Full-Stack Software Engineer
Frontend Lead · Product Architect · Problem Solver
I build scalable products, lead frontend teams, and solve complex engineering problems that drive real business impact.
Based in
Dhaka, Bangladesh
Open to
Senior frontend and full-stack roles
Best at
Scalable product delivery
Operating Principles
Product-minded engineering shaped by delivery pressure, live-system reliability, and measurable business outcomes.
P/01
Lead frontend execution while staying hands-on across the stack
P/02
Build payment, commerce, dashboard, and internal operations products
P/03
Improve performance, SEO, and production reliability for live systems
Subject / Profile
Senior Frontend & Full-Stack Engineer
Building interfaces that carry weight in production.
Current Focus
Scalable frontend systems, product architecture, and live platform delivery.
Career Telemetry
Signal · Stable
Uptime sustained
010.0%
Live payment & government systems
Production issues resolved
020+
Across enterprise applications
Monthly hits served
030M+
National-portal infrastructure
Algorithms solved
040+
LeetCode · Beecrowd · HackerRank
Engineer, frontend lead, and product architect focused on outcomes that survive real-world complexity.
Profile Note
I build software that is visually sharp, operationally stable, and aligned with business pressure from day one.
I build scalable products, lead frontend teams, and solve complex engineering problems that drive real business impact.
I am a Full-Stack Software Engineer with over 3.6 years of professional experience delivering high-performance, production-grade web applications. My expertise spans the modern JavaScript ecosystem — React, Next.js, Node.js, NestJS — along with backend frameworks like Laravel, databases like MongoDB and PostgreSQL, and cloud platforms including Firebase and Google Cloud Platform.
Throughout my career, I have architected and shipped enterprise-grade systems — from national-scale government payment gateways and polytechnic institution platforms to multi-vendor e-commerce ecosystems and HR payroll CRMs. I thrive at the intersection of engineering excellence and business delivery, where clean code meets measurable outcomes.
As a Frontend Lead, I have mentored and guided teams of developers, established coding standards, led code reviews, and driven performance optimization initiatives that directly improved user experience and load times. I bring a product-oriented mindset to every project — thinking beyond tickets to understand business goals, user needs, and system scalability.
Beyond application development, I have deep experience with SEO optimization, SSR/SSG/ISR rendering strategies, authentication and OAuth, production payment gateway integrations (Stripe, PayPal, American Express), event-driven systems with RabbitMQ, Redis-based caching and rate limiting, Elasticsearch-powered search, observability with Sentry, containerized deploys with Docker and GitHub Actions, and AI/LLM integrations with prompt engineering and RAG-based architectures. I approach every challenge with a first-principles mindset and a relentless focus on quality.
Focus 01
Frontend, backend, architecture, and production problem solving in one delivery loop.
Where It Shows
Owns features from UI decision to deploy-ready delivery.
Focus 02
Lead frontend execution, review code, and raise the quality bar across shipping teams.
Where It Shows
Helps teams move faster without losing implementation quality.
Focus 03
Comfortable with compliance, payments, admin systems, dashboards, and national-scale workflows.
Where It Shows
Builds for reliability where business operations depend on it.
Focus 04
LLM integrations, RAG pipelines, and pragmatic use of AI where it creates actual leverage.
Where It Shows
Turns AI into useful product capability, not demo-only polish.
I operate best in teams building complex web products where architecture, delivery ownership, and product quality all matter.
Pillar 01
I lead implementation, set engineering standards, review code, and help teams ship cleaner interfaces with more confidence.
Pillar 02
My strongest work has been in payment platforms, multi-vendor commerce, HR systems, and operational dashboards where reliability is essential.
Pillar 03
I connect production payment gateways (Stripe, PayPal, Amex), OAuth, RabbitMQ message brokers, Redis caches, search engines, analytics, uploads, and AI services into product flows that stay maintainable as complexity grows.
Pillar 04
I use rendering strategy, bundle discipline, and production debugging to keep products fast, stable, and search-friendly.
Domain Coverage
Systems experience across operations-heavy products, role-based dashboards, public service flows, and platforms that have to keep working after launch.
Teams Rely On Me For
Capability map across product engineering, frontend systems, platform delivery, and architecture.
Capability 01
Builds
Shared language for UI logic, APIs, automation, and problem solving.
Capability 02
Used For
Responsive product interfaces, dashboards, SEO pages, and rich interactions.
Capability 03
Used For
APIs, authentication, payments, async jobs, webhooks, and integrations.
Capability 04
Used For
Reliable storage, fast reads, search, cache strategy, and data-heavy flows.
Capability 05
Ships With
Repeatable deployments, hosting setup, cloud assets, and production operations.
Capability 06
Protects
Regression safety, runtime visibility, performance signals, and user experience.
Capability 07
Extends
AI features, analytics surfaces, scalable product architecture, and discovery.
A track record of leading delivery, improving reliability, and shipping systems used under real operational load.
Chapter
01
Frontier Semiconductor Ltd.
Leading frontend development for enterprise-grade applications, driving architecture decisions, and mentoring a team of developers.
What I Drove
Primary Stack
Where The Effort Went
SignalChapter
02
Soft BD Ltd.
Contributed to full-stack development of client-facing applications, working closely with cross-functional teams to deliver production-ready solutions.
What I Drove
Primary Stack
Where The Effort Went
SignalChapter
03
Fliqaindia
Gained foundational industry experience building web applications and contributing to product features in a fast-paced startup environment.
What I Drove
Primary Stack
Where The Effort Went
SignalSelected systems I built or led — from end-to-end product builds to commerce, payments, and government-scale infrastructure.
Case Study / Rec 01
Full-Stack E-Commerce Footwear Platform · Built End-to-End
Role
Sole Full-Stack Engineer · End-to-End
Live storefront
Effort Signals
A production e-commerce storefront for a footwear brand, designed and built entirely from scratch — frontend and backend. A Next.js App Router storefront handles catalog browsing across men's, women's, and children's collections, product detail, cart, and checkout, backed by a custom Python headless CMS that powers products, categories, media, and merchandising content.
Challenges Solved
Business Impact
Shipped a complete, self-owned e-commerce product from an empty repository to a live storefront — demonstrating end-to-end ownership across product architecture, frontend, backend, and deployment.
0%
Built solo
0
Store segments
0
Systems built
Tech Stack
Case Study / Rec 02
B2C Multi-Vendor E-Commerce Platform
Role
Frontend Lead & Full-Stack Developer
Public dev environment
Effort Signals
A large-scale multi-vendor e-commerce ecosystem combining customer storefronts with vendor and admin operations dashboards, production-grade payment workflows (Stripe, PayPal, American Express), RabbitMQ-driven async pipelines, Redis caching, Elasticsearch-powered search, OAuth-based authentication, internationalization, CDN-backed media, analytics, and content-rich commerce experiences.
Challenges Solved
Business Impact
Enabled seamless multi-vendor operations processing thousands of transactions with 99.9% uptime, sub-second search, faster checkout, and significantly improved conversion rates through optimized UX and resilient async infrastructure.
0.0%
Uptime
0
Role dashboards
0
Payment gateways
Tech Stack
Case Study / Rec 03
Whole-of-Government Digital Platform · 25,000+ Sites · 60M+ Monthly Hits
Role
Full-Stack Software Engineer
Official Bangladesh National Portal
Effort Signals
A whole-of-government digital platform hosting 25,000+ websites serving 60M+ monthly hits, providing a single window of information and services across all divisions, districts, upazilas, and unions of Bangladesh.
Challenges Solved
Business Impact
Helped sustain a national-scale platform serving 60M+ monthly hits across 25,000+ government websites, delivering zero-data-loss migrations, optimized multi-cluster performance, and reliable admin tooling used by thousands of government officials nationwide.
0M+
Monthly hits
0K+
Govt sites
0
Data loss
Tech Stack
Case Study / Rec 04
National-Scale Institutional Payment System
Role
Full-Stack Developer
Public login portal
Effort Signals
A government-linked payment and collections platform serving 26 polytechnic institutes across Bangladesh, handling institutional fee collection, stakeholder access, and operational payment workflows.
Challenges Solved
Business Impact
Digitized the payment collection process for polytechnic institutions nationwide, reducing manual processing time by 80% and improving collection efficiency.
0
Institutes
0%
Less manual time
0
Integrations
Tech Stack
Case Study / Rec 05
Centralized Government Official Directory
Role
API Developer / Integration Engineer
Official e‑Directory portal
Effort Signals
Built the core API powering the Bangladesh Government e‑Directory, which centralizes contact information for government officials across ministries, divisions, districts, sub-districts, and unions. The API exposes endpoints that allow mobile apps and web clients to search for officials by name or administrative unit and communicate via call, SMS, or email.
Challenges Solved
Business Impact
The API powers the Bangladesh e‑Directory service used by citizens and government stakeholders, reducing the communication gap between the public and officials while enabling streamlined search and communication workflows.
0
Admin tiers
0
Mobile apps
0/7
Availability
Tech Stack
Case Study / Rec 06
Digital Payment & Financial Services Platform
Role
Frontend Developer
Public login portal
Effort Signals
A digital payment platform focused on secure transactions, operational stability, and compliance-sensitive user flows for financial services.
Challenges Solved
Business Impact
Helped maintain 99.9% uptime and a more dependable payment experience in a production financial system.
0+
Issues resolved
0.0%
Uptime
0%
Compliance-aware
Tech Stack
Additional Delivery Footprint
Project 01
Enterprise Human Resources & Payroll Management
A comprehensive HR management system with automated payroll processing, multi-dashboard interfaces for HR managers, employees, and administrators, leave management, and compliance reporting.
Frontend Lead
Project 02
Vendor, Admin & Customer Dashboard System
A role-based dashboard suite built around the Shoparino8 commerce ecosystem, supporting vendors, administrators, and customers with analytics, uploads, content workflows, and operational tooling.
Frontend Lead
Project 03
Creative Services & Booking Platform
A production web platform for a creative services brand, built to showcase offerings, support service discovery, and present a polished search-friendly customer experience.
Frontend Engineer
Project 04
Official Automotive Website for England Client
A professional business website for a UK-based car dealership, built with the MERN stack and featuring integrated email communication for customer inquiries.
Full Stack Developer
Project 05
Official Website for Hospitality Business
A visually appealing resort website built for a hospitality client, featuring property showcasing and guest inquiry capabilities via email integration.
Full Stack Developer
Project 06
Resort Website with Hostinger Deployment
A resort website built with the MERN stack and deployed on Hostinger, providing an online platform for a Bangladeshi resort to showcase offerings and engage guests.
Full Stack Developer
A live signal of code volume, open-source footprint, language spread, and current engineering momentum.
Algorithmic discipline, competitive practice, and recognition that sharpen day-to-day engineering judgment.
Competitive Signal
Solved Problems
0+
Continuous algorithm practice that reinforces system design, debugging, and implementation precision.
Recognized for outstanding academic performance and technical excellence
Honored with the Vice Chancellor's Award for exceptional academic achievement
Participated and performed in university-level and inter-university programming contests
Solved over 300 algorithmic problems across LeetCode, Beecrowd (URI), and HackerRank
Academic grounding that supported deeper work in algorithms, software engineering, and technical leadership.
Academic Record
Green University of Bangladesh
The work beyond code review comments: alignment, standards, mentoring, and keeping teams moving in the right direction.
Impact 01
Leading a team of 3+ developers at Frontier Semiconductor, establishing coding standards, mentoring junior engineers, and driving architectural decisions.
Impact 02
Consistently identified, debugged, and resolved critical production issues across multiple enterprise applications, ensuring system reliability and client satisfaction.
Impact 03
Worked closely with backend engineers, designers, QA teams, and product managers to deliver cohesive, high-quality products on time.
Impact 04
Drove frontend performance initiatives including bundle optimization, lazy loading, SSR implementation, and Core Web Vitals improvements across projects.
Impact 05
Deep experience integrating payment gateways, authentication systems, AI/LLM services, and third-party APIs into production applications.
Impact 06
Designed scalable frontend architectures supporting multi-dashboard systems, role-based access, real-time data, and complex state management patterns.
A delivery model built around clarity first, maintainability second, and production resilience all the way through.
I start from business goals, user workflows, dependencies, and edge cases so the team solves the right problem first.
Outcome
Better scope, fewer surprises, stronger product decisions
Before complexity spreads, I define component boundaries, state flow, rendering strategy, and API integration patterns.
Outcome
Cleaner architecture and faster implementation
I use code reviews, reusable UI patterns, performance checks, and careful edge-case handling to keep releases stable.
Outcome
Production-ready features with fewer regressions
Once live, I focus on bottlenecks, production issues, SEO/performance opportunities, and feedback-driven refinements.
Outcome
Systems that keep getting better after launch
If you have a role, a product challenge, or a project that needs senior execution, I am open to the right conversation.
Direct Access
The fastest way to reach me is still a clear message and a real problem.
I am interested in senior frontend roles, product-focused full-stack work, and technically demanding systems where architecture, execution quality, and business impact all matter.
ujjalroy7862@gmail.com
Phone
+880-1798421460
Location
Dhaka, Bangladesh
GitHub
github.com/Ujjal-ENG
linkedin.com/in/ujjal-kumar-roy
LeetCode
leetcode.com/u/ujjalroy7862
HackerRank
hackerrank.com/Ujjal191002326
Best Fit
Useful Context
Live Portfolio Signal
Status
Live & Tracking
Reach
Global Audience