Senior Infrastructure & Cloud Spend Manager

Mimecast; Lexington (VA); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Mimecast is seeking a Sr Infrastructure & Cloud Spend Manager in Lexington, MA (hybrid onsite) to own end-to-end financial visibility for cloud and infrastructure spend. You will partner with Engineering, Product, and Procurement to strengthen forecasting, drive cost optimization, and inform strategic decisions across AWS, Azure, GCP, data centers, and colocation.

You will build scalable cost-management capabilities and dashboards, report to the VP of Product Finance & Corporate Development, and

Qualifications

• Bachelor’s degree in Finance, Accounting, Economics, or a related field.
• Strong understanding of cloud infrastructure cost drivers and pricing models across AWS, Azure, and GCP.
• Experience operating in a PE-backed or high-growth environment with an emphasis on EBITDA-focused cost management.
• Demonstrated expertise in FP&A, cost and financial analysis, or FinOps, with the proficiency and autonomy to own complex infrastructure spend in a SaaS or cloud-native technology environment.
• SQL proficiency and hands-on experience with Snowflake or a similar data platform is preferred.
• Excellent communication and business-partnership skills, including the ability to turn technical cost drivers into clear financial narratives for non-technical stakeholders.
• FinOps Certified Practitioner certification, or willingness to obtain it, is preferred.
• Advanced Excel and financial modeling skills, with the ability to analyze large, complex datasets and translate findings into actionable recommendations.
• Experience with FinOps tooling such as CloudHealth, Cloudability, Kubecost, or native cloud cost-management tools is preferred.

Responsibilities

• Own end-to-end financial visibility and accountability for cloud and infrastructure spend.
• Partner with Engineering, Product, and Procurement to improve forecasting discipline, drive cost optimization, and inform strategic decisions.
• Build scalable infrastructure cost-management capabilities in a PE-backed growth environment.
• Lead monthly, quarterly, and annual forecasting for cloud and infrastructure spend, linking usage trends to roadmap, customer growth, and capacity plans.
• Support annual budgeting and long-range planning for infrastructure cost lines with variance analysis.
• Identify, quantify, and drive cost-optimization opportunities, including reserved instances, savings plans, rightsizing, and architecture changes.
• Evaluate vendor contracts and commitments and support negotiations with data-driven cost and usage analysis.
• Champion FinOps tooling and dashboards for Finance, Engineering, and executives.
• Act as trusted advisor to Engineering leadership on financial implications of architecture and infrastructure decisions.
• Develop a rolling infrastructure spend forecast adopted by leadership within six months and drive measurable cost savings.
• Contribute to broader team goals around cost discipline and EBITDA impact.

Skills

cloud cost management

FP&A

FinOps

SQL

Excel

financial modeling

data storytelling

stakeholder management

cost optimization

Education

Bachelor's degree in Finance, Accounting, Economics, or related field

Tools

Snowflake

CloudHealth

Cloudability

Kubecost

Job description

• Product & Engineering Finance is looking for a Sr Infrastructure & Cloud Spend Manager to own end-to-end financial visibility and accountability for cloud and infrastructure spend
• You’ll partner closely with Engineering, Product, and Procurement to strengthen forecasting discipline, drive cost optimization, and inform strategic decisions
• Cloud and infrastructure spend represents one of Mimecast’s most significant and fastest-growing cost lines
• This is a highly visible individual contributor role reporting to the VP, Product Finance & Corporate Development and based in our Lexington, MA office (hybrid onsite schedule)
• You’ll have the opportunity to build scalable infrastructure cost-management capabilities in a PE-backed environment focused on growth and margin performance
• Serve as the primary Finance owner for cloud and infrastructure spend—including AWS, Azure, GCP, data centers, and colocation—across the business
• Build and maintain a comprehensive cost taxonomy that maps spend to products, teams, and business units, establishing a clear reporting baseline within your first 90 days
• Lead monthly, quarterly, and annual forecasting for cloud and infrastructure spend, connecting usage trends with the product roadmap, customer growth, and Engineering capacity plans
• Support annual budgeting and long-range planning for infrastructure cost lines, delivering clear and actionable variance analysis against budgets and forecasts
• Identify, quantify, and drive cost-optimization opportunities, including reserved instances, savings plans, rightsizing, and architecture changes, in partnership with Engineering
• Evaluate vendor contracts and commitments and support negotiations with data-driven cost and usage analysis
• Champion FinOps best practices and tooling while building dashboards and self-service analytics that provide Finance, Engineering, and executive leaders with visibility into cloud spend and unit economics
• Act as a trusted advisor to Engineering leadership on the financial implications of architecture and infrastructure decisions, presenting findings and recommendations to senior Finance and business leaders
• Develop a rolling infrastructure spend forecast adopted by Engineering and Finance leadership within six months, and drive measurable cost savings and a mature FinOps reporting cadence within the first year
• Contribute to the broader Product & Engineering Finance team’s goals around cost discipline and EBITDA impact

• A bachelor’s degree in Finance, Accounting, Economics, or a related field
• Strong understanding of cloud infrastructure cost drivers and pricing models across AWS, Azure, and GCP
• Experience operating in a PE-backed or high-growth environment with an emphasis on EBITDA-focused cost management is preferred
• Demonstrated expertise in FP&A, cost and financial analysis, or FinOps, with the proficiency and autonomy to own complex infrastructure spend in a SaaS or cloud-native technology environment
• SQL proficiency and hands-on experience with Snowflake or a similar data platform is preferred
• Excellent communication and business-partnership skills, including the ability to turn technical cost drivers into clear financial narratives for non-technical stakeholders
• FinOps Certified Practitioner certification, or willingness to obtain it, is preferred
• Advanced Excel and financial modeling skills, with the ability to analyze large, complex datasets and translate findings into actionable recommendations
• Experience with FinOps tooling such as CloudHealth, Cloudability, Kubecost, or native cloud cost-management tools is preferred