Hello, I’m
Fayaj Nakib
Backend engineer with 2 years of production experience owning the core API of a live EV battery-swap platform serving multiple operator classes. Strength in REST API architecture, geospatial and IoT-telemetry systems, payment integration, and PostgreSQL performance — with full-stack delivery in React / Next.js. Backed by a competitive-programming foundation (4× ICPC Asia Preliminary) and a bias toward reliable, transaction-safe systems.
About Me.
I build systems designed to stay reliable — not just to ship fast, but to work flawlessly when things get complicated.
Working on Cassetex's IoT fleet platform taught me what “production-ready” really means. When GPS telemetry, real-time vehicle tracking, bKash payment webhooks, and multi-tenant access control all need to work together without failure, there's no room for shortcuts. That environment shaped how I think about architecture, error handling, and observability from day one.
I started in competitive programming — four ICPC Asia Preliminary rounds trained me to break hard problems apart under pressure. That mindset carries into every system I design. Outside engineering, I coordinate film and photography events and shoot documentary work, which keeps me thinking about composition and clear storytelling — surprisingly useful when designing APIs.
What I care about
Work Experience.
My professional journey building products and systems in production environments.
Associate Software Engineer
- ▸Own the platform's core REST API (Laravel 12 / PHP 8.2 / PostgreSQL), delivering 150+ endpoints across fleet operations, IoT telemetry, payments, geofencing, and hardware control through a scalable service-oriented architecture.
- ▸Built a real-time geofencing system for EVs that automatically shuts down a vehicle when it leaves its permitted zone and re-enables it on return using GPS tracking and Tile38, with an automatic fallback that keeps enforcement working during network outages.
- ▸Engineered an ACID-safe order and payment platform with atomic multi-record transactions, rollback guarantees, and priority-based payment resolution across wallet and swap-credit balances, eliminating partial-write and double-charge scenarios.
- ▸Designed and secured three authentication flows on a unified API surface (Azure AD SSO, driver PIN authentication, and scoped IoT API keys), complemented by custom RBAC middleware and comprehensive audit logging.
- ▸Delivered the operator-facing platform end-to-end, including a Next.js 15 admin dashboard with a custom geofence editor, telemetry analytics, permission-aware UI rendering, and an installable field-officer PWA.
- ▸Automated operational reporting through a Python-based data pipeline (pandas, openpyxl, Microsoft Graph API) and integrated bKash payments with idempotent, race-condition-safe reconciliation workflows.
- ▸Managed deployment and server operations across three VPS environments (two production, one staging), including Nginx configuration, environment setup, SSL certificates, Git-based releases, PostgreSQL provisioning, backups, queue workers, cron jobs, and production incident handling.
Junior Software Engineer
- ▸Built client-facing Laravel + React / Next.js applications end-to-end in a cross-functional Agile team, from requirements gathering through deployment.
- ▸Refactored three legacy modules with cleaner object-oriented patterns, eliminated N+1 query issues, and introduced targeted indexing to improve API response times; resolved production bugs under time pressure and maintained clear technical documentation.
Featured Work.
A selection of projects I've built — from web applications to research work and systems design.
DevBoard — Developer Project & Task Tracker
Workspace-scoped multi-tenant SaaS with role-based access control (owner/admin/member/guest) and per-project membership gating, enforced through a shared authorization layer across all controllers. Features an event-driven automation rule engine — configurable per-project triggers (task created, status changed, assignee added, due-date reached) firing async actions via queued jobs with a persisted execution log. Production-grade outbound webhook system: HMAC-SHA256 signed payloads, exponential-backoff retries (3 attempts, 30/120/300s), and a per-delivery audit record. GitHub integration with task-to-issue linking and inbound webhook sync that updates task state on PR merge. Pusher-based real-time updates with polling fallback; multi-stage Docker build and GitHub Actions CI running PHPUnit against a real Postgres service. Demo: demo@devboard.app / demo1234
Self Portfolio
A modern, responsive portfolio website showcasing skills, projects, and experience. Built with Next.js and featuring smooth animations, dark mode, and a clean, professional design.
Other Projects (4)
IELTS Preparation App
Developed an application with reading, writing, and vocabulary modules; implemented Firebase authentication and database for seamless user experience.
I-SORT (Research)
An IoT-enhanced autonomous product sorting robot for eCommerce. Designed an automated sortation system for warehouse operations, improving sorting accuracy and throughput. Reduced manual labor requirements and optimized space usage while providing real-time product tracking.
Human Disease Prediction
Built an SVM-based system predicting diseases with 85% accuracy from symptom input. Utilized machine learning algorithms to provide accurate medical predictions.
Car Dealer Web App
Developed an online car inventory and sales management platform with comprehensive features for managing vehicle listings, sales transactions, and customer interactions.
My Skills.
Technical expertise I've developed across languages, frameworks, and tools.
Backend Development
Databases
Engineering Practices
Frontend Development
DevOps & Cloud
Soft Skills
Education.
Academic qualifications and the institutions that shaped my foundation.
B.Sc.(Engg) in Computer Science and Engineering
H.S.C: Science
S.S.C: Science
Certifications.
Professional certificates and courses from leading institutions.
Honors & Awards.
Recognition received for academic excellence and extracurricular achievements.
Get In Touch.
Have a project in mind or want to chat? I'm open to new opportunities and collaborations.
Reach me directly via any of these channels:
Send a Message
Ready to build something great?
I specialize in scalable web applications and production-ready systems. Let's collaborate and bring your vision to life.