Manuel C.

Vozitel develops CRM and contact center solutions that support customer communication and business operations.

• Designed and deployed LLM-based callbot agents to production on a contact-center platform, covering architecture through deployment.
• Developed backend services for the CRM and contact-center platform using PHP, TypeScript, and JavaScript with Angular, and contributed to the migration of selected microservices to Go.
• Root-caused long-standing production issues in a large legacy codebase, including one that had resisted 30–40 hours of investigation by experienced engineers; isolated and resolved the issue in approximately 10 hours.
• Led the platform’s transition to containerized infrastructure using Docker and Kubernetes.
• Introduced AI-assisted development workflows into daily engineering practices, including agents for codebase exploration, test generation, and refactoring.

GIMC provides software engineering and consulting services, delivering enterprise web platforms and digital transformation projects for international clients.

• Led engineering teams delivering enterprise backend and web platform modernization initiatives.
• Turned around a SaaS client’s delivery pipeline by replacing manual nightly deployments with on-demand CI/CD, reducing lead time for changes from 3–4 days to approximately 36 hours and cutting SLA breaches by 50%.
• Re-architected RPC-style APIs into RESTful and GraphQL services, improving scalability, maintainability, and testability.
• Standardized OAuth 2.0 and OpenID Connect authentication across client platforms using industry-standard implementations.
• Established engineering standards covering containerized development, automated testing, and CI/CD pipelines.
• Led Scrum delivery, technical planning, and architectural decision-making while mentoring software engineers.

GIMC provides software engineering and consulting services for enterprise organizations across multiple industries.

• Translated business requirements into technical specifications to support successful software delivery.
• Reviewed application code and coordinated quality assurance across PHP, WordPress, and Laravel projects.
• Managed project scope with clients, converting out-of-scope requests into billable proposals rather than unbilled work.

Tapjoy develops mobile advertising, user acquisition, and monetization solutions for mobile applications and games.

• Owned the migration of an audio ad-serving platform handling approximately 1 million requests per day from PHP/Zend Framework 2 to Node.js.
• Led the technology evaluation, selecting Node.js for its non-blocking event loop and suitability for I/O-bound workloads, and delivered the same traffic volume using a fraction of the original hardware.
• Built and maintained RESTful APIs and backend services in PHP and Node.js for internal and client-facing systems.
• Worked fully remotely in an asynchronous, English-speaking US engineering environment, using automated testing, Dockerized environments, and CI/CD as standard practices.

Boizu was a VoIP startup offering sponsored international calling, funded through an in-house advertising platform.

• Founded and ran the company for five years: built the product, hired and led a 5-developer team, and owned the business side across sales, marketing, and finance.

• Architected the telephony platform on Kamailio and Asterisk, separating SIP signaling from media handling so the system could scale horizontally by adding media nodes.

• Chose PHP/Zend Framework 2 for the backend and upskilled the development team to ZF2 Architect certification level.

• Built an abstraction layer over the Asterisk Manager Interface exposing telephony data directly to backend developers, deliberately removing myself as a single point of failure. Concluded the venture with a successful exit.

Caetano Retail operates automotive retail and dealership management businesses across multiple brands.

• Designed and led the technology for a new car-parts contact center (10 agents, Peugeot and Renault brands): architected the Asterisk/Kamailio telephony platform, integrated the warehouse ERP, and built dashboards and call queues.

• Developed internal business applications supporting sales, inventory, and customer management in PHP and relational databases.

• As Product Manager, turned around a loss-making used-car department: built an online sales funnel, stock and refurbishment tracking, a CRM-integrated selling interface, and a redesigned commission scheme, while reshaping a 6-person sales team.

• Grew sales volume around 1.5x and gross margin nearly 3x, taking the department from losses to one of the group's most profitable; the CEO replicated the model across other dealerships.

Peugeot is an international automotive manufacturer developing vehicles and supporting digital business operations.

• Drove the analog-to-digital transformation of a multi-dealership retail operation.

• Administered the Linux servers the business ran on and built internal PHP web applications replacing paper processes.

• Deployed early WordPress sites, improved the dealer ERP, and automated management reporting.

• Coordinated the small technical team: first experience owning systems end to end, from the server room to the application layer.