Building an agency operations stack from scratch means choosing tools that solve actual problems, not tools that look good in a screenshot. At 10 people, you need systems that handle client work, internal coordination, and financial tracking without requiring a full-time person to manage them. Here is what we would build today.
Project and client management
ClickUp or Notion for project management. ClickUp if your work is task-heavy and deadline-driven. Notion if you need more flexibility in documentation and lighter project structures. Both handle client workspaces, internal wikis, and basic automation. Avoid tools that require extensive configuration before you can start working.
For client communication, keep it simple. A shared Slack channel per active client or email threads in a shared inbox tool like Front. The goal is visibility across your team without forcing clients into your internal tools. Document decisions in your project management system, not buried in chat history.
Time tracking and resource allocation
Harvest or Clockify for time tracking. Harvest integrates well with invoicing and has better reporting. Clockify works if budget is tight. Make time tracking mandatory from day one. You cannot price projects accurately, spot scope creep, or plan capacity without real data on where hours go.
For resource planning, a simple Notion database or ClickUp view showing who is on what project and their availability works until you hit 15 people. Avoid dedicated resource management tools at this size. They add overhead you do not need yet.
Financial operations
QuickBooks Online or Xero for accounting. QBO if you are U.S.-based and want broad accountant compatibility. Xero if you want a cleaner interface and better bank reconciliation. Connect this to Harvest or your invoicing tool to eliminate double entry.
Stripe or PayPal for payment processing. Stripe has better developer experience and more flexibility. Add Wise or Payoneer if you are paying international contractors regularly. Set up automated invoice reminders and make sure your accounting system reflects actual cash flow, not just issued invoices.
Documentation and knowledge management
Your project management tool should handle most documentation. If you chose Notion, you already have this covered. If you chose ClickUp, add a Notion workspace specifically for internal documentation, SOPs, and onboarding materials.
Use Loom for async video communication and process documentation. Record how you do recurring tasks instead of writing lengthy documents. A five-minute Loom explaining your QA process is more useful than a three-page document no one reads.
Integration and automation
Zapier or Make for connecting your agency operations stack. Start with simple automations: new project in ClickUp creates a Slack channel, time entries in Harvest create invoice line items, new client in CRM creates a folder in Google Drive. Build automations as you notice repetitive manual work, not because you can.
At Tensai Design Studios, we see agencies waste weeks building complex automation before they understand their actual workflow. Start manual, identify pain points, then automate. Your process will change in the first six months.
What to skip at this stage
Do not buy a dedicated CRM unless you have an active outbound sales process. A Notion database or spreadsheet handles lead tracking for most 10-person agencies. Do not invest in advanced resource management platforms, dedicated HR systems, or enterprise communication tools. You will outgrow your first agency operations stack around 20 people anyway. Build for now, not for the future you imagine.
Integration points that matter
Your time tracking tool must connect to your invoicing system. Your project management tool must connect to your communication platform. Your accounting system must connect to your payment processor. These three integration points eliminate the most manual work and reduce errors.
Everything else can be manual until the pain is significant enough to justify the setup time and ongoing maintenance cost of an integration.
Practical takeaway
Start with five tools: project management, time tracking, accounting, documentation, and automation. Add tools only when a specific pain point becomes clear. The best agency operations stack is the one your team actually uses consistently, not the one with the most features. Focus on adoption first, optimization later. If you are rebuilding your operations from scratch and want a second opinion on tool choices and integration architecture, Tensai Design Studios works with growing agencies on exactly this kind of systems design.