IntroZen BI
A data platform for connecting data sources, building ETL pipelines, processing and preparing datasets, and turning structured data into interactive tables and visualizations.
Independent productView case study
Architecture · Engineering · Product
Zisanur Haque.
Technical Product Architect
& Product Engineer
I connect product thinking, system design, and hands-on engineering to build software around the way people work.
A personal record of work, thinking, and practice.
A little about me01 Selected work
Ideas, made tangible.
Business platforms, data workflows, and interactive products. A closer look at the work and my contribution.
Gazior Ops
An internal operational platform built for Gazior to manage, monitor, and analyze its online activity, customer operations, acquisition, workflows, and business data from a centralized workspace.
GaziorView case study
Product architecture
Visual CMS Platform
A flexible CMS platform being built for Linksol, enabling users to create and manage digital experiences through a visual drag-and-drop interface with configurable content and layout components.
LinksolView case study
Real-Time Social Platform
A full-stack social networking platform supporting user relationships, posts, comments, reactions, privacy controls, notifications, activity presence, and real-time interactions.
Independent projectView case study
02 Perspective
From the problem
to the product.
Curiosity in the details.
Clarity in the whole.
I’m interested in how software takes shape: the problem it starts with, the decisions behind it, and the experience it creates.
My work spans business platforms, data applications, and connected systems—from understanding the workflow to shaping the architecture and building the product.
I’ve worked with teams in the UK and Canada across frontend development, full-stack applications, and business platforms. I care about understanding the domain, making systems understandable, and keeping the implementation maintainable.
My professional journey03 Practice
Connecting the pieces.
The areas I work across, and the principles that guide my decisions.
Product architecture
Business workflows, domain boundaries, data models, and the decisions that connect them.
- System design
- API contracts
- Data modeling
Product engineering
Interactive applications, reusable interfaces, and the backend services behind complete user journeys.
- React / Next.js
- TypeScript
- Python / Django / FastAPI
Data & connected systems
Processing pipelines, real-time events, external integrations, and operational visibility.
- PostgreSQL / MongoDB
- Celery / Redis
- REST / WebSockets
Explore my technical toolkit
Product engineering
Next.js · React · TypeScript · Tailwind CSS · Shadcn/UI · Redux
Backend & systems
Python · Django · FastAPI · REST APIs · WebSockets · Celery · RabbitMQ · Microservices
Data & storage
PostgreSQL · MongoDB · Redis · SQLite · Database Optimization
AI & automation
LLM Applications · AI Workflows · Automation Systems · Prompt Engineering · AI Integrations · RAG Architecture
Infrastructure
Docker · Azure · Azure DevOps · GitHub Actions · CI/CD · AWS · Prometheus · Grafana · K6 · Linux · Monitoring & Performance Testing
Collaboration
Git · Code Reviews · Remote Collaboration · Agile Product Teams
Understand the workflow.
Start with the people, the domain, and the constraints. A useful system begins with a clear problem.
Make the decisions explicit.
Define boundaries, choose an appropriate level of complexity, and keep the reasoning close to the implementation.
Build for the next person.
Care about readable code, consistent behavior, and the ability to maintain and extend the product.
04 Engineering notes
Thinking, in writing.
Explorations of software architecture, product development, and the systems behind everyday applications.
Software Development · 10 min
Building Scalable Multi-Tenant Applications in Next.js Using Dynamic Routing and Schema-Driven Architecture
Cloud & DevOps · 12 min
How GraphQL Can Reduce Cloud Costs: Understanding API Efficiency and Infrastructure Optimization
Cloud & DevOps · 14 min
Prometheus & Grafana: A Practical Guide to Observability for Modern Backend Systems
05 Experience
The work along the way.
Roles and collaborations that have shaped my engineering practice.
Dec 2024 - Present
UI/UX Web Developer
Linksol LTD.London, United Kingdom (Remote | Full-Time)
Architected and developed a modular drag-and-drop CMS platform designed to support multi-service businesses beyond traditional eCommerce use cases.
Responsibilities
- Translated complex business workflows and product requirements into scalable, maintainable software architecture and reusable platform components.
- Collaborated with product managers and backend engineers to define system behavior, API contracts, information architecture, and reliable data flows.
- Designed database structures and technical workflows that enabled efficient integration between product requirements, backend services, and frontend experiences.
- Contributed to Azure DevOps and CI/CD workflows, improving deployment efficiency, release reliability, and the overall production lifecycle.
- Delivered a production-ready business platform that enables organizations to launch, configure, and manage digital services through a flexible operational system.
Sep 2023 - May 2025
Fullstack Developer
Partner UnionLondon, United Kingdom (Remote | Full-Time)
Engineered and evolved a production-grade web platform across frontend, backend, database, and API layers, with a focus on scalability, reliability, and business-critical workflows.
Responsibilities
- Translated product requirements into technical solutions spanning system architecture, backend services, data models, and responsive product interfaces.
- Implemented AI-powered capabilities using the OpenAI API, integrating intelligent workflows into the product while maintaining reliable application behavior.
- Designed flexible database schemas and backend services to support evolving product requirements, efficient data handling, and long-term platform growth.
- Implemented real-time data flows and API integrations to improve application responsiveness and operational visibility.
- Worked across the full product engineering lifecycle—from requirements and architecture through implementation, deployment, and production optimization.
Apr 2023 - Feb 2024
Web Application Developer
Athena Analytics LimitedLondon, United Kingdom (Remote | Full-Time)
Contributed to the architecture and development of data-driven web platforms designed to transform complex business data into usable insights.
Responsibilities
- Translated product and analytical requirements into scalable application structures, reusable components, and maintainable technical solutions.
- Collaborated with cross-functional teams to design product experiences balancing usability, performance, scalability, and technical maintainability.
- Optimized application performance and reliability across devices and environments, improving the overall production experience.
- Built reusable technical foundations and documented systems to support future product development and platform evolution.
- Researched and evaluated emerging technologies to identify practical improvements to platform capabilities and engineering workflows.
Sep 2022 - Jan 2023
React Developer
MindableAlberta, Canada (Remote | Contractual)
Designed and delivered a scalable multi-step quiz platform built for high-traffic digital campaigns and conversion-focused user journeys.
Responsibilities
- Translated product requirements into responsive frontend architecture and integrated backend APIs for reliable end-to-end data flow.
- Implemented analytics and event tracking through Google Analytics and Google Tag Manager, enabling data-driven product and campaign decisions.
- Deployed and maintained the application in production, gaining hands-on experience across development, integration, deployment, and operational reliability.
- Worked across frontend engineering, backend integration, analytics, and deployment to deliver a complete production-ready product experience.
Jul 2022 - Sep 2022
Web Developer
XpertOptRangpur, Bangladesh (Onsite | Internship)
Delivered two production-ready web platforms with a focus on responsive architecture, usability, performance, and maintainability.
Responsibilities
- Translated client requirements into practical technical solutions using modern frontend development practices and reusable components.
- Built fast, user-focused interfaces while considering SEO, performance, maintainability, and long-term digital presence.
- Applied structured development and deployment practices that established a strong foundation in production software engineering.
Continued learning
Foundations & further study.
Selected courses and credentials.
Software Engineering Specialization
Coursera - The Hong Kong University of Science and Technology · July, 2024
Python & Django | The Complete Django Web Development Course
Udemy - Hussain Mustafa, Codestars · August, 2024
Automate Development Tasks with OpenAI's Codex
LinkedIn - Ray Villalobos · July, 2025
n8n - AI Agents, AI Automations & AI Voice Agents (No-code!)
Udemy - AdaptifyAI OU, Krystian Wojtarowicz, DFA Course Academy, Damian Danelczyk · October, 2025
06 In conversation
Good work begins
with a conversation.
I welcome thoughtful conversations about engineering, product ideas, and opportunities to build with people who care about their craft.