Yinier Rojas Martínez
Senior Software Engineer
I design and deliver scalable, cloud-native solutions that drive measurable business impact.
- →10 years in .NET, Azure, and full-stack development
- →Proven track record of leading teams and modernizing critical systems
- →Strong leadership, mentoring, and results-focused delivery
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About
I'm a software engineer specializing in backend development with .NET, building scalable, secure, and resilient systems in the cloud. Over the years I have designed and delivered enterprise solutions using Azure services, event-driven architectures, and modern API standards.
While backend engineering is my strongest focus, I also have fullstack experience from building SPAs with Angular to more recent work with React and Next.js. This allows me to deliver complete, end-to-end solutions when needed.
I enjoy solving complex problems, mentoring developers, and continuously refining processes for performance, security, and maintainability. Outside of work I explore new technologies, experiment with side projects, and keep learning about software architecture and system design.
Location: Miami, FL, USA
Skills & Technologies
Languages
Frontend
Backend
Databases
Cloud
DevOps
Soft Skills
Experience
Lead Software Engineer
Remote / USA
- →Technical lead for core system integration applications supporting customer acquisition and digital self-service capabilities, ensuring high availability and regulatory compliance.
- →Resolved Cosmos DB hot partition issues, improving query performance and eliminating latency through strategic partitioning, resilience patterns, and event-driven offloading.
- →Designed and implemented serverless, event-driven architectures leveraging Azure Functions, Service Bus, Cosmos DB, API Management, and Key Vault to increase scalability and reduce operational overhead.
- →Conducted regular security assessments, ensuring compliance with PCI standards and strengthening the organization’s security posture.
- →Mentored engineers and led internal initiatives to raise code quality standards, creating an internal coding standards guide and facilitating knowledge-sharing sessions.
- →Optimized CI/CD pipelines, accelerating deployment times and improving release reliability.
- →Appointed API Development Standards Lead for the company’s Center of Excellence, defining API governance practices and establishing consistency across development teams.
Lead Software Engineer
Remote / Guadalajara, Mexico
- →Led a distributed team delivering enterprise SaaS solutions for global clients, consistently meeting delivery timelines and exceeding quality benchmarks.
- →Introduced CI/CD optimizations in Azure DevOps, reducing deployment times by 40% and improving release frequency.
- →Spearheaded adoption of serverless infrastructure in Azure, lowering operational costs by 25%.
- →Mentored and onboarded 5+ junior developers, improving ramp-up time by 30%.
Software Engineer II
Remote / Mexico City, Mexico
- →Developed enhancements for high-availability SaaS platforms used by logistics companies, ensuring 99.9% uptime.
- →Improved application performance by 20% through refactoring and query optimization.
- →Partnered with product owners to deliver features aligned with strategic goals under tight deadlines.
Full Stack Developer
Cancún, Mexico
- →Migrated monolithic booking platform to microservices architecture, improving scalability and resilience during peak seasons.
- →Designed and deployed AWS-based invoice processing system handling thousands of transactions daily, reducing manual processing time by 50%.
- →Implemented fault-tolerant bulk processing APIs, eliminating downtime in critical financial workflows.
Software Developer | Team Lead
Remote / France
- →Led development of voice-activated assistants (Google Actions, Alexa Skills) leveraging proprietary ultrasonic communication technology.
- →Coordinated a cross-functional team to deliver MVPs ahead of schedule, accelerating client go-to-market timelines.
- →Instituted best practices in Agile delivery, increasing sprint velocity by 15%.
Full Stack Developer
Remote / Mexico City, Mexico
- →Integrated MercadoLibre sales platform with ShipHero inventory system, enabling real-time synchronization of product listings and stock.
- →Automated sales workflows, reducing manual inventory updates by 70%.
Freelance Developer
Cienfuegos, Cuba
- →Delivered custom e-commerce and CMS solutions for small businesses, enabling clients to launch online stores with payment and fulfillment systems.
- →Built and deployed WordPress-based websites optimized for SEO and performance.
Get In Touch
I enjoy connecting with fellow developers, discussing innovative projects, and sharing knowledge about software engineering. Whether you have a question, want to collaborate, or just want to say hi, I'd love to hear from you!