Alejandro Cuellar

Experience

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  ISSC- Informática Servicios y Soluciones –Subsidiaria IBM

  Jul 2009 - Nov 2010

  Support Engineer

  User support, Management of operating systems, support and manage of LAN networks, support and installation of financial programs.

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  Huawei Technologies

  Nov 2009 - Jan 2014

  IT Support Specialist

  Help Desk: Installation of operating systems XP, Win7, Windows Server, MacOS. Support to Huawei users about the IT platform for daily working activities.• Onboard of the new It engineers, and supporting them on the daily basis.• I lead 2 IT Engineers. • Assume responsibility for user problems, demonstrating ownership.• Proactively address user issues without waiting for escalation.• Proficiently troubleshoot networking and connection problems.• Skillfully resolve issues related to networking and connectivity.Oversee the acquisition of computer systems, peripherals, and office supplies.Planning, implementing, deployment and control of Internal Huawei Projects, related with IT platform and construction of new Huawei offices, install conference rooms from the setting up and provide ongoing support for conference rooms post-installation.Huawei Colombia office Network Support: Configuration, management and troubleshooting of Huawei networking devices. Implementation and management of monitoring solutions to ensure the optimal health and performance of IT infrastructure and applications.I've participated in the migration of 200 new hires from a contractor company to direct employees in Huawei in Quito Ecuador, in this project I prepared the pre-onboarding tasks as prepare the operative sytem, and specific software for each role, also I lead the proper support after the conclusion of the project, with tasks as solution of daily basis issues as user access, or restore user credentials. Show less

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  TigoUne

  Jan 2014 - Oct 2024

  Digital Transformation Engineer

  • I was part of the development team for the digital transformation project, focusing on task automation and web application development using Rails, React, Express, Oracle, and PostgreSQL technologies.• Automation of repetitive tasks to enhance efficiency and timely delivery of information for decision-making.• I worked with the development, product and business teams to identify, report and resolve errors or damages in the B2B customer self-service platform for all of Colombia.• I developed a web platform for B2B inventory management for a Tigo subsidiary.• I implemented test automation scripts to evaluate the performance of internally developed REST APIs using Postman and Python, which reduced manual testing time by 70%.• I coordinated testing with end users and stakeholders to ensure the product met business requirements and was fit for production implementation.• I developed web modules for the case assignment process for the bidding team, contract inquiries, and billing details, which reduced operational workload by 40%.• I implemented ETL in Oracle for portfolio management between different billers for B2B clients, allowing a 30% improvement in collections.• I participated in the implementation of a monitoring tool for the application server.• I gained experience in Oracle and PostgreSQL, both in DML (Data Manipulation Language) and DDL (Data Definition Language) operations.• I was part of the operations team for digital platforms supporting B2B customers, IVR (Inverse Voice Response), and TBO (Tigo Business Online), as part of a continuous improvement project for these channels, achieving a 30% optimization in manual operations.• I participated in the technological migration project of the B2B IVR, from requirements gathering, test planning, and final production rollout.• I served as the professional responsible for ensuring that feasibility, installation, and service support tasks for B2B customers were completed on time. Show less

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  Alphago Technology SAS

  Aug 2021 - Oct 2024

  Ingeniero de Sistemas

  Application and Systems Development: Design, implement, and maintain applications using languages such as Java and Python, along with frameworks like Spring Boot, integrating frontend technologies like React, HTML, and CSS to deliver intuitive and functional user experiences.Relational and Non-Relational Database Management: Administer and optimize Oracle and MongoDB databases, developing efficient queries and processes for projects involving large volumes of data and high-performance requirements.Data Processing and Analysis: Develop advanced solutions for data manipulation, analysis, and management in Python, leveraging specialized libraries and tools to support data-driven decision-making.Integration, Deployment, and Automation: Implement and manage development and production environments using Docker and Kubernetes, ensuring a scalable and reliable infrastructure for systems and applications.Technical Issue Resolution and Advanced Support: Identify, diagnose, and resolve technical incidents in applications, platforms, and services, ensuring operational continuity and improving the end-user experience.Testing and Quality Assurance: Perform functional, performance, and integration testing on systems developed with multiple technologies, validating their behavior and compatibility before production deployment.Platform Optimization and Modernization: Design and implement improvements in system and application architecture, including performance optimization, scalability, and the adoption of new technologies. Show less

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  La Unidad de Pensiones y Parafiscales -UGPP

  Nov 2024 - now

  Full-stack Developer / Web Master

  In my role as a developer, I am dedicated to ensuring the functionality, security, and scalability of the entity’s web portals. I collaborate closely with functional areas, translating business requirements into technical solutions, and supporting teams throughout the development life-cycle. My knowledge in IT systems, including software development, networking, and cloud technologies, enables me to implement robust solutions that enhance system performance and facilitate seamless communication between technical and functional teams.Main Achievements and Responsibilities:Analyzed, designed, and developed key functionalities for web portals, covering the entire development cycle: requirements gathering, time estimation, testing, implementation, and stabilization in production.Implemented technical and security improvements in systems, addressing vulnerabilities and increasing reliability in critical environments.Directly addressed and resolved user area requests, ensuring effective response times using incident management tools.Actively collaborated with vendors and internal teams to ensure developed solutions met technical and operational requirements.By combining my expertise in software development, networks, and cloud, I have implemented technical improvements that allow systems to continuously adapt to new challenges, ensuring platforms with higher performance and reliability.Highlighted Projects:Led the development and implementation of new architectures for integration with the PSE payment gateway, using Google Cloud Platform, Docker, and Kubernetes, resulting in a more efficient and scalable system.Managed the migration of the institutional website, ensuring on-time delivery with full technical oversight of the development process. Show less