Petru Rares Sincraian
Software Engineer
I’m an optimistic and hardworking software engineer who firmly believes success is 90% work and 10% luck.
I love building cool stuff and delivering it to customers—faster, better, and with a little style. While I proudly call myself a backend engineer, I’m not afraid to break the front-end or infrastructure when the job demands it.
GitHub Projects
Latest Blog Posts
Career Timeline
Amazon
Software Engineer
2022 - Present
- Led the deprecation and modernization of a 20+ year-old system, collaborating with cross-functional tech teams to streamline processes. Stack: Java, RDS, Event-Driven architecture, and other AWS services
- Designed and implemented a modular monolith architecture, simplifying system complexity and reducing maintenance overhead. Stack: Java, Modular Monolith, DDD, RDS, SQS, and other AWS
- Led the analysis and development of a critical internal payroll tool, successfully deployed across 63+ countries, addressing each country specific requirements. Stack: Java, DynamoDB, and other AWS services
Glovo
Sr. Software Engineer
2022 - 2022
- Built a Python web service to automate the discovery and creation of data products, reducing manual effort by 50%. Stack: Python, Flask, AirFlow, SnowFlake, and AWS
Ocado
Sr. Software Engineer
2019 - 2022
- Led the development of the first customer segmentation service, enabling personalized experiences for millions of customers. Stack: Java, Spring, DynamoDB, Event-Driven architecture, BigQuery, and other AWS services
- Wrote guidelines on input validation for different languages and alphabets, used by all tech teams to support international customers, including a new customer from Japan.
- Implemented an internal search to access internal tools faster. It has been used by 35% of internal employees. Stack: React and CloufFront
Prope
Founder
2018 - 2020
- Developed and launched a website that connected 20+ shops with 1000+ customers, increasing local business visibility.
- Built the backend using Python and Flask, hosted on DigitalOcean, and developed the frontend and mobile apps with React and React Native.
Ulabox
Software Engineer
2017 - 2019
- Built and deployed the first recommendation system, increasing the average order value by 2% for customers. Stack: Python, Flask, BigQuery, Pandas
- Developed a Delivery Windows module, providing users with flexible delivery options based on complex business constraints. Stack: PHP, Symfony, MariaDB
- Built a Purchasing System for easier supplier interactions, optimizing internal processes. Stack: PHP; Symfony, MariaDB
Google Summer of Code
Intern Software Engineer
2016 - 2016
- Contributed to the FFmpeg project, improving testing accuracy and system stability. Stack: C, Python, Docker