Hi, my name is

Sayedul Sayem

Senior Software Engineer | Full-Stack & Platform Engineering

I build and scale full-stack web applications, SaaS products, and high-traffic platforms. With 7+ years of experience across frontend, backend, cloud infrastructure, Kubernetes, CI/CD, and observability, I enjoy turning complex engineering problems into reliable, scalable products.

👋 Get In Touch

A Little About Me

I'm a Senior Software Engineer based in Berlin, Germany.

I enjoy building things that live on the Internet, from high-traffic consumer websites and SaaS platforms to open-source software and independent products.

Over the past 7+ years, I've worked across the full software development lifecycle, from architecture and implementation to testing, deployment, observability, and production operations. My work sits at the intersection of full-stack development and platform engineering, where I enjoy building products while also improving the systems and workflows that help teams deliver them reliably at scale.

I've worked on products serving hundreds of thousands to more than a million active users, contributed to platforms reaching millions of monthly visitors, migrated production applications to Kubernetes, automated CI/CD and QA workflows, and improved developer experience for engineering teams.

I also enjoy technical leadership and knowledge sharing. I've led a 10-engineer team, improved engineering delivery efficiency by 50%, and taught developers through training programs focused on Vue.js, Nuxt.js, and WordPress development.

What I Do

Full-Stack Engineering
I build modern web applications and SaaS products across the frontend and backend, focusing on maintainability, performance, and great user experiences.
PHP, TypeScript, JavaScript, Laravel, WordPress, Vue.js, Nuxt.js, React.js
Platform & Infrastructure
I design and improve the infrastructure behind web applications, from containerized workloads and Kubernetes deployments to scalable production environments.
Kubernetes, Docker, AWS, Terraform, Nginx, Traefik, Cloudflare
CI/CD & Developer Experience
I automate the path from code to production, reducing manual work and helping engineering teams ship faster, more reliably, and with greater confidence.
GitHub Actions, Jenkins, CI/CD, QA Automation, Deployment Automation
Performance & Observability
I optimize applications and production systems, investigate bottlenecks, and build visibility into performance and reliability across browser and server environments.
Redis, MySQL, Core Web Vitals, Grafana, OpenTelemetry, Grafana Alloy

Engineering & Product Works

Platform Engineering · High-Traffic Web
VGL Publishing Platform
Engineer and maintain a shared Vue.js/Nuxt.js monorepo powering 15+ high-traffic consumer websites, with individual properties serving approximately 100K–1M monthly visitors. Migrated 8 applications to Kubernetes and built automated, pull-request-driven QA deployment workflows that reduced deployment time by approximately 5–10×.
Vue.js, Nuxt.js, TypeScript, Nitro, Redis, Docker, Kubernetes, Jenkins, GitHub Actions, Traefik, Nginx, Grafana, OpenTelemetry
SaaS · WordPress · Product Engineering
Eazy Plugin Manager
A Laravel/Vue.js SaaS platform with a custom WordPress plugin for centralized remote management of WordPress sites and plugins. Built to simplify the management of large WordPress installations through a unified platform.
Laravel, Vue.js, PHP, WordPress, MySQL, PHPUnit, CI/CD
WordPress · Performance Engineering
HappyAddons
A drag-and-drop addon suite for Elementor that grew to serve 400K+ active users. I worked on product development and performance improvements, optimizing caching, SQL queries, assets, and Core Web Vitals to improve overall platform performance and stability.
WordPress, PHP, JavaScript, jQuery, MySQL, Redis, HTML, CSS, Core Web Vitals
Product Engineering · WordPress · High Scale
MetForm & ElementsKit
Worked on WordPress products used by hundreds of thousands to more than one million active users. Led MetForm through its product lifecycle from wireframing and UI/UX to implementation and support, while contributing to ElementsKit and improving CI/CD pipelines and build systems.
WordPress, PHP, JavaScript, Elementor, CI/CD, Webpack

Where I've Worked

Frontend Developer @ VGL Publishing AG

Berlin, Germany

April 2025 - present

Engineer and maintain a shared Vue.js/Nuxt.js monorepo powering 15+ high-traffic consumer websites, with individual properties serving approximately 100K–1M monthly visitors.
Develop and optimize frontend applications using Vue.js, Nuxt.js, TypeScript, Nitro, Redis, HTML, and CSS, improving application performance and Core Web Vitals across consumer-facing platforms.
Migrated 8 applications from PM2-based VM deployments to Kubernetes, enabling concurrent deployments and horizontal scaling while improving application availability and operational resilience.
Reduced QA deployment time by 5-10x through automated pull-request-driven deployments using Docker, Kubernetes, and GitHub Actions, eliminating manual steps and integrating with Jira for seamless workflow.
Owned and optimized development-to-deployment workflows for a 10+ person engineering team, enabling parallel CI/CD builds and deployments, improving developer experience and release velocity, and establishing browser and server-side observability using Grafana, OpenTelemetry Collector, and Grafana Alloy.

Technical Expertise

Languages:

PHP | JavaScript | TypeScript | SQL | Bash

Frameworks & Libraries:

Architecture & Engineering:

Databases:

PostgreSQL | MySQL | SQLite | Oracle | Firebase

Caching & Performance:

Redis | CDN | Query Optimization | Caching Strategies | Core Web Vitals

Cloud, DevOps & Infrastructure:

CI/CD & Developer Experience:

GitHub Actions | Jenkins | CI/CD | Deployment Automation | QA Environments

Testing & Quality:

Observability:

Frontend:

Open Source & Side Projects

WordPress Core Contributor
Open Source · WordPress

Contributed code to WordPress Core releases 5.9, 6.0, and 6.7, including improvements to image regeneration performance and validation and sanitization for security.
Open Source, PHP, WordPress, Security, Performance
WhatsApp Linux Desktop
Open Source · Linux

An open-source Linux desktop application that I developed and maintained, distributed through the Snap Store and Arch User Repository and used by 27K+ users.
JavaScript, Electron.js, Linux, Desktop Application
Better Page Ruler
Independent Project · Browser Extension

A lightweight browser extension I built to make measuring webpage dimensions quick and convenient for developers and designers. Independently developed and published across the Chrome, Firefox, and Microsoft Edge extension stores.
JavaScript, Browser Extension APIs
elemailer
WordPress · Elementor · Product Engineering

A WordPress email marketing plugin built for Elementor, enabling users to design and send email newsletters directly from the Elementor editor. I led the product development lifecycle from wireframing and UI/UX through implementation.
WordPress, PHP, JavaScript, Elementor, AJAX

See all my work →

What’s Next?

Let's build something great.

I'm always interested in interesting engineering problems, ambitious products, and opportunities to build things that matter.

Whether you're looking for a Senior Software Engineer, a technical lead, or someone who can help turn a complex idea into a reliable product, I'd love to hear from you.

👋 Say Hello