Personal details
Ricardo S.
Technical skills
About
Staff Systems & AI-Assisted Full-Stack Engineer
Design and build cloud-native backend platforms using TypeScript, Node.js, NestJS, Python, AWS, microservices, event-driven architectures, and distributed systems, delivering scalable, resilient, and secure applications for high-traffic production environments.
Lead the architecture and implementation of third-party integrations, including payment gateways, 3PL logistics, OpenAI, IBM Watson, Google AI services, Stripe, Adyen, PayPal, Google Maps, OpenStreetMap, and enterprise SaaS platforms, reducing integration time by approximately 30% while improving reliability and operational efficiency.
Engineer high-performance backend services through query optimization, caching strategies, asynchronous processing, and security hardening, achieving response time reductions of up to 80% while improving resilience against traffic spikes and infrastructure failures.
AI-Assisted Engineering Workflow
Leverage AI agents throughout the software development lifecycle to accelerate architecture design, implementation planning, legacy code analysis, refactoring, code review, automated documentation, security assessment, test generation, debugging, and business rule validation. Use LLM-assisted workflows to improve development velocity, reduce repetitive engineering tasks, and support higher-quality software delivery while maintaining human technical oversight, improving automation efficiency by 40% and cutting manual intervention by 50%.
Work Experience
Founded and operated a software consultancy delivering custom software, enterprise integrations, and digital platforms for government agencies and small-to-medium businesses.
● Designed and architected web-based platforms spanning CMS, ERP, CRM, accounting, inventory, healthcare, e-commerce, public administration, and business automation.
● Led software projects end-to-end, from requirements analysis and solution architecture through implementation, deployment, and production support.
● Built high-volume transactional systems, workflow engines, automation platforms, reporting solutions, and business intelligence applications.
● Delivered integrations with payment gateways, ERP and CRM systems, government platforms, mapping services, authentication providers, and third-party enterprise solutions.
● Worked across software architecture, backend and frontend development, infrastructure, DevOps, information security, database design, project management, and technical leadership.
● Introduced engineering practices including CI/CD pipelines, automated deployments, performance optimization, security assessments, and scalable system design.
● Continued operating the company as the legal entity for independent consulting engagements and software development contracts.
Modernized high-traffic gaming systems and developed backend integrations with external gaming-platform providers.
● Built integrations with providers including BetBee, SoftSwiss, and Alea Play to process betting, prize, and campaign information.
● Designed NestJS and TypeORM microservices supporting partner APIs, front-end applications, Discord integrations, and real-time WebSocket communication.
● Reworked PHP services and optimized MySQL queries, significantly reducing response times for critical endpoints.
● Introduced Redis caching to reduce database load and improve system performance during high-traffic periods.
● Conducted server-load assessments and implemented measures to improve scalability and operational resilience.
● Strengthened platform security against denial-of-service, distributed denial-of-service, and abusive traffic patterns.
● Standardized development environments using Docker and Stubby mock servers.
● Expanded automated testing through Jest, K6, Postman, Swagger, and unit, integration, and end-to-end testing practices.