Faisal Mehmood · Senior Backend EngineerBuilding Scalable Backend Architectures & Modern Web Solutions

I build APIs, data sync engines and CMS platforms with Node.js, NestJS, Next.js, Python and WordPress.

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About Me

Engineering Scalable Solutions

I am a Senior Backend Engineer with over 5 years at Revnix, where I was promoted from Frontend Engineer to Lead Backend Engineer. I build backends with NestJS, Python/FastAPI and PostgreSQL, and ship full-stack features with Next.js, React and WordPress.

I am the lead contributor to Nextly, an MIT-licensed, TypeScript-native CMS for Next.js, published on npm. My recent work includes building the backend for Rext AI (a multi-tenant SaaS on FastAPI), architecting the 4RE Marketing Console (NestJS + Drizzle ORM), and engineering enterprise WordPress VIP platforms for clients like the PCI Security Standards Council.

I work remotely and am available across all time zones.

Career Journey

Professional Experience

Three roles at Revnix (formerly Revnix Technologies), from Frontend Engineer to Lead Backend Engineer.

Lead Backend Engineer & Release Manager

Revnix

Jan 2024 – Present

Haripur, Pakistan

Lead backend engineering and releases across production systems, from a multi-tenant SaaS to an open-source CMS.

Key Achievements

Rext AI: Led the backend for a multi-tenant AI content-writing SaaS on Python, FastAPI and PostgreSQL: platform and workspace RBAC, session impersonation, audit logs, subscription billing, workspace credit sharing, Redis caching, webhooks, background jobs, monitoring and CI/CD.
4RE Marketing Console: Architected the NestJS/Drizzle ORM backend that replaced 4 Rivers Equipment's legacy console, live in production since June 2026, with a sync engine for dealer inventory and the John Deere catalog.
Nextly CMS: Lead contributor to an open-source CMS for Next.js. Designed multi-database adapters, JWT auth with token rotation, and field-level RBAC; run release governance for every npm release.
21st Century & 4 Rivers Equipment: Led team of 4 to migrate headless eCommerce platforms to Nextly CMS, cutting infra costs by 95%.
Team Leadership: Managing 8 engineers across 7 production environments serving 50K+ users. Reduced production incidents by 60%.

NestJSFastAPIPostgreSQLDrizzle ORMDockerGitHub Actions

Full Stack WordPress Developer

Revnix

Feb 2022 – Jan 2024

Haripur, Pakistan

Built WordPress platforms for enterprise and mid-sized clients, including WordPress VIP multisite.

Key Achievements

PCI Security Standards Council (WordPress VIP): Engineered a multi-language, multisite enterprise platform with custom Elementor widgets extending core classes.
The National Pulse: Built custom WordPress theme for 100K+ monthly pageviews with Stripe, Google Pay, and Apple Pay.
WP Aegis & WP Grit: Built modern Gutenberg block architecture sites and trained 3 interns on WordPress standards.
Achieved 90+ Lighthouse scores across 10+ client sites using Redis caching and image optimization.

PHPWordPress VIPGutenbergREST APIsStripePerformance Optimization

Frontend Engineer

Revnix

Mar 2021 – Feb 2022

Islamabad, Pakistan

Built responsive, SEO-friendly interfaces for 8+ client projects.

Key Achievements

Built responsive frontends with React, Next.js and SCSS, integrated with REST APIs.
Cut load times by 40% (Time to Interactive from 6s to under 3.5s) with code splitting, lazy loading and component optimization.
Built reusable component libraries documented in Storybook, speeding up frontend delivery by 30%.

ReactJavaScriptSCSSUI/UXSEO

Services

What I Offer

System Architecture

Designing modular backends, REST APIs and data sync pipelines with Node.js, NestJS and Python.

Full Stack Development

End-to-end web application development with modern frameworks like Next.js, React, and TypeScript.

Enterprise CMS Solutions

Custom themes, plugins and headless WordPress builds for enterprise sites, including WordPress VIP.

WordPress Development

Custom theme development, plugin architecture, WooCommerce solutions, and performance optimization for enterprise WordPress sites.

Database Management

Expertise in MongoDB, PostgreSQL, and MySQL, ensuring data integrity and optimized query performance.

Performance Optimization

Improving website load times, Core Web Vitals, and overall system efficiency.

DevOps & CI/CD

Implementing CI/CD pipelines using Docker and AWS to improve scalability and reliability.

Skills

Technical Expertise

Frontend

ReactNext.jsTypeScriptJavaScriptHTMLCSSSCSSTailwind CSSMaterial UIRedux

Backend

Node.jsNest.jsExpress.jsPythonFastAPIPHPGraphQLREST APIs

Database & CMS

MongoDBPostgreSQLMySQLSupabaseWordPressStrapiPayload CMS

DevOps & Tools

DockerAWSGitGitHubCI/CDPostmanVercelFigmaJira

AI-Assisted Development

Claude CodeCursorCodexGLMCodeRabbitGreptileContext EngineeringTest-Driven Development

Industry & Domain

E-CommerceFinTechNews & MediaEnterprise SaaSPayment GatewaysContent PlatformsData Pipelines

How I Work

AI-Assisted, Test-Driven Development

Context First

Every project starts with a context folder: findings, plans, decisions and rules. AI agents and teammates work from the same source of truth.

Planned in Phases

Work is split into phases and tasks, tracked from an overview down to each task, so every change has a clear scope and status.

Tests First

I follow test-driven development: tests describe the behaviour before the code exists, and a task is done when its tests pass.

Guided AI Agents

Claude Code, Cursor, Codex and GLM work from the project's rules and a shared memory file. CodeRabbit and Greptile review the pull requests.

Projects

Featured Work

Rext AI

Live

Lead Backend Engineer

An AI writing platform that researches, writes and publishes SEO articles for agencies and site owners. I led the backend around the AI pipeline: the APIs, background jobs, billing and publishing.

Multi-tenant FastAPI backend on PostgreSQL with two-level RBAC: platform roles and workspace roles
Admin session impersonation and audit logs
Subscription billing with LemonSqueezy, and credit sharing from workspace owners to their members
Background jobs (APScheduler), Redis caching, webhooks and monitoring
Publishing to WordPress and Shopify; Docker deployments with GitHub Actions CI/CD

PythonFastAPISQLAlchemyPostgreSQLRedisAPSchedulerLemonSqueezyDockerGitHub Actions

rext.ai

Dealer inventory

XML feed

John Deere catalog

Product API

Sync engine

Scheduled imports

Matching rules

One machine, one listing

Product API

Materialized products

Next.js storefront

4RE Marketing Console

In production · Private

Lead Backend Engineer · 2024 – present

Inventory and publishing platform for 4 Rivers Equipment, a John Deere dealer. It brings the dealer's inventory feed and the John Deere catalog into one database and serves clean product data to the storefront.

Sync engine that imports the dealer's XML inventory feed and the John Deere catalog on a schedule
Matching rules that decide which listing owns each machine, so nothing is listed twice
Materialized product data served to the Next.js storefront through an API

NestJSTypeScriptDrizzle ORMPostgreSQL

Nextly CMS

Open source

Lead Contributor

Open-source, TypeScript-native CMS for Next.js. Self-hosted, with no vendor lock-in.

Database adapters for PostgreSQL, MySQL and SQLite
JWT auth with token rotation, OAuth and field-level permissions
Pluggable file storage (S3, R2, Vercel Blob, UploadThing)
Runs in production on client sites, including 21st Century and 4 Rivers Equipment

Next.jsTypeScriptNode.jsDrizzle ORMPostgreSQL

nextlyhq.com GitHub npm

21st Century & 4 Rivers Equipment

Live

Lead Backend Engineer

Headless e-commerce sites for two John Deere dealers, first built on headless WordPress and later moved to Nextly.

Next.js storefronts with Stripe payments and filtering across 1,000+ SKUs
Led a team of 4 engineers moving both sites from headless WordPress to Nextly
Cut CMS infrastructure and licensing costs by about 95%

Next.jsNextlyStripeZustand

21st Century Equipment 4 Rivers Equipment

PCI Security Standards Council

Live

Full Stack WordPress Developer

Multi-language, multisite platform on WordPress VIP for the global payment-security standards body.

Custom Elementor widgets built by extending Elementor's core classes
Secure REST API integrations that load dynamic data across every language site
Built without third-party plugin bloat to meet strict security requirements

WordPress VIPPHPElementorREST APIsMultisite

pcisecuritystandards.org

The National Pulse

Live

Full Stack WordPress Developer

Custom WordPress theme and paid membership system for a news site with 100K+ monthly pageviews.

Memberships with Paid Memberships Pro, Stripe, Apple Pay and Google Pay
Custom theme and Gutenberg blocks tuned for Core Web Vitals, with LCP under 2 seconds

WordPressPHPPaid Memberships ProStripeGutenberg

thenationalpulse.com

More work

Log Connectors

Python connectors built on the Airbyte framework that pull logs from source platforms and deliver them to different storage providers.

Python · Airbyte

SmartCourse AI

Course recommender that compares keyword search (TF-IDF) with semantic search (Sentence Transformers).

Python · Flask · scikit-learn

GitHub

WP Aegis & WP Grit

Two WordPress sites built from scratch with Gutenberg blocks and full-site editing (theme.json).

WordPress · PHP · Gutenberg

wpaegis.com wpgrit.com

Get In Touch

I'm always open to discussing new projects, creative ideas, or opportunities to be part of your visions.

Email Me LinkedIn Profile

Remote · Available across all time zones