@ Playstream Interactive

Hi, I'm Kalab Tenadeg — a Full Stack Engineer building web platforms and VAS systems that run in production.

I design, build, and ship RESTful APIs, telecom VAS integrations, and full-stack web applications end to end — from responsive front ends to the backend logic and infrastructure that keeps them running.

Process

How I work

01

Understand

Analyse the requirements, the existing codebase, and the constraints before writing a line of code.

02

Architect

Pick the design pattern and data model that fits the problem, and plan for a codebase that stays readable and maintainable as it grows.

03

Build

Implement with security and data-privacy best practices in mind, keeping the team in the loop with 24/7 responsive communication.

04

Ship & Support

Deploy, monitor, and stay available for fixes and improvements long after the first release.

16
Projects delivered
5+
Years in software engineering
7
Companies worked with
6
Articles published
Work

Systems with real users

A selection of full-stack platforms, VAS integrations, and company websites I've built end to end.

Algorithm Visualizer
Tools & Experiments

Algorithm Visualizer

A better visualization of different algorithms made with React. ### Acknowledgement: I took inspirations from the following sources for some of the segments. Pathfinder: [The Projects That Got Me Into Google](https://youtu.be/n4t_-NjY_Sg)

React
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BuyAfri Ecommerce and Logestic Company Website and mangment system
E-commerce

BuyAfri Ecommerce and Logestic Company Website and mangment system

an ecommerce and logestic company website and mangment system including social media mangment and analysis integration and internal company mangment tool , delivery tracking details and more using next.js -v13 , tailwind css, and PostHog Anlytics

Next.jsTailwind CSSPostHog
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Serve Smart Pro is a SAAS Product that provide a  ERP system for cafe and restaurants
SaaS / ERP

Serve Smart Pro is a SAAS Product that provide a ERP system for cafe and restaurants

it is a complete solution for cafe and restaurant mangment system including inventory mangment, order mangment, customer mangment, and more. it is a complete solution for cafe and restaurant mangment system including inventory mangment, order mangment, customer mangment, and more.

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Qedami Software Solution and Services Company Website and mangment system
Company Website

Qedami Software Solution and Services Company Website and mangment system

Qedami Software Solution and Services is a leading IT company based in Addis Ababa, Ethiopia, dedicated to providing innovative software solutions and services to both national and international clients. Since our inception, we have been committed to delivering high-quality software and IT solutions.

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speedlify solution and services company website and mangment system
Company Website

speedlify solution and services company website and mangment system

speedlify Solution and Services is a leading IT company based in Addis Ababa, Ethiopia, dedicated to providing MVP software solutions and services the startup companies.

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Guestopia Solutions Company CMS and Mangment Website
CMS / Management Tool

Guestopia Solutions Company CMS and Mangment Website

CMS web app including social media mangment and analysis integration and internal company mangment tool using next.js -v13 , tailwind css, and PostHog Anlytics

Next.jsTailwind CSSPostHog
View project →
Skills

What I work with

Frontend

HTML99%
css99%
tailwind css99%
javaScript99%
typescript95%
react99%
redux98%
Next.js90%
Three.js88%

Backend

python99%
express89%

Database

postgreSQL85%
mongoDB88%

Infrastructure

Docker80%
AWS80%
Nignx75%
Apache75%
Digital Ocean75%
vercel95%
Netlify95%

Design

figma85%
Experience

Where I've worked

2025-present

Senior FullStack Engineer

@ Playstream Interactive
  • Full Stack Development: Designed and implemented complete web applications and VAS platforms using modern technologies like React, Node.js, and Python frameworks.
  • Telecom VAS Integration: Built and maintained APIs integrating with major telecom partners such as Telebirr and M-pesa for delivering various value-added services.
  • Service Development: Created scalable VAS solutions including USSD applications, SMS services, and mobile web platforms.
  • Partner Collaboration: Worked directly with telecom partner teams to deliver customized VAS solutions that meet specific market and user needs.
  • System Optimization: Enhanced application performance and user experience through code improvements and infrastructure upgrades.
  • Technical Support: Provided technical expertise and ongoing maintenance for live VAS platforms to ensure high availability and reliability.
  • Successfully delivered multiple VAS platform projects for major telecom partners.
  • Developed and maintained high-traffic VAS applications serving thousands of users daily.
  • Implemented robust monitoring and logging systems that reduced service downtime.
  • Worked with cross-functional teams to deliver VAS solutions on time and within budget.
2024-2025

DevOps Engineer

@ Africa Technology PLC
  • Maintaining and scaling the infrastructure that the apps and services run on.
  • Implementing new features and improvements to the apps and services. Things like adding support for shared rides, implementing real-time tracking of drivers, improving the algorithms for matching drivers to riders, and more...
  • troubleshooting issues and bugs in the apps and services to ensure a smooth user experience.
  • optimizing the performance of the apps and backend systems to reduce latency, improve reliability, and scale efficiently.
  • working cross-functionally with product managers, designers, QA testers, data scientists, analysts, and other engineers.
  • Maintaining high standards for security, scalability, observability, and other quality attributes when developing systems
  • monitoring overall system health and key metrics like request times, error rates, server response times and more...
2023-present

Senior Full Stack Engineer

@ Africa Technology PLC
  • Responsible for developing and maintaining the web applications for customers, drivers, and dispatchers. This includes things like the admin panel, dispatcher web panel, and internal tools.
  • Work on the backend systems and APIs that power the apps.
  • Implementing new features and improvements to the apps and services. Things like adding support for shared rides, implementing real-time tracking of drivers, improving the algorithms for matching drivers to riders, and more...
  • troubleshooting issues and bugs in the apps and services to ensure a smooth user experience.
  • optimizing the performance of the apps and backend systems to reduce latency, improve reliability, and scale efficiently.
  • Maintaining high standards for security, scalability, observability, and other quality attributes when developing systems
2022-2023

Freelance Full Stack Developer

@ Orange Digital Center
  • Responsible to develope full ecommerce platform from scratch using Next.js
  • Designed, developed, and modified 65+ software modules and custom components
  • Collaborated with 3 stakeholders to develop morethan 15 new user-facing features.
  • Assisted in building 100% reusable code and libraries for future use.
  • Validated 100% of user input before submitting to the backend.
  • Analysed 30+ user requirements to derive technical software design and performance requirements
Writing

Latest articles

12 Essential Web APIs Every Developer Should Know

Every developer Should know this 12 essential APIs

12 Essential Web APIs Every Developer Should Know

Every developer Should know this 12 essential APIs

Conversational Magic: Exploring ChatGPT Integration API 🚀

This is how easy to integrate ai with your website

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