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I'm a Senior Software Engineer with over a decade of experience building scalable backend systems using Java, Kotlin, C#, and .NET, with a strong focus on microservices, cloud infrastructure (AWS, Azure), and API design. I’ve led backend development for high-traffic platforms, optimized systems for performance and reliability, and collaborated cross-functionally to ship meaningful products. Passionate about clean architecture, developer experience, and solving real-world problems with smart, practical code.…I'm a Senior Software Engineer with over a decade of experience building scalable backend systems using Java, Kotlin, C#, and .NET, with a strong focus on microservices, cloud infrastructure (AWS, Azure), and API design. I’ve led backend development for high-traffic platforms, optimized systems for performance and reliability, and collaborated cross-functionally to ship meaningful products. Passionate about clean architecture, developer experience, and solving real-world problems with smart, practical code.

Leo Finzel

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I'm a Senior Software Engineer with over a decade of experience building scalable backend systems using Java, Kotlin, C#, and .NET, with a strong focus on microservices, cloud infrastructure (AWS, Azure), and API design. I’ve led backend development for high-traffic platforms, optimized systems for performance and reliability, and collaborated cross-functionally to ship meaningful products. Passionate about clean architecture, developer experience, and solving real-world problems with smart, practical code.…I'm a Senior Software Engineer with over a decade of experience building scalable backend systems using Java, Kotlin, C#, and .NET, with a strong focus on microservices, cloud infrastructure (AWS, Azure), and API design. I’ve led backend development for high-traffic platforms, optimized systems for performance and reliability, and collaborated cross-functionally to ship meaningful products. Passionate about clean architecture, developer experience, and solving real-world problems with smart, practical code.

Available to hire

I’m a Senior Software Engineer with over a decade of experience building scalable backend systems using Java, Kotlin, C#, and .NET, with a strong focus on microservices, cloud infrastructure (AWS, Azure), and API design. I’ve led backend development for high-traffic platforms, optimized systems for performance and reliability, and collaborated cross-functionally to ship meaningful products. Passionate about clean architecture, developer experience, and solving real-world problems with smart, practical code.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Coherent Solutions

August 1, 2021 - Present

Collaborated with cross-functional teams to develop and deploy scalable, cloud-based web applications using AWS services (EC2, S3, Lambda, DynamoDB). Built full-stack solutions, designing REST APIs and microservices with Python frameworks (Django, Flask) while developing front-end interfaces with React. Resolved technical issues, optimized AWS infrastructure and application performance, and contributed to security, performance optimization, and cost management across cloud services.

Software Developer at Citigroup

July 1, 2021 - September 23, 2025

Developed backend services using Python and integrated complex financial systems under high transaction loads. Participated in the full software development lifecycle including design, implementation, and testing of RESTful services with Django and Flask. Worked with frontend developers to integrate React interfaces with backend APIs for real-time data visualization. Assisted with performance tuning and system monitoring to improve responsiveness and minimize latency.

Junior Software Developer at Walmart Global Tech

July 1, 2018 - September 23, 2025

Supported backend development for Walmart’s eCommerce systems using a mix of legacy Java services and new Python-based microservices. Aided in migrating core services to Python frameworks and deploying applications to AWS (EC2, S3). Contributed to full-stack features including frontend components in React and API endpoints in Flask. Collaborated with various internal teams to integrate new features into Walmart’s large-scale systems.