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Hi, I’m Einar Montalvo, a Senior Software Engineer with over 8 years of experience designing and scaling cloud-native SaaS platforms. I have a passion for building high-performance applications primarily in Fintech, Healthcare, and SaaS using modern technologies like C#/.NET, Angular, React, and cloud platforms such as Azure and AWS. I enjoy tackling challenging problems and delivering secure, distributed systems. I thrive working in Agile teams and mentoring junior engineers to grow their skills. Collaborating closely with cross-functional teams to translate complex workflows into seamless user experiences is something I find very rewarding. I’m always eager to stay current with new technologies and continuously improve development practices to create impactful software products.…Hi, I’m Einar Montalvo, a Senior Software Engineer with over 8 years of experience designing and scaling cloud-native SaaS platforms. I have a passion for building high-performance applications primarily in Fintech, Healthcare, and SaaS using modern technologies like C#/.NET, Angular, React, and cloud platforms such as Azure and AWS. I enjoy tackling challenging problems and delivering secure, distributed systems. I thrive working in Agile teams and mentoring junior engineers to grow their skills. Collaborating closely with cross-functional teams to translate complex workflows into seamless user experiences is something I find very rewarding. I’m always eager to stay current with new technologies and continuously improve development practices to create impactful software products.

Einar Montalvo

Developer, Programmer, Cloud Developer, +2

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Hi, I’m Einar Montalvo, a Senior Software Engineer with over 8 years of experience designing and scaling cloud-native SaaS platforms. I have a passion for building high-performance applications primarily in Fintech, Healthcare, and SaaS using modern technologies like C#/.NET, Angular, React, and cloud platforms such as Azure and AWS. I enjoy tackling challenging problems and delivering secure, distributed systems. I thrive working in Agile teams and mentoring junior engineers to grow their skills. Collaborating closely with cross-functional teams to translate complex workflows into seamless user experiences is something I find very rewarding. I’m always eager to stay current with new technologies and continuously improve development practices to create impactful software products.…Hi, I’m Einar Montalvo, a Senior Software Engineer with over 8 years of experience designing and scaling cloud-native SaaS platforms. I have a passion for building high-performance applications primarily in Fintech, Healthcare, and SaaS using modern technologies like C#/.NET, Angular, React, and cloud platforms such as Azure and AWS. I enjoy tackling challenging problems and delivering secure, distributed systems. I thrive working in Agile teams and mentoring junior engineers to grow their skills. Collaborating closely with cross-functional teams to translate complex workflows into seamless user experiences is something I find very rewarding. I’m always eager to stay current with new technologies and continuously improve development practices to create impactful software products.

Available to hire

Hi, I’m Einar Montalvo, a Senior Software Engineer with over 8 years of experience designing and scaling cloud-native SaaS platforms. I have a passion for building high-performance applications primarily in Fintech, Healthcare, and SaaS using modern technologies like C#/.NET, Angular, React, and cloud platforms such as Azure and AWS. I enjoy tackling challenging problems and delivering secure, distributed systems.

I thrive working in Agile teams and mentoring junior engineers to grow their skills. Collaborating closely with cross-functional teams to translate complex workflows into seamless user experiences is something I find very rewarding. I’m always eager to stay current with new technologies and continuously improve development practices to create impactful software products.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Slalom Consulting

February 1, 2023 - Present

Developed a scalable BNPL platform supporting multi-store and branch hierarchies, integrating user wallets and real-time financial operations using C#, .NET, SQL Server, and Redis. Engineered microservices using Clean Architecture and CQRS, ensuring maintainability and domain separation across financial modules. Led the architecture and delivery of a robust insurance workflow system handling complex operations like policy issuance, renewals, and internal approvals. Developed background processing services using .NET Worker Services and Hangfire, enabling task scheduling, retries, and job monitoring. Utilized Entity Framework Core with code-first migrations and LINQ queries to efficiently manage SQL Server databases and ensure data integrity. Integrated Redis for caching frequently accessed data and improving response times for high-traffic endpoints. Implemented comprehensive unit and integration tests using xUnit, Moq, and TestServer, reaching over 90% coverage on critical APIs. Autom

Senior .NET Developer at JPMorgan Chase & Co

January 31, 2023 - July 28, 2025

Developed and maintained enterprise-grade microservices in .NET Core to support trading workflows, reducing processing time by 30%. Built internal reporting APIs using ASP.NET Core and SQL Server, powering compliance dashboards for risk and audit teams. Implemented the frontend features with TypeScript, Angular, NgRx and Angular Material. Contributed to a company-wide .NET modernization initiative, migrating legacy services to cloud-native architectures on AWS. Participated in Agile squads, collaborating closely with business analysts, QA, and global development teams to deliver secure, performant fintech features. Integrated internal .NET services with Kafka for real-time data streaming across investment banking platforms.

.NET Developer at American Airlines

February 28, 2020 - July 28, 2025

Developed and maintained ASP.NET Core APIs supporting flight booking, baggage tracking, and passenger management systems, used by millions of travelers daily. Migrated legacy .NET Framework services to .NET 6, reducing system downtime and improving performance by 35%. Created dashboards with Grafana and Application Insights for monitoring system health, reducing mean-time-to-recovery (MTTR) by 45%. Implemented RESTful microservices for fare calculation and loyalty program logic, ensuring high availability under peak holiday traffic. Developed message-driven architecture with RabbitMQ and Azure Service Bus for decoupled flight operations and real-time updates. Collaborated in Agile squads with PMs, QA engineers, and UX teams to deliver new check-in features in 2-week sprints.