Juan Ramos

Mid-level IT professional experienced with 7+ years designing and developing data-driven and visually georeferenced web applications, integrating multiple heterogeneous data sources into clear, intuitive, and high-performance user interfaces. Strong background across front-end and back-end development, APIs, databases, and cloud-based systems, with a consistent focus on clean architecture, scalability, and maintainability.

Experienced collaborating closely with stakeholders, designers, QA, and junior developers, including contributing at a junior architectural level through code reviews, technical decision support, and design validation. Known for strong problem-solving skills, adaptability, and a proactive mindset that drives continuous improvement and measurable impact.

• Acted as Level 1 escalation point, diagnosing complex infrastructure and network issues and implementing permanent fixes that reduced repeat incidents by ~25%.
• Installed, configured, and maintained routers, switches, firewalls, and wireless networks, supporting multisite client networks with VLAN segmentation and Wi-Fi performance optimisation.
• Supported and maintained Windows Server, Microsoft 365, Azure AD, Exchange Online, and Intune across multiple client environments, ensuring stable day-to-day operations for 200+ end users.
• Provided operational support for Windows and Linux server environments, including patching, monitoring, and fault resolution across production systems.
• Supported Active Directory, domain controllers, DNS, DHCP, and Group Policies, ensuring secure and reliable authentication for 100+ users.
• Assisted with network integration and troubleshooting, resolving connectivity and performance issues across LAN and WLAN environments.

• Led and reviewed 100+ pull requests, enforcing architectural and coding standards that reduced post-release defects by ~30%.
• Identified and resolved design, architectural, and implementation issues early in the SDLC, improving system stability and long-term maintainability.
• Acted as a technical escalation point for complex features, supporting multiple development teams and accelerating delivery timelines.
• Mentored and guided 5+ junior developers, improving code quality, onboarding speed, and overall team productivity.
• Collaborated with cross-functional developers to design algorithms, system flows, and technical solutions, ensuring alignment with business and scalability requirements.
• Supported release consolidation and deployment readiness, contributing to on-time delivery of production releases.

• Designed, developed, and maintained full-stack web applications, delivering new features with a ~25% reduction in time-to-market through process and code optimisation.
• Improved requirements analysis, development, and testing workflows, increasing team efficiency and reducing rework.
• Built and optimised integrations between databases and web applications, improving data retrieval performance by ~40%.
• Maintained high standards of code quality and version control, reducing merge conflicts and improving collaboration across teams.
• Wrote and maintained complex SQL queries and stored procedures, supporting reliable data access and reporting.
• Provided production support and incident resolution, ensuring application availability and fast issue turnaround for end users.
• Actively participated in Agile/Scrum ceremonies, contributing to sprint planning, estimations, and continuous improvement initiatives.

• Installed, upgraded, and repaired 200+ desktops and laptops, including CPU, RAM, SSD/HDD, power supplies, and peripherals, achieving a ~95% successful repair rate.
• Diagnosed and resolved hardware, OS, BIOS/UEFI, and driver-level issues, reducing average troubleshooting time by ~30% through systematic fault isolation.
• Performed electronic-level component repairs, identifying faulty boards, connectors, cables, and power modules using multimeters and diagnostic tools, extending device lifespan and reducing replacement costs.
• Conducted preventive maintenance and post-repair validation, lowering repeat fault incidents by ~25%.
• Delivered on-site and workshop-based technical support while maintaining high customer satisfaction through clear explanations and reliable outcomes.
• Documented repairs, components replaced, and test results, improving traceability and service consistency.

• Repaired and restored 150+ smartphones, desktops, and laptops, replacing defective components and returning devices to full operational condition.
• Installed and configured operating systems, drivers, and essential applications, improving device performance and reducing post-service issues.
• Replaced internal components including motherboards, processors, RAM, storage devices, and connectors, maintaining strict quality and safety standards.
• Configured BIOS/firmware settings to optimise hardware compatibility and system stability.
• Performed routine maintenance, upgrades, and system optimisation, extending device usability and reducing failure rates.
• Provided clear user instructions and post-repair guidance, decreasing repeat support requests and improving customer confidence.

Awards & Honors: Full Bachelor Scholarship