Hi, I'm

Mohamed Sajib Full-Stack Software Engineer

I build production-focused enterprise platforms, AI products and CRM/ERP systems that turn real operational workflows into reliable software. Professionally published online as Sajeeb Ahmed.

Java / Liferay DXPReact / Node.jsAI ProductsCRM / ERP
Explore Case StudiesView ResumeLinkedIn ↗

Open to software engineering opportunities and selected collaborations

Mohamed Sajib, also known as Sajeeb Ahmed, Full-Stack Software Engineer in Dhaka
5+ yearsEnterprise and product engineering
5+Years of professional experience
80+Trainees mentored
4Completed and production systems featured
2026Best Instructor Award

Selected Work

Engineering case studies

Evidence-led summaries of enterprise, AI, CRM/ERP and public-sector work. Confidential systems are presented without exposing internal data or proprietary code.

01
Enterprise CRMPrivate system

Harrington Sales & Marketing CRM

A role-aware business platform for client management, field operations, follow-ups and reporting in one dependable system.

Challenge

Operational information across disconnected records made follow-up, ownership and reporting harder to manage.

My contribution

Full-stack workflow design, data structure, role behavior, reporting logic, production support and operational refinement.

Outcome

A structured source of operational truth with clearer responsibility, reliable records and stronger day-to-day visibility.

ReactTypeScriptNode.jsREST APIsMySQL
Sanitized case study - no client data exposed
02
AI ProductIn production

Harin - Harrington AI Assistant

A multilingual business-context assistant supporting verified product discovery and customer questions.

Role
Product behavior, knowledge integration and response-quality engineering
Focus
Verified answers, English, বাংলা and Banglish UX, continuity and escalation
Outcome
A focused assistance layer connected to real business knowledge
JavaScriptPHPAI Integration
View Harrington ↗
03
Cooperative ERPManaged deployment

Friends Dream Cooperative ERP

A full-stack ERP supporting sales, inventory, EMI collections, accounting and reporting.

Role
Full-stack development, relational modeling, reporting and production QA
Stack
React 19, TypeScript, TanStack Start, MySQL and Supabase
Outcome
Centralized administration around a maintainable relational application model
ERPReactTypeScriptMySQL
Operational details protected
04
Public SectorDelivered at Biometrics BD

DGFOOD Portal - Ministry of Food

Enterprise government portal supporting dealer registration, secure authentication, license-related APIs, payment integration and administrative dashboards.

Contribution

Enterprise interface development, API-driven workflows and data-backed institutional functionality.

Engineering environment

Java, J2EE, React, Liferay DXP, REST APIs and relational databases.

Context

Delivered as part of the Biometrics BD software-development role for a government platform.

Freelance & Client Delivery

Built around dependable outcomes

From 2020 to 2023, I delivered responsive websites and single-page applications through Fiverr and Upwork, translating client requirements into usable, maintainable interfaces.

01

Requirements to release

Clear scope, responsive implementation and practical handoff—without losing the intent behind the client brief.

02

Completed web projects

Business websites and React-based single-page applications optimized for mobile usability, speed and cross-browser reliability.

03

Client satisfaction standard

Transparent communication, iterative refinement and accountable delivery focused on a result the client can confidently use.

Experience

Professional timeline

Software delivery, public-sector engineering, technical instruction, freelance work and client-facing operations.

Jun 2026 - Present

Executive Web & SEO

Harrington - Dhaka, Bangladesh

  • Manage and optimize the WordPress/WooCommerce ecosystem, technical SEO, performance and product discoverability.
  • Develop and support AI-assisted workflows, automation and digital growth initiatives.
Sep 2025 - Apr 2026

Course Instructor & Mentor

Chittagong Hill Tracts Development Board (CHTDB)

  • Mentored learners through hands-on, project-based technical training and career preparation.
  • Received Best Instructor recognition for teaching excellence and learner outcomes.
Jun 2022 - Aug 2025

Software Developer

Biometrics BD Ltd - Dhaka, Bangladesh

  • Developed enterprise applications with Java, JSP/J2EE, Liferay DXP, MySQL and Oracle.
  • Built REST APIs and contributed to testing, debugging, code reviews and CI/CD workflows.
Jun 2020 - May 2023

Freelance Web Developer

Fiverr / Upwork - Remote

Built responsive websites and single-page applications, converting business requirements into functional interfaces.

Dec 2021 - Jun 2022

Intern Developer

Programming Hero

Developed full-stack projects using React.js, Node.js and Firebase through collaborative Agile work.

Feb 2019 - Jun 2021

Assistant Manager, Technical Services

Cebac Animal Care Ltd - Rajshahi, Bangladesh

Led a three-member technical team supporting daily IT operations, backups, equipment records and documentation.

Capabilities

How I deliver software

Grouped by practical use instead of an undifferentiated list of technologies.

01

Product & Workflow Engineering

Requirement discovery, business rules, role-aware behavior, maintainable architecture and production-focused UX.

JavaScriptTypeScriptREST APIsSystem Design
02

Frontend & Full-Stack Delivery

Responsive interfaces and complete web applications connected to reliable backend and data layers.

ReactNode.jsExpressTailwind CSS
03

Enterprise Platforms & Data

Institutional portals, relational modeling, API integration and structured operational data.

JavaLiferay DXPMySQLOracle
04

Search, Performance & Delivery

Search-ready architecture, structured data, Core Web Vitals, deployment and production troubleshooting.

Technical SEODockerLinuxGit

Recognition

Education, certificates and award

Best Instructor Award from the CHTDB ICT Skills Development Project

Award - 2026

Best Instructor Award

CHTDB ICT Skills Development Project
Education

Bachelor's in Economics

National University of Bangladesh - 2021

Education

HSC in Humanities

Govt. Hossain Ali University College - 2016

Certificate

Full Stack Web Development

Programming Hero - 2021

Certificate

JavaScript Certification

freeCodeCamp - 2020

Contact

Let's discuss the right opportunity

For a software-engineering role or project discussion, send the essentials. I usually respond within 24 hours on working days.

sajeeb.web@gmail.comLinkedIn ↗GitHub ↗
Inquiry details

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