Hire the Best MongoDB Developers

I am a FULL STACK ENGINEER with strong experience in building scalable, cloud-based applications using ReactJs, NextJs, JavaScript, Python, Ruby, AWS, NodeJS, NestJS, MongoDB, Stripe, Twilio, OpenAI, iElevenLabs and more. Over the past few years, I have led the development of froentend & backend systems for web and mobile apps, including a social media platform MVP where I designed and implemented serverless architecture using AWS Lambda, API Gateway, S3, and DynamoDB. This allowed the platform to scale smoothly and stay cost-effective. My core strength lies in designing RESTful APIs, setting up database structures, and writing clean, efficient code that performs well even under high traffic. I regularly work with MongoDB and have a solid understanding of database design, indexing, and query optimization. I also have hands-on experience in authentication systems, role-based access control, and integrating third-party APIs. I enjoy solving complex problems and making backend systems faster, more secure, and easier to maintain. I’m comfortable working independently or with cross-functional teams, and I often collaborate with frontend developers to ensure the entire application works smoothly from end to end. While my main focus is backend, I also have experience with React, which helps me understand how backend and frontend connect. If you're looking for someone who can take ownership of the end to end development, set up reliable cloud infrastructure, and deliver robust and well-documented APIs — I’d love to help.

⏳ 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 🤝

Hi! I’m a Full-Stack Developer with hands-on experience in building and maintaining robust, scalable web applications. I specialize in C# and the .NET ecosystem Tech Highlights: Languages: C#, TypeScript, JavaScript, Java Frontend: Angular Architecture & Patterns: MVVM, MVC Backend: ASP.NET, ASP.NET MVC, ASP.NET Web API Databases: PostgreSQL, SQL Server, SQL, MongoDB, NoSQL Cloud: AWS (S3 Bucket), Azure

Hello! I'm a Senior Software Engineer with 6+ years of experience building scalable and maintainable systems. I specialize in Back-End development, focusing on FastAPI, PostgreSQL, and microservice architecture with event-driven and asynchronous design patterns. Frameworks & Technologies: - Back-End: FastAPI, Flask, Django, NodeJS, ExpressJS - Front-End: ReactJS, VueJS - Databases: PostgreSQL, MongoDB, Redis - Tools: Docker, Linux, Git (GitHub/GitLab) Services I Offer: - Back-End Development - Deployment & Hosting (VPS, CI/CD) - Consulting & Mentoring Looking forward to working with you!

I've delivered 6,700+ hours and $100K+ on Upwork with a 5.0 rating across 23 jobs, building production Vue/Nuxt/Next.js apps and, more recently, AI-powered products end to end. Most recently I built Zvid, an AI video/image creation platform: a browser-based editor, a rendering pipeline, a validated JSON project schema, stock-media integrations, and an MCP/API layer that lets AI assistants generate videos programmatically. I designed the architecture, built the editor and rendering infrastructure, and shipped it to production. What I do best: Front-end: Vue 2/3, Nuxt, Next.js, React, TypeScript, Tailwind, complex SPAs, dashboards, editors, e-commerce Back-end: Node.js, GraphQL, REST APIs, PostgreSQL, MySQL, MongoDB, Redis AI integration: LangChain, LangGraph, RAG pipelines, OpenAI/Anthropic APIs, AI agents, MCP servers Automation: n8n workflows connecting your CRM, email, and internal tools Why clients keep me around: my three largest Upwork contracts ran 3,709, 1,896, and 320 hours, clients hire me for a task and keep me for years. I answer within 0–4 hours, write clean, tested code, and explain technical trade-offs in plain language. I'm also in the top ranks on Stack Overflow (17,800+ reputation, 930+ answers), so debugging hard problems is literally what I do for fun. A good fit if you need: a SaaS product built or rescued, AI features added to an existing app, an LLM agent or chatbot that actually works in production, or business processes automated with n8n. Send me a message with what you're building, I'll reply with a concrete plan, not a template.

I build SaaS platforms, billing systems, and internal tools that handle real business operations — not just UI. If your project involves payments, invoices, automation, or complex workflows, I can help you build it the right way from day one. Over the past 5+ years, I’ve built: • Invoice systems with automated tax handling and PDF generation • Subscription & payment workflows (Stripe integrations) • Backend-heavy SaaS platforms with complex business logic • Cron-based automation systems (billing cycles, reports, notifications) • Admin dashboards with real-time data and reporting Most developers focus on UI. I focus on the backend logic that keeps your business running reliably. 💡 What I can help you with: • SaaS products (end-to-end architecture & development) • Billing, subscriptions & payment systems • Invoice generation & tax calculation systems • Internal tools & admin dashboards • Automation (cron jobs, APIs, integrations) ⚙️ Tech Stack: Next.js, React, Node.js, NestJS PostgreSQL / MongoDB Stripe, REST APIs, GraphQL TypeScript, Tailwind AWS, Vercel, Docker 📈 Selected Work: • Built an invoicing system with automated tax handling and PDF generation • Implemented cron-based billing automation workflows • Developed backend logic for complex shift-based calculations • Created scalable APIs powering analytics dashboards 🏢 Visitor Management System (SwipedOn-like) Built a full-scale visitor management system similar to :contentReference[oaicite:0]{index=0}, designed for real-world office environments. Key features: • Real-time visitor check-in/check-out tracking • Badge generation and identity capture • Host notifications (email/SMS alerts) • Admin dashboard with logs, analytics, and reporting • Secure, role-based access control Used for: • Corporate offices • Co-working spaces • Secure facilities 📅 Booking & Scheduling Platform • Developed a booking system with scheduling, user management, and payment flows • Built APIs handling availability, reservations, and real-time updates • Designed scalable backend for handling concurrent bookings --- If your project involves real business logic, payments, or automation — send me a message with your idea or problem. I’ll suggest the best approach before we even start.