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Working from home
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Achievements

Achievement: Pull Sharkx3Achievement: YOLOAchievement: Quickdraw

Achievements

Achievement: Pull Sharkx3Achievement: YOLOAchievement: Quickdraw

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HasanJahidul/README.md

Jahidul Hasan

Backend Software Engineer · Java / Spring Boot · Microservices · CloudOps · AI Agent Tooling
Dhaka, Bangladesh · 3+ yrs shipping scalable SaaS, automated infrastructure & open-source tooling

📊 By the numbers

📦 Featured Project

zkteco-pull-spring-sdk

Spring Boot SDK for ZKTeco biometric & access-control devices using pull-based sync. Pure Java — no JNI, no native binaries, GPG-signed on Maven Central.

Maven Central MvnRepository License

2,800+ downloads · 50+ companies in production — combined across current com.hasanjahidul namespace (1.1K) and legacy/relocated io.github.hasanjahidul namespace (1.7K). 3 months on Maven Central (Sonatype Insights).

<dependency>
  <groupId>com.hasanjahidul</groupId>
  <artifactId>zkteco-pull-spring-sdk</artifactId>
  <version>1.0.3</version>
</dependency>

🤖 Dev Context Suite — 3 MCP servers (npm)

Three single-purpose Model Context Protocol servers in TypeScript that give AI coding agents (Claude, Cursor, etc.) memory of a developer's environment. Built solo with Claude Code, zero infra cost. Zod-validated, node:test + e2e harness, CI + Docker, MIT. Listed in Glama, mcp.so, and awesome-mcp-servers.

Package What it does
terminal-history-mcp Full-text search over shell history (zsh/bash/fish) via SQLite FTS5; 11-pattern secret scrubber; ±5-min "command chains". Also on MCPize.
localhost-mcp Inspect / manage / kill local dev servers via lsof/ps; port-conflict diagnosis; multi-factor zombie detection; safety-gated killer (dry-run default, refuses PID < 1000)
git-insight-mcp Semantic git queries beyond git log — ownership by blame, PR-introduction tracing, co-change analysis, branch hygiene, standup helper

💼 Currently

  • 🏢 Software Engineer @ Arits Limited — designing scalable SaaS microservices on Spring Boot + NestJS, owning CloudOps across AWS / DigitalOcean / Proxmox
  • 🛠️ Maintaining zkteco-pull-spring-sdk (v1.0.3) on Maven Central + 3 MCP servers on npm
  • 📚 Exploring Spring AI, agentic tooling, AI-augmented backend workflows

🛠️ Tech stack

Languages

Java TypeScript JavaScript PHP Python SQL

Backend & Frameworks

Spring Boot Hibernate NestJS Laravel React Angular Next.js

Data & Messaging

PostgreSQL MySQL Redis RabbitMQ

Cloud & DevOps

AWS DigitalOcean Proxmox Terraform Docker Jenkins GitLab CI GitHub Actions NGINX CloudFlare

Observability

Prometheus Grafana Loki Grafana Alloy ELK Stack Zabbix

AI / Tooling

MCP Node.js npm SQLite Zod

📈 GitHub stats

📫 Contact

Open to backend / cloud-native engineering roles, OSS collaboration, and consulting on Spring Boot, microservices, CloudOps, and AI agent tooling.

Pinned Loading

  1. zkteco-pull-spring-sdk zkteco-pull-spring-sdk Public

    Spring Boot Starter for ZKTeco Attendance Devices — Connect, fetch, and manage attendance data over TCP (port 4370)

    Java

  2. terminal-history-mcp terminal-history-mcp Public

    Search your shell history (zsh/bash/fish) from Claude/MCP. Local SQLite FTS5. Secret-redacted.

    TypeScript 1

  3. localhost-mcp localhost-mcp Public

    MCP server: inspect, manage, kill local dev servers. Stop guessing what's on :3000.

    TypeScript