Walter T.

Designing and implementing microservices using Python, Flask, FastAPI, Go, AWS SQS/SNS, DynamoDB, Lambda, PostgreSQL, CI/CD, Docker, Kubernetes and other technologies. Optimizing Performance and Monitoring: Streamline operations and enhance service efficiency by fine-tuning performance metrics and implementing comprehensive monitoring systems using Datadog, Sentry, ELK Stack (Elasticsearch, Kibana, Logstash), Codefresh and other internal tools.

• Designed and created a new API workflow to replace the Cornershop merchant self-onboarding.
• Developed, implemented, and maintained backend microservices that directly power the UberEats app's storefront, store search, and individual item view.
• Created and executed backend experiments (XPs) to assess the impact of changes and optimize conversion rates, with improvements ranging from 5% to 12%.

• Contracted by a SaaS platform that helps customers monitor their cloud usage
• Contributed to refactoring the notifications app architecture
• Provided a more robust platform for microservices to interface
• Reduced timeout errors by 30%
• Increased average open rate by 22%.

• Led creation, maintenance, and enhancement of web scrapers, boosting data accuracy, efficiency, and main product uptime SLA by about 20%.
• Automated critical components of a large data pipeline used to process millions of reviews daily, ensuring its efficiency and stability.
• Developed features that impacted company OKRs directly, such as reduced scraped data TTL to production, reduced pipeline execution time, churn prevention, and revenue increase.
• Successfully migrated key features of the legacy codebase from Python 2.7 to Python 3.9+, improving the platform's reliability and future scalability.
• Participated in the architectural decisions of the main project, data pipeline.

• Collaborated with diverse clients from North America and Europe, fostering a global perspective and adaptability in cross-cultural teams, working under Agile methodologies.

• Partnered with NK News, a prominent news agency, to conceive and sustain web scrapers for their news aggregator platform. Successfully overcame intricate challenges involving reverse engineering and anti-scraping countermeasures, particularly for websites from China and North Korea. E

• Played a pivotal role at Sandos, a hotel chain, by enhancing their CRM system

• Developed innovative features that use async operations, improving reliability and increasing efficiency.

• Achieved and maintained Top Rated and 100% satisfaction rate status for over four years

• Developed features for a social networking web application.

• Contributed to web application development and integrated third-party APIs.

• Focused on Java-based web application development and database integrations.

• Built Java based applications for a government institution's budget planning.

• Focused on Java-based web application development and database integrations.