Andrés Bonilla Escobar

Within a product team, in a multi-platform development context (web and mobile), the company needed to deliver robust applications while maintaining a scalable codebase, reliable data exchange with third-party services, and a polished user experience.

As a Senior Frontend Developer, I was responsible for covering the entire product lifecycle: from design to production, including API integration, adherence to UX/UI mockups, and the quality of the delivered code.

• Designed and delivered complete web and mobile applications, from the design phase to deployment and post-production support.

• Participated in application architecture decisions, contributing to defining a coherent and scalable technical roadmap.

• Implemented robust web services and integrated internal and external APIs to ensure reliable data flows between systems.

• Transformed UX/UI mockups into functional and final interfaces, preserving design fidelity and improving user experience.

• Ensured preventive maintenance, planned evolutions, optimized performance, and reduced the number of production bugs.

• Led systematic code reviews and performed exhaustive functional tests to limit regressions and strengthen collective quality.

Results:

• Web and mobile applications delivered and operational, covering the entire product lifecycle.

• Clarified architecture, providing a stable and scalable technical foundation for the team.

• Unified and reliable data flows through the integration of internal and external APIs.

• Service level maintained with continuous reduction of production bugs and regressions.

• Strengthened collective quality through a culture of systematic code reviews and testing.

Stack: React · React Native · TypeScript · Node.js · MongoDB · SCSS/SASS · CI/CD · Git

In a context of product growth, the company needed to accelerate its web and mobile deliveries while aligning development with business requirements and managing complex technical integrations.

As a Senior Frontend Lead Developer, I supervised a team of 3 developers, managed the complete development cycle, and ensured the technical reliability of the delivered applications.

• Supervised 3 developers by structuring the roadmap and ensuring deliveries aligned with business requirements.

• Developed end-to-end web and mobile applications, transforming client needs into production-ready products.

• Designed robust web services and integrated multiple APIs to streamline exchanges between internal and partner flows.

• Industrialized UX/UI mockups into final interfaces, improving user experience and visual consistency.

• Implemented a maintenance and optimization program, reducing response times and critical incidents.

• Oversaw deployments on Google Play and App Store, ensuring publications complied with standards.

Results:

• Regular deliveries aligned with business priorities thanks to a structured team.

• Web and mobile applications delivered from design to production.

• Reliable data through stable web services and mastered API integrations.

• Critical incidents reduced and performance optimized.

• Regressions in production diminished thanks to rigorous code reviews and functional tests.

Stack: React · Angular · React Native · TypeScript · JavaScript · NativeScript · SCSS/SASS · Git · SQL · Jenkins · Scrum

In an internal project context, the team needed reliable and long-term maintained web tools to support its operational activities.

As a Senior Frontend Developer, I was responsible for the development, deployment, and sustainability of web applications, while ensuring their post-production stability.

• Developed and deployed complete web applications, delivering operational tools directly used by the project team.

• Ensured post-production monitoring and corrective maintenance, maintaining the reliability of online services.

• Implemented unit test automation, securing evolutions and reducing user feedback.

Results:

• Operational web tools delivered and used in production by the project team.

• Service reliability maintained through rigorous post-production monitoring.

• Regressions reduced and evolutions secured through unit test automation.

Stack: Angular 2 · TypeScript · JavaScript · Java · PHP · Symfony · SQL · HTML · CSS