Full-Stack Developer & B2B Outreach Specialist
I’m Abdullah Al Masum, a full-stack developer and B2B outreach specialist. I build fast, scalable applications using React, Next.js, TypeScript, and the MERN stack. I also help businesses reach the right prospects through cold email, lead generation, and LinkedIn outreach.
Available for selected freelance and long-term projects.
About Me
I’m a full-stack web developer and outreach professional based in Bangladesh, working with clients worldwide.
On the development side, I create responsive websites, SaaS applications, dashboards, marketplaces, APIs, and custom business platforms. My primary technologies include JavaScript, TypeScript, React, Next.js, Node.js, Express.js, and MongoDB.
My experience in cold email outreach and lead generation gives me a broader understanding of how businesses attract prospects, convert opportunities, and grow. I have helped B2B companies with email infrastructure, deliverability, prospect research, campaign management, and LinkedIn outreach.
Whether I’m developing a web application or building an outreach system, my focus is the same: understand the real problem, create a practical solution, and communicate clearly throughout the project.
Download Résumé (PDF)Technical Skills
The MERN stack is my foundation — MongoDB, Express, React and Node — extended with TypeScript, Next.js and Tailwind CSS for production work.
Services
I build responsive, scalable websites and web applications using modern frontend and backend technologies. From business websites to complex SaaS platforms, I can manage the complete development process.
I build and manage cold email systems designed around relevance, deliverability, and consistent execution—not mass sending.
I research and build targeted prospect lists based on your ideal customer profile, market, company size, location, technology, and buying signals.
I help businesses identify and connect with relevant decision-makers through personalized LinkedIn prospecting and structured follow-up.
Selected Work
A selection of SaaS products, web applications, and growth systems that demonstrate how I approach product development and business problems.
Self-Initiated SaaS Product
Dental Practice Management in One Focused Workspace
DentFlow is a dental practice management SaaS designed to organize appointments, patient information, clinical records, billing, invoices, team access, and operational reporting within one application.
AI-Powered Learning Platform
Personalized Learning and Course Discovery
SkillPath AI helps learners discover relevant courses, explore structured learning paths, and make better learning decisions using AI-powered recommendations.
Freelance Marketplace
Get Tasks Done by Skilled Freelancers
TaskForge is a freelance micro-task marketplace where clients post small tasks, receive proposals from freelancers, hire the best fit, and complete the work securely through Stripe-powered payments.
Cold Email and Lead Generation
A Repeatable Outreach System for B2B Client Acquisition
An end-to-end outreach workflow covering email infrastructure, prospect sourcing, segmentation, campaign creation, deliverability monitoring, and reply management.
Delivered as client work — ask me for a walkthrough.
Client Feedback
My work has included both short-term projects and long-term client relationships across development, lead generation, and outreach.
Reviewed on Upwork
“Great freelancer. Excellent work on cold email campaigns. We had 60 inboxes and all of them had a 95%+ health score, and over a 50% open rate. Very good!”
Reviewed on Fiverr
“Masum was very good to work with. He provided us with many technical details we could not have received without his knowledge and experience. I probably asked more questions than the average customer and he was always professional and very responsive. I would definitely recommend him and work with him again.”
Reviewed on Upwork
“Masum was a pleasure to work with -- we had the challenging task of establishing multiple domains for cold outreach for a SaaS startup and Masum handled everything, including gathering leads, setting up the platform (Instantly), and managing the outreach. Hit some snafus with deliverability.. the only downside, but not preventable. Overall he was a pleasure to work with.”
Reviewed on Fiverr
“Excellent experience working together. Communication was clear, delivery was on time, and the quality of work met expectations. Professional, responsive, and easy to collaborate with. Would recommend and work together again.”
Reviewed on Upwork
“This is out 6th project with Masum. Great work and responsiveness as always”
Reviewed on Fiverr
“Amazing as always. really wants to help, always available to make changes. highly recommend.”
My Outreach Stack
These are tools I use across real cold email workflows—from mailbox infrastructure and campaign management to deliverability monitoring and reply handling. Each platform serves a different purpose, so the right choice depends on your team, sending volume, and workflow.
Email Infrastructure
Build and Manage Your Sending Infrastructure
I use Zapmail to simplify the setup and management of outreach mailboxes. It is a practical option for teams that need scalable Google or Microsoft email infrastructure without configuring every account manually.
All-in-One Outreach Platform
Manage Outreach From One Platform
ReachInbox is a practical all-in-one option for creating campaigns, connecting email accounts, managing warm-up, monitoring performance, personalizing outreach, and organizing replies.
Cold Email Campaign Platform
Build and Scale Cold Email Campaigns
I use Instantly to manage multiple sending accounts, organize leads, create outreach sequences, monitor campaign performance, and handle replies from a centralized workspace.
Disclosure: Some links in this section are affiliate links. If you sign up through one of these links, I may earn a commission at no additional cost to you. I recommend these tools because I personally use them in real outreach work.
The right platform depends on your target market, campaign volume, mailbox infrastructure, and internal workflow. I can help you choose and configure a setup that fits your actual requirements.
Pricing
Transparent starting points for development work. Every project has different requirements, so final pricing and delivery time are confirmed after reviewing the complete scope.
Starting at $750
For professionals and small businesses that need a focused, conversion-oriented online presence.
Estimated timeline: 7–10 business days
Choose BasicStarting at $2,000
For businesses that need a complete website to present their services, work, and expertise.
Estimated timeline: 2–4 weeks
Choose StandardStarting at $5,000
For businesses and founders building a custom SaaS product, dashboard, marketplace, or MVP.
Estimated timeline: 4–8+ weeks
Discuss Your ApplicationNeed cold email outreach, lead generation, or LinkedIn prospecting? These services are quoted based on your target market, lead volume, infrastructure, and level of campaign management.
Contact
Need a full-stack developer, a cold email specialist, or help building a targeted prospecting system? Send me a few details about your project and I’ll respond directly.
Tell me what you’re working on, where you’re currently stuck, and what result you want to achieve. I’ll review the details and recommend the clearest next step.