Hi, I’m Rareş Stoica, a backend-focused software engineer specializing in Node.js and AWS. Over the last 4+ years I’ve built scalable APIs and optimized infrastructure for high-growth products, cutting processing times from minutes to milliseconds and delivering significant database speedups. I’m passionate about clean architecture, mentoring, and shipping meaningful features across AI/dev tools, gaming/entertainment, and climate tech. I enjoy collaborating with teams, leading onboarding, and turning complex requirements into robust, maintainable systems.

Rareş Stoica

Hi, I’m Rareş Stoica, a backend-focused software engineer specializing in Node.js and AWS. Over the last 4+ years I’ve built scalable APIs and optimized infrastructure for high-growth products, cutting processing times from minutes to milliseconds and delivering significant database speedups. I’m passionate about clean architecture, mentoring, and shipping meaningful features across AI/dev tools, gaming/entertainment, and climate tech. I enjoy collaborating with teams, leading onboarding, and turning complex requirements into robust, maintainable systems.

Available to hire

Hi, I’m Rareş Stoica, a backend-focused software engineer specializing in Node.js and AWS. Over the last 4+ years I’ve built scalable APIs and optimized infrastructure for high-growth products, cutting processing times from minutes to milliseconds and delivering significant database speedups.

I’m passionate about clean architecture, mentoring, and shipping meaningful features across AI/dev tools, gaming/entertainment, and climate tech. I enjoy collaborating with teams, leading onboarding, and turning complex requirements into robust, maintainable systems.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
See more

Language

English
Advanced
Romanian, Moldavian, Moldovan
Fluent

Work Experience

Full Stack Engineer at The Sandbox / QED
January 1, 2021 - October 28, 2025
Optimized avatar import for ~3,000 files (~5MB each) via AWS S3 streaming & parallelism; reduced runtime from 30 min to 15 min. Refactored event-map queries (PostgreSQL) with joins and indexing, reducing response time from 1 min to 50 ms. Built avatar customization features (Vue.js, Three.js) with live previews and equipment presets. Mentored junior developers and led onboarding for import pipeline architecture and feature delivery.
Junior Backend Engineer at Hey Lady
January 1, 2022 - October 28, 2025
Integrated a new payment provider; migrated 100% of subscriptions with zero data loss. Implemented subscription lifecycle features (pause/cancel/renew) to improve retention and flexibility. Executed billing DB migration to enhance scalability and data integrity.

Education

Engineer Degree, Computer Science at Polytechnic University of Timişoara, Romania
January 11, 2030 - January 1, 2023

Qualifications

Cambridge English FCE
January 1, 2017 - October 28, 2025

Industry Experience

Software & Internet, Gaming, Media & Entertainment, Professional Services