Sell-side due diligence.

We know exactly what buyers look for in technology DD because we do it for them every week, across jurisdictions.
Preparing Your Technology for Cross-Border Buyer Scrutiny
Pre-Sale Audit
We assess your technology using the same 5P Framework buyers use: People, Process, Product, Protection, and Platform, calibrated to the regulatory and commercial expectations of the likely acquirer.
Remediation Roadmap
A prioritised plan that focuses your effort on the findings that actually affect the deal, calibrated to your transaction timeline and the standards the buyer's jurisdiction demands.
DD Preparation
Coaching your team to present confidently to an international buyer's advisors, preparing data room materials, and rehearsing the questions that cross-border DD teams typically ask.
You Are Selling Your Company. We Help You Pass Technology DD.
Your technology is about to be scrutinised by someone whose job is to find problems, and in a cross-border transaction, they will be assessing against standards that may differ from the ones your team has operated under. What they find (or do not find) will directly affect your valuation, the deal terms, and whether the transaction completes at all. We sit on the other side of the table every week, conducting buy-side technology audits for PE and VC investors across European markets. We know the questions because we ask them, we know the red flags because we flag them, and we know the difference between issues that genuinely affect value and issues that look alarming but do not matter. Whether a buyer's team calls it IT Due Diligence, audit IT, or audit tecnologico, we have seen the process from their side. To understand the shape of a typical buyer's report, see our technology DD report template.
“We know the questions because we ask them. We know the red flags because we flag them. And we know the difference between issues that genuinely affect value and issues that look alarming but do not matter.”
The Sell-Side Problem in Cross-Border Transactions
Most companies approaching a sale have never been through technology DD. They do not know what buyers assess, what standards apply, or what findings cause concern. In a purely domestic transaction, both sides at least share the same regulatory assumptions. In a cross-border deal, even that baseline disappears.
A buyer from Germany will assess data protection against the standards enforced by their own Landesdatenschutzbehorde, not just the authority in your jurisdiction. A UK acquirer will expect FCA-grade security controls in a financial services target, regardless of how the local regulator has historically approached enforcement. Employment law differs materially between jurisdictions: notice periods, works council obligations, and restructuring costs can vary by hundreds of thousands of euros. Data residency obligations under GDPR, which in practice are interpreted differently by the CNIL, the Garante, the Dutch AP, and the ICO, become exit-critical when the buyer intends to consolidate infrastructure across borders.
This asymmetry creates surprises. Issues the team considers minor become headline findings. Technical debt managed pragmatically is presented as material risk. Architecture decisions that were sensible when made are flagged as growth constraints. Compliance posture that satisfied the local regulator falls short of the buyer's expectations. These surprises erode trust, give buyers leverage, and slow the deal at the worst moment. Every issue that surfaces during buyer DD could have been identified and addressed beforehand. That is what sell-side DD does: it eliminates surprises.
Why Rational Partners Is Uniquely Positioned
We Conduct the Buy-Side Assessments
We are the firm that PE and VC investors engage to assess the technology of companies they are acquiring, across the UK and Western Europe. Our sell-side assessment is not a generic review with a "readiness" label. It is a simulation of what happens when a buyer's advisor walks through your door, using the same 5P Framework and the same standards. The difference is intent: on the buy side, we find reasons to adjust the price down; on the sell side, we help you fix those same issues first.
We Know What Matters Across Jurisdictions
Not every finding is equal. Some affect the investment thesis or indicate deeper problems. Others look alarming but do not affect value. A sell-side advisor without buy-side experience cannot make this distinction reliably: they either flag everything or focus on the wrong things. We prioritise ruthlessly, informed by what buyers in different markets actually care about. A Nordic acquirer will weight data protection differently from a Southern European one. A German buyer's DD team will assess ISO 27001 and BSI C5 compliance alongside SOC 2 readiness. We know these patterns because we work across these markets.
We Speak Both Languages
Your technology team speaks one language, your deal advisor another, and the buyer's DD team, potentially in a different country, a third. We translate between all three: explaining to engineers what buyers look for and why, telling your advisor what the findings mean commercially, and anticipating how the buyer's team will frame their report. When the buyer's IC sits in Frankfurt, London, or Paris, we know how to present findings in the language their committee expects.
The Pre-Sale Audit
Our sell-side engagement begins with a comprehensive assessment that mirrors what a buyer would conduct. This is not a superficial scan. It is genuine technology due diligence using the same methodology, rigour, and standards, with particular attention to the areas where cross-border transactions create additional exposure.
What Buyers Always Look For
People. Who is in the team, and what happens if key people leave? Buyers assess structure, leadership quality, key-person dependencies, and the gap between the current team and what the business plan requires. In a cross-border context, employment law adds a further dimension: notice periods in Germany can exceed six months for senior staff, French rupture conventionnelle requires negotiation, and restructuring costs vary substantially between jurisdictions. We identify these dependencies and help you address them through documentation, cross-training, or honest conversations about leadership for the next phase.
Process. How does the team build and ship software? Buyers assess development workflows, deployment practices, testing discipline, and engineering maturity. We are pragmatic: not every company needs enterprise-grade CI/CD. But buyers expect the basics: version control, automated testing, deployment that does not depend on one person, and a workflow that supports scaling.
Product. What has been built, and is it fit for purpose? This is where the most material findings emerge. Technical debt is universal. The question is whether it has been managed deliberately or accumulated unconsciously. Buyers distinguish between deliberate trade-offs and systemic debt. We help you identify which debt matters, quantify it, and either fix it or document it credibly.
Platform. Where does the technology run, and is the infrastructure sound? Buyers assess cloud architecture, cost management, disaster recovery, and operational maturity. DR and business continuity planning are among the most common gaps, and among the most straightforward to address. In cross-border transactions, data residency becomes a critical consideration: where data is stored, how it moves between jurisdictions, and whether the buyer's post-acquisition infrastructure plans are compatible with the target's GDPR obligations.
Protection. Is the technology secure and the organisation compliant? Buyers assess penetration testing, access controls, data protection, vulnerability management, and regulatory compliance. Different buyer pools expect different certification standards: ISO 27001 is the baseline across Europe, SOC 2 is increasingly expected by US and UK acquirers, and German buyers may assess against BSI IT-Grundschutz or C5 cloud security standards. No pen testing, production data accessible to all developers, encryption gaps: these feature regularly. Security remediation takes time, so start early.
Remediation Timelines
3-6 Months: Quick Wins
Security hygiene (penetration testing, access controls, encryption). Documentation and runbooks. Process improvements (automated testing, deployment procedures). Disaster recovery planning and testing. Data residency mapping.
6-12 Months: Structural Work
Team restructuring and key-person mitigation through hiring and cross-training. Targeted technical debt reduction. Monitoring and observability infrastructure. Senior engineering hires ramped and contributing. Employment law review for target buyer jurisdictions.
12-18+ Months: Deep Changes
Architecture transformation (monolith decomposition, database rework, platform migration). Cultural transformation in engineering practices. Compliance certifications: ISO 27001, SOC 2, or BSI C5 depending on the likely buyer pool.
The Sales Readiness Roadmap
After the audit, we deliver a prioritised remediation plan: what to fix, in what order, with what investment, and by when. High-impact, short-timeline items come first. Every item includes an estimate of cost, effort, and the commercial consequence of leaving it unaddressed. Where the likely buyer pool spans multiple jurisdictions, we map remediation priorities against the expectations of each.
For companies that need hands-on support, we provide fractional CTO engagement alongside the roadmap. The partner who conducted the assessment stays to drive the improvements: the same person who identified the issues is now accountable for resolving them. We also prepare the technology team for the DD process itself: coaching on how to present confidently, preparing data room materials, and rehearsing the questions buyers typically ask.
The Timeline
Eighteen months before sale: ideal. Time to address everything: architecture, team structure, security, compliance, and the cultural work that turns a reactive technology organisation into a mature one. Every material finding in a buyer's DD report costs you money. Every issue you address beforehand is a discount you avoid. For cross-border transactions, this lead time is particularly valuable: it allows for compliance certification against the buyer's expected standards and resolution of any data residency constraints.
Six months before sale: tight. Architecture changes are largely off the table. Focus shifts to fixable issues: security hygiene, documentation, process improvements, DR, and targeted debt reduction. You can make meaningful progress, but you are prioritising ruthlessly.
Three months before sale: crisis mode. The focus shifts from remediation to mitigation. Document the issues you know about. Build a credible plan for the buyer to execute post-acquisition. Ensure the team can answer DD questions competently. Quick wins still matter: establishing pen testing, improving documentation, and preparing confident responses. The goal is not perfection. It is credibility.
"Sales readiness is ever more important. It can take three to six months to change the people, embed a culture, build a roadmap. To take an organisation that has genuine technology risks and get them to a place where red flags turn to green ones can take a little bit of time.", Founding Partner, Rational Partners
For Companies That Have Already Failed DD
This happens more often than you might expect. A buyer's DD identified material issues, the deal fell through or the price was adjusted, and now you need to fix the problems before going back to market. In cross-border situations, the challenge is compounded: the next buyer may sit in a different jurisdiction with different expectations, meaning the remediation must address a broader set of standards, not just the specific findings of the previous report. We know exactly what was found because we conduct these assessments ourselves. We build the remediation programme, execute it, and prepare a narrative that demonstrates genuine progress: because the next buyer's advisor may have access to the previous report, which means the issues need to be genuinely fixed, not papered over. Our article on what to do when you have failed technology DD sets out the options in detail.
Who This Service Is For
Founders Preparing for a Cross-Border Sale
You built the company, you know the technology, and you want to ensure it does not become the reason a deal falls apart when the buyer's advisors assess against their own jurisdiction's standards. A sell-side assessment gives you clarity on where you stand and a plan to maximise your position.
PE-Backed Companies Approaching Exit
Your investors are preparing for exit and the buyer pool spans multiple European markets. A pre-sale audit gives the board confidence that the technology will withstand scrutiny from whichever jurisdiction the acquirer sits in.
Companies That Have Failed DD
A buyer's DD identified material issues and now you need to fix the problems before going back to market. We know exactly what was found because we conduct these assessments ourselves, across jurisdictions.
Client Testimonials
"No one likes tech DDs. So my team and I were more than surprised to find that Rational Partners was not only easy to work with, but delivered value throughout the process. The final report was exceptionally clear and useful - it's proved a valuable input into our tech roadmap."
Frequently Asked Questions

Whether you are eighteen months out or three months from a transaction, we can help you understand what buyers across European markets will find and build a plan to maximise your valuation.