Critical Engineering · Payments · Security · AI

Secure Software Engineering for Critical Systems, Payments and AI

We build scalable, secure and intelligent solutions for fintechs, technology companies and critical operations.

Payment Systems
PCI DSS Security
AI & Automation
Secure Android
Cloud Architecture
High-Scale APIs

Specialties

Technical depth where it matters

We are not generalists. Each specialty reflects years of critical production projects.

Payment Systems

ISO8583, multi-acquiring, transaction routing and financial backend.

Mobile Security

mTLS, SSL Pinning, Play Integrity and Android Hardening.

AI & Automation

LangChain, autonomous agents and enterprise automation.

Scalable Architecture

Microservices, messaging, observability and cloud.

Compliance & Security

PCI DSS, MPoC, encryption and HSM.

Have a technical challenge?

Talk to a specialist and find the right solution for your system.

Schedule Consultation

Portfolio

Critical Projects in Production

Systems that process payments, protect data and automate real operations.

Payment Gateway

Payment Gateway

ISO 8583 message processing with transactional routing to multiple acquirers.

JavaSpring BootPostgreSQLHSM
Test Automation

Test Automation

Automation solution to increase reliability and reduce delivery time in software validation.

PythonPytestCypressJUnit
AI Agent Automation

AI Agent Automation

Agents that connect systems, make decisions and execute actions based on real-time data.

Pythonn8nChatGPT

Ready to build something solid?

Schedule a free consultation and see how APCosta can solve your business's technical challenges.

APCosta — Critical Software Engineering, Payments & AI