# Daniel Strausz León

> Software Engineer at Amazon

Location: New York City Metropolitan Area, United States
Profile: https://flows.cv/danielstrauszlen

Software Engineer with over 5 years of experience, focused on web development and distributed systems. Worked with numerous frameworks and programming languages such as Spring, Vertx, NodeJS, Angular, Python, Java and Kotlin.
Experienced with both Relational and Non-relational databases such as Postgres, MongoDb, DocumentDb and DynamoDb. 
Eager to contribute to team success through hard work and attention to detail.

## Work Experience
### Software Engineer @ Amazon
Jan 2022 – Present | New York City Metropolitan Area
• Automated user ledger permissions and platform access by creating scheduled events, reducing on-call responsibilities by approximately 30%.
• Designed and developed a type-safe parser that converts Excel formulas into SQL queries, with support for value placeholders.
• Pioneered the integration of an A/B testing tool and framework in FinTech Org.
• Developed a validation engine for financial journal entries pre-submission that saves 140 accounting hours yearly.
• Contributed to feature development and addressed technical debt to improve engineering efficiency, reducing on-call alarms and manual activities.
• Designed and developed a mechanism to expire data seamlessly across different services like DynamoDB, ElasticSearch, S3 and Glue.

### Senior Software Engineer @ Covalto
Jan 2020 – Jan 2022
• Created a payments gateway in charge of processing and routing all company payments. Built with FastApi, PostgreSQL and Kafka.
• Took part in the development of a micro-service that handled all Salesforce needs of the company.
• Worked on a Python service in charge of building the detailed Excel files of loans and leases.
• Developed a micro-service with FastApi and PostgreSQL to generate unique id's for all products and users, and integrated it across the different services that needed it.
• Worked on the microservice in charge of the integration with UberEats, developed with Django and PostgreSQL.

### Software Engineer @ Rappi
Jan 2018 – Jan 2020
• Created a customer support chatbot in WhatsApp
• Programmed an internal system to schedule and send marketing campaigns to Rappi's users by different channels, such as text message, push notifications and others
• Massive deep-link creation and update service for referral coupons
• Developed a service that analyzed user's phone contacts to verify who were
Rappi users; used by referrals program, Rappi Games and delivery men app
• Developed fraud prevention micro-service for coupons
• Worked in the creation of an event driven architecture for referrals and
coupon redeeming insights with Amplitude
• Developed highly scalable and highly available proxy for Rappi's web app
• Multiple refactors and features for the CPGs section of Rappi's web app
• Refactored search bar in Rappi's web app


## Education
### Bachelor's degree in Computer Science
Tecnológico de Monterrey
Jan 2014 – Jan 2018

### Summer Course in Computer Intelligence
Czech Technical University in Prague
Jan 2017 – Jan 2017


## Contact & Social
- LinkedIn: https://linkedin.com/in/dstrausz

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Source: https://flows.cv/danielstrauszlen
JSON Resume: https://flows.cv/danielstrauszlen/resume.json
Last updated: 2026-03-22