Project Manager

Status
Cayman Islands +1
Full time
Remote
Compensation is not specified
Role
Project Manager
Description

The Arbitrum Foundation is an organisation based in the Cayman Islands that focuses on the development and support of the Arbitrum ecosystem. This ecosystem includes Arbitrum One, an Optimistic Rollup solution that enhances scalability for applications, reducing costs and increasing capacity while maintaining Ethereum's security standards. It also includes Arbitrum Nova, which offers the potential for low-cost fees by utilizing AnyTrust technology, particularly suitable for Social and Gaming applications.

Arbitrum currently stands out as the leading Ethereum scaling solution, holding a significant market share with a wide array of applications on the platform and accounting for over 50% of all rollup liquidity.

We are seeking a dynamic and seasoned Project Manager to become part of the Arbitrum Foundation team. In this role, your primary responsibility will involve supervising the planning, execution, and successful completion of key projects aligning with the Foundation's strategic objectives. You will collaborate with various teams, manage project timelines, and ensure the delivered outcomes meet rigorous quality standards.

Key Responsibilities:

  • Project Planning and Execution: Develop comprehensive project plans outlining the objectives, scope, deliverables, timelines, and resource allocation. Ensure projects are carried out within the defined scope, schedule, and resources.
  • Stakeholder Management: Serve as the main point of contact for both internal and external stakeholders. Regularly communicate project progress, milestones, risks, and issues to stakeholders and senior management.
  • Team Collaboration: Engage closely with cross-functional teams, such as developers, product managers, marketing, and business development, to ensure project success. Foster collaboration and ensure alignment across all project teams.
  • Risk Management: Identify potential project risks and create mitigation strategies. Proactively deal with and resolve issues that could impede project delivery.
  • Quality Assurance: Establish quality control measures to guarantee project deliverables adhere to the required standards and specifications. Conduct periodic project reviews and offer feedback to drive continuous improvement.
  • Documentation and Reporting: Maintain thorough project documentation, which includes project plans, status reports, and post-project assessments. Ensure the accuracy and currency of all project records.

Qualifications:

  • Minimum of 3-5 years of project management experience, preferably within blockchain or technology sectors.
  • Proven track record of effectively managing complex projects from inception to completion.
  • Fundamental understanding of blockchain technology and the Ethereum ecosystem.
  • Strong communication, leadership, and interpersonal skills. Ability to collaborate efficiently with diverse teams and stakeholders.
  • Robust problem-solving capabilities and the capacity to make well-informed decisions under pressure.
  • Possession of PMP, PRINCE2, or Agile certification is a plus.

Diversity, equity, inclusion, and belonging are core values that drive our success at the Arbitrum Foundation. We are dedicated to establishing an inclusive and welcoming workplace for all employees, irrespective of their backgrounds or identities. Our goal is to foster an environment where everyone is appreciated and has an equal chance to excel and prosper. We encourage individuals from various backgrounds to apply and become part of our team.

Skills Required
Avatar
Arbitrum
Company size
Not specified
Location
United States
Description
Not specified
Status

More Full-time Jobs

Show more

Junior/Mid Decentralized Infrastructure Engineer

Full time
Remote
Role:
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements: 
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects) 
Solid Python / Rust / Go skills 
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute 
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Payment in Crypto
9,167-13,750
Monthly
See details

Senior Decentralized Infrastructure Engineer

Full time
Remote
Role:
Build and scale production-grade decentralized infrastructure: compute networks, protocols, storage layers, orchestration for AI workloads, and open-source primitives that power the next generation of agent systems.Skills & 
Requirements: 
4+ years in blockchain infra, distributed systems or high-scale compute 
Deep experience with Rust / Go / C++ and protocols (libp2p, IPFS, custom consensus, GPU orchestration) 
Bonus: self-hosted AI compute, decentralized training or edge inference 
Ship fast, own uptime, love extreme performance and cost efficiency
Salary:
$175,000 – $255,000 USD base + big equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug elite builders straight into our fastest portfolio companies.
This is your chance to build the actual rails for autonomous agents and open digital economy at scale. Zero bureaucracy, maximum leverage.
High risk. Zero apologies.
Payment in Crypto
14,583-21,250
Monthly
See details

Web3 Fullstack Developer

Part time
Remote
🌐 About Us
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.

Junior AI Engineer

Full time
Remote
Role:
Join one of our fast-growing portfolio startups and help build simple AI features. You’ll work with large language models, create basic automations and chat tools, test ideas, fix small bugs, and integrate AI into everyday products.
Skills & Requirements: 
0–2 years of experience (fresh graduates or self-taught welcome) 
Basic Python knowledge 
Interest in AI, LLMs or chatbots (personal projects are a big plus) 
Quick learner who enjoys trying new things 
Good English for team communication
Salary: $95,000 – $135,000 USD base + equity in the startup + full benefits
Description:
Sirex.vc not only invests — we actively help our portfolio companies hire great people. This Junior AI Engineer role is inside one of our AI-native startups. You’ll get real hands-on experience, learn from the best, and build things users actually use — all with full support from the Sirex team.
High risk. Zero apologies.
Payment in Crypto
7,917-11,250
Monthly
See details

AI Agent Engineer

Full time
Remote
Role:
Join one of our high-conviction AI-native portfolio companies and build autonomous AI agents from the ground up. You’ll design agent architectures, implement tool-calling & memory systems, connect them to browsers/shell/APIs, run long-horizon tasks, and ship features that make the product feel alive and truly useful.
Skills & Requirements: 
2–5 years building LLM-powered agents (LangGraph, CrewAI, ReAct, custom frameworks) 
Strong Python skills + experience with tool calling, RAG, vector stores and evaluation 
Bonus: familiarity with browser automation, self-hosted models or decentralized compute 
Fast executor who loves shipping in ambiguity 
Passion for agents that actually do real work (not just chat)
Salary: $160,000 – $230,000 USD base + meaningful equity (in the portfolio company) + full benefits + carry from Sirex network
Description:
Sirex.vc doesn’t only write checks — we actively help our portfolio companies recruit the best people on the planet. This AI Agent Engineer role is inside one of our fastest-moving startups building the next generation of autonomous agents. You’ll get direct support, intros, and operational help from the Sirex team while working on frontier technology that can change how the world uses AI.
High risk. Zero apologies.
Payment in Crypto
13,333-19,167
Monthly
See details