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Hey, I'm Kayes 👋

Full-Stack

Developer & SaaS Builder

I build and ship production SaaS products — from React dashboards to Spring Boot microservices to AI-powered workflows.

About Me

Full-Stack Developer · Project Lead · SaaS Builder

I'm a full-stack developer who builds and ships SaaS products end-to-end — from React dashboards to Spring Boot microservices to AI-powered workflows. With professional experience across agency, startup, and founder settings, I bring both technical depth and ownership mentality to every project.

At AaladinAI, a software agency serving international clients, I was hired as a Frontend Engineer but quickly became the person who understood the entire project better than anyone else on the team. When we lost our product manager, I stepped up — coordinating priorities, defining requirements, and driving timelines for Fuel AI, a 24+ page AI-powered CRM with multi-platform communication and a drag-and-drop AI workflow builder.

Before that, I helped transform Golden Vault from a concept into a working product as a founding team member — rebuilding the entire frontend and building the mentorship system from scratch.

Right now, I'm building Nexus Agent — a multi-tenant messaging SaaS platform that routes messages across Email, WhatsApp, Discord, and Notion through a single API. The Connection Brain is production-ready with Spring Boot 3.x, hexagonal architecture, circuit breakers, AES-256-GCM encryption, and 68+ passing tests.

I'm pursuing my B.Sc in Software Engineering at Daffodil International University and am open to full-stack developer roles — remote or Dhaka-based. I'm also available for freelance projects.

Skills & Technologies

ReactNext.jsTypeScriptJavaScriptTailwind CSSHTML5CSS3Node.jsExpress.jsNestJSJavaSpring BootPythonFastAPIPostgreSQLMongoDBRedisDockerGitVercelNginxRAG PipelinesLangChainLLM IntegrationPrompt EngineeringJWT AuthFirebaseStripeFramer MotionReact Flow
3+
Years Experience
8+
Projects Shipped
2
Countries Served
68+
Tests Passing

Work Experience

My professional journey across agencies, startups, and founder roles.

July 2024 – March 2025· Dhaka, Bangladesh

Frontend Developer & Project Lead

AaladinAI

Software development agency delivering contracted projects for international clients including Scale Build AI (New York). Officially hired as Frontend Engineer; informally served as co-product manager and project lead.

  • ▸Led the Fuel AI project as de facto product manager — coordinated team priorities, defined requirements, and drove timelines for a 24+ page SaaS platform
  • ▸Built the entire frontend dashboard using Next.js, React, TypeScript, Tailwind CSS, and ShadCN
  • ▸Contributed to NestJS backend API endpoints and Python AI brain for automated lead engagement
  • ▸Implemented a drag-and-drop visual funnel editor (React Flow) for non-technical users
  • ▸Integrated JWT authentication with role-based access control and 2FA backup codes
Next.jsReactTypeScriptTailwind CSSNestJSPythonReact FlowPostgreSQLMongoDB
November 2023 – June 2024· Dhaka, Bangladesh

Frontend Developer

Golden Vault

Early-stage education platform startup built around challenge-based learning, mentorship, and performance tracking.

  • ▸Redesigned the entire UI/UX — improved usability, mobile responsiveness, and visual appeal
  • ▸Rebuilt the frontend with React, Next.js, and Tailwind CSS, improving page load speed and learner retention
  • ▸Built the complete mentorship system — admin panel for mentors, booking sessions, managing relationships
  • ▸Collaborated directly with the founding team to ship features that transformed concept to product
ReactNext.jsTypeScriptTailwind CSSNode.jsMongoDB
May 2025 – Present· Dhaka, Bangladesh

Founder & Lead Developer

Nexus Agent

Architecting and building a multi-tenant messaging SaaS platform that unifies business communication across Email, WhatsApp, Discord, Notion, Slack, and SMS through a single REST API.

  • ▸Architected a Spring Boot 3.x microservice using hexagonal (Ports & Adapters) architecture in Java 21
  • ▸Built platform adapters for SendGrid, Meta Cloud API (WhatsApp), JDA 5.x (Discord), and Notion API
  • ▸Implemented Resilience4j circuit breakers, Bucket4j rate limiting, AES-256-GCM encryption
  • ▸Designed outbox pattern with exponential backoff retry and virtual thread-based async dispatch
  • ▸Achieved 68+ passing tests with full Docker Compose deployment — all 8 production checks passing
Java 21Spring Boot 3.xHexagonal ArchitecturePostgreSQL 17Resilience4jDockerAES-256-GCM
2024 – Present· Remote

Freelance Full-Stack Developer

Self-Employed

Delivering end-to-end web solutions for international and local clients — from requirement gathering to deployment.

  • ▸Built a complete website for Roshan Transport (Australia) with TinaCMS for client-managed content
  • ▸Developed a company showcase for Vector Power (Bangladesh) with modern animations and product presentation
  • ▸Managed full project lifecycle: requirements, design, development, testing, deployment, and handoff
Next.jsTypeScriptTailwind CSSTinaCMSFramer Motion

Get in Touch

Have a project in mind or want to discuss an opportunity? Drop me a message and I'll get back to you as soon as possible.