For Private Equity firms.
Technology operating partners who support PE firms across the full investment lifecycle, from DD to exit, wherever in Europe the deal sits.
Supporting PE Firms Across the Full Cross-Border Lifecycle
Pre-Deal DD
Technology assessment designed for investment committees making cross-border acquisitions. Four to six weeks standard, two to three weeks for auction situations.
Hold-Period Support
Fractional CTO placement and periodic health checks that give operating partners technology visibility across portfolio companies in different jurisdictions.
Exit Preparation
Pre-sale technology audit that identifies what buyers will find and addresses it before the asset goes to market, calibrated to the regulatory expectations of the likely buyer pool.
Buy-and-Build
Technology integration assessment across acquisitions spanning multiple European markets: platform consolidation, team restructuring, and architecture decisions where employment law and engineering culture differ from one country to the next.
Technology Advisory Across the Cross-Border Investment Lifecycle
Most private equity firms treat technology due diligence as a pre-deal exercise: a report for the data room, referenced at IC and rarely revisited. The issues identified at acquisition then compound quietly through the hold period, surfacing during exit DD as buyer leverage rather than seller opportunity.
In cross-border deals, this pattern is more damaging. Regulatory divergence between jurisdictions, different employment law regimes, and varying engineering cultures mean that problems which would be visible domestically can remain hidden until they become expensive. A fund in Frankfurt acquiring a target in London faces a different technology risk profile than a purely domestic transaction, and the reverse is equally true. Our advisory spans the full lifecycle, from pre-acquisition due diligence through exit, translating every finding into investment language that works for committees in any European capital. For a deeper look at how technology creates value in PE-backed businesses, see our article on unlocking technology value in private equity.
Pre-Deal: Due Diligence That Informs Term Sheets
Due diligence in a cross-border private equity context must inform the investment decision, influence the price, and lay the groundwork for value creation across jurisdictions. Our assessments are built for investment committees and designed to drive action. We evaluate across the 5P Framework (People, Process, Product, Protection, and Platform) and translate every finding into what it costs to fix, how long it takes, and how it affects the business plan. Where regulatory posture differs between the fund's jurisdiction and the target's, we provide explicit commentary on the implications.
What We Look For
Can the technology support the growth thesis? If the business plan assumes doubling revenue in three years, can the platform handle it? In more than half our assessments, we find architecture decisions made at smaller scale that now constrain growth. Always fixable, but the remediation cost and timeline must be reflected in the deal model.
Is the team capable of executing the plan? A technology team that performed well at EUR 20 million in revenue may lack the skills, structure, or leadership to perform at EUR 50 million. We assess team composition, leadership quality, and key-person risk, frequently surfacing senior hires that should be factored into the value creation budget.
What has been hidden or misrepresented? CTOs, like all leaders, have incentives to present favourably. We have the operational experience to distinguish between a team that is genuinely performing and one that is "saying the right words and making big promises" while the reality tells a different story.
What are the regulatory and compliance risks across jurisdictions? A portfolio company may be subject to FCA conduct rules, BaFin reporting requirements, AMF disclosure obligations, CONSOB transparency standards, AFM oversight in the Netherlands, or FSMA requirements in Belgium, depending on where it operates and where its customers sit. We assess whether compliance is genuine or whether risk has accumulated quietly across borders. Data protection obligations vary in practice between the ICO, the CNIL, the Garante, and the Dutch AP, even under the same GDPR framework.
How We Deliver
Standard due diligence runs four to six weeks. For auction situations, we compress to two to three weeks and can deliver findings through structured verbal briefings when speed matters more than documentation. Every report includes an IC-ready executive summary, detailed assessment across all five pillars, a commercially quantified risk register, and a value creation roadmap with timeline and investment estimates.
"The platform everyone was calling 'cloud-native' was actually running on a single physical server in the CTO's garage. That finding changed the entire trajectory of the deal."
Hold-Period: Fractional CTO Placement and Technology Oversight
The period between acquisition and exit is where technology either creates value or quietly erodes it. For PE firms managing portfolio companies across European borders, the hold period carries an additional dimension: ensuring that technology leadership operates effectively within a local context while reporting to an operating partner who may sit in a different country entirely.
Fractional CTO Placement
When a portfolio company needs technology leadership, whether the incumbent is underperforming, has left, or never existed at the required level, we place an experienced CTO from our partner bench. Different markets use different terms for this role: Interim CTO in Germany, DSI de transition in France, CTO ad interim in Italy. The concept is the same: experienced leadership, embedded in the team. Our fractional CTO services page explains how this works in detail, including the dual reporting model that cross-border engagements require. They embed two to four days per week and take operational ownership of the technology function, reporting to the CEO on operations and to the operating partner on strategic progress.
The typical arc: month one, stabilise the team and assess the real state of things. Months two to three, execute the initial roadmap and address structural DD findings. Months four to six, embed sustainable processes and either transition to a permanent CTO or extend. We build capability and design ourselves out of the engagement.
Periodic Technology Health Checks
For portfolio companies that do not need ongoing CTO placement, we offer annual or semi-annual audits that track progress on DD recommendations, identify new risks, and benchmark technology maturity against the value creation plan. These are particularly valuable for operating partners overseeing companies in jurisdictions where they do not have day-to-day visibility.
Portfolio-Level Reporting
For firms wanting a consistent technology perspective across their European portfolio, we provide regular reporting that aggregates technology risk and performance: identifying which companies are on track, which need intervention, and where risk is concentrated, regardless of which country each company operates in.
Exit Preparation: Technology That Withstands Buyer DD
We know exactly what buyers look for because we conduct buy-side DD ourselves. We assess your portfolio company the way a buyer's advisors would, identify the issues they will find, and build a remediation plan before the company goes to market. Our sell-side due diligence service covers this in detail, and our Rational Closedown methodology ensures a structured transition.
Technical debt. Every company has it. Buyers distinguish between deliberate, well-understood debt and accumulated, undocumented debt. We help portfolio companies document it, quantify it, and demonstrate a credible management plan.
Key-person dependencies. If critical knowledge lives in one person's head, buyers will price it. We build the documentation, cross-training, and team structure to mitigate this before a buyer's advisor raises the flag.
Security and compliance gaps. GDPR enforcement varies by national authority, FCA-authorised firms face different expectations from BaFin-regulated ones, and basic security hygiene remains a common finding across every market. These issues give buyers leverage, and they are among the most straightforward to fix given lead time.
Architecture limitations. Platforms built for current scale that will not support the buyer's growth assumptions. The most expensive issue to remediate and the one that requires the most lead time. Start this conversation eighteen months before exit.
Buy-and-Build: Technology Integration Across European Acquisitions
Buy-and-build strategies create a specific technology challenge: integrating multiple platforms, teams, and architectures into a coherent whole. When those acquisitions span different European markets, the challenge compounds. Employment law differs, engineering cultures diverge, data residency obligations vary, and the assumption that two teams doing similar work will integrate smoothly rarely survives contact with reality. This is where EBITDA accretion from operational synergies either materialises or does not.
We support buy-and-build at two levels. Pre-acquisition, we assess target technology with a specific lens: platform compatibility, integration costs for the deal model, and whether the team is additive or redundant. Post-acquisition, we lead or advise on integration: platform consolidation, team restructuring, and the architectural decisions that determine whether the combined entity captures the synergies that justified the deal. Cross-border integration demands particular attention to the human dimension. A development team in Milan does not operate the same way as one in London or Amsterdam, and treating integration as a purely technical exercise is a reliable way to lose the people who make the technology work. H.I.G. Capital has engaged us to support exactly this kind of complex buy-and-build consolidation across their European portfolio. For broader context on how the diligence landscape is evolving across European private equity, see our analysis of the Real Deals Due Diligence Report 2025.
How We Work with PE Firms
The Dual Reporting Model
For hold-period engagements, we operate with operational accountability to the portfolio company CEO and strategic reporting to the operating partner. This gives investors visibility without undermining company leadership. The model is particularly important in cross-border situations, where the operating partner may sit in a different country from the portfolio company and cannot rely on proximity for oversight. It works because we are genuinely independent: we do not take sides, and our only objective is improving the technology function in ways that create value for both parties.
The Relationship Model
Our most productive relationships are ongoing advisory arrangements. The operating partner has a technology advisor who understands the firm's portfolio, thesis, and standards. When a new deal enters the pipeline, whether the target sits in the UK, Germany, France, the Nordics, or Southern Europe, we move fast because we already understand the context. We provide similar portfolio-level support for venture capital firms, calibrated to earlier-stage economics and expectations. Our partners bring direct operating experience in the sectors they assess. In FinTech, for example, our team includes a former CTO who scaled a payments unicorn from 40 to 300 engineers and led the technology evaluation for a EUR 400 million strategic investment. With a bench of over 25 experienced CTOs and CPOs across the UK and Europe, we have the capacity to support multiple portfolio companies simultaneously and the sector breadth to match the right partner to each business.
Client Testimonials
"Rational Partners has established itself as a vital technical advisor to H.I.G. European Capital Partners. Their unique blend of agility and engineering heritage sets them apart. They move beyond standard 'red flag' reporting to deliver commercially focused, actionable strategies."
Frequently Asked Questions
Whether you need pre-deal technology DD on an acquisition target in another European market, a fractional CTO for a portfolio company abroad, or exit preparation that protects valuation across jurisdictions, talk to a partner who understands how technology works across European borders.