You will get Backend developer| Node.js | Express.js | Nest.js |Mongo DB
Project details
I have 5+ years of experience in Back-end development, I specialize in building and maintaining powerful server-side applications, REST APIs, and full backend infrastructures for custom websites, web apps, and SaaS platforms.
🔧 Backend Development Services I Offer:
• Full backend architecture using Node.js, Express.js, and MongoDB/MySQL
• RESTful API development and third-party API integration
• Backend fixes, performance tuning, and code optimization
• Firebase backend services including Firestore, Authentication, and Hosting
• Secure user authentication using JWT, OAuth, and role-based access
• Scalable database design and integration (MongoDB, MySQL, Firebase)
• Server-side logic for real-time apps, admin panels, and dashboards
• Clean, maintainable, and well-documented codebases
💼 Tech Stack Expertise:
Backend & Server-side:
• Node.js, Express.js, Firebase,
• MongoDB, MySQL, PostgreSQL
• RESTful API, Authentication (JWT, OAuth2)
• Firebase Firestore, Realtime DB, Functions
My core focus is to help you scale and succeed by building robust backend systems that perform under load and grow with your business.
🔧 Backend Development Services I Offer:
• Full backend architecture using Node.js, Express.js, and MongoDB/MySQL
• RESTful API development and third-party API integration
• Backend fixes, performance tuning, and code optimization
• Firebase backend services including Firestore, Authentication, and Hosting
• Secure user authentication using JWT, OAuth, and role-based access
• Scalable database design and integration (MongoDB, MySQL, Firebase)
• Server-side logic for real-time apps, admin panels, and dashboards
• Clean, maintainable, and well-documented codebases
💼 Tech Stack Expertise:
Backend & Server-side:
• Node.js, Express.js, Firebase,
• MongoDB, MySQL, PostgreSQL
• RESTful API, Authentication (JWT, OAuth2)
• Firebase Firestore, Realtime DB, Functions
My core focus is to help you scale and succeed by building robust backend systems that perform under load and grow with your business.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$40
|
Standard
$150
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | Unlimited |
Number of Pages | 2 | 4 | 6 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
9 reviews
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FC
Feng Lin C.
Mar 9, 2026
MERN Stack Developer Needed to Debug APIs and Fix Frontend Issues
Great experience working together. The developer demonstrated solid knowledge of the MERN stack and quickly identified and resolved the API and frontend issues. Communication was clear, and the fixes were delivered efficiently. I would be happy to collaborate again on future projects.
JT
Jannis T.
Mar 2, 2026
Full Stack Development
Loved working with Waseem. He's been super helpful, always on point, and always delivered great quality of work.
We've been working with him for a while now, and his work has been consistent and reliable from the start.
I highly recommend him to anyone needing a great full-stack developer.
We've been working with him for a while now, and his work has been consistent and reliable from the start.
I highly recommend him to anyone needing a great full-stack developer.
MA
Mr Ali A.
Feb 13, 2026
AI Developer (LLMs, APIs & Production AI Systems) - updates
I highly recommend this developer for any AI-related work. Professional, skilled, and reliable—looking forward to collaborating again in the future!
MA
Mr Ali A.
Feb 9, 2026
AI Developer Needed for LLMs and Production AI Systems
Strong opportunity for an AI developer experienced with LLMs and production-grade systems. Background in prompt engineering, model evaluation, RAG pipelines, and scalable deployment would be highly valuable. Emphasis on reliability, performance optimization, and real-world integration aligns well with modern AI product needs.
SJ
Specimen J.
Jan 7, 2026
Fix Node.js API Endpoint Issue
The Node.js API endpoint issue was fixed efficiently and professionally. The developer quickly identified the root cause, implemented a clean solution, and ensured the API worked smoothly without errors. Communication was clear, and the task was completed on time. Highly satisfied with the quality of work.
About Waseem
GoHighLevel Setup | CRM & Workflow Automation | Funnels | n8n , Zapier
100%
Job Success
Okara, Pakistan - 4:40 am local time
I build GoHighLevel systems, AI automations, CRM workflows, and custom SaaS platforms that capture leads, book appointments, and convert prospects, without anyone managing them manually.
If your agency or business is still running on manual follow-ups, disconnected tools, or a CRM nobody trusts.
I fix that. And when your automation needs a custom home to live in, I build that too.⚡
GOHIGHLEVEL (GHL) — MY CORE SPECIALTY
✔ Full GHL account & sub-account setup, onboarding & white-label branding
✔ Snapshot creation, cloning & deployment — niche-ready systems for fast client launches
✔ High-converting funnels, landing pages, opt-ins, upsells & checkout flows
✔ CRM pipeline configuration — lead scoring, tagging, deal progression & follow-up logic
✔ Multi-channel automations — email, SMS, voice drops, missed-call text-back
✔ Appointment scheduling — calendar setup, reminders, Google/Outlook sync
✔ Reputation management — automated review request flows & brand trust building
✔ GHL AI conversation automation — lead qualification bots & smart follow-ups
✔ White-label SaaS builds — resellable snapshots your agency can deploy in days
🔄 WORKFLOW AUTOMATION
✔ n8n, Make com, and Zapier — multi-step workflows built for real business conditions
✔ Lead capture → nurture → scheduling → conversion running on autopilot
✔ API and webhook integrations — if two platforms exist, I can connect them
✔ Airtable and Google Sheets automation with custom scripts and dashboards
🤖 AI AGENT DEVELOPMENT
✔ AI chatbots for lead qualification, support, and appointment booking
✔ OpenAI and ChatGPT API integrations into your existing workflows
✔ Autonomous follow-up and routing systems that handle complexity without human input
✔ Multi-channel AI automations — WhatsApp, SMS, email, voice
📈 CRM & MARKETING AUTOMATION
✔ HubSpot, Openclaw, Pipedrive, Salesforce, and ActiveCampaign workflow automation
✔ Lead nurturing, re-engagement, and drip campaign sequences
✔ CRM cleanup, deduplication, and pipeline stage automation
✔ Email deliverability setup — domain auth, SMTP config, inbox optimization
✔ Social media marketing automation via Make com and Airtable
🖥️ CUSTOM SaaS & WEB DEVELOPMENT
Sometimes automation needs a custom platform to live in — I build that too.
✔ SaaS MVP Development — idea to working product, fast and clean
✔ React & Next.js — modern, fast frontends and client dashboards
✔ Node.js & REST APIs — scalable backends that connect to any tool or CRM
✔ Custom client portals — white-label dashboards built on top of your GHL or automation stack
✔ Webhook & API architecture — clean data pipelines between your platforms
✔ Database design — structured, reliable data that doesn't break under load
Whether you need a landing page, an internal ops dashboard, or a full SaaS product, I build it to integrate seamlessly with your automation stack from day one.
🔧 TOOLS & TECH I USE EVERY DAY
GoHighLevel · n8n · Make com · Zapier · OpenAI / ChatGPT
HubSpot · Pipedrive · Salesforce · Airtable · Google Sheets
React · Next.js · Node.js · REST APIs · Webhooks
Stripe · Twilio · Slack · Facebook Lead Ads
🎯 YOU'RE IN THE RIGHT PLACE IF YOU ARE...
🏢 A marketing agency that needs white-label GHL systems built fast and right
🚀 A SaaS founder who needs an MVP plus the automation layer built together
🏠 A real estate, healthcare, or ecommerce business ready to stop losing leads
🔧 A service business where your team is drowning in tasks a system should handle
💡 A startup or operator who needs a custom web app and the workflows to power it
💡 WHY CLIENTS KEEP COMING BACK100% Job Success Score across 50+ completed projects and 1,500+ hours isn't luck — it's a process. I don't hand off a workflow and disappear.
Every system I build is documented, tested, and designed so your team can operate it independently. When your business grows and needs something new, I'm still here.
No broken handoffs. No mystery logic. No ghosting.Just clean builds, clear communication, and automations still running months after delivery.
✅📩 Send me a message — describe what you're trying to automate or build, and I'll tell you exactly what's possible. Free audit included.
Steps for completing your project
After purchasing the project, send requirements so Waseem can start the project.
Delivery time starts when Waseem receives requirements from you.
Waseem works on your project following the steps below.
Revisions may occur after the delivery date.
Gather Requirements & Plan Architecture
Understand the project scope, define required endpoints, database schema, and integration needs.
Develop Backend Logic & APIs
Build secure RESTful APIs, integrate databases, implement authentication, and handle business logic using Node.js and Express.