How to Prepare Your Startup for a Funding Round — Technical Checklist and 60-Day Plan

Tech due diligence is one of the stages founders prepare for worst. The financials are ready, the traction deck is polished, the pitch deck has gone through 10 iterations — but when an investor asks about system architecture, technical roadmap or delivery metrics, the answer is improvised.

This article is a concrete plan: what to prepare, in what order, and why these specific things affect valuation.

After 30+ DD processes across Poland and Europe, I see a consistent pattern. An investor isn't looking for perfection — they're looking for risk signals and maturity signals.

Risk signals that lower valuation or block a deal: architecture that doesn't scale without a rewrite; no observability (you don't know when the system is down, no alerts, no metrics); critical knowledge in only one person (bus factor = 1); technical debt without awareness or a plan; metrics "told" rather than measured.

Maturity signals that increase valuation: clear architecture with decision documentation; measurable delivery KPIs (cycle time, error rate, uptime SLA); technical roadmap aligned with the business roadmap; a competent tech lead who can talk to DD without the founder in the room.

Days 1–15: Audit and list. Architecture: draw the current diagram, identify single points of failure, assess where the architecture doesn't scale at 10× current traffic. Technical debt: list known debts with estimated repayment costs. Metrics: check whether you have analytics baselines for key metrics. Team: assess bus factor.

Days 16–35: Priority fixes. Focus on what DD will find as red flags: (1) Observability — if you don't have alerts and an uptime dashboard, implementation takes 1–2 weeks. (2) Bus factor — pair the knowledge. (3) Debt blocking scaling. (4) Metrics — make sure you can show a dashboard you actually use yourself.

Days 36–50: Documentation. In the data room, the technical section should include: current architecture diagram, tech stack list with rationale, known technical debt list with prioritisation and plan, 12-month technical roadmap, delivery metrics (cycle time trend, error rate, uptime), tech team org chart with roles and ownership.

Days 51–60: Rehearsal. Run a mock DD with someone external. Typical questions: walk me through a typical release; what would happen if a key engineer left tomorrow; what are the biggest technical risks for the next 18 months; how do you validate that the metrics you're showing are accurate.

"We don't have an API for the key system." Hard to explain how you scale a system you can't instrument. Minimum: health check endpoint, basic metrics.

"Retention metrics came out differently in different tools." That's a red flag for an investor. Before DD — make sure definitions are consistent.

"The technical roadmap only exists in the CTO's head." Every deck needs a written roadmap, even a simplified one. No documentation signals lack of operational maturity.

"The whole team is in one office and one engineer accounts for 60% of commits." Concentration risk. You don't need to solve it before DD, but you need a plan.

How far in advance of a round should you engage technical support? Minimum 6–8 weeks. With a complex stack or significant technical debt — 12 weeks. Engaging a Fractional CTO for a 4–6 week sprint before DD is one of the best ROI investments before a round.

Does an investor always run a full tech DD? Seed and pre-seed: often no formal DD, but the investor does an informal assessment in conversation. Series A and above: there is always formal DD, often with an external CTO or DD firm.

What if DD discovers a serious problem? Better to find and address it before DD than during. A problem found in DD is a red flag. A problem found by you plus a remediation plan is a maturity signal.

Does technical debt automatically lower valuation? No — awareness of the debt and a management plan is sufficient for most investors. What lowers valuation: unawareness of the debt, debt blocking scaling, no plan.