Senior API Developer.
About Openmesh and Xnode:
At present, a small number of corporations control 90% of the world's data and IT infrastructure, which puts trust in them as a disadvantage. This not only has negative effects on businesses, but also affects society as a whole. It leads to social inequality, scandals, polarization, corruption, and can even escalate into war. Centralized data control hampers innovation, raises privacy concerns, and obstructs the free flow of data.
Openmesh is a cutting-edge open-source cloud platform and a global open data network that aims to store significant global data without intermediaries. With coverage of approximately 80% of the current crypto and web3 ecosystem, Openmesh is the largest open web3 data lake. By 2024, our goal is to expand data coverage to include public health and scientific research data.
Openmesh enables anyone to create their own decentralized data cloud, globally connect, securely share data, reduce deployment costs, and automate data cloud setup. The Openmesh Network is a fabric of open data on the internet, ensuring universal access and preventing interference from regulators, governments, corporations, and even its own creators.
Core Products:
Our flagship product, Xnode, is a platform that revolutionizes the creation of decentralized data clouds. Xnode allows developers to build their own decentralized data clouds in minutes, rather than weeks or months. Developers only pay for computing and storage, avoiding licensing and setup fees. Xnode significantly reduces operating costs for data clouds and reduces deployment time by over 95%.
Pythia is an analytics and query engine that converts raw data into actionable insights. This powerful tool enables the design, visualization, deployment, and creation of complex data products.
Unified APIs provide a single entry point for all crypto and web3 data, allowing universal access without any costs or barriers.
Our vision:
Our vision is to democratize data and address information asymmetry on a large scale. Data and information are the most valuable commodities in the world, and without reliable data, the internet cannot function efficiently. We believe access to reliable and unedited information is a fundamental right in a free and democratic society. Openmesh is designed to have no single authority that can alter its data distribution or control. The entire infrastructure and technology stack are open-source, governed by a community.
About the Role:
As a Senior API Developer, you will be responsible for developing advanced API solutions for decentralized applications within the Xnode ecosystem. Your role will involve ensuring seamless integration and interoperability within the Unified API platform.
Your Impact:
- Lead the development of advanced API solutions, focusing on Unified APIs for decentralized applications within the Xnode ecosystem.
- Drive architectural innovations in API design to ensure efficiency, scalability, and seamless integration.
- Implement unified data connectivity solutions that enable decentralized applications to seamlessly interact with Xnode's open web3 data lake.
Qualifications:
- Bachelor's or Master's degree in Computer Science or a related field.
- Extensive experience in API development, with a focus on decentralized applications.
- Proficiency in programming languages such as Python, Node.js, or Go.
- Strong problem-solving and architectural design skills.
- Experience with blockchain technologies.
Why Join Us:
- Lead a revolutionary product that transforms the landscape of data management and accessibility.
- Collaborate within a global community of innovators and thought leaders in the decentralized space.
- Make a significant impact on how data is accessed and utilized worldwide, promoting transparency, efficiency, and democratization.
- Enjoy a dynamic, challenging, and rewarding work environment, along with competitive compensation and benefits.
How to Apply:
Interested candidates should submit a resume and a cover letter demonstrating their passion for decentralized technologies and their vision for Xnode's future.
Senior Blockchain Engineer
Protocol Core: Development and optimization of L2-settlement logic on Solidity/Yul.
Bridge Security: Designing secure cross-chain gateways with protection against double spending and reorgs.
Node Infrastructure: Optimizing the interaction of node validators with the EVM stack.
Gas Engineering: Extreme cost reduction for publishing data in L1 (Deneb/Cancun-ready).
Requirements:
Deep knowledge of Solidity (0.8.20+) and Assembly (Yul).
Experience working with Foundry (Fuzzing/Invariants) and understanding the architecture of OP Stack or Arbitrum Orbit.
Skills of working with indexers (The Graph/Envio) and the RPC layer.
Social media manager
Senior Blockchain Engineer
DApp & Smart Contract Developer (Vesting Platform)
This role is ideal for someone who thrives in fast-moving environments, values clean and secure code, and understands the nuances of blockchain-based application architecture.
Responsibilities
Diagnose and resolve issues in vesting smart contracts and their front-end integrations.
Implement new features and system enhancements to improve UX and overall platform performance.
Maintain smooth interaction between the web interface and deployed smart contracts.
Conduct testing, audits, and deployments across testnet and mainnet environments.
Optimize contract logic for performance, security, and gas efficiency.
Collaborate with our engineering team to identify pain points and deliver stable, secure solutions.
Requirements
Proven experience building full-stack decentralized applications.
Strong proficiency in Solidity, JavaScript/TypeScript, and modern frameworks (Angular, React, or Vue).
Hands-on experience with Hardhat or Foundry for smart contract development and testing.
Familiarity with Ethers.js or Web3.js for blockchain interaction layers.
Solid understanding of Ethereum, Polygon, or other EVM-compatible chains.
Experience integrating wallets such as MetaMask and managing on-chain/off-chain data flows.
Strong debugging skills, attention to detail, and a security-first mindset.
Nice to Have
Experience with smart contract security audits and gas optimization techniques.
Knowledge of Node.js-based backend services or API integration layers.
Previous experience with vesting, staking, or token distribution mechanisms.
Project Scope
This role supports a short-to-mid-term initiative focused on stabilizing and enhancing an existing crypto vesting platform. High-performing developers may have opportunities for ongoing collaboration across additional blockchain and product engineering projects.
Hiring Process
Technical Assessment - Selected candidates will complete a short, clearly scoped technical exercises designed solely to evaluate coding approach and smart contract knowledge.
CTO interview - A final discussion to evaluate technical reasoning, architectural thinking, and team fit. Successful candidates may receive an offer through Contra following this conversation.
Senior Blockchain Developer - Ethereum/PulseChain - GAM3S.GG
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools