About Arbitrum Foundation

The Arbitrum Foundation is dedicated to scaling Ethereum through cutting-edge Layer 2 solutions. Our flagship product, Arbitrum One, an Optimistic Rollup, enables faster, more affordable transactions while maintaining Ethereum’s security and decentralization. We empower developers to build decentralized applications (dApps) that are both scalable and secure, using Arbitrum chains, which offer flexibility in performance and cost. Our mission is to enhance the Ethereum ecosystem and drive the adoption of Web3 technology by delivering high-performance, open-source blockchain solutions. Arbitrum is already the leading Ethereum scaling solution with hundreds of dApps on the platform and over $13bn TVL.

At the Arbitrum Foundation, we value decentralization, innovation, and community. We are committed to shaping the future of decentralized finance and blockchain technology, and we’re looking for passionate individuals to help us build the next generation of the Web.

Your Role

We are looking for an enthusiastic and skilled Developer Relations Engineer to become a key member of our team. As part of the Engineering team, you will be instrumental in driving the adoption of our Layer 2 solutions by contributing to the ecosystem with workshops, technical contents and building meaningful relationships with developers. At the same time you will be supporting the foundation departments when it comes down to their technical needs. If you stay up-to-date with the latest developments in blockchain technology, particularly in the Ethereum ecosystem and you have a genuine passion for collaborating with developers, we would love to connect with you.

Your Responsibilities

• Developer Engagement: Build and maintain strong relationships with developers, both within and outside the Arbitrum community. Act as a key point of contact for technical inquiries and support.
• Advocacy and Community building: Serve as a passionate advocate for Arbitrum by developing and executing strategies to grow and nurture a vibrant developer community around Arbitrum. Organise meetups, webinars, workshops, and other events to facilitate knowledge sharing and collaboration.
• Contributing: Create and maintain technical documentation, tutorials, and contribute to the open source ecosystem to help developers integrate with Arbitrum seamlessly. Deliver educational content through various channels.
• Feedback Loop: Gather feedback from developers and relay it to our product and engineering teams. Advocate for developers’ needs and priorities within the organisation.
• Collaboration: Collaborate closely with the internal cross-functional teams, including marketing, product management, and engineering, to align developer outreach with our strategic goals.
• Metrics and Reporting: Track and analyse developer engagement metrics to measure the impact of developer relations efforts. Use data-driven insights to refine strategies.
• Assess leads (e.g. grant proposals, product requirement documents, etc)  from a technical standpoint, focusing on the technical team capabilities, architecture and source code and the timeline credibility.
• Contributing back to the ecosystem via open source contributions or the production of other educational materials

What You’ll Need

• You are fluent in one or more general-purpose languages (e.g. Typescript, Python, Go, Rust, Java, etc)
• Fundamentals of Solidity
• Deep understanding of blockchain technology and EVM solutions.
• Strong English communication and presentation skills, with the ability to convey complex technical concepts to diverse audiences.
• Self-motivated, proactive, and able to work independently.
• Excellent problem-solving and troubleshooting skills.
• Bachelor in computer science or equivalent work experience

Nice to have

• Prior experience in developer relations, developer advocacy, or a related role in the tech industry, within the blockchain or cryptocurrency space.
• Demonstrated experience in community building and engagement.
• Prior commercial experience with Solidity
• Exposure to Rust
• Open-source contributor on the EVM space
• You speak another language (e.g. Spanish, Hindi, Chinese, Korean, Japanese)

Arbitrum Foundation Perks

The Arbitrum Foundation’s benefits program is designed to prioritize the health and well-being of you and your family. Our comprehensive compensation package offers a range of benefits for all full-time employees:

• Remote first global workforce
• Industry-leading healthcare insurance
• Home office set-up allowance
• Wellbeing allowance
• Growth / continuing education allowance
• Flexible time off
• Company-issued laptop

The Arbitrum Foundation is committed to a diverse and inclusive workplace and is an equal opportunity employer. We do not discriminate based on race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. The Arbitrum Foundation is committed to treating all people in a way that allows them to maintain their dignity and independence. We believe in integration and equal opportunity. Accommodations are available throughout the recruitment process and applicants with a disability may request to be accommodated throughout the recruitment process. We will work with all applicants to accommodate their individual accessibility needs.

If you believe you’re a strong candidate but don’t meet every requirement listed in the job description, we still encourage you to reach out. We’d love the opportunity to connect and explore how you could be a great fit for the role.

Learn More about The Arbitrum Foundation

• Website
• Twitter
• Telegram
• Discord
• LinkedIn

Type: Full-time in-person Sydney (AU); or, remote Bay Area (US) – office opening soon

Experience: 7+ years, Senior+/Principal/Architect

Compensation: Competitive equity/token + salary

About wh-ai

wh-ai is building the future of knowledge, enabling collaboration of both experts and AI. Our revolutionary platform implements a peer-to-peer dialectic process on a decentralized trustless network where questions are answered and verified by the fittest and most advanced AI agents. We enable a future where we can thrive in novel and abundant organic and synthetic data, expertly verified, with immutable primitives that empower the next discovery on a solid bedrock.

We’ve just closed our first financing round (backed by some super Angels and VCs) and we’re building our strike founding team to launch the public Beta and accelerate core development. Joining now is an opportunity to make an impact in days not years, creating exponential value in the community and equity/token.

The Role

We’re seeking a (Senior+/Principal/Architect) Full-Stack Engineer to lead technical development of our AI-powered verification platform. This is a high-impact role perfect for someone who thrives in a fast-paced startup environment and wants to shape the future of expert + AI verification systems.

As our technical lead, you’ll own the entire stack and shape the team - from React frontend to Node.js backend, AI integrations, and upcoming blockchain Layer 2 implementation. You’ll architect scalable solutions, integrate cutting-edge AI models, and prepare our platform for decentralized blockchain deployment.

What You’ll Do

Technical Leadership

• Lead full-stack development of our React/TypeScript frontend and Node.js/Express backend
• Architect and implement AI integrations using our API and Model Context Protocol (MCP) system supporting OpenAI, Anthropic, Gemini, DeepSeek and other top models.
• Design blockchain Layer 2 integration for decentralized verification and reward distribution
• Optimize performance of our distributed verification network with real-time WebSocket communication
• Implement advanced testing strategies including parallel test execution and comprehensive CI/CD pipelines

AI/ML Integration

• Enhance our autonomous bot system that automatically processes questions and verifications using LLMs
• Develop hybrid human-AI workflows with quality control thresholds and human oversight
• Build AI-powered verification assistance tools for human verifiers

Blockchain Development

• Architect and develop a decentralized solution for integration of tokens, incentives and rewards across L1 and L2.
• Token design
• Implement Proof of Personhood (PoP) verification systems
• Build bridges between traditional web infrastructure and blockchain networks

System Architecture

• Scale our PostgreSQL database with advanced query optimization and connection pooling
• Enhance our real-time communication systems with WebSocket reliability and performance
• Implement advanced security measures including rate limiting, authentication, and data protection
• Design microservices architecture for horizontal scaling

What You Bring

Required Technical Skills

• 5+ years full-stack development with modern JavaScript/TypeScript ecosystems, and Go or Rust or C/C++ for high performance node development.
• Expert-level React/TypeScript with advanced state management (TanStack Query preferred)
• Strong Node.js/Express backend development with real-time systems experience
• Database expertise with PostgreSQL or MySQL, complex queries, and ORM frameworks (Drizzle preferred)
• AI/ML integration experience with OpenAI, Anthropic, or similar LLM providers
• Blockchain development with Solidity, EVM, Ethereum Layer 2 solutions (Polygon, Arbitrum, or Optimism)
• DevOps and CI/CD experience with GitHub Actions, testing frameworks, and deployment pipelines

Preferred Experience

• Open-source project experience
• WebSocket and real-time systems development
• Distributed systems architecture and scaling
• Test-driven development with Jest, React Testing Library, and parallel test execution
• Payment integration with Stripe or similar platforms
• Security best practices for authentication, session management, and data protection
• Performance optimization for both frontend and backend systems
• Layer 2 deployment experience on Base, Arbitrum, or Optimism
• EigenLayer AVS development or validator operation experience
• ZK proof systems and cryptographic verification mechanisms

Soft Skills

• Startup mentality - comfortable with rapid iteration and changing requirements
• Technical leadership - ability to make architectural decisions and guide technical direction
• Problem-solving - skilled at debugging complex distributed systems
• Communication - can explain technical concepts to non-technical stakeholders
• Ownership mindset - takes full responsibility for feature delivery and system reliability