Launch Your Own Global eSIM App

Project Overview

Comprehensive VPN Infrastructure and Secure Connectivity Solutions for Seamless Internet Protection.

Kolpolok Limited built Symlex VPN, a flagship cybersecurity product designed to ensure online privacy, data encryption, and unrestricted access for users worldwide. The system includes a management console for administrators and resellers, ensuring smooth control, analytics, and subscription management under a single platform.

Project Timeline

Initiation & Design : Late 2019
Development & QA : 2020
Beta Launch & Testing : Mid 2020
Public Rollout : 2021
Ongoing Enhancements & Maintenance : 2022 – present

Problem Statement

• Rising concerns over data privacy and censorship meant users needed stronger control over their online footprint.
• Existing VPNs often lacked local presence, transparency, or performance in Bangladesh and nearby regions.
• Clients and resellers lacked a unified backend to manage users, subscriptions, and reports.
• Scalability issues as the user base grew, performance lag and server stress became real threats.

Solutions

Kolpolok Limited built an end-to-end VPN ecosystem with:

• Cross-platform apps for Android, iOS, Windows, macOS, Linux
• Support for multiple protocols (WireGuard, OpenVPN, AnyConnect, Shadowsocks etc.)
• A centralized admin / white-label console built with Vue.js for user/subscription control, analytics, and reseller workflows
• Third-party integrations: payment gateways, server orchestration, geolocation services
• Automation & reporting: subscription billing, usage logging, dashboarding
• Regular security audits, protocol updates, and server scaling to meet user growth

Features

• AES-256 encryption, no-logs policy, DNS leak protection
• Auto-connect and kill switch
• Split tunneling
• Global server network (100+ locations and 1000+ servers)
• Multi-tier user roles, subscription tiers, reseller modules
• Real-time usage reports, dashboards, alerts
• Cross-platform synchronization
• Branding options for white-label partners

Goals & KPIs

• Achieve 1M+ total subscriptions within first 18 months
• Grow paid user base to 200K+
• Maintain 99.9% uptime
• Ensure low latency (<100ms) across major markets
• Enable data analytics and billing automation for admin efficiency

Final Product

When handed over, the deliverables included:

• Fully functional mobile & desktop apps (Android, iOS, Windows, macOS, Linux)
• Admin / white-label console with dashboard & management tools
• Support documentation, training, and SLA contracts
• Ongoing maintenance & updates

Results & Outcomes

• 10+ million total subscriptions
• 300,000 paid subscribers globally
• Recognized with National ICT Award 2022 in business security category
• Strong operational presence in 90+ countries
• Higher brand trust: local origin, active updates, transparent operations

Project Overview

The project focused on digitizing and automating fleet operations for the Bangladesh Petroleum Corporation (BPC) to monitor tank lorry and oil tanker movements nationwide.

Previously, manual record-keeping made it difficult to track deliveries, leading to security risks, system loss, and frequent delays.

Kolpolok Limited developed a Fleet Management System with real-time GPS tracking, smart reporting, and centralized oversight, giving BPC complete visibility, enhanced security, and measurable cost efficiency across its fuel transport network.

Project Timeline

Project Kickoff : July 16, 2024
Design & Development : 2024 – 2025
Testing & Deployment :Mid 2025
Maintenance Phase : 2025 – Ongoing
Contract Duration : 3 Years (with continuous system maintenance & enhancements)

Problem Statement

Before implementation, BPC’s logistics network faced several long-standing issues:

• Manual fleet tracking with no unified dashboard.
• Inability to verify real-time tanker routes and delivery statuses.
• Frequent fuel theft, unauthorized detours, and delayed shipments.
• Limited data visibility and reporting inefficiency.
• High operational costs due to system loss and lack of automation.

Solutions

Kolpolok Limited developed a smart web and mobile-based Fleet Management System tailored to BPC’s structure.

Key highlights of the solution:

• Technology Stack: Laravel (Backend), React (Frontend), Flutter (Mobile), integrated with REST APIs and real-time telemetry.
• Core Modules: Fleet Tracking, Geo-Fencing, Analytics Dashboard, Trip Logs, Fuel Consumption Reports, and Automated Alerts.
• Integrations: Google Maps API for live tracking, SMS gateways for notifications, and IoT-based vehicle sensors for telemetry data.
• Automation: Automated route monitoring, fuel-level tracking, maintenance scheduling, and performance summaries.

Features

• Real-time GPS tracking of tank lorries and oil tankers.
• Intelligent dashboard for centralized management.
• Route optimization and scheduling tools.
• Automated reports for performance and deliveries.
• IoT telemetry for live sensor data.
• Secure role-based access for admin and users.
• Data-driven analytics for fuel consumption and delivery patterns.
• Offline/online sync support for field officers.
• Comprehensive mobile access for on-the-go updates.

Goals

The core mission of the project was to minimize fuel system loss, strengthen transportation security, and ensure data-backed reporting for all petroleum subsidiaries.

Key Objectives & KPIs:

• Reduce system loss
• Monitor 100% of fleet movements in real time.
• Generate automated performance and delivery reports daily.
• Improve security visibility across depots and routes.
• Enable proactive maintenance to prevent delays.

Final Product

At the handover stage, Kolpolok Limited delivered:

• A fully functional web and mobile application for live fleet monitoring.
• Training and user documentation for all BPC departments.
• Ongoing maintenance and SLA-based technical support.
• Integration with existing IT infrastructure for smoother data exchange.

Results / Outcomes

Since deployment, BPC’s fleet management operations have seen measurable impact:

• Significant reduction in unauthorized fuel movement and delays.
• Faster decision-making with real-time reporting dashboards.
• Enhanced transparency between transport divisions.
• Cost savings from reduced manual monitoring and losses.
• Improved data accountability across all petroleum subsidiaries.
• Thousands of fleet trips are now tracked monthly with digital accuracy.

Project Overview

The project involved developing a dynamic, user-friendly website integrated with a custom CMS for Southeast University.

The goal was to create a centralized and flexible digital platform that allows administrators and faculty to manage academic information, news, events, and updates in real time.

To ensure self-sufficiency, Kolpolok Limited conducted an intensive 3-day training session on website operation and CMS maintenance.

The training covered system configuration, content creation, role management, SEO optimization, security, and troubleshooting.

Project Timeline

Development & Deployment : 3 Months
Training Sessions : 3 Days (3 hours/day)
Status : Live & Operational

Problem Statement

Before the new system, Southeast University’s web operations faced:

• Dependence on external teams for small content updates.
• Limited control over roles, permissions, and publishing workflows.
• Difficulty managing large volumes of academic and event content.
• Lack of SEO-friendly structure and slow website performance.

Solutions

Kolpolok Limited developed a custom Laravel–React-based CMS with a focus on simplicity, scalability, and security.

Key Actions:

• Built a custom CMS supporting multiple modules: pages, posts, portfolios, reviews, galleries, forms, teams, media, and more.
• Designed a responsive website UI aligned with academic branding and accessibility standards.
• Conducted a 3-day structured training for university staff on CMS management and security best practices.
• Provided documentation and live demonstrations under User Acceptance Testing (UAT) to ensure full adoption.

Features

• Dynamic page and content management.
• Role-based access control (RBAC) for user-level permissions.
• Module management for news, events, and academic content.
• SEO-friendly structure and metadata optimization.
• Backup and recovery functionality.
• Basic website security configuration and log reporting.
• Performance optimization and support guidelines.

Goals

• Enable Southeast University to independently manage its website without external dependency.
• Train internal teams on CMS operation, backup, and maintenance.
• Improve website performance and SEO ranking.
• Establish a sustainable content workflow for academic announcements and updates.

Final Product

Kolpolok Limited delivered a:

• Fully functional dynamic website built with Laravel and React.
• Custom CMS designed for educational content management.
• Three-day practical training program (theory, hands-on, case study).
• Documentation and post-training support for the internal team.

Results / Outcomes

• Improved update speed, reducing dependency on third-party developers.
• Enhanced search engine visibility through optimized URLs and meta structure.
• Streamlined content publishing process with multi-user access control.
• Positive engagement from university staff, with full operational adoption.

Project Overview

Kolpolok Limited partnered with an Italian VPN provider to modernize their legacy application, which had been losing users due to poor usability and its failure to bypass VOIP restrictions across several European markets. The goal was to rebuild the product from the ground up—creating intuitive, high-performance VPN applications for all major platforms and delivering a robust backend system that simplified business operations.

Kolpolok developed native VPN applications for mobile and desktop with a one-tap connect UI, ensuring frictionless use for all audiences. The integration of WireGuard and OpenConnect protocols provided stable, high-speed connections optimized for VOIP use, while the redesigned admin console allowed the client’s internal team to manage everything—from user subscriptions to payment analytics—through a single, unified dashboard.

Project Timeline

Initiation & Design : Early 2023
Development & QA : Mid 2023
Launch & Testing : Late 2023

Problem Statement

The client’s existing app suffered from several challenges:

• Users were abandoning the platform due to a confusing interface, connection instability, and the inability to access VOIP services in key regions.
• On the operational side, their internal team lacked a centralized system to manage servers, subscriptions, and affiliates.
• The client required a scalable solution that would reduce churn, unlock restricted communication channels, and streamline backend workflows.

Solutions

• Kolpolok Limited delivered a comprehensive solution that combined intuitive design with robust technology. The new VPN system featured native applications for Android, iOS, macOS, and Windows—each designed for speed and simplicity. By implementing WireGuard and OpenConnect, users could maintain stable VOIP connectivity and improved data security.
• On the backend, Kolpolok developed a powerful admin panel with modules for subscription management, payment transactions, affiliate tracking, push notifications, personalized banners, and advanced analytics. This transformed daily operations into an automated, data-driven workflow.

Features

• One-tap connection interface for quick access
• VOIP bypass integration ensuring uninterrupted calls
• Real-time connection analytics and reporting
• Subscription, payment, and affiliate management
• Cross-platform synchronization with consistent UX
• Secure, scalable infrastructure powered by WireGuard and OpenConnect

Goals

• Enhance user experience and reduce churn rate by simplifying VPN access
• Restore VOIP connectivity across restricted regions
• Automate business operations through a unified dashboard
• Ensure high-speed, stable connections with <100ms latency in core markets

Final Product

• The final deliverables included fully functional mobile and desktop VPN applications, a centralized admin portal with complete business management tools, and comprehensive documentation for client operations.
• Post-launch support included technical maintenance, feature updates, and continuous optimization to sustain growth and reliability.

Results / Outcomes

• The redesigned system significantly improved user retention and overall satisfaction.
• The client reported reduced churn, smoother VOIP connectivity, and faster customer onboarding.
• Operational efficiency increased through automated subscription management and analytics-driven decision-making, positioning the brand competitively within the European VPN market.

Project Overview

Purpose: Build an own telematics platform that supports multi-protocol GPS/IoT devices, real-time tracking, sensor analytics, and enterprise reporting.

Business Processes Covered: VTS, VMS, telemetry ingestion, route/geo-zone control, alerts, reporting, billing hooks.

Build Type: New build (from scratch) to replace legacy listeners that couldn’t scale with new protocols.

Project Timeline

Duration: 6 months to MVP; ongoing hardening and UAT
Phases: Architecture → Development → QA → UAT → Deployment → Optimization

Problem Statement

Existing stacks could not ingest diverse device protocols or handle protocol/version drift, causing data loss, latency spikes, and unreliable tracking. Result: visibility gaps, delayed alerts, and higher support load.

Solutions

• Tech Stack: Laravel, React, Go, C++, Apache Kafka, MongoDB, PostgreSQL, Redis, RabbitMQ
• Core Systems: High-throughput Telematics Listener (Go/C++), scalable Web Platform (Laravel/React)
• Integrations: Map APIs, SMS gateway, Payment gateway
• Automation: Stream processing for event detection, auto alert routing, scheduled report jobs, health checks

Features

• Fleet GPS integration with multi-device protocol adapter
• Live tracking (status, route, speed), trip history, geo-fencing & geo-zones
• Sensor streams (fuel, temp, load) with threshold alerts
• Multi-level dashboards & reports (distance, fuel, halt, speed, occupancy, expense)
• Role-based access (admin, ops, viewer), org & group management
• Data pipeline with Kafka for scale; Redis for low-latency reads
• Offline-tolerant data capture (device-side) and safe replays
• Billing hooks (package/usage ready), export & APIs

Goals

• Zero-loss ingestion across diverse GPS/IoT devices
• Low-latency updates for live tracking and alerts
• Enterprise-grade stability for transport/logistics and public sector
• Admin efficiency via dashboards, scheduled reports, and RBAC

KPIs Targeted

Ingestion reliability, end-to-end event latency, dashboard load time, alert delivery time, device/protocol coverage, uptime/SLA.

Final Product

• Production-ready web platform + telematics listener services
• UAT completion, deployment scripts, environment playbooks
• Technical documentation (APIs, protocol mapping, ops runbooks)
• SLA-based maintenance & support options

Results / Outcomes

• Stable real-time tracking with protocol-agnostic ingestion
• Faster alerting & reports, fewer manual reconciliations
• Easier onboarding of new devices and vendors
• Lower ops overhead through automation and clear observability

Project Overview

Kolpolok Limited collaborated with bKash, Bangladesh’s leading mobile financial service provider, to modernize their customer support infrastructure. The objective was to implement an AI-assisted live chat system capable of handling high volumes of user queries while maintaining quality and personalization.

The platform provides automation for routine inquiries, ticketing for complex issues, real-time analytics for monitoring support performance, and seamless integration with bKash’s existing backend systems. AI capabilities help predict user needs, prioritize tickets, and reduce resolution time, allowing support teams to focus on more critical tasks.

Project Timeline

Initiation & Design: 1 months
Development & QA: 2 months
Pilot Launch & Testing: 1 week
Full Rollout: 1 week

Problem Statement

bKash faced challenges with scaling customer support to match rapid user growth. Existing systems required manual handling of inquiries, resulting in delayed responses, low customer satisfaction, and limited analytics for performance tracking. The client needed a solution that could handle large volumes of inquiries efficiently while maintaining quality support and actionable insights.

Solutions

• Kolpolok Limited developed a full-featured live chat platform integrating AI-driven automation to streamline communication. Automated ticket management ensures that complex user inquiries are routed to the appropriate agents, while routine requests are handled by AI, reducing response time and improving overall service efficiency.
• The platform also includes real-time dashboards for monitoring response times, customer satisfaction, and support team performance. Integration with bKash’s payment systems, CRM, and notification services ensures seamless operation. Analytics tools provide actionable insights to continuously enhance service quality.

Features

• AI-assisted chat for instant automated responses
• Automated ticketing for complex issues
• Real-time analytics and performance dashboards
• Seamless integration with payment and CRM systems
• Push notifications for user updates
• Scalable infrastructure to handle high volumes of concurrent users

Goals & KPIs

• Reduce average response time for customer queries
• Improve customer satisfaction ratings
• Increase automation for routine inquiries to free up agent resources
• Provide actionable insights through detailed analytics
• Enable scalable support to accommodate rapid user growth

Final Product

The final deliverables included a fully functional web and mobile chat application and an AI-driven ticketing system. Analytics dashboards, integration with bKash backend systems, and comprehensive documentation for training and operations were also provided. Post-launch support ensures continuous updates, system optimization, and feature enhancements.

Results & Outcomes

The platform enabled faster, more accurate responses to user inquiries, significantly improving customer satisfaction. Support agents were able to focus on high-priority cases, reducing workload and operational cost. Real-time analytics enabled bKash to refine support strategies, creating a scalable, data-driven system capable of efficiently handling millions of users.