Orlando Martinez Guillen
Desarrollador De Software
Summary
Software Engineer and Technical Leader with experience designing, building, and scaling custom software products from concept to production. Throughout my career, I have partnered directly with founders, stakeholders, and business leaders to transform complex business challenges into scalable, secure, and data-driven technology solutions.
My expertise spans the entire software lifecycle, including product discovery, software architecture, full-stack development, cloud infrastructure, DevOps, cybersecurity, analytics, and process automation. I have led the development of mobile, web, and enterprise platforms, integrating third-party services, payment providers, cloud-native solutions, and real-time communication systems.
I am passionate about creating technology that delivers measurable business impact, whether through operational efficiency, user engagement, data intelligence, or digital transformation. I thrive in environments where technical excellence, product thinking, and innovation come together to solve meaningful problems.
Overview
7
7
years of professional experience
2
2
Languages
Work History
Tech Lead
Präna Marketing Group
01.2024 - Current
- Founded and led the company's Software Engineering department, defining the technical vision, software architecture, development standards, and cloud infrastructure from the ground up.
- Partnered closely with Product & Growth leadership to transform business strategies into scalable digital products that support Präna's employee benefits, loyalty, and rewards ecosystem.
- Designed, developed, and maintain multiple custom software products tailored to the company's core business, enabling benefit management, loyalty programs, promotional campaigns, and customer engagement initiatives.
- Led the complete software development lifecycle, including product discovery, architecture, implementation, cloud infrastructure, CI/CD pipelines, deployment, monitoring, and long-term platform maintenance.
- Designed and implemented scalable backend services, APIs, authentication systems, and integrations with third-party providers, including payment gateways, internal partner platforms, and external business services.
- Built data collection and analytics platforms that measure user engagement, benefit usage, campaign performance, and customer behavior, providing actionable insights for enterprise clients.
- Developed event-driven automation systems that personalize communications, notifications, and promotional campaigns based on user segmentation, consumption patterns, and lifecycle events.
- Led database migrations, platform modernization initiatives, and legacy system improvements while ensuring service continuity and scalability.
Implemented DevOps practices using GitHub Actions and Google Cloud Platform (GCP), improving deployment reliability, operational efficiency, and development workflows. - Mentored developers, established engineering best practices, and drove technical decision-making across multiple products.
Full Stack Web Developer & Team Lead Trainee
Blackstone Studio
09.2021 - 11.2023
- Developed and maintained custom software solutions for startups and enterprise clients, delivering web, mobile, and backend applications tailored to each client's business requirements.
- Collaborated with multidisciplinary teams throughout the complete software development lifecycle, from technical discovery and architecture to implementation, deployment, and long-term maintenance.
- Refactored and modernized existing applications, improving code quality, scalability, maintainability, and overall system performance.
- Designed and implemented RESTful and GraphQL APIs, third-party integrations, authentication systems, and cloud-native services across multiple client projects.
- Participated in the development of cross-platform mobile applications and responsive web platforms using modern JavaScript and TypeScript ecosystems.
- Automated build, testing, and deployment workflows by implementing CI/CD pipelines with CircleCI, reducing release times and improving delivery reliability.
- Worked with AWS cloud services to deploy, monitor, and scale production applications while improving infrastructure reliability and operational efficiency.
- Collaborated closely with product managers, designers, and clients to translate business requirements into scalable technical solutions.
- Served as Team Lead Trainee, mentoring junior developers, participating in technical planning, conducting code reviews, and supporting project coordination and agile delivery.
Freelance Software Engineer
Practice Connector
01.2020 - 12.2021
- Architected and developed a healthcare referral management platform from the ground up, transforming business requirements into a scalable cross-platform SaaS solution.
- Collaborated directly with the client throughout the product lifecycle, gaining a deep understanding of business processes and translating them into technical solutions that improved referral management workflows.
- Designed and implemented a robust backend using NestJS and GraphQL, building scalable APIs, authentication, business logic, and database integrations.
- Developed the mobile and web applications using React Native and React Native Web, delivering a unified experience across iOS and desktop platforms.
- Led the implementation of a custom native integration between React Native and the Mapbox Navigation SDK, developing a Swift-based bridge layer that exposed native navigation functionality to the JavaScript ecosystem.
- Implemented route optimization, scheduling, referral tracking, task management, reporting dashboards, to support healthcare practice representatives.
- Worked closely with stakeholders to continuously refine features, prioritize business needs, and deliver iterative improvements in an agile environment.
- Took ownership of the full software development lifecycle, including architecture, implementation, testing, deployment, and long-term maintenance.
Full Stack Web Developer
Sarver Institute (Freelance)
02.2019 - 09.2019
- Developed a comprehensive educational and collaboration platform for a leading orthodontics institution in the United States using Node.js, TypeScript, Express, Socket.IO, and Angular.
- Architected and implemented real-time communication features, including social feeds, instant notifications, and messaging systems, enabling seamless interaction between students, faculty members, and healthcare professionals.
- Designed and developed a professional knowledge-sharing platform where orthodontists could publish, discuss, and distribute educational resources, including books, scientific articles, case studies, and research materials.
- Built scalable backend services and real-time event-driven systems using Socket.IO to support high levels of user engagement and collaboration.
- Collaborated closely with multidisciplinary development teams, contributing to architecture discussions, feature design, implementation, testing, and deployment.
- Applied modern software engineering practices to ensure maintainability, scalability, and long-term sustainability of the platform.
Languages
English
Intermediate (B1)
Spanish
Bilingual or Proficient (C2)
Skills
Project management
Technical problem solving
Test-driven development
Requirements gathering
Security best practices
Software architecture design
Mobile application development
Software development lifecycle
Team collaboration
Team leadership
Client communication
Timeline
Tech Lead
Präna Marketing Group
01.2024 - Current
Full Stack Web Developer & Team Lead Trainee
Blackstone Studio
09.2021 - 11.2023
Freelance Software Engineer
Practice Connector
01.2020 - 12.2021
Full Stack Web Developer
Sarver Institute (Freelance)
02.2019 - 09.2019