Taras N.

✅ Top Rated Plus on Upwork (Top 3%) ✅ 8+ years of experience as a Back-End Developer building scalable systems ✅ 3000+ hours delivered as a Backend Developer ✅ 30+ projects delivered, turning ideas into working software from start to finish 🚀 What I Do as a Backend Developer As a Senior Backend Developer, I design and implement scalable, secure, and high-performance back-end systems. My solutions support products used by millions of users worldwide. Key areas where I bring value as a Backend Developer: - API Development – REST & GraphQL APIs, versioning, error handling, and caching - Microservices Architecture – modular, distributed back-end systems designed for scaling - Cloud Infrastructure – AWS, GCP, and Heroku environments managed by me as a Back-End Developer - Database Engineering – PostgreSQL, MongoDB, MySQL, Redis optimized for speed and reliability - CI/CD & DevOps – GitHub Actions, GitLab CI/CD, Docker, Terraform for deployment automation - Security & Authentication – JWT, OAuth 2.0, RBAC, and secure login flows developed as a Backend Developer 📊 Real Business Impact as a Backend Developer As a Back-End Developer, I don’t just write code — I create back-end solutions that transform into measurable results. 🔐 Secure Login System – Built a credential-stuffing–resistant login with NestJS + Redis, now protecting millions of logins monthly. ⚙️ Dynamic Pricing Engine – Created back-end logic for personalized pricing (user segments, membership tiers, promotions), increasing conversions by 25% for an e-commerce platform. 📡 Real-Time Messaging API – Developed a back-end system with Node.js and WebSockets, enabling secure, real-time communication for a SaaS dashboard. 📈 Enterprise Dashboards – Architected the back-end for a monitoring tool used by 100+ engineers, improving productivity tracking and release cycles. 🤖 AI-Integrated Backend – As a Backend Developer, I integrated ML models into Node.js services to deliver personalized insights and review summaries, cutting manual work by 70%. 🧵 Workflow Automation System – Designed a back-end platform that automated logo approval processes, saving hundreds of hours in operational costs. 🌍 Industries Where I Work as a Back-End Developer 🏦 Fintech – payments, secure authentication, fraud prevention 🤖 AI & SaaS – scalable SaaS platforms and ML integrations 📱 B2B Tools – dashboards, workflow automation, collaboration systems 🛍 E-commerce – personalized pricing, order management, inventory automation 🧑‍💼 Enterprise Systems – back-end infrastructure for large-scale applications 💡 Why Clients Choose Me as Their Backend Developer ✔ Proven Success on Upwork – 3000+ hours, Top Rated Plus, 100% Job Success ✔ Scalability Expertise – back-end architectures designed for growth ✔ Security First – as a Back-End Developer, I prioritize stability and data protection ✔ Business-Oriented Approach – technical depth aligned with business outcomes ✔ Collaborative Workflow – clear communication with product managers, frontend teams, and stakeholders 🛠 Backend Developer Tech Stack Languages & Frameworks: Node.js, NestJS, Express.js, Fastify, TypeScript, JavaScript Databases: PostgreSQL, MySQL, MongoDB, Redis, Knex.js APIs: REST, GraphQL, JWT, OAuth 2.0, WebSockets Cloud & DevOps: AWS (EC2, S3, RDS, Lambda, VPC, IAM, CloudFront), GCP, Terraform, Docker, GitHub Actions, GitLab CI/CD Testing & Quality: Mocha, Chai, integration/unit testing, coverage tracking Monitoring & Integrations: Sentry, CloudWatch, Twilio, Google APIs, Segment 🔍 Ideal Projects for Me as a Backend Developer ✔️ SaaS platforms scaling rapidly and needing robust back-end foundations ✔️ MVPs requiring fast and clean delivery from a Back-End Developer ✔️ Real-time apps (chat, dashboards, notifications) powered by back-end systems ✔️ Migration projects moving from monoliths to microservices, led by a Backend Developer 🤝 Let’s Work Together If you’re looking for a Senior Backend Developer who can deliver scalable, secure, and business-focused solutions, I’d love to connect. 📩 Let’s discuss how my back-end expertise can bring value to your project.