Yinier Rojas Martínez
Backend & Platform Engineer
I design and operate production backend systems, APIs, and cloud platforms—across distributed architectures, reliability, identity/security, and technical leadership. Day-to-day implementation often centers on C#, .NET, and Azure.
- →Around 10 years of software engineering experience spanning backend services, APIs, and cloud infrastructure
- →Hands-on with distributed and event-driven systems, production reliability, and security-minded platform work
- →Cross-team technical leadership through architecture decisions, API standards, mentoring, and delivery
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About
I'm a backend and platform engineer with around 10 years of experience. My work has grown from application development into architecture, distributed systems, cloud infrastructure, API design, reliability, and technical leadership.
I focus on designing and operating production backend systems—event-driven services, well-governed APIs, and cloud-native platforms—while keeping security, observability, and operability in the loop. Much of that work is grounded in C#, .NET, and Azure, with additional experience across AWS and modern web stacks.
I enjoy ambiguous technical problems, cross-team decision-making, and mentoring engineers. Outside of work I keep learning about system design and experiment with developer tooling and AI-assisted workflows.
Location: Miami, FL, USA
Skills & Technologies
Backend & Platform
Cloud & Infrastructure
Identity & Security
Reliability & Observability
Frontend
Developer Tooling / AI
Leadership
Experience
Lead Software Engineer
Remote / USA
- →Led core system integration applications supporting customer acquisition and digital self-service, with a focus on high availability and regulatory compliance.
- →Investigated and resolved Cosmos DB hot partition issues, improving query performance and reducing latency through partitioning strategy, resilience patterns, and event-driven offloading.
- →Architected serverless, event-driven workflows using Azure Functions, Service Bus, Cosmos DB, API Management, and Key Vault to improve scalability and reduce operational overhead.
- →Conducted regular security assessments to support PCI compliance and strengthen platform and API security posture.
- →Mentored engineers and led internal initiatives to raise code quality, including an internal coding standards guide and knowledge-sharing sessions.
- →Improved CI/CD pipelines to accelerate deployments and increase release reliability.
- →Led API Development Standards for the company's Center of Excellence—defining design standards, security-by-default practices, versioning, observability expectations, and CI/CD quality gates to drive API-first engineering across teams.
Lead Software Engineer
Remote / Guadalajara, Mexico
- →Led a distributed team delivering enterprise SaaS solutions for global clients, meeting delivery timelines and quality benchmarks.
- →Introduced CI/CD optimizations in Azure DevOps, reducing deployment times by 40% and improving release frequency.
- →Led 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
- →Built enhancements for high-availability SaaS platforms used by logistics companies, supporting 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
- →Architected migration of a monolithic booking platform to microservices, improving scalability and resilience during peak seasons.
- →Designed and deployed an AWS-based invoice processing system handling thousands of transactions daily, reducing manual processing time by 50%.
- →Built 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.
- →Introduced Agile delivery practices that increased sprint velocity by 15%.
Full Stack Developer
Remote / Mexico City, Mexico
- →Built integration between MercadoLibre sales platform and ShipHero inventory system for 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!