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.IO 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
Professional Journey

Experience shaped around real systems.

Building experience one project at a time.

Lead Backend Engineer

Webexhaust, Remote

Aug 2025 - Present

Architecture: Own backend planning, service design, and technical direction for SaaS products.

Reliability: Build secure APIs, scalable data models, and production-ready release paths.

Infrastructure: Guide cloud-ready deployments with maintainability and long-term product growth in mind.

Node.jsExpress.jsMongoDBAWSDevOpsSystem Architecture

Backend Developer

Applet Solutions, Remote

Jun 2024 - Dec 2024

API Systems: Built and maintained production backend systems for SaaS and business applications.

Performance: Identified bottlenecks and streamlined backend workflows across multiple projects.

Data Reliability: Improved database access patterns and overall application stability.

Node.jsExpress.jsPostgreSQLAWSPerformance OptimizationSaaS Applications

Backend Developer

Meta Logix, Sahiwal

Jul 2022 - Mar 2024

Performance: Improved selected API response times by up to 60% through indexing and leaner query patterns.

Infrastructure: Helped reduce infrastructure costs by up to 25% by optimizing server resource usage.

Architecture: Built scalable APIs, efficient database models, and production-ready backend systems.

Node.jsExpress.jsMongoDBAWSPerformance OptimizationDatabase Design

Junior Data Scientist

DevNation, Remote

May 2021 - Jan 2022

Analytics: Converted complex datasets into business insights, dashboards, and performance reports.

Reporting: Prepared data-backed growth patterns for stakeholder and investor-facing presentations.

Decision Support: Helped teams evaluate business potential with clearer operational and growth signals.

PythonPandasNumPyData AnalysisData VisualizationTeam Leadership
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

Pakistan Freelancers Association, Aug 2024

Problem Solving

HackerRank, Jun 2021

Intermediate Python

DataCamp, Nov 2020

Featured Projects

Products, portals, and backend-powered apps.

Showcasing my passion for building innovative solutions.

The Holy Quran Listener

The Holy Quran Listener

Role

Desktop app developer focused on speech recognition workflow.

Problem

Reciters needed real-time feedback while practicing Quran recitation.

Outcome

Delivered live mistake detection with the correct recitation reference.

Stack
Python PyQt
Utom

Utom

Role

Backend engineer for operational workflows and infrastructure.

Problem

Warehouse teams needed one place for inventory, stock, shifts, and workloads.

Outcome

Centralized daily warehouse operations into a scalable backend-driven system.

Stack
Node.js AWS
Ethereya

Ethereya

Role

Backend engineer for AI-guided report generation and delivery.

Problem

Users needed personalized astrology, numerology, and human design insights.

Outcome

Built scalable infrastructure for personalized digital reports.

Stack
Node.js AWS
Visit
Gym Rite

Gym Rite

Role

Backend engineer for sports operations and team management workflows.

Problem

Gyms and coaches needed better coordination for athletes and training plans.

Outcome

Created backend systems for structured athlete, team, and workflow management.

Stack
Node.js MongoDB
Visit
Duplicate File Cleaner

Duplicate File Cleaner

Role

Desktop utility developer focused on local file cleanup.

Problem

Users needed a quick way to find duplicate files across selected folders.

Outcome

Built efficient size-based scanning to speed up storage cleanup.

Stack
Python Desktop
Support Portal

Support Portal

Role

Backend developer for internal operations and admin workflows.

Problem

Company workflows were split across access, expenses, attendance, and announcements.

Outcome

Centralized daily operations into a secure role-based support portal.

Stack
Node.js Express
Calm Vibe

Calm Vibe

Role

Backend engineer for mobile content and wellness experiences.

Problem

Users needed organized calming audio for sleep, stress relief, and mindfulness.

Outcome

Supported delivery of meditation music, nature sounds, and relaxation content.

Stack
Node.js Mobile
Visit
Soul Calm

Soul Calm

Role

Backend engineer for guided audio and mobile wellness services.

Problem

Users needed structured audio experiences for anxiety relief, sleep, and focus.

Outcome

Built services powering meditation, relaxation, and emotional balance routines.

Stack
Node.js Mobile
Visit
HomeIt

HomeIt

Role

Web developer for household finance tracking and reporting.

Problem

Households needed simple visibility into expenses, budgets, and cash flow.

Outcome

Built responsive expense categorization and budget report views.

Stack
Bootstrap PHP

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