Hire the Best NoSQL Developers
in Romania

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Alex T.

Constanta, Romania

$25/hr
5.0
12 jobs

⏳ Saved founders and users 1000+ hours through fast-loading apps and reliable AI integrations across 7+ SaaSes & Marketplaces 🎖️Top-rated Senior Backend Developer with 7 years of experience. Focused on Multi-Tenant/Marketplace projects and AI Agents(or both) 🔧 I am best at making complex DB queries fast and AI integrations and agents that strike the balance between speed and reliability. 🫡 WHY ME: I like to help you solve your technical challenges by marrying them to business outcomes. Where most developers exist in a bubble of just writing code, I'd also like to implement solutions that would help you succeed. What you'll get: ✅ Jargon-free, NO BS, no-nonsense communication style. Talking the technical to the non-technical. ✅ Zero micro-management: I can think, plan, and propose solutions on my own, yet your input is much welcomed. Your time is better spent marketing or managing the business. ✅ Fluent English Freelancer who communicates ideas in a way that makes business sense 🙌 Industries worked with: Marketplace Style Apps(Jobs, Real Estate, etc), EdTech, FinTech, Integrations 📚 STACK: As a backend developer, I specialize in Node.js, TypeScript, MongoDB, a bit of SQL too, where needed, Trpc, and a bit of Express when needed, Zod, a bit of Next.js and React where needed, Nginx, and Digital Ocean, and a bit of AWS/GCP when needed 💯. 💪🏼 EXTRA EXTRA :) Here are more specific things I'm good at: 📌 Complex MongoDB aggregations designed for querying large amounts of data in a fast way 📌 Making MongoDB typesafe and integrating it with TypeScript and Zod 📌 Experience with nginx, DNS servers & Virtualmin 📌 Web sockets, monorepos - integrated one DB with 2 backends: the main app and our internal dashboard 📌 AI Backend integrations - utilized AI in the backend for data generation & transformation 📌 Experienced with web scraping and external rest api’s 📌 Familiarity with security vulnerabilities such as CSRF, brute force, SQL injections, etc. 📌 Experience with stronger than JWT encryption systems, such as Passetto 📌 Database Migrations: SQL to SQL or SQL to MongoDB 🏁PPS: For examples of my work, make sure to see my portfolio or my intro video, which go into much more detail 📥 JUST MESSAGE ME: Now that you're convinced I'm good at this backend thingy, shoot me a message to start working together 🤝

  • Next.js
  • React
  • Node.js
  • MongoDB
  • ExpressJS
  • TypeScript
  • SQL
  • Back-End Development
  • AWS Development
  • API
  • AI Development
  • AI App Development
  • Supabase
  • API Integration
  • Claude
  • AI Model Integration
  • Chatbot Integration
  • ChatGPT API Integration
  • NestJS
  • NestJS Development
George M.

Bucharest, Romania

$15/hr
4.7
6 jobs

Hello, as a Full Stack Web Developer I specialize in creating dynamic, responsive, and scalable web applications across various industries. My expertise encompasses the entire spectrum of web development, from front-end to back-end technologies, and I am always eager to stay current with the latest trends and innovations. Key skills: - Programming languages: JavaScript, TypeScript, CSS, HTML, Java, SQL - Frontend: React.js, Next.js - Backend: Node.js, Express.js - Database: PostgreSQL, MongoDB, MySQL, Firebase, Supabase - Infrastructure / CI-CD: Git, GitLab CI, GitHub actions, Bitbucket, Docker, NGINX, Laragon - Cloud: Microsoft Azure, Google Cloud

  • NoSQL Database
  • JavaScript
  • CSS
  • HTML
  • SQL
  • React
  • Next.js
  • Git
  • Node.js
  • ExpressJS
  • Firebase
  • Supabase
  • PostgreSQL
  • Full-Stack Development
  • MongoDB
Claudiu C.

Alba Iulia, Romania

$95/hr
5.0
38 jobs

As an ex-FAANG software engineer with ~15 years of industry experience, I've honed my skills across a diverse range of projects, including marketing websites, applications for digital agencies, internal and external tools at Facebook, civic technology initiatives, and SaaS products. I'm passionate about open source, developer experience, clean code, and maintainable software. My expertise includes technologies such as ES6, TypeScript, PHP, HackLang, Python, HTML5, CSS3, GraphQL, REST, Redux, React, and React Native. I have a proven track record of delivering high-quality, scalable, and secure solutions that meet and exceed client expectations. I am also an active contributor to the open-source community and have experience speaking at events like TEDxAlbaIulia and Techsoup webinars. As a freelancer on Upwork, my goal is to apply my extensive knowledge and skills to help you achieve your project goals and ensure your complete satisfaction. Let's discuss how I can bring value to your project and create a successful partnership together!

  • NoSQL Database
  • TypeScript
  • JavaScript
  • SQL
  • React
  • Node.js
  • Front-End Development
  • Web Development
  • React Native
  • SaaS Development
  • GraphQL
  • RDF
  • Back-End Development
  • Redis
  • Full-Stack Development
Alexandru M.

Deva, Romania

$35/hr
5.0
65 jobs

I help companies build robust, modern web applications. While my career spans 18 years of full-stack evolution, my daily workflow is strictly focused on the speed and elegance of modern Laravel and Vue 3. Why hire me? - Architectural Depth: I’ve been building database-driven apps since before most modern frameworks existed. I write code that lasts. - Laravel Mastery: Advanced Eloquent, Service Patterns, and complex API integrations. - Vue.js Specialist: Expert in state management, component architecture, and high-performance frontends. - Full-Cycle DevOps: I handle the app from the first line of code to the Dockerized deployment on AWS/GCP. Technical Snapshot: - Core: Laravel, Vue.js, Node.js, MySQL. - Tooling: Vite, Tailwind, Docker, Gitlab/Github CI/CD. Specialized Capabilities: - Interactive Mapping: Expert implementation of complex geospatial data using Mapbox GL JS and Google Maps. - Real-Time Connectivity: Building low-latency communication via WebRTC and Sockets. - Digital Transformation: Rescuing and refactoring legacy systems into modern, maintainable Laravel architectures.

  • NoSQL Database
  • Laravel
  • React
  • Node.js
  • PHP
  • JavaScript
  • Bootstrap
  • AngularJS
  • Amazon Web Services
  • Vue.js
  • Linux System Administration
  • Google Maps API
  • Vuex
  • Websockets
  • Electron
Igor V.

Brasov, Romania

$40/hr
5.0
55 jobs

I have 15 years of experience in the software development (I'm not bragging, it's a fact). I've designed and implemented various systems from scratch and enhanced legacy systems to meet modern standards. I specialize in both back-end and front-end development, using a wide range of programming languages and frameworks. I have strong expertise in DevOps practices and tooling. Let’s build something great together!

  • Amazon Web Services
  • Node.js
  • JavaScript
  • TypeScript
  • Java
  • Golang
  • PHP
  • NestJS
  • MySQL
  • Symfony
  • Spring Framework
  • Laravel
  • React
  • Angular
  • MongoDB
Rares O.

Bucharest, Romania

$59/hr
5.0
2 jobs

I’m an Upwork Certified Senior Java Back-end Developer with over 8 years of experience helping major companies build and maintain reliable, scalable software systems, mostly in the fintech sector. My core expertise is in Java (8+) and Spring Boot, where I’ve designed and implemented RESTful and message-driven architectures, often integrating technologies like RabbitMQ, IBM MQ, and ActiveMQ. I’m passionate about writing clean, maintainable code and optimizing performance. While my main focus is back-end development, I also have hands-on experience with front-end frameworks such as Angular and React, and have contributed to mobile projects using the Ionic Framework and Flutter. This full-stack perspective allows me to collaborate effectively with diverse teams and understand the end-to-end needs of modern applications. I am experienced with relational databases (PostgreSQL, MySQL, Oracle) but have also gained some experience with NoSQL solutions like MongoDB. For deployment and environment management, I have practical experience using Docker and Kubernetes in both production and UAT settings. In addition to my technical skills, I’m committed to code quality and best practices. I’ve led and participated in code reviews, mentored team members, and always advocate for robust testing, security, and maintainability. I’m committed to making collaboration easy and productive, keeping you updated at every stage of the project. Whether you’re looking to launch a new product, enhance existing features, or improve your code quality and architecture, I bring a proactive mindset and practical solutions to help you reach your goals. Let’s connect and discuss how I can contribute to your next project’s success!

  • Amazon Web Services
  • SQL
  • HTML
  • Hibernate
  • Spring Data
  • Adobe Photoshop
  • Angular
  • React
  • Java
  • CSS
  • WordPress
  • Spring Boot
  • Linux

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