Work

Independent full-stack developer delivering end-to-end web and mobile solutions for clients — from initial requirements and system architecture through development, deployment, and post-launch support.

Services

• Full-stack web and mobile application development (frontend, backend, database, and infrastructure).
• System architecture design for scalable, maintainable business applications.
• REST API development with authentication, authorization, and real-time features (WebSockets).
• Database modeling, optimization, and migration (PostgreSQL, SQL Server, MySQL).
• Technical consulting and process digitization for small and medium businesses.

Highlighted Project — Transportes Acaya

Designed and built a complete operational management system for a transport company, replacing manual spreadsheet-based processes with a structured, role-based digital workflow.

• Architected and developed a full-stack application using Next.js, NestJS, PostgreSQL, Prisma, and WebSockets.
• Implemented a trip lifecycle engine with defined states (pending → in review → ready to bill → invoiced), tracking route, driver, vehicle, client, and waybill data.
• Built a rate engine with client-specific pricing, automatic cost calculation, and manual override with justification logging.
• Developed a real-time notification system (WebSockets + push) to keep all stakeholders informed of status changes.
• Created role-based access for three user types (Admin, Manager, Driver) with granular permissions per module.
• Delivered Excel and PDF export capabilities with filters for operational and financial reporting.
• Implemented a full audit trail for traceability and accountability across all operations.
• Managed the complete project independently: client communication, requirement gathering, technical decisions, development, testing, and deployment.

Contributed to the IT and programming department in the full-cycle development of a multitenant enterprise platform serving multiple departments — from requirements gathering and architecture design to deployment and ongoing maintenance.

Development

• Contributed to building and maintaining a multitenant web platform (Angular, Express.js, SQL Server) enabling isolated environments per department — sales, operations, warehouse, and administration — under a single deployment.
• Collaborated in designing and implementing department-specific modules with tailored workflows: order management, inventory tracking, operational dashboards, and financial reporting.
• Participated in developing a role-based access control (RBAC) system and a centralized super-admin panel for tenant provisioning, user management, and cross-department configuration.
• Built responsive, Bootstrap-based interfaces optimized for desktop and tablet use across all business units.

Documentation & Quality

• Authored detailed technical documentation for every module, including API references, data models, and deployment guides.
• Resolved production incidents efficiently, reducing downtime and improving system reliability.
• Managed time strategically across concurrent workstreams to consistently meet sprint deadlines and release milestones.

Participated across all stages of the software development lifecycle — planning, development, testing, and delivery — for projects serving clients in banking, retail, geolocation, and enterprise sectors.

Project Manager

Led project delivery end-to-end using Scrum, managing scope, timelines, and stakeholder expectations for clients including Banco Avanz, Geotime, El Rey, AutoStar, and Guandy.

• Drove Scrum adoption and successfully implemented agile ceremonies across multiple concurrent projects, improving delivery predictability.
• Managed full project documentation lifecycle: requirements, sprint backlogs, change logs, and user manuals.
• Led client-facing meetings to gather requirements, present progress, and manage change requests — maintaining strong, long-term relationships.
• Developed comprehensive user manuals for every project under my responsibility, reducing onboarding time for end users.

QA

Owned the quality assurance process for mobile and web applications, from test strategy definition through execution and regression.

• Designed and executed test plans (functional, integration, acceptance) for banking (Banco Avanz), retail (El Rey, AutoStar), and geolocation (Geotime) applications.
• Built automated test suites for web and mobile platforms, reducing manual regression effort and accelerating release cycles.
• Reported, tracked, and verified bug fixes across development teams, ensuring zero critical defects in production releases.
• Established QA best practices and testing standards adopted across the organization’s project portfolio.