Technical scope
Capabilities, grouped by the problems they solve
Technologies change; the problems they solve change less. Each group links to the work where it is visible.
Payments & commerce
Payment lifecycles inside commerce platforms: authorization and capture, 3-D Secure, fraud screening, tokenization, post-payment operations and two-card checkout flows.
- Magento / Adobe Commerce
- VTEX
Backend architecture
Server-side systems and APIs across several stacks.
- PHP
- Java (Spring)
- C#
- Node.js (Express)
- Python
- TypeScript
- NestJS
Integrations & distributed systems
Connecting commerce platforms, CRMs, carriers, mobile apps and public-sector systems, where data has to cross system boundaries intact.
- SOAP
- XML
- REST
- VTEX
- Aptos CRM
- Adobe Commerce
Data & search
Relational modelling, persistence layers and search.
- MySQL / MariaDB
- MongoDB
- Hibernate
- Prisma
- OpenSearch
Frontend
User interfaces for web applications and commerce platforms.
- React
- JavaScript / TypeScript
- JavaServer Faces
Infrastructure & delivery
Packaging and serving applications, and the network underneath them.
- Docker
- Nginx
- CentOS
- Networking
Security & reliability
Practices applied to security-sensitive payment flows.
- Idempotency
- Concurrency control
- Forward-only state models
- 3-D Secure
- Tokenization
Hardware & software integration
Software that drives physical devices, such as biometric readers and relays.
- C#
- Biometric readers
- Relay control