10/21/2026 updated

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Software Development Engineer | Java, Python, AWS, Microservices

Deva, Romania
Only remote
Bachelor Degree in Computer Science
Deva, Romania
Only remote
Bachelor Degree in Computer Science

Profile attachments

Dumitrana_Mihnea_Resume (1).pdf

Java (Programming Language)Amazon Web ServicesCloud EngineeringExtract Transform Load (ETL)DevOpsPython (Programming Language)Software EngineeringTypeScriptSpring CloudReact.jsSpring BootAWS LambdaAWS AppSyncAWS ECSFastAPIFull Stack DevelopmentAmazon Simple Queue Service (SQS)Data PipelineMicroservices
Cloud & AWS Services
Extensive experience with AWS services including Lambda, Batch, ECS, S3, and Step Functions for building and managing large-scale data transportation pipelines processing hundreds of TB per minute.

Backend Development & Microservices
Strong background in architecting and developing Java/Spring microservices, including migration of large legacy C/C++ monoliths into stateless, scalable microservice architectures with A/B testing and zero-regression guarantees.

Full-Stack Development
Proficiency in full-stack development using React/TypeScript on the frontend and FastAPI/Node.js on the backend, including design of event-driven message buses and hybrid frontend architectures for enterprise-scale applications.

Database Engineering & Query Optimization
Advanced knowledge of Oracle and MySQL databases, including custom hashing strategies for object-level equality comparisons that reduced query latency from 42 seconds to 1.5 seconds on large tables.

ETL Pipeline Management
Ownership and management of critical ETL pipelines, overseeing daily derivations and aggregations of high-value metrics for downstream AI/ML, Marketing, and Finance consumers.

Machine Learning Integration
Development of full-stack applications leveraging machine learning, including a real-time American Sign Language to speech translation system using FastAPI and JavaScript.

Python & Web Scraping
Development of scalable Python web scrapers using Selenium with layered OOP architecture applying SOLID principles, dependency injection, and polymorphism for data aggregation across multiple e-commerce platforms.

DevOps & Developer Tools
Practical experience with Git, Docker, Unix/Linux, and Azure for development, containerization, and deployment workflows.

Accessibility & UI/UX Compliance
Independent resolution of UI/UX tickets to deliver strict WCAG compliance, significantly improving product accessibility across main web applications.

Experience

Professional experience0 - 5 years
Freelancer since2026

Languages

GermanBasic knowledgeEnglishFluentRomanianNative speaker

Project history

Full-Stack Developer

Unmute-IT (Project)
Led development of a full-stack FastAPI and JavaScript application leveraging machine learning to translate American Sign Language into speech in real-time. Engineered the RESTful backend architecture to serve the AI model to the client interface. Awarded 1st place and two secondary prizes out of 60 competing teams at the HackTM 2023 hackathon.

Python Developer

Distributed Web Scraper (Project)
Developed a scalable Python web scraper using Selenium to aggregate and filter product data across multiple e-commerce platforms. Implemented a layered OOP architecture applying SOLID principles, dependency injection, and polymorphism for maintainability and scalability.

Software Development Engineer I

Amazon
Managed operational stability of a massive-scale data transportation pipeline processing hundreds of TB/min using AWS Lambda, Batch, ECS, and Step Functions. Facilitated parallelized data routing between internal storage and native S3 environments with SNS integration. Took ownership of a critical ETL pipeline overseeing daily derivations and aggregations for AI/ML, Marketing, and Finance consumers. Ensured strict SLA compliance for highly partitioned transactional datasets.

Software Engineer

8x8 International
Engineered an advanced Hibernate ORM workaround for variable runtime API filtering on Oracle DB custom object types, reducing query latency from 42s to 1.5s. Architected extraction of 150+ stateful functionalities from a legacy C/C++ monolith into Java/Spring microservices. Designed a hybrid frontend architecture enabling React/TypeScript UI to operate concurrently with a legacy PHP/JS system. Delivered strict WCAG compliance by resolving UI/UX tickets across the main web application.

Certificates

Cambridge English Certificate - C2 Level

Cambridge English

2021


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