• Provide professional business support and take ownership of simple to moderately complex assignments • Apply technical and operational proficiency to solve financial and business problems • Contribute to the completion of projects and programs, collaborating with internal and external stakeholders • Lead the preparation of cost proposals, ensuring compliance • Develop cost structures and pricing strategies • Independently monitor project budgets ensuring accuracy • Analyze budget forecasts to identify discrepancies and recommend corrective actions • Prepare and review monthly financial reports • Collaborate with Program Managers, Procurement, and Human Resources • Act as a liaison between technical teams, financial operations, and other departments • Lead small teams on lower-complexity project activities, providing guidance and support

• Manage end-to-end client invoicing process • Ensure invoices are accurately generated and tracked against HubSpot deal IDs • Maintain visibility into billing status across all active deals • Track and reconcile vendor invoices • Align costs with deals to determine cost of goods sold (COGS) • Monitor payment timelines and identify overdue accounts • Produce reports highlighting AR risks and aging balances • Help resolve existing billing backlog and invoicing discrepancies • Ensure invoices are correctly routed and delivered • Generate financial reports using QuickBooks and Bill.com • Provide visibility into revenue, costs, and financial health • Identify gaps in workflows, integrations, and data accuracy • Recommend improvements to enhance efficiency and reliability • Collaborate with internal teams and system admins

• Identify and execute borrow and loan opportunities across various asset classes (equities, fixed income, ETFs) using both manual and automated trading strategies. • Leverage SQL, AI tools to streamline daily tasks, develop analytical tools, and automate data-driven decisions, Go experience preferred. • Collaborate with Product, Engineering, and Operations teams to optimize data pipelines, trading systems, operational efficiency and risk controls. • Monitor outstanding loans, recalls, and rates to optimize risk and profitability. • Build and maintain relationships with borrowers, lenders, custodians, and firm client partners. • Assess and manage counterparty, credit, and market risk while staying informed of market developments and regulatory changes. • Work with existing and new securities lending vendors on product development solutions. • Create automated workflow solutions for securities lending trading and operations. • Assist in infrastructure building and business development for tokenized equities financing.

Role Description We are seeking a Finance & Strategy Senior Manager to support Proto, Block’s bitcoin mining hardware business. In this role, you will help scale our deal processes, support self-mining initiatives, and evaluate new venture opportunities across the bitcoin ecosystem. You will partner closely with product, engineering, legal, and business teams to assess complex transactions, build financial models, and drive strategic decision-making as we expand Proto’s platform and operating footprint. This is a hands-on, high-impact role where you will engage directly with external counterparties, including customers and other external partners, while building financial frameworks, sizing opportunities, and evaluating product and deal economics. The ideal candidate combines traditional finance training (banking, investing, or strategy) with bitcoin fluency and the ability to navigate ambiguity in a fast-moving environment. You will report to the Director of Finance and Strategy. You Will - Serve as a strategic finance partner to Proto leadership, providing rigorous financial analysis to support decision-making across hardware, self-mining, and infrastructure initiatives. - Build, own, and maintain end-to-end financial models for Proto programs and ventures, including forecasting, unit economics, and capital allocation across multiple initiatives. - Develop scenario, sensitivity, and investment analyses to evaluate new deals, self-mining expansions, energy partnerships, and operational changes, clearly articulating short- and long-term tradeoffs and financial impact. - Support deal structuring and execution with external counterparties, including pricing frameworks, contract economics, counterparty assessment, and evaluation of new venture opportunities across the Bitcoin ecosystem. - Lead ad-hoc analyses and special projects related to Proto’s P&L, capital deployment, performance metrics, and strategic priorities, in close collaboration with F&S and cross-functional partners. Qualifications - 8+ years of relevant finance experience, with a strong preference for candidates with an investment banking background and subsequent experience in strategic finance, corporate development, or principal investing roles. Experience in fintech, infrastructure, energy, or digital assets is a plus. - Demonstrated ability to lead complex analyses and drive outcomes on cross-functional, high-impact initiatives, particularly in fast-moving or ambiguous environments. - Strong analytical and communication skills, with the ability to distill complex, unstructured problems into clear frameworks, develop actionable analyses, and communicate recommendations effectively to senior stakeholders. - Comfort working with financial and operational metrics, building new KPIs, and navigating large or imperfect data sets to inform decision-making. - Intellectual curiosity and interest in Bitcoin and digital asset infrastructure; prior hands-on experience in the space is beneficial but not required. - Ability to balance rigor with speed, exercising sound judgment while moving decisively in a dynamic, execution-oriented environment. Benefits - Remote work - Medical insurance - Flexible time off - Retirement savings plans - Modern family planning Company Description Block, Inc. (NYSE: XYZ) builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. - Square makes commerce and financial services accessible to sellers. - Cash App is the easy way to spend, send, and store money. - Afterpay is transforming the way customers manage their spending over time. - TIDAL is a music platform that empowers artists to thrive as entrepreneurs. - Bitkey is a simple self-custody wallet built for bitcoin. - Proto is a suite of bitcoin mining products and services. Together, we’re helping build a financial system that is open to everyone.