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All Fractional CTO Services in Cambridge
Advisory Playbook · Cambridge

Fractional CTO to Modernize a legacy technology stack in Cambridge

Your core business has outgrown its legacy software.

An aging monolith, custom agency build, or manual ERP/spreadsheet patchwork is blocking new revenue lines, AI automation, and enterprise customer onboarding.

Principal CTO Execution Blueprint

We architect a phased 90-day strangler-fig modernization roadmap—upgrading critical workflows incrementally with zero disruption to daily operations.

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Zero-Disruption Legacy Modernization for Cambridge Businesses

Established businesses across Cambridge (DeepTech spin-outs, Enterprise AI, BioTech/MedTech software, and venture-backed B2B SaaS.) often run mission-critical revenue on 10-to-20-year-old PHP, .NET, Java, custom ERP, or spreadsheet patchworks. Big-bang "rip-and-replace" IT projects routinely run 2x over budget and jeopardize daily operations.

The Strangler-Fig Modernization Method

  • API Facade Around Your Core System: We unlock data trapped in legacy SQL/ERP databases without breaking daily billing, dispatch, or accounting.
  • Workflow-by-Workflow Cloud Rollout: Ship modern customer portals, mobile field tools, and automated reporting in 45–60 day increments with shadow-mode verification.
  • Compliance & Bus-Factor Elimination: Documenting tribal business logic, automating encrypted off-site backups, and aligning with UK GDPR, Cyber Essentials Plus, ISO 27001, and FCA/NHS security standards.
Representative Execution Pattern

Cambridge Established Multi-Site B2B Operator (28 Staff)

Challenge:Core quoting, order tracking, and invoicing ran on a 14-year-old monolith maintained by a single retiring contractor, blocking API integrations and AI automation.
CTO Intervention:Placed a modern TypeScript/PostgreSQL API layer alongside the legacy database, migrated quoting and customer portal workflows first, and retired legacy modules sequentially.
  • Zero minutes of operational or billing downtime across phased cutover
  • 68% faster order-to-invoice turnaround via automated portal & API sync
  • Eliminated single-contractor existential operational risk

Frequently Asked Questions

Can our staff keep working normally while legacy systems are modernized?
Yes—that is our #1 architectural rule. New cloud modules sync bi-directionally with your legacy database until each team has validated parity in live operations.

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Related Regional Playbooks

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Plain-English Plan

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Pass Investor Tech Checks & Enterprise Security Reviews

Production AI / LLMVC Due Diligence
$4,800 – $9,500 / mo (0% equity)Fractional CTO — Investor & Security Lead
Investor Ready14–21 Days
IP Ownership100% Verified
Equity Taken0%

Likely Architectural Root Cause: Missing system documentation, unchecked security settings, and unanswered compliance forms can stall funding rounds or big customer contracts.

First 14-Day Principal CTO Execution Plan
  • 01Create a clean, investor-ready tech folder (system diagrams, costs, and 12-month roadmap)
  • 02Lock down security, data backups, IP ownership, and SOC 2 / ISO 27001 / GDPR basics
  • 03Join your live investor and enterprise buyer calls directly as your Fractional CTO
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