Open to opportunities

Tamirat
Fereja

Backend specialist building scalable systems, pipelines, and production-ready products

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Years Experience

15+

Projects Shipped

AI Integrations

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— ABOUT ME

Engineering solutions that scale

I'm a passionate engineer focused on building robust, scalable systems that solve real-world problems. From AI-powered transcription services achieving 95%+ accuracy to video streaming platforms with 78% faster load times — I deliver measurable impact.

2+ years in full-stack development with scalable & high-performance systems

Strong expertise in API design, database optimization, and microservices

Experienced in AI/ML integration (Whisper AI, Gemini AI, NLP)

Skilled in SEO optimization, automation, and performance tuning

const transcribe = async (audio) => {
                      const result = await whisper.process({
                        model: "large-v3",
                        language: "auto",
                        task: "transcribe"
                      });

                      return {
                        text: result.transcript,
                        accuracy: "95%+",
                        latency: "60% faster"
                      };
                    }

95%+

Transcription Accuracy

78%

Faster Load Times

— TECH STACK

Tools I use to build production systems

Battle-tested technologies for scalable applications

Backend & APIs

Node.jsFastAPINestJSExpressGraphQL

Databases

PostgreSQLMongoDBFirebaseSupabaseRedis

Frontend

ReactNext.jsReact NativeTypeScriptTailwind

AI/ML

Whisper AIGemini AIPython NLPLangChainTensorFlow

DevOps & Cloud

DockerMinIOAWS S3CI/CDKubernetes

Architecture

MicroservicesREST APIsEvent-DrivenSystem Design

— EXPERIENCE

Building at scale

Real impact, measurable results

02/2025 – Present

Backend Developer

Oneness eLearning Platform

OnePlanet International School

Designed and deployed an AI-powered transcription microservice using Whisper and Gemini APIs, converting lecture videos into searchable content and enabling AI-driven content interaction features
Engineered a student analytics pipeline capturing engagement metrics (completion rates, time spent, activity patterns), enabling data-driven insights for institutions and laying the foundation for analytics-driven products
Designed a scalable course structure using a materialized path model, eliminating recursive queries and improving performance of hierarchical content retrieval
Built a high-concurrency enrollment and scheduling system with Google Calendar integration (OAuth2), enabling real-time synchronization of cohort sessions and reducing manual coordination overhead
Reduced database load and improved response times by implementing Redis caching (cache-aside pattern) for frequently accessed course and cohort data
Developed video streaming microservice with adaptive chunking
Designed a scalable course structure using a materialized path model, eliminating recursive queries and improving performance of hierarchical content retrieval
Created cloud-native file storage microservice

PythonFastAPIWhisper AIGemini AINestJSTypeORMDockerMinIO

01/2023 – Present

Full-Stack Developer

BETE Platform

Built comprehensive MERN-based real estate platform
Integrated multilingual support (Amharic, Afaan Oromo, Tigrinya)
Implemented JWT & Google OAuth authentication
Developed admin dashboards with role-based access

ReactNode.jsMongoDBExpressJWTCloudinaryGoogle Maps

01/2024 – Present

React Developer

Custom Chat System

Designed real-time chat system with Socket.io
Built responsive UI with Redux state management

ReactSocket.ioMongoDBMongooseRedux

— FEATURED WORK

Production-grade systems

Not toy apps. Real products solving real problems at scale.

AI Transcription Microservice

Enterprise-grade AI-powered media transcription & analysis platform with Whisper AI and Gemini AI integration. Features summarization, translation, and engagement analytics.

95%+

accuracy

60% faster

speed

Local exec

cost

PythonFastAPIWhisper AIGemini AIDocker

Code

Video Streaming Platform

High-performance video streaming microservice with HTTP byte-range requests and adaptive chunking for seamless playback across all devices and network conditions.

78% faster

loadTime

63% less

buffering

Enterprise

scale

Node.jsNestJSTypeScriptHTTP Streaming

Code