Hi, I'm
Mohamed Sajib (Sajeeb Ahmed)Web & SEO Executive · Full-Stack Web Developer
Web & SEO Executive and Full-Stack Web Developer with 4+ years of experience building scalable web applications, optimizing digital experiences, and driving online growth. Expertise spans full-stack development (MERN & Java), technical SEO, enterprise web solutions, and digital brand communications — solving complex technical challenges and building products that combine excellent user experience with measurable business impact.
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A little about me
Web & SEO Executive and Full-Stack Web Developer with 4+ years of experience building scalable web applications, optimizing digital experiences, and driving online growth. Expertise spans full-stack development (MERN & Java), technical SEO, enterprise web solutions, and digital brand communications — solving complex technical challenges and building products that combine excellent user experience with measurable business impact.
4+
Years Experience
80+
Trainees Mentored
71
Completed Projects
23
Satisfied Clients
Web development & SEO services
Full-stack build, maintenance and search optimisation — for teams in Dhaka and clients working remotely.
Tools & technologies I work with
Full-Stack Development
92%Enterprise & Backend
85%Databases
80%SEO & Web Performance
85%CMS & Platforms
75%Tools & DevOps
88%Design Tools
75%Other
78%Where I've worked
Executive — Web & SEO, Brand & Communications
Harrington (Blitzkrieg Group) · Dhaka, Bangladesh
- Lead the organization's web presence, developing, optimizing, and maintaining high-performance digital platforms that support business growth and brand visibility.
- Collaborate with cross-functional teams to deliver user-focused web solutions and execute technical SEO strategies.
- Drive website performance optimization, search visibility, content management, and digital branding initiatives using modern web technologies and data-driven insights.
- Contribute to strategic digital initiatives through full-stack development, analytics, and AI-assisted workflows.
Course Instructor — Web Design & Development
Chittagong Hill Tracts Development Board (CHTDB) · Chattogram, Bangladesh
- Delivered intensive Web Design & Development training to 80+ trainees across multiple batches under the CHTDB ICT Skills Development Project.
- Designed and delivered a curriculum covering HTML5, CSS3, Bootstrap, JavaScript (ES6), React.js, Git, GitHub, and responsive design best practices.
- Mentored trainees through project-based learning, code reviews, and one-on-one technical guidance to prepare them for industry careers.
- Recognized with the Best Instructor Award for outstanding teaching performance and learner outcomes.
Full-stack Developer
Biometrics-bd Ltd · Dhaka, Bangladesh
- Developed secure login features and custom notification systems to enhance user authentication and engagement.
- Built intuitive interfaces for dealer beneficiary lists and registration application views.
- Designed accessible dealer registration profiles and engineered services for efficient registration processes.
- Developed web list interfaces for dealer withdrawals and services for food-friendly programs.
- Built APIs for food grain license management and user-centric application list interfaces.
- Implemented secure, user-friendly web payment solutions for license processing.
Frontend Web Developer (Freelance, incl. Fiverr)
Self-employed · Remote
- Designed and developed responsive web applications for clients using React.js, JavaScript, and CSS.
- Implemented Firebase authentication, Google Analytics, and other web technologies to enhance UX.
- Worked remotely with clients across multiple projects, maintaining quality and deadlines.
Internship Trainee
Programming Hero · San Jose, California, United States (remote)
- Completed the Complete Web Development course — HTML5, CSS3, Bootstrap, Tailwind CSS, JavaScript ES6, React.js, Firebase Authentication, and the MERN stack.
- Collaborated with peers on group projects, gaining experience in teamwork and problem-solving.
Education
Bachelor Degree, Department of Economics
National University of Bangladesh
Higher Secondary Certificate (HSC) — Humanities
Dhaka
GPA 4.69
Secondary School Certificate (SSC)
Dhaka
GPA 5.00
Certificates & awards
Certificates
- Full Stack Web Development
Programming Hero · 2021
- JavaScript Certification
freeCodeCamp · 2020
Awards
Best Instructor Award
CHTDB ICT Skills Development Project · 2026
Honored for outstanding performance delivering Web Design & Development training, mentoring aspiring developers, and achieving excellent learner outcomes.
Featured web development projects
A selection of client and personal projects, with live demos and source code.
Harrington Field Operations
Internal field-sales platform for Harrington's Dhaka team: role-based employee access, canonical client records with one-client-one-catalog enforcement, visit logging, follow-ups, full audit history, and management reporting. Built on MongoDB multi-document transactions so client registration and catalog allocation stay consistent, with GridFS-backed private photo storage and signed HTTP-only session cookies.
Harrington
Corporate website for the Harrington group — product-led marketing site covering the sanitaryware range, built and maintained in-house with a focus on page performance and technical SEO.
Blitzkrieg Group
Group-of-companies corporate website presenting the parent brand and its business units, with a structured content model and search-optimised, responsive layouts.
Friends Dream Society
Management system for a cooperative society, rebuilt from a mock-data prototype into a full MERN application — JWT authentication, role-based admin access, and seeded member and settings data persisted on MongoDB.
Latest repositories
Straight from GitHub, refreshed on every deploy.
protfoliyo
No description provided.
fdsc
No description provided.
blitzkrieg-collective
No description provided.
marketing-operations
No description provided.
harrington-sales-system
No description provided.
harrington-connect
No description provided.
What clients say
“An extraordinary, multi-talented developer with vast knowledge and skills — communicates clearly and delivers work I was totally satisfied with.”
James Ross
Executive Director, Kirzo Ltd.
“My first time working with someone from Bangladesh — he understood exactly what I needed and how to get me a result I was happy with.”
Charles D'costa
Lead Instructor, Norman Institute
“Impressed by his portfolio and recent work, so I hired him to build my agency's website — really happy with the final result.”
Webbin Mabuse
CEO, Beijing Startups Inc.
“Built an amazing, fast, modern and responsive website for my business — exactly what I needed to grow it.”
Billy Simon
Co-Founder, Simon Brothers Ltd.
“Found his work through his portfolio, hired him without hesitation, and would happily work with him again.”
Jeremey Arthur
CEO, Jeremy IT & Business
Frequently asked questions
What clients usually want to know before starting a project.
What web development services do you offer?
I build and maintain web applications end to end — front-end interfaces in React.js and TypeScript, back-end services and REST APIs in Node.js and Java, and database work across MySQL, MongoDB and Oracle. Alongside that I handle technical SEO, performance optimisation, enterprise content management and ongoing site maintenance.
Are you available for freelance work?
Yes. I take on freelance and contract projects alongside my role as Web & SEO Executive at Harrington (Blitzkrieg Group). The quickest way to start is the contact form on this page, or an email to sajeeb.web@gmail.com describing what you need.
Do you work with clients outside Bangladesh?
Yes. I am based in Dhaka, Bangladesh and have worked remotely with international clients since 2020, including through Fiverr and Upwork. Remote collaboration across time zones is how most of my freelance work has been delivered.
Which technologies do you build with?
Most projects are MERN stack — MongoDB, Express.js, React.js and Node.js — with TypeScript and Tailwind CSS on the front end. I also work in Java, JSP and J2EE for enterprise systems, including Liferay DXP portals, and use Next.js where server rendering makes sense.
Can you improve the SEO of an existing website?
Yes — technical SEO is a core part of my current role. That covers crawlability and indexing, structured data, Core Web Vitals and page performance, Google Search Console and Analytics setup, and the structural problems that quietly stop a site ranking. This portfolio is prerendered to static HTML for exactly that reason.
Are Mohamed Sajib and Sajeeb Ahmed the same person?
Yes. My name appears in a few forms depending on the document — Mohamed Sajib, Sajeeb Ahmed, Sajib Ahmed, Md Sajib Miah and Sajib Miah all refer to me. Professionally I go by Sajeeb Ahmed online, which is why you will find me as sajeeb-ahmeed on GitHub and at sajeeb.web@gmail.com, while formal records use Mohamed Sajib.
How much experience do you have as a full-stack developer?
Over four years, starting as a front-end developer and moving into full-stack and software development work. I built enterprise portals and secure payment interfaces at Biometrics-bd Ltd, taught Web Design & Development to more than 80 trainees for the Chittagong Hill Tracts Development Board, and now lead web development and SEO at Harrington.
Let's build something together
Have a project in mind, or just want to say hi? Send a message and I'll get back to you soon.