficiency of the team.
• Lead and continue to build the SRE/DevOps team at Radix.

The role involves some scripting and some coding (Java) so you need to have a developer mindset/background.

Prior experience with startups and working with agile, cross-functional teams is a plus. In-depth knowledge about DLT or Blockchain technology is not required, but candidates should generally be interested in the technologies poised to transform the way we live and be open to learning deeply about blockchain topics.

REQUIREMENTS

Must have experience in:

• Python/Shell (min 5 years).
• Maintaining Linux/Unix servers and services (min 5 years)
• The ability to solve problems for large distributed systems at various layers of the stack, from networking, system calls to application layer debugging.
• The TCP/IP network stack and tooling (min 5 year)
• HTTP/TLS/PKI (min 3 year)
• Setting up and maintaining High-Available and scalable systems
• Virtualisation and/or Docker (min 2 years)
• Ansible or Salt Stack (min 2 years)
• Atomizing developer workflows (CI/CD)
• Setting up and managing Cloud infrastructure

Must think that:

• Docker and/or other Virtualisation tools are gifts sent from God
• Learning new tech is fun

Must be:

• Cautious and risk aware in conduct

• Goal-oriented with the ability to drive tasks forward and meet demanding deadlines.

Nice to have:

• Experience co-developing and co-debugging with remote teams.
• Open source development track record
• Knowledge of DLT/blockchain.
• Great people skills and the willingness to go above and beyond when collaborating

Benefits:

• Working remotely
• Flexible hours
• Share options
• Working with fantastic team
• Helping to solve an interesting problem
• Making History with new technology that has the ability to change the world

About the role

We are looking for a full-time DevOps Systems Engineer to assist in designing, and implementing, and maintaining bitfish and stake.fish’s infrastructure strategy. 

Location

Seoul, South Korea or Bangkok, Thailand or Remote

Job Responsibilities

• Build infrastructure to monitor, detect and stop attacks in their tracks
• Proactively make suggestions for improving bitfish products and internal processes
• Create and maintain system procedural and technical documentation.
• Conduct system administration activities for Linux servers, which includes routine, proactive daily management of the health, stability and availability of system infrastructure. Activities include proactive monitoring, patch reporting and addressing fall out, security.
• Configure, maintain, and troubleshoot multiple technologies such as IPS/IDS, SIEM, WAF, HSM, packet capture, and network malware detection solutions
• Stay up to date and build on peer-to-peer networking security best practices, and research new attack vectors
• Conduct internal + external penetration testing, and provide remediation supports
• Create, maintain and communicate threat models + risk assessments for all bitfish systems

Requirements

• Working knowledge of risk assessment tools, technologies, and methods
• Experience designing secure networks, systems and application architectures
• Experience setting up and maintaining software in both data centers and cloud environments
• Experience managing server infrastructures with high availability requirements
• Expert knowledge with Disaster Recovery Planning and executions
• Experience administering other security tooling such as IDS, DDoS, SIEM, WAF, HSM, and/or packet capture tools
• Experience protecting against and mitigating real world attacks such as DDoS
• Deep understanding of sockets, full networking stack and Linux security
• Experience building and implementing Kubernetes infrastructure in large production environments
• Knowledge of build automation and CI/CD processes and tools
• Experience in tuning and monitoring databases, message queues, stream-processing technology, data pipelines, and reliable real-time systems is a plus
• Basic understanding of blockchain fundamentals, Proof-of-Stake, Validators, Block Producers and staking pools

Please share with us the biggest security vulnerability you uncovered or exploited in your cover letter.

We want the best and brightest and are happy to accommodate. If you are relocating, we will cover your travel, handle your visa, and help you get acquainted with the new environment.

This job posting is for a blockchain developer. It is expected that candidates can demonstrate senior software engineering experience, including at least 2 years recent experience on blockchain projects.

Candidates with only academic blockchain experience will be considered, but knowledge of technologies and provable working code is essential.

You will be working on a hybrid public/permissioned blockchain in the security token space. More information can be provided to interested and experienced candidates.

It is expected that you have done at least one of the following:

1. Worked in a substantial capacity on a blockchain project at the protocol level where your code has been shipped to a public (or widely used private) network.


2. Worked on more than one distributed application where you have designed, developed and delivered non-trivial smart contracts and supporting application layer systems.


3. Have worked on (non blockchain) distributed systems at an expert level and have developed an understanding of blockchain with some shipped blockchain code.

In addition, you must have:

• Smart contract design, development and prototyping experience (including in Solidity)
• Excellent understanding of blockchain fundamentals
• Worked on blockchain projects for at least 2 years
• Senior engineering experience (7+ years) in a related field

Preferably, you also have:

• Shipped or worked on open source public blockchain networks
• Familiarity (or better) with Rust
• Experience working in more than one smart contract language
• Experience deploying, managing and using blockchain nodes (blockchain ops)
• Experience of cross-chain considerations (e.g. bridging, pegging, locking techniques)
• Familiarity with Node.JS, Go or other contemporary server-side frameworks and languages

(Very) nice to haves:

• Experience with Substrate or Polkadot
• Experience on projects that use hybrid permissioned/public blockchain networks
• FinTech experience (not necessarily blockchain)

Taxa brings performance, privacy and usability to blockchain applications. Taxa's decentralized computing network leverages state-of-the-art hardware-based trusted computing technology to enable a trustless backend service, serving the applications in performance/privacy-centric industries such as analytics, fintech, advertising, AI, identity, healthcare, legal, security, supply chain, etc.

Were looking for talented self-starters to build that cutting edge together. We experiment with new ideas and technologies, put the right processes and tools in place to make developers happy and efficient, and sponsor tech talks and coaching sessions to empower everyone to become their best.

About the Culture

Taxa is the plural of taxon. In biology, a taxon is a group of one or more populations of an organism or organisms to form a unit. Today, "good" or "useful" taxa are ones that reflect evolutionary relationships.

Usability, developability, inclusivity are amongst our core values since Day 1. We care about the work we do, and about our mission to empower the real-world deployment of blockchain technology to develop and thrive. Each of Taxa members contributes to the mission of Taxa and the benefits of the ecosystem members - public chain creators, dApps builders, and miners.

Taxa is proud to be an equal opportunity workplace. We embrace difference, celebrate it, and thrive on it for the sustainable benefit of our team, products, and the entire community.

Responsibilities

1. Build and improve Taxa's decentralized computing network;
2. Develop automated tools, and participate in setting up the technology frameworks of a fast growing engineering team;
3. Participate in the design and implementation of reliable cloud components;
4. Work on integration solutions and other engineering tasks when needed;
5. Work closely with the tech team to co-plan and co-design Taxas product offerings in an agile development process.

Taxa brings performance, privacy and usability to blockchain applications. Taxa's decentralized computing network leverages state-of-the-art hardware-based trusted computing technology to enable a trustless backend service, serving the applications in performance/privacy-centric industries such as analytics, fintech, advertising, AI, identity, healthcare, legal, security, supply chain, etc.

Were looking for talented self-starters to build that cutting edge together. We experiment with new ideas and technologies, put the right processes and tools in place to make developers happy and efficient, and sponsor tech talks and coaching sessions to empower everyone to become their best.

About the Culture

Taxa is the plural of taxon. In biology, a taxon is a group of one or more populations of an organism or organisms to form a unit. Today, "good" or "useful" taxa are ones that reflect evolutionary relationships.

Usability, developability, inclusivity are amongst our core values since Day 1. We care about the work we do, and about our mission to empower the real-world deployment of blockchain technology to develop and thrive. Each of Taxa members contributes to the mission of Taxa and the benefits of the ecosystem members - public chain creators, dApps builders, and miners.

Taxa is proud to be an equal opportunity workplace. We embrace difference, celebrate it, and thrive on it for the sustainable benefit of our team, products, and the entire community.

Responsibilities

1. Build and improve Taxa Network's development standard and developer experience.

2. Design and develop Taxa Networks JavaScript SDK and developer tools.

2. Work closely with Taxas engineering team to co-plan and co-design the product in an agile development process.