Backend Engineer • SaaS • APIs

Scalable Backends. Reliable Products.

Transforming complex challenges into scalable solutions with Node.js & Python. Building the backbone of tomorrow's digital experiences.

4+

Years Experience

14+

Apps Built

60%

Faster APIs

25%

Cost Reduction

backend.engineer.js
Arham Rumi

const status = "Available for Work";

Remote Backend Engineer focused on secure APIs, database design, cloud deployments, and SaaS infrastructure.

Technical Mastery

Backend-first skills for production systems.

Mastering the tools and technologies that power modern digital experiences.

Backend Engineering

  • Scalable Architectures
  • Production-grade REST API Design
  • Modular Services & Microservice Patterns
  • Secure Authentication, RBAC & JWT Flows
  • API Performance, Reliability & Error Handling

Databases

  • MongoDB, Mongoose & PostgreSQL
  • Schema Design & Data Modeling
  • Query Optimization & Indexing Strategies
  • Aggregation Pipelines & Relational Joins
  • Performance Tuning & Scalable Data Access

Cloud Infra & DevOps

  • AWS Cloud Architecture using EC2, S3, Lambda, and IAM
  • Containerized Deployment with Docker
  • Production Server Setup, Nginx, SSL, and Reverse Proxy Configuration
  • CI/CD Automation for Reliable Release Workflows
  • Application Monitoring, Logging, and Runtime Process Management

Tools & Technologies

Express Socket JWT Stripe Paddle Puppeteer PyQt6 Git Postman TypeScript Mongoose Sequelize Morgan Winston PM2

Tech Stack

Node.js
Python
MongoDB
PostgreSQL
AWS
JavaScript
Docker
Nginx
Redis
Educational Journey

Foundation for engineering excellence.

Building the foundation for technological innovation and excellence.

COMSATS University

Bachelor of Software Engineering

2018 - 2022

  • Graduated with 3.46 CGPA
  • 3rd Position in Batch
  • Software Engineering Excellence

Key Achievements

  • Led multiple successful academic projects including The Holy Quran Listener
  • Strong foundation in software development principles and best practices
  • Demonstrated leadership in team projects and academic collaborations

Certifications & Accolades

Google Soft Skills

PFA, Aug 2024

Problem Solving

HackerRank, Jun 2021

Intermediate Python

DataCamp, Nov 2020

Professional Journey

Experience shaped around real systems.

Building experience one project at a time.

Lead Backend Engineer

Webexhaust, Remote

Aug 2025 - Present

Owning backend architecture and infrastructure for SaaS products, from technical planning and system design to production deployment and reliability. Building secure APIs, scalable data models, and cloud-ready systems while making key engineering decisions that support performance, maintainability, and long-term product growth.

Node.jsExpress.jsMongoDBAWSDevOpsSystem Architecture

Backend Developer

Applet Solutions, Remote

Jun 2024 - Dec 2024

Built and maintained production-ready backend systems for SaaS and business applications, with a strong focus on scalable API design, database optimization, and system reliability. Delivered performance improvements across multiple projects by identifying bottlenecks, streamlining backend workflows, and improving overall application stability.

Node.jsExpress.jsPostgreSQLAWSPerformance OptimizationSaaS Applications

Backend Developer

Meta Logix, Sahiwal

Jul 2022 - Mar 2024

Built and enhanced backend systems for multiple web and mobile applications. Focused on scalable API design, efficient database modeling, and production-ready architecture while improving existing systems through query optimization, code refactoring, and performance tuning. Contributed to faster API responses, better system reliability, and more cost-efficient infrastructure.

Node.jsExpress.jsMongoDBAWSPerformance OptimizationDatabase Design

Junior Data Scientist

DevNation, Remote

May 2021 - Jan 2022

Worked on data analysis initiatives using Python, Pandas, and NumPy to convert complex datasets into actionable business insights, interactive dashboards, and clear performance reports. Contributed to investor-facing presentations by presenting data-backed growth patterns, helping stakeholders evaluate business potential with greater confidence.

PythonPandasNumPyData AnalysisData VisualizationTeam Leadership
Featured Projects

Products, portals, and backend-powered apps.

Showcasing my passion for building innovative solutions.

The Holy Quran Listener

The Holy Quran Listener

A Python-based desktop application designed to support Quranic recitation practice through live speech recognition. It listens to real-time recitation, detects possible mistakes, and presents the correct recitation reference, helping reciters follow along and improve pronunciation and accuracy.

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Python PyQt
Utom

Utom

A comprehensive warehouse management system built to streamline daily operations across the entire warehouse workflow. From product articles, stock control, and inventory tracking to employee management, shifts, workloads, and operational planning, Utom centralizes everything needed to manage warehouse processes efficiently and at scale.

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Node.js AWS
Ethereya

Ethereya

A personalized cosmic insight platform that transforms user birth details into a meaningful self-discovery experience through astrology, numerology, and human design. Built to deliver intuitive, AI-powered guidance with a smooth digital experience and scalable backend infrastructure.

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Node.js AWS
Gym Rite

Gym Rite

A sports performance and team management platform for gyms, coaches, and athletes. It streamlines training workflows, supports athlete development, and improves team coordination through a backend-driven system built for structured sports operations.

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Node.js MongoDB
Duplicate File Cleaner

Duplicate File Cleaner

A lightweight desktop file-management utility that helps users detect and remove duplicate files across selected folders using efficient size-based comparison. The tool focuses on quick cleanup, storage optimization, and simple local file organization without the overhead of deep content analysis.

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Python Desktop
Support Portal

Support Portal

An internal operations and workforce management portal built for Meta Logix to centralize company workflows. The platform supports role-based employee access, announcements, expense management, attendance tracking, and administrative controls, helping teams manage daily operations through a structured and secure backend-driven system.

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Node.js Express
Calm Vibe

Calm Vibe

A wellness-focused mobile platform offering meditation music, calming nature sounds, and relaxation audio experiences for sleep, stress relief, and daily mindfulness. Built for users seeking emotional balance, healthier routines, and a more peaceful digital wellness experience.

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Node.js Mobile
Soul Calm

Soul Calm

A wellness and mindfulness mobile platform focused on guided meditation, anxiety relief, sleep improvement, and emotional balance. The app delivers a structured library of calming audio experiences designed to help users build healthier mental wellness routines through relaxation, focus, and daily mindfulness practices.

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Node.js Mobile
HomeIt

HomeIt

A household finance management platform focused on budget control, expense tracking, and financial visibility. The system helps users categorize spending, monitor cash flow, and access real-time visual reports through a responsive, mobile-first web experience.

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Bootstrap PHP

Ready to Build Something Amazing?

Let's collaborate to turn your ideas into robust, scalable digital solutions that make an impact.

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Let's Connect

Got a project in mind? Let's talk.

Let's discuss how we can work together to bring it to life.