Junior API Developer (Integrations and Development)
Full time
Remote
Compensation is not specified
Role
Backend Engineer
Description
About Openmesh and Xnode
Today, a small number of corporations control the majority of the world's data and IT infrastructure, leading to information inequality and various issues. Openmesh is a cutting-edge open-source cloud infrastructure and a global open data network that aims to address this issue by storing global data without intermediaries. It is the largest open web3 data lake, covering a significant portion of the crypto and web3 ecosystem. In the coming years, Openmesh aims to expand its data coverage to include public health and scientific research data.
Openmesh allows individuals to create their own decentralized data clouds, connect globally, share data securely, and reduce deployment costs. It eliminates the need for registration, licensing, and payments, making it an accessible and frictionless option. Openmesh serves as the internet's open data fabric, ensuring universal access and preventing interference from various entities.
Core Product
- Xnode is our flagship product that empowers developers to build decentralized data clouds effortlessly. It provides data connectivity, APIs, and query & analytics engines, significantly reducing the time and cost associated with deploying and operating data clouds.
- Pythia is a powerful analytics & query engine designed to transform raw data into meaningful insights. It allows users to design, build, visualize, and deploy data products.
- Unified APIs serve as a single endpoint for all crypto & web3 data, making data accessible to anyone without any associated costs.
Our Vision
Our vision is to democratize data and mitigate information asymmetry. We recognize the value of reliable data in sustaining webpages, apps, and the internet itself. Access to credible and unaltered information is a fundamental right. Openmesh operates with open-source principles, ensuring that its infrastructure and technology stack are driven by the open-source community, devoid of a singular governing authority.
About the Role
As a Junior API Developer for UnifiedAPIS, you will play a crucial role in developing advanced API solutions for decentralized applications within the specialized framework. In the context of Xnode, you will contribute to the development and maintenance of APIs for the largest open web3 data lake, enabling seamless data connectivity and interaction.
By joining our team, you will have an opportunity to shape one of the world's first large-scale open data clouds and analytics engines. Openmesh is an ambitious global initiative that brings together talented individuals within the tech industry to create open data and infrastructures that will be influential in the next decade or two.
Responsibilities
- UnifiedAPIS Integration: Collaborate with a skilled team to design, develop, and maintain APIs within the UnifiedAPIS framework, facilitating seamless integration for decentralized applications.
- Xnode Data Connectivity: Work closely with cross-functional teams to optimize API solutions within Xnode, enabling efficient data connectivity and interaction across the decentralized data cloud.
- API Security: Implement robust security measures for APIs to ensure data integrity and protect against potential vulnerabilities.
- Performance Optimization: Perform in-depth performance analysis and enhance the functionality of APIs for improved efficiency and responsiveness.
- Documentation: Create comprehensive API documentation for both internal and external use, simplifying integration for developers.
Qualifications
- Bachelor's degree in Computer Science or a related field.
- Proficiency in programming languages such as Python, Java, or Node.js.
- Understanding of RESTful API design principles.
- Familiarity with API authentication and authorization protocols.
- Strong problem-solving and communication skills.
Why Join Us
- Lead the way in reshaping data management and accessibility with a revolutionary product.
- Collaborate with a global community of innovators and thought leaders in the decentralized space.
- Make a significant impact in how data is accessed and utilized worldwide, promoting transparency, efficiency, and democratization.
- Experience a dynamic, challenging, and rewarding work environment, with competitive compensation and benefits.
Please apply with your resume and a cover letter that showcases your passion for decentralized technologies and your vision for the future of Xnode.
Skills Required
Openmesh Network
Website
www.openmesh.networkCompany size
Not specified
Location
United States
Description
Not specified
Milos Bogdanov
Senior Mobile application developer
Full time
Remote
I am looking for a developer who has much experience in Mobile application development.
But specially, candidate should be native in English.
Team communication is very important.
Please bid US only
Thank you
But specially, candidate should be native in English.
Team communication is very important.
Please bid US only
Thank you
Payment in Crypto
UseBlocky
Senior Product Manager ( blockchain )
Full time
Remote
About UseBlocky
At UseBlocky, we are a team of creatives and technologists constantly exploring innovative ideas and building impactful digital products. As a full-service creative agency specializing in Blockchain, Web3 Development, Design, Web & Mobile Development, and Marketing, we help businesses launch, scale, and succeed in the evolving digital landscape.
Position Overview
We are looking for a Senior Product Manager to lead the strategy, planning, and execution of blockchain and Web3 products. You will work closely with clients, designers, blockchain engineers, and stakeholders to define product vision, manage project delivery, and ensure successful outcomes for decentralized applications, smart contract platforms, token ecosystems, and other blockchain initiatives.
Responsibilities
Own the product strategy, roadmap, and delivery of blockchain and Web3 projects.
Gather business requirements and translate them into product specifications and user stories.
Work closely with blockchain engineers to define smart contract, tokenomics, and dApp requirements.
Lead product discovery workshops with clients and stakeholders.
Prioritize features, manage backlogs, and coordinate sprint planning.
Ensure products align with market trends, user needs, and business goals.
Monitor project timelines, risks, and deliverables.
Analyze blockchain industry trends and identify new opportunities for clients.
Define and track product KPIs and success metrics.
Drive successful launches and continuous product improvement.
Required Qualifications
5+ years of Product Management experience in software, SaaS, fintech, blockchain, or Web3 industries.
Proven track record of leading and delivering blockchain, Web3, DeFi, NFT, tokenization, or dApp projects.
Strong understanding of blockchain technology, smart contracts, token standards, and decentralized applications.
Experience managing product roadmaps, backlogs, sprint planning, and cross-functional teams.
Ability to translate business requirements into detailed product specifications and user stories.
Experience working directly with engineering, design, and business stakeholders.
Strong analytical, problem-solving, and decision-making skills.
Excellent communication and stakeholder management abilities.
Familiarity with Agile and Scrum methodologies.
Experience using project and product management tools such as Jira, Notion, Confluence, or Productboard.
Preferred Qualifications
Experience with Blockchain, Web3, DeFi, NFT, or tokenized ecosystems.
Technical understanding of software development processes.
Familiarity with user research and UX principles.
What We Offer
Competitive Compensation — Attractive salary package with performance-based incentives.
Remote-First Flexibility — Work from anywhere with flexible hours and a focus on outcomes rather than schedules.
Professional Growth — Annual learning budget for certifications, courses, conferences, and blockchain-related training.
Modern Equipment & Home Office Support — Company-provided hardware and support for an efficient remote workspace.
Generous Paid Time Off — Flexible vacation policy that encourages work-life balance.
Pay Transparency Notice:
Base salary varies by location (see range below). Total compensation may also include equity and bonus eligibility, and benefits (medical, dental, vision, 401(k)).
Exceptional candidates may be considered above the stated range. Additional performance-based incentives may be available.
Annual base salary range (excluding equity and bonus):
$220,000 - $280,000 USD
At UseBlocky, we are a team of creatives and technologists constantly exploring innovative ideas and building impactful digital products. As a full-service creative agency specializing in Blockchain, Web3 Development, Design, Web & Mobile Development, and Marketing, we help businesses launch, scale, and succeed in the evolving digital landscape.
Position Overview
We are looking for a Senior Product Manager to lead the strategy, planning, and execution of blockchain and Web3 products. You will work closely with clients, designers, blockchain engineers, and stakeholders to define product vision, manage project delivery, and ensure successful outcomes for decentralized applications, smart contract platforms, token ecosystems, and other blockchain initiatives.
Responsibilities
Own the product strategy, roadmap, and delivery of blockchain and Web3 projects.
Gather business requirements and translate them into product specifications and user stories.
Work closely with blockchain engineers to define smart contract, tokenomics, and dApp requirements.
Lead product discovery workshops with clients and stakeholders.
Prioritize features, manage backlogs, and coordinate sprint planning.
Ensure products align with market trends, user needs, and business goals.
Monitor project timelines, risks, and deliverables.
Analyze blockchain industry trends and identify new opportunities for clients.
Define and track product KPIs and success metrics.
Drive successful launches and continuous product improvement.
Required Qualifications
5+ years of Product Management experience in software, SaaS, fintech, blockchain, or Web3 industries.
Proven track record of leading and delivering blockchain, Web3, DeFi, NFT, tokenization, or dApp projects.
Strong understanding of blockchain technology, smart contracts, token standards, and decentralized applications.
Experience managing product roadmaps, backlogs, sprint planning, and cross-functional teams.
Ability to translate business requirements into detailed product specifications and user stories.
Experience working directly with engineering, design, and business stakeholders.
Strong analytical, problem-solving, and decision-making skills.
Excellent communication and stakeholder management abilities.
Familiarity with Agile and Scrum methodologies.
Experience using project and product management tools such as Jira, Notion, Confluence, or Productboard.
Preferred Qualifications
Experience with Blockchain, Web3, DeFi, NFT, or tokenized ecosystems.
Technical understanding of software development processes.
Familiarity with user research and UX principles.
What We Offer
Competitive Compensation — Attractive salary package with performance-based incentives.
Remote-First Flexibility — Work from anywhere with flexible hours and a focus on outcomes rather than schedules.
Professional Growth — Annual learning budget for certifications, courses, conferences, and blockchain-related training.
Modern Equipment & Home Office Support — Company-provided hardware and support for an efficient remote workspace.
Generous Paid Time Off — Flexible vacation policy that encourages work-life balance.
Pay Transparency Notice:
Base salary varies by location (see range below). Total compensation may also include equity and bonus eligibility, and benefits (medical, dental, vision, 401(k)).
Exceptional candidates may be considered above the stated range. Additional performance-based incentives may be available.
Annual base salary range (excluding equity and bonus):
$220,000 - $280,000 USD
Payment in Crypto
UseBlocky
Senior Engineering Manager ( Blockchain )
Full time
Remote
About UseBlocky
At UseBlocky, we combine creativity, technology, and innovation to build exceptional digital experiences. Our multidisciplinary teams deliver blockchain, Web3, mobile, web, and growth solutions for ambitious businesses worldwide.
Position Overview
We are looking for a Senior Engineering Manager to lead the successful delivery of blockchain and Web3 development projects while managing and mentoring engineering teams. You will oversee technical execution, resource planning, engineering quality, and project delivery across smart contract, backend, frontend, and infrastructure initiatives.
Responsibilities
Lead engineering teams delivering blockchain and Web3 projects.
Collaborate with Product Managers and clients to define technical solutions and project scope.
Oversee architecture decisions for smart contracts, dApps, and supporting infrastructure.
Ensure projects are delivered on time, within scope, and at high quality standards.
Establish engineering best practices, security standards, and code review processes.
Manage project resources, technical risks, and development roadmaps.
Mentor and develop engineers across blockchain, backend, and frontend disciplines.
Support hiring, onboarding, and performance management.
Drive continuous improvements in engineering processes and team productivity.
Promote smart contract security, scalability, and operational excellence.
Required Qualifications
7+ years of software engineering experience, including 3+ years in engineering leadership or people management roles.
Proven experience leading the development and delivery of blockchain and Web3 projects.
Strong understanding of blockchain architecture, smart contracts, decentralized applications (dApps), and Web3 technologies.
Experience managing engineering teams across frontend, backend, blockchain, and infrastructure disciplines.
Strong knowledge of software architecture, system design, scalability, and security best practices.
Experience overseeing project planning, resource allocation, risk management, and delivery timelines.
Familiarity with Solidity, Ethereum, EVM-compatible chains, and modern Web3 development frameworks.
Experience implementing Agile development processes and engineering best practices.
Strong leadership, communication, mentoring, and team-building skills.
Ability to manage multiple projects and stakeholders in a fast-paced environment.
Preferred Qualifications
Experience managing blockchain or Web3 engineering teams.
Hands-on experience with cloud platforms such as AWS, GCP, or Azure.
Background in consulting, agency, or startup environments.
Familiarity with DevOps, CI/CD, and infrastructure management.
Benefits & Perks
Competitive Compensation — Attractive salary package with performance-based incentives.
Remote-First Flexibility — Work from anywhere with flexible hours and a focus on outcomes rather than schedules.
Professional Growth — Annual learning budget for certifications, courses, conferences, and blockchain-related training.
Modern Equipment & Home Office Support — Company-provided hardware and support for an efficient remote workspace.
Generous Paid Time Off — Flexible vacation policy that encourages work-life balance.
Pay Transparency Notice:
Base salary varies by location (see range below). Total compensation may also include equity and bonus eligibility, and benefits (medical, dental, vision, 401(k)).
Exceptional candidates may be considered above the stated range. Additional performance-based incentives may be available.
Annual base salary range (excluding equity and bonus):
$220,000 - $320,000 USD
At UseBlocky, we combine creativity, technology, and innovation to build exceptional digital experiences. Our multidisciplinary teams deliver blockchain, Web3, mobile, web, and growth solutions for ambitious businesses worldwide.
Position Overview
We are looking for a Senior Engineering Manager to lead the successful delivery of blockchain and Web3 development projects while managing and mentoring engineering teams. You will oversee technical execution, resource planning, engineering quality, and project delivery across smart contract, backend, frontend, and infrastructure initiatives.
Responsibilities
Lead engineering teams delivering blockchain and Web3 projects.
Collaborate with Product Managers and clients to define technical solutions and project scope.
Oversee architecture decisions for smart contracts, dApps, and supporting infrastructure.
Ensure projects are delivered on time, within scope, and at high quality standards.
Establish engineering best practices, security standards, and code review processes.
Manage project resources, technical risks, and development roadmaps.
Mentor and develop engineers across blockchain, backend, and frontend disciplines.
Support hiring, onboarding, and performance management.
Drive continuous improvements in engineering processes and team productivity.
Promote smart contract security, scalability, and operational excellence.
Required Qualifications
7+ years of software engineering experience, including 3+ years in engineering leadership or people management roles.
Proven experience leading the development and delivery of blockchain and Web3 projects.
Strong understanding of blockchain architecture, smart contracts, decentralized applications (dApps), and Web3 technologies.
Experience managing engineering teams across frontend, backend, blockchain, and infrastructure disciplines.
Strong knowledge of software architecture, system design, scalability, and security best practices.
Experience overseeing project planning, resource allocation, risk management, and delivery timelines.
Familiarity with Solidity, Ethereum, EVM-compatible chains, and modern Web3 development frameworks.
Experience implementing Agile development processes and engineering best practices.
Strong leadership, communication, mentoring, and team-building skills.
Ability to manage multiple projects and stakeholders in a fast-paced environment.
Preferred Qualifications
Experience managing blockchain or Web3 engineering teams.
Hands-on experience with cloud platforms such as AWS, GCP, or Azure.
Background in consulting, agency, or startup environments.
Familiarity with DevOps, CI/CD, and infrastructure management.
Benefits & Perks
Competitive Compensation — Attractive salary package with performance-based incentives.
Remote-First Flexibility — Work from anywhere with flexible hours and a focus on outcomes rather than schedules.
Professional Growth — Annual learning budget for certifications, courses, conferences, and blockchain-related training.
Modern Equipment & Home Office Support — Company-provided hardware and support for an efficient remote workspace.
Generous Paid Time Off — Flexible vacation policy that encourages work-life balance.
Pay Transparency Notice:
Base salary varies by location (see range below). Total compensation may also include equity and bonus eligibility, and benefits (medical, dental, vision, 401(k)).
Exceptional candidates may be considered above the stated range. Additional performance-based incentives may be available.
Annual base salary range (excluding equity and bonus):
$220,000 - $320,000 USD
Payment in Crypto
Christopher Clark
Web Developer
New York City, USA
New York City, USA
Full time
Remote
Hi,
I need a custom ebay like site for bitcoins or using stock credit on it. I need it to let you pay the user verbally, like an agreement you agree on that's it. I need the site fixed so it can be upgraded in the future.
I need it to be fixed so you can upload something to the site and sell it.
All I ask is keep the buying and selling part verbal agreements only. Like sending the user stock credit virtually.
Bid on things on the website
Sell things on the website
Buy things on the website
All I ask is keep the programming simple and the website in a simple form.
I need a website for the web browser and one for the phone web browsers.
If you can put in a custom user admin for it also, then that will be great.
Thank you,
Chris Clark (666 Encryption, CEO)
I need a custom ebay like site for bitcoins or using stock credit on it. I need it to let you pay the user verbally, like an agreement you agree on that's it. I need the site fixed so it can be upgraded in the future.
I need it to be fixed so you can upload something to the site and sell it.
All I ask is keep the buying and selling part verbal agreements only. Like sending the user stock credit virtually.
Bid on things on the website
Sell things on the website
Buy things on the website
All I ask is keep the programming simple and the website in a simple form.
I need a website for the web browser and one for the phone web browsers.
If you can put in a custom user admin for it also, then that will be great.
Thank you,
Chris Clark (666 Encryption, CEO)
Payment in Crypto
Marcus Lindberg
Senior Blockchain Engineer - Low-Latency Execution Infrastructure (HyperEVM / Hyperliquid)
Full time
Remote
we’re looking for a senior blockchain engineer to build low-latency execution infrastructure around hyperevm and hyperliquid-related trading systems.
this is not a frontend or dapp role. the focus is on real-time execution systems, chain-native infrastructure, and market-aware backend engineering where latency, ordering, and state correctness directly impact execution outcomes.
you will work on systems that operate under noisy, adversarial, and highly dynamic conditions, including delayed or missing websocket events, rpc inconsistencies, transaction lifecycle complexity, state desynchronization, retries, and recovery logic.
core responsibilities include building and maintaining realtime blockchain data pipelines, websocket and rpc streaming systems, execution orchestration layers, liquidity-aware routing logic, transaction lifecycle management, and integration with orderbook and market data systems.
we are specifically looking for engineers who think in systems rather than features. meaning understanding how data flows through pipelines, how state evolves over time, how failures propagate, and how to design systems that recover automatically without manual intervention.
areas of work include:
- realtime blockchain data ingestion
- mempool-aware execution flows
- transaction lifecycle handling
- execution sequencing and routing
- websocket and rpc infrastructure
- state synchronization systems
- liquidity and orderbook integration
- performance and latency optimization
you should be comfortable working with distributed systems, asynchronous event processing, and latency-sensitive backend architectures.
strong experience in one or more of the following areas is highly relevant:
- exchange infrastructure
- trading systems
- execution engines
- blockchain indexers
- realtime event systems
- arbitrage systems
- rpc/node infrastructure
- defi backend systems
- low-latency backend engineering
preferred technical stack:
- typescript / node.js
- go
- rust
- python
- postgres
- clickhouse
- redis
- kafka or similar messaging systems
- docker
- linux environments
- evm rpc internals
- websocket infrastructure
ecosystem familiarity:
- ethereum, arbitrum, base, optimism, bsc
- hyperliquid / hyperevm
- foundry
- ethers.js / viem
- geth / erigon / nethermind
- dex and amm mechanics
- liquidity math, slippage, gas strategy, routing logic
this role is not suitable for:
- frontend-only developers
- nft or basic dapp experience only
- tutorial-level web3 developers
- candidates without production systems experience
we value engineers who have built real systems where correctness, latency, and reliability matter under load. we care less about buzzwords and more about concrete systems you have personally built and operated.
ideal candidates can clearly explain:
- system architecture decisions
- bottlenecks and tradeoffs
- failure modes and recovery strategies
- latency considerations in real systems
- production debugging experience
working style:
- remote
- async-first
- low bureaucracy
- high ownership
- engineering-driven team
- direct technical communication
we strongly prefer practical engineering depth over polished presentation. if you have built or worked on systems involving realtime data, trading infrastructure, blockchain execution, or latency-sensitive backend systems, please include details of those systems when applying.
Payment in Crypto