Mission-critical systems that keep running while they evolve

Stories that show what our approach looks like once it reaches production.

Insurance · Galicia Seguros

New digital capabilities without replacing the platform

Legacy Modernization

APIs
Microservices
Core
CRM
Payment methods
Messaging

Conceptual diagram

APIs and microservices as a common layer: legacy components migrate progressively.

See context, scope and outcome

The context
Evolving digital channels and processes (claims, collections, policies, endorsements and self-service) within a complex ecosystem of systems and integrations, while legacy components remained in operation.
What we did
We developed and integrated APIs and services for business processes; integrated core systems, CRM, payment methods, messaging and digital channels; and progressively migrated legacy components toward API- and microservices-based architectures.
What changed
Functional evolution of channels and processes moved forward in parallel with technology modernization, adding new capabilities without requiring a full replacement of the existing platforms.

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Healthcare · Hospital Alemán

Two portals, one platform

Product & Platform Engineering
Legacy Modernization

Angular
Node
Microservices
OKD
Integrated monitoring

Conceptual diagram

One web and mobile platform: a unified Angular front end and Node microservices on OKD.

See context, scope and outcome

The context
Two portals, one for health-plan members and one for external patients, with different technologies, functionality and architectures, used by thousands of people.
What we did
We built a unified Angular front end, migrated the back end to Node microservices on OKD, added differentiated logic for members and external patients, and introduced integrated monitoring without interrupting the existing portals.
What changed
A single web and mobile platform in production that centralizes digital healthcare management for thousands of users with a consistent experience.

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Public sector · City of Buenos Aires · Finance

SIGAF evolves without ever stopping

Legacy Modernization

SIGAF

Conceptual diagram

The same modules evolve incrementally, without interrupting operations.

See context, scope and outcome

The context
SIGAF manages the City’s budget, accounting, treasury and asset processes. It is a mission-critical platform that must keep operating while incorporating new requirements from different government areas.
What we did
We provide corrective and evolutionary maintenance, incident resolution, improvements and new capabilities in coordination with the different areas of the City Government.
What changed
Operational continuity and incremental evolution, expanding SIGAF’s functional scope and strengthening its role in the City’s financial and asset management.

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More mission-critical systems we evolved without disruption

Mercel’s experience also includes call-center and branch platforms, member and plan management, integration buses for payments and transfers, patient portals and nationwide medication traceability.

Swiss Medical Group · SGINationwide call-center and branch platform.
Medifé · SUMEMember and plan management core integrated with CRM, electronic billing and ERP.
Western Union / Pago FácilService bus for payments, transfers and KYC.
Ministry of HealthNationwide 24x7 medication traceability.