Opaque technical risk
Nobody can explain what the system contains or what would break under change, a sale, or an audit.
Technical audit · Legacy migration · Modernization
Hugo Teijiz
Migrate your legacy system without stopping growth.
I analyze, stabilize, and modernize critical platforms so they can evolve, raise capital, or change teams without stopping operations.
WhatsAppI do not start by rewriting. First I understand what the system contains, what risk it carries, what logic must be preserved, and the safest transition.
- Systems that became business-critical.
- Startup or large scale: risk matters more than size.
- AI to accelerate. Expert judgment to decide and validate.
The person to call when business-critical software needs to be audited, rescued, modernized, or migrated without freezing growth.
Risk signals
I work with systems that became business-critical — whether they belong to a startup or a large organization.
- Every change takes longer.
- Only one person understands the system.
- The stack is out of support.
- There are no reliable tests or documentation.
- The original vendor disappeared.
- The product grew on an improvised architecture.
- A sale or investment exposes technical risk.
- The company needs AI or new integrations.
- Operations cannot be stopped.
- Nobody can confidently estimate modernization cost.
Problems I solve
Audit, stabilization, modernization, and migration of software that sustains operations, revenue, or compliance.
Legacy that blocks growth
The business must evolve, but every release costs more and fear of breaking production freezes progress.
Loss of ownership
The vendor, CTO, or only developer who understood the code left.
Investment or sale readiness
The technology data room is missing — or will surface findings that stall the deal.
Entry offer: Legacy Risk Scan
The Legacy Risk Scan is a paid engagement with a defined scope. Pricing depends on size, criticality, and how many systems are involved. Investment is confirmed after an initial conversation. Engagements from USD 1,500.
Services
A clear ladder from diagnosis to program — without selling generic hours or factory capacity.
01
Legacy Risk Scan
Entry point to size risk and define the next step with evidence.
- Executive risk summary.
- Dependencies and obsolescence.
- Bus factor and documentation.
- Path recommendation.
02
Technical and code audit
For investment, acquisition, vendor change, takeover, or modernization planning.
- Architecture, debt, and complexity.
- Security, licenses, and testing.
- Prioritized findings.
- Actionable next step.
03
Modernization Assessment & Blueprint
Retain, retire, rehost, replatform, refactor, or rebuild — with sequence, risks, and transition plan.
- Target architecture.
- Data and test plan.
- Cutover and rollback.
- Range estimates when evidence exists.
04
Migration Pilot
Bounded intervention on a representative module, flow, or API to estimate the full program.
- Evidence of real effort.
- Coexistence learnings.
- Basis for waves.
05
Progressive migration
Waves, strangler, coexistence, and controlled cutover — no blind rewrite.
- Prioritized waves.
- Feature flags / dual run.
- Observability and rollback.
06
Modernization leadership
Fractional CTO to govern architecture, vendors, roadmap, and transition.
- Continuous ownership.
- Debt prioritization.
- Reporting to leadership.
How I work
How I work
- 01
Context and criticality
I understand the system, the business, the urgency trigger, and the real cost of failure.
- 02
Evidence
Inventory, dependencies, risks, documentation, and what the code actually does.
- 03
Options
Retain, retire, rehost, replatform, refactor, or rebuild — without rewrite dogma.
- 04
Transition
Waves, coexistence, tests, cutover, and rollback with operational continuity.
- 05
Ownership
When needed, continuous technical leadership until the change stabilizes.
Verified cases
Only experiences with verification and permission are published. Collabai appears as evidence of decision systems and applied AI — not as migration, and not as a lead destination.
Ministerio de Justicia / DNRPA
Sistemas públicos críticos y transformación digital
Experiencia liderando y evolucionando sistemas públicos críticos en el Ministerio de Justicia y la DNRPA, en contextos donde continuidad operacional, trazabilidad, integración y transformación digital eran requisitos centrales.
Role: Responsabilidad técnica (Senior Technical Manager / liderazgo técnico)
VEMO
Ingeniería de producto digital a escala
Productos digitales de escala con ejecución cross-functional.
Role: Engineering Manager
SportManager
Evolución longitudinal de plataforma deportiva LATAM
Experiencia construyendo, operando y evolucionando durante años una plataforma deportiva utilizada en Latinoamérica, enfrentando decisiones de arquitectura, producto, integración y continuidad.
Role: Cofundador
Neta México
Tecnología 0→1 en startup de alto crecimiento
Startup mexicana de alto crecimiento.
Role: Construcción de tecnología 0→1
OrkestCloud
Diseño de plataforma SaaS de modernización operacional
Plataforma SaaS diseñada para integrar y modernizar procesos operacionales de empresas, incluyendo ventas, compras, stock, administración y reporting.
Role: Founder · arquitectura de plataforma y producto
Collabai
Decision systems e IA aplicada
Producto propio de decision systems.
Role: Founder
Evaluación de migración legacy sin frenar el producto
Evaluación de migración legacy sin frenar el producto
Caso metodológico anonimizado: evaluación de migración de una aplicación legacy sin frenar la evolución del producto ni la operación del negocio.
Role: Evaluación técnica / definición de camino
Takeover y estabilización de sistemas existentes (genérico)
Takeover y estabilización de sistemas existentes (genérico)
Experiencia evaluando arquitecturas, tomando control de sistemas existentes y definiendo planes de estabilización, evolución y modernización.
Role: Evaluación y dirección técnica
How the first meeting works
In an initial 30-minute conversation we review context, criticality, the urgency trigger, and whether an assessment is a fit. You do not need to share code or confidential information at this stage.
Useful to prepare
- System or product
- Known technology
- Approximate age
- Criticality
- Main problem
- Current team
- Urgency trigger
- Approximate deadline
What does not happen
- — No free full audit
- — No repository access required
- — No credentials requested
- — No secrets shared
- — No budget promised without diagnosis
FAQ
- Who is Hugo Teijiz?
- A senior technology and product executive in LATAM with 25+ years. Engineering Manager at VEMO, technical leadership at Ministry of Justice / DNRPA, founder of Collabai and other ventures. MBA UTDT. Commercial offer focuses on audit, modernization, and legacy software migration.
- Do you sell developers or hours?
- No. I do not operate as a software factory. The work is diagnosis, transition design, and modernization leadership — with hands-on execution when scope requires it.
- Is Collabai where my leads go?
- No. Collabai is a decision-systems product. Consulting conversion is a Calendly meeting.
- Is migration the same as a rewrite?
- No. First we understand risk and logic to preserve. Full rewrite is an option — not the starting point.
- Do you guarantee zero downtime?
- No. I design transitions with coexistence, observability, and rollback. Continuity is planned; it is not magic.
- What does Ministry of Justice / DNRPA support?
- Experience leading and evolving critical public systems at the Ministry of Justice and DNRPA, with operational continuity, traceability, integration, and digital transformation as central requirements. No full stack-to-stack technology migration is claimed without additional documentation.
- What is the Legacy Risk Scan and what does it cost?
- It is a paid, scoped engagement to size risk. Pricing depends on size, criticality, and number of systems. Investment is confirmed after the initial conversation. Engagements from USD 1,500.
- Do you publish client testimonials?
- Only with explicit authorization (name, role, company, and text). Until then, public evidence is based on verifiable trajectory and documented cases.
- Where is the recruiter profile?
- At /executive-profile and /cv. Those pages sit outside the primary commercial navigation.
- How do I book?
- https://calendly.com/hugo-teijiz/30min — 30 minutes to qualify criticality and fit. No code or secrets at that stage.
If your platform no longer supports the business, let's assess it before a blind migration.
Audit, migration or transformation: the right format depends on stage. We start by understanding the real system.
In an initial 30-minute conversation we review context, criticality, the urgency trigger, and whether an assessment is a fit. You do not need to share code or confidential information at this stage.
WhatsApp