Top Tech Jobs & Startup Jobs in NYC, NY

Lead and scale the accounting function: manage monthly close and financial statements, ensure US GAAP compliance (including digital assets), implement controls and automation, oversee payroll/AP/AR, own digital asset reconciliations, support tax and management decisions, and build and mentor the accounting team.

Develop and maintain backend infrastructure for Arbitrum, focusing on distributed systems, blockchain scalability, security, performance, compiler pipelines, SDK frameworks, microservices, databases, and API architecture. Responsibilities include maintaining Nitro Testnode, reviewing code, supporting stakeholders, collaborating with research and security teams, and driving technical roadmaps for high-performance blockchain systems.

Build, operate, and scale production Kubernetes infrastructure using GitOps and declarative IaC. Design CI/CD workflows, observability, and secure-by-default systems. Troubleshoot networking/storage, participate in on-call rotations, automate operational workflows, and drive postmortems and reliability improvements.

Support end-to-end M&A, strategic investments, fundraising preparedness, business-case development, post-merger integration, and corporate strategy. Build valuation models, conduct market and operating diligence, prepare executive communications, manage deal processes, and develop relationships with blockchain founders and industry leaders.

Conduct code audits and penetration tests across AWS cloud environments, infrastructure, backend applications, and blockchain ecosystem tools. Lead red-team exercises, collaborate with detection engineering and incident response teams, develop offensive security automation, support investigations, research emerging threats, and mentor junior staff. The role requires expertise in AWS attack techniques, binary exploitation, web application security, adversary frameworks, and offensive tooling, with Web3 and blockchain security experience preferred.

Lead and build a high-performing marketing function to craft narratives, drive brand, communications, product marketing, content, partnerships, and campaigns. Mentor teams, define OKRs and operating rhythms, translate technical product value into business outcomes, measure impact, and manage budgets and agency relationships to grow the Arbitrum ecosystem and enterprise adoption.

Lead client-facing technical strategy and developer success for Arbitrum, driving bespoke integrations, onboarding, and adoption. Manage and grow a technical solutions engineering team, collaborate with product, engineering, and research, and translate customer needs into platform improvements and go-to-market plans.

Lead Offchain's financial strategy, institutionalize finance operations, manage digital-asset treasury, drive capital allocation, audit readiness, and scale finance systems while advising the executive team and Board.

As a Senior Backend Engineer at Offchain Labs, you'll tackle complex distributed systems challenges, optimizing performance and contributing to the security and scalability of blockchain technology.

The Head of Enterprise will develop commercial strategies, manage product development, and lead cross-functional teams while driving adoption in the blockchain ecosystem.