v1.0.4 // GETTING STARTED

Engineering resilient architectures and high-performance services.

I am a Full Stack Engineer & Systems Architect. I build reliable distributed engines, real-time message streams, and optimize performance benchmarks across full stack interfaces. Focused on writing correct, clean, and highly observable code.

md. shahriar mehedi@engine-node:~
C:\Users\Desktop>ShahriarM
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OS: Next.js 16 (App Router) & Node.js Runtime
Shell: Zsh (Distributed Workflows)
Uptime: 5+ years of architecture experience
CPU: Next.js 16 & React 19 Engine
RAM: BullMQ / Redis Cache Task Aggregations
SPECIALTIES: B2B SaaS MVPs, AI Ingestion pipelines, PostgreSQL Optimization
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02. PRINCIPLES

Engineering Tenets

Code must survive production workloads. These architectural and lifecycle directives drive how I approach system designs, observability, and validation testing.

Scalability First

Build microservices with stateless logic, distribute tasks via task queues (BullMQ/Redis), and scale cloud infrastructures horizontally.

Data Integrity & Performance

Optimize PostgreSQL schema designs, execute partition queries, utilize database indices, and implement multi-layer Redis caching structures.

Asynchronous Operations

Offload long-running workloads, automate business tasks asynchronously, and implement optimistic UIs with WebSocket push aggregates for sub-100ms latency.

Core Tech Stack

Languages

TypeScript / JS
Python
SQL (Postgres)
HTML5 / CSS3

Infrastructure

Next.js (App Router)
Node.js / Express
Docker
AWS (S3, EC2, Lambda)

Datastores

PostgreSQL
Redis (Cache / PubSub)
BullMQ (Queuing)
MongoDB
03. EXPERTISE

Focus & Competencies

Specialized solutions for infrastructure scalability, real-time analytics, and high-performance engineering efficiency.

Full Stack SaaS Architecture

Architected and scaled flagship multi-tenant SaaS platforms from zero to production within aggressive 14-to-21 day timelines for early-stage US/UK startups.

Next.js 16TailwindCSSShadcn/UIReact 19Node.jsPrisma ORMPostgreSQLMicroservicesMulti-tenancyCloud InfrastructureAI Analytics DashboardsFinancial UtilitiesScalable ApplicationsEnterprise Solutions

Asynchronous Ingestion Streams

Developed high-concurrency event brokers using WebSockets, Redis Pub/Sub, and BullMQ worker nodes to process background workloads asynchronously.

WebSocketsRedis Pub/SubBullMQ QueuesAsync WorkersEvent-Driven SystemsMessage QueuesBackground ProcessingStream ProcessingTask SchedulingQueued WorkflowsAsynchronous ProcessingDistributed SystemsLoad Balancing

Database Optimization

Optimized PostgreSQL relational schemas, reducing query latency averages by 45% through indexes partitioning, caching boundaries, and custom queries.

SQL QueriespgvectorIndex PartitioningCaching Modelspg-index-advisorSchema MigrationQuery OptimizationSQL OptimizationDatabase DesignData ModelingCRM DatabaseReal-time Database
04. PRODUCTION BENCHMARKSIngress load: 824.1k req/s

Proven System Deliverables

Quantified engineering achievements and architectural benchmarks compiled from my professional career history.

14 Days

Zero-to-Production MVPs

Delivering production-ready, highly concurrent SaaS MVPs for early-stage founders within strict two-week timelines.

Sub-100ms

Asynchronous UI Latency

Engineered event brokers utilizing Redis streams and BullMQ worker queues to process asynchronous tasks and sync active canvases.

45%

Query Latency Cuts

Optimized PostgreSQL schemas through table partitioning, concurrent composite index definitions, and caching structures.

-60%

Recruitment Filtering Time

Built vector semantic screening models utilizing OpenAI/Gemini embedding comparisons and pgvector cosine similarity algorithms.

I bring 5+ years of experience in transforming complex workflows into scalable, real-time architectures. I have designed and deployed high-performance distributed systems, optimized heavy analytical workloads, and delivered enterprise-grade SaaS products from conception to launch.
05. CASE STUDIES

Core Engineering Deliverables

Architectural breakdowns of production-ready software systems. Click the tabs below to audit the core challenge, engineering mechanism, and performance outputs.

Pro Tasker (AI Productivity Workspace)

A comprehensive SaaS productivity app combining AI-powered task planning, Pomodoro focus sessions, real-time collaboration, canvas drawing, gamification, and a full admin dashboard — built as a PWA with 35+ features and 45+ REST endpoints.

Next.js 15TypeScriptMongoDB AtlasPrisma 6Gemini AINextAuth.jsPWASSE
The Bottleneck

System Challenge

Building a cohesive productivity platform where AI planning, real-time collaboration, offline support, and optimistic UI all had to work together without race conditions or state desync.

Implementation

Engineering Action

Designed a layered React Context provider architecture (Auth → Settings → i18n → Toast → Task) with optimistic update handlers, temporary ID reconciliation on server confirmation, and automatic rollback on failure. Used SSE for lightweight real-time presence without WebSocket overhead.

Outcome

Quantifiable Result

Delivered 35+ features across a single installable PWA — including AI project planning with Gemini 2.5 Flash, drag-and-drop Kanban, Pomodoro with Picture-in-Picture, gamification, and a full admin dashboard — with zero-latency UI feedback and offline support.

REST API Endpoints45+
Shipped Features35+
SYSTEM ARCHITECTURE PIPELINE MAP
01. USER INPUTNLP / Form
02. AI PARSEGemini Flash
03. OPTIMISTIC UIContext State
04. DB SYNCPrisma + Mongo
Architectural Trade-offs & Production Specs
Design Decision Rationale
Chosen: Server-Sent Events (SSE) for Presence

Alternative Evaluated: WebSockets / Socket.io

WebSockets introduce bidirectional connection state that requires sticky sessions or a shared Redis PubSub bus in multi-instance deployments. Since collaboration presence is read-heavy (server → client), SSE over Next.js API routes was sufficient, required zero extra infrastructure, and works natively with the App Router's streaming response model.

Production Deploy Environment
AWS PROD ACTIVE

Next.js 15 App Router deployed on Vercel Edge, MongoDB Atlas M10 cluster, Prisma 6 with connection pooling via PgBouncer-equivalent Prisma Accelerate.

Instance status checks: 3/3 pods passing health probes.
06. HISTORY

Career Timeline

Over 5 years of deploying production architecture and building software applications.

2023 — PresentFirstRender Studio

Full Stack Engineer (Independent Consultant)

Directed technical discovery and system architecture for US/UK startup founders, delivering scalable, production-ready SaaS platforms within aggressive 14-to-21 day deadlines.

  • Architected and scaled 4 flagship multi-tenant SaaS platforms from zero to production, integrating AI-driven business intelligence and automated FinTech workflows.
  • Engineered high-concurrency real-time features using WebSockets and Redis, maintaining sub-100ms latency for collaborative enterprise workspaces.
  • Optimized PostgreSQL schemas, reducing query execution time by 45% through strategic indexing, partitioning, and multi-layer caching strategies.
  • Integrated OpenAI/Anthropic models into production workflows, automating data extraction and predictive decision-making for B2B clients.
  • Led technical discovery directly with founders, bypassing traditional agency bloat to deploy core infrastructure rapidly.
2021 — 2023Automation Services Ltd.

Full Stack Software Developer

Scaled enterprise-grade applications using React and Next.js, focusing on automating internal business processes.

  • Scaled enterprise-grade applications using React and Next.js, focusing on automating internal business processes and high-volume inventory management.
  • Redesigned core API middleware and database interaction layers, resulting in a 35% increase in backend throughput and significantly reduced server overhead.
  • Established modern TypeScript coding standards and conducted rigorous peer code reviews within an Agile/Scrum framework.
07. COMMUNICATIONS

Initialize Contact Connection

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