Senior Software Engineer - .NET, React, Azure
Resume:
Senior Software Engineer
****************@*****.***
linkedin.com/in/hainer-sanchez-rojas-32a2173b8
Barranquilla, Atlántico, CO
Results-driven Senior Software Engineer with 8+ years of experience specializing in C#, ASP.NET Core, .NET, React, Angular, TypeScript, JavaScript, SQL Server, Azure, Docker, and cloud-native application development. Proven ability to architect and deliver enterprise-scale platforms, modernize legacy systems, build secure REST APIs, and develop responsive frontend applications with exceptional user experiences. Strong knowledge of microservices, clean architecture, SOLID principles, design patterns, CI/CD, automated testing, and DevOps practices. Recognized for technical leadership, effective stakeholder communication, and delivering reliable, scalable solutions that drive measurable business value.
Work Experience
Hainer Sanchez
Senior Software Engineer
PagerDuty San Francisco, CA, USA (Remote)
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Built and improved incident management and internal workflow features using C#, .NET Core, ASP.NET Core, React, TypeScript, and PostgreSQL for teams handling alerts, escalations, and service reliability. Developed backend APIs and service logic that improved response time by 17% in one high-usage workflow by reducing redundant processing and tightening query performance. Refined frontend and backend integration across several user flows, which helped reduce support issues in that area by 12% over time.
Worked closely with product and engineering teams from planning through release, while also cleaning up older code and making the platform easier to maintain.
Apr 2024 Present
Full Stack Engineer
Ramp - US based Fintech Startup New York, NY, USA (Remote)
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Delivered end-to-end product features—from backend services to the user interface—helping speed up the company’s product development cycle by about 30%.
Improved collaboration between engineering and product teams by owning the full implementation of 5 new platform features.
Helped modernize key parts of the platform, enabling the company to roll out a better user experience for customers and increase user satisfaction by roughly 20%. Contributed to faster release cycles by supporting more efficient development and testing workflows, cutting release time by around 25%.
Played a key role in shipping new platform capabilities that strengthened the company’s competitive position in the market and helped grow active users by about 15%.
Sep 2020 Mar 2024
Software Engineer
Altoros Pleasanton, California, USA (Remote)
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Developed web applications using C#, ASP.NET MVC, .NET Framework/ .NET Core, SQL Server, JavaScript, and React, contributing to both new feature work and ongoing product improvements. Improved one client-facing workflow by 11% by reducing unnecessary form handling steps and cleaning up validation logic on the backend.
Helped reduce recurring bugs in one module by 14% by fixing fragile logic and improving data handling between the UI and database layer.
Jul 2019 Aug 2020
Core Skills
Programming Languages:
Frontend:
Cloud & DevOps:
Integration & Security:
Backend:
Data & Messaging:
Architecture:
Testing & Quality:
Education
Supported the full development cycle, including implementation, testing, release support, and maintenance of live business applications.
C#, Typescript, Javascript, Java, SQL, C/ C++
React, Next.js, Redux, Angular, Vue.js, Blazor, JavaScript/ TypeScript, HTML5/ CSS3, jQuery, Tailwind CSS, Material UI
AWS, Lambda, EC2, RDS, Cognito, GCP, GKE, Pub/ Sub, Cloud Run, Docker, Kubernetes, Terraform, Ansible, GitHub Actions, Jenkins, CI/CD pipelines, Azure App Services, Azure Functions OAuth 2.0, JWT, WebSockets, Third-Party API Integration Node.js, Express.js, .NET, ASP.NET Core, ASP.NET MVC, Spring Boot, RESTful APIs PostgreSQL, MySQL, MongoDB, SQL Server, Redis
Microservices, Event-driven systems, Distributed systems, Billing/ Usage metering, Security/PCI Unit Testing, Integration Testing, Jest, Mocha, React Testing Library, Cypress, TDD, Code reviews Universidad del Norte -
B.S. Computer Science
May 2015 Jun 2019
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