Nayon Kanti Halder
Full Stack Software Engineer
Professional Summary
Results-driven Full Stack Software Engineer with 3+ years of experience designing and delivering scalable web and mobile applications. Proficient in React.js, Next.js, React Native, Node.js, Express.js, PostgreSQL, and MongoDB. Skilled in RESTful API design, state management with Redux Toolkit, CI/CD pipelines, and collaborating with international clients to ship high-quality, production-ready software. Passionate about performance optimization, clean architecture, and building products that create measurable business impact.
Technical Skills
Programming Languages: JavaScript (ES6+), TypeScript, C, C++
Frontend: React.js, Next.js, HTML5, CSS3, Tailwind CSS, Socket.io
Backend: Node.js, Express.js, RESTful APIs, Socket.io, Nest.js
Mobile: React Native, Expo, Nativewind, Cross Platform
Databases: PostgreSQL, MongoDB
State Management: Redux Toolkit, RTK Query, TanStack Query, Context API
Integrations: Stripe, SSLCommerz, AI Chatbot APIs, JWT Authentication, Firebase Auth
Tools & Technologies: Git, GitHub, Postman, Figma, VS Code, Docker, Linux VPS
Cloud / Deployment: Vercel, Docker, Linux VPS Setup, AWS
Professional Experience
Software Engineer · Join Venture AI
January 2025 — Present · Dhaka, Bangladesh- Architected and delivered scalable full-stack features using Next.js, Node.js, Express.js, PostgreSQL, and MongoDB, reducing page load times by 30% through server-side rendering and API optimization.
- Designed and maintained secure RESTful APIs serving 10,000+ requests/day; implemented Redux Toolkit and RTK Query for predictable, performant state management.
- Collaborated directly with international clients across multiple time zones to gather requirements, present technical solutions, and iteratively deliver features aligned with business objectives.
- Improved SEO scores by 40% through structured metadata, Next.js SSR, web accessibility enhancements, increasing organic traffic.
- Established Git-based code review workflows and agile practices, reducing bug escape rate and accelerating release cycles.
Junior Software Engineer · Innovate International Ltd.
March 2024 — December 2024 · Dhaka, Bangladesh- Built and maintained production web applications using React.js, Next.js, Node.js, Express.js, and MongoDB, supporting 5,000+ active users.
- Designed and integrated RESTful APIs enabling seamless communication between frontend and backend, reducing integration issues by 25%.
- Diagnosed and resolved critical performance bottlenecks, cutting average API response time by 35%.
- Participated in full SDLC: requirements analysis, development, code review, testing, and deployment via Git-based CI/CD workflows.
Featured Projects
StreamLab↗ — AI-Generated Movie StudioNext.js, Node.js, MongoDB, OpenAI API, Tailwind CSS
- Developed an AI-powered platform enabling users to generate movie concepts, scripts, and visual storyboards using OpenAI APIs.
- Built a real-time collaboration layer with Socket.io, supporting simultaneous multi-user editing sessions.
- Implemented Stripe payment integration for subscription-based access control.
Simfrii↗ — Virtual SIM Card Management SystemReact.js, Node.js, Express.js, PostgreSQL, REST APIs
- Engineered a SIM card management platform enabling users to activate, manage, and top up virtual SIM cards without physical hardware.
- Designed a secure backend with JWT authentication and role-based access control for admin and end-user flows.
TWSolutions↗ — AI Receptionist PlatformNext.js, Node.js, MongoDB, AI Chatbot API, WebSockets
- Built an AI-powered receptionist system capable of handling inbound calls, scheduling appointments, and providing automated responses 24/7.
- Integrated third-party AI voice APIs with a custom dashboard for businesses to configure conversation flows.
SpaAcademy↗ — Learning Management SystemNext.js, Node.js, Express.js, PostgreSQL, Stripe
- Developed a full-featured LMS with course creation, video streaming, progress tracking, and quiz modules.
- Integrated SSLCommerz payment gateway for course enrollment with automated enrollment confirmation.
Education
United International University2019 — 2023
Bachelor of Science in Computer Science and Engineering
Dhaka, Bangladesh
Certifications & Additional
- HackerRank: Problem Solving, JavaScript, Database, SQL, React
- Completed advanced training in React.js, Node.js, and full-stack application development
- Active open-source contributor; portfolio & code samples at github.com/nrbnayon