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Hi, I’m Yonas Alem, a Senior Fullstack Engineer specializing in scalable backend systems and responsive frontend apps for fintech and enterprise platforms. I thrive with modern web stacks like Node.js, TypeScript, Redis, Next.js, and AWS, and I have a proven track record of microservice migrations, performance tuning (40%+ API speed gains), and building intuitive dashboards. I’m excited to contribute to remote teams delivering secure, maintainable software. I’m seeking remote full-time or freelance opportunities where I can apply my expertise in async-first environments, collaborate across disciplines, and drive reliable product delivery while prioritizing best practices like TDD and robust CI/CD workflows.…Hi, I’m Yonas Alem, a Senior Fullstack Engineer specializing in scalable backend systems and responsive frontend apps for fintech and enterprise platforms. I thrive with modern web stacks like Node.js, TypeScript, Redis, Next.js, and AWS, and I have a proven track record of microservice migrations, performance tuning (40%+ API speed gains), and building intuitive dashboards. I’m excited to contribute to remote teams delivering secure, maintainable software. I’m seeking remote full-time or freelance opportunities where I can apply my expertise in async-first environments, collaborate across disciplines, and drive reliable product delivery while prioritizing best practices like TDD and robust CI/CD workflows.

Yonas Alem

Full Stack Developer, Developer, Cloud Developer, +5

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Hi, I’m Yonas Alem, a Senior Fullstack Engineer specializing in scalable backend systems and responsive frontend apps for fintech and enterprise platforms. I thrive with modern web stacks like Node.js, TypeScript, Redis, Next.js, and AWS, and I have a proven track record of microservice migrations, performance tuning (40%+ API speed gains), and building intuitive dashboards. I’m excited to contribute to remote teams delivering secure, maintainable software. I’m seeking remote full-time or freelance opportunities where I can apply my expertise in async-first environments, collaborate across disciplines, and drive reliable product delivery while prioritizing best practices like TDD and robust CI/CD workflows.…Hi, I’m Yonas Alem, a Senior Fullstack Engineer specializing in scalable backend systems and responsive frontend apps for fintech and enterprise platforms. I thrive with modern web stacks like Node.js, TypeScript, Redis, Next.js, and AWS, and I have a proven track record of microservice migrations, performance tuning (40%+ API speed gains), and building intuitive dashboards. I’m excited to contribute to remote teams delivering secure, maintainable software. I’m seeking remote full-time or freelance opportunities where I can apply my expertise in async-first environments, collaborate across disciplines, and drive reliable product delivery while prioritizing best practices like TDD and robust CI/CD workflows.

Available to hire

Hi, I’m Yonas Alem, a Senior Fullstack Engineer specializing in scalable backend systems and responsive frontend apps for fintech and enterprise platforms. I thrive with modern web stacks like Node.js, TypeScript, Redis, Next.js, and AWS, and I have a proven track record of microservice migrations, performance tuning (40%+ API speed gains), and building intuitive dashboards. I’m excited to contribute to remote teams delivering secure, maintainable software.

I’m seeking remote full-time or freelance opportunities where I can apply my expertise in async-first environments, collaborate across disciplines, and drive reliable product delivery while prioritizing best practices like TDD and robust CI/CD workflows.

Skills

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Expert

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Intermediate

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Intermediate

Work Experience

Senior Fullstack Developer at Mereb Technologies

April 1, 2022 - November 18, 2025

Reduced API response time by 40% through SQL query optimization and Redis caching. Migrated monolithic backend to gRPC microservices, increasing throughput by 35% and enabling zero-downtime deployments. Implemented AWS S3-based cold storage, cutting monthly cloud costs by $8,000 with 99.9% durability. Led a team of 4 in refactoring a legacy PHP codebase and enforcing CI/CD pipelines, reducing deployment errors by 60%.

Full-Stack Developer at Affiliate.com

August 1, 2023 - August 1, 2023

Modernized a legacy PHP API to scalable Node.js architecture using tRPC, enabling support for 10K+ daily transactions. Automated financial reports using Python, saving 20+ hours/month of manual effort. Built internal dashboards with React and Tailwind CSS, adopted by 200+ users for real-time insights.

Frontend Developer at Eagleilon Systems Technology

April 1, 2022 - April 1, 2022

Delivered 4+ production-grade web apps from Adobe XD using React + Next.js, boosting client satisfaction by 25%. Integrated Visa, Mastercard, and Telebirr APIs with secure validation and fallback logic. Improved Lighthouse scores from 45% to 97% through advanced code-splitting and lazy loading strategies.

Backend/Fullstack Engineer at Autobridge Systems

July 1, 2025 - July 1, 2025

Developed scalable API backend to process complaint submissions, document approvals, and constituent recognition letters. Integrated voicemail-to-text transcription and automated classification using Azure Cognitive Services. Added features to enable cold call messaging and automated greetings & citations, improving citizen engagement. Optimized database queries which reduced data fetch time from 2 minutes for 500K rows to 5 seconds via indexing and cursor-based pagination.

Full Stack Developer at Upplai

June 1, 2025 - June 1, 2025

AI-Powered Resume Tailoring Platform: Integrated OpenAI models to generate customized resumes, cover letters, and ATS-readiness recommendations. Improved UX on mobile devices by refactoring UI and optimizing load speed. Delivered a responsive frontend with real-time resume scoring and document previews, resulting in 35% higher user engagement.

Frontend Developer at Eagleilon Systems Technology

March 1, 2021 - April 1, 2022

Delivered 4+ production-grade web apps from Adobe XD designs using React + Next.js, improving client satisfaction scores by 25% through enhanced UI/UX and faster load times. Integrated Visa, Mastercard, and Telebirr payment APIs with secure validation and fallback logic, increasing payment success rates by 15% and reducing transaction failures. Improved Lighthouse performance scores from 45% to 97% via code-splitting and lazy loading, resulting in 30% faster page loads and better SEO rankings.

Frontend/Backend Developer at Autobridge Systems

January 1, 2025 - July 1, 2025

Government Constituent Platform: Developed scalable API backend to process complaint submissions, document approvals, and constituent recognition letters. Integrated voicemail-to-text transcription and automated classification using Azure Cognitive Services. Added features to enable cold call messaging and automated greetings & citations, improving citizen engagement. Optimized database queries which reduced data fetch from 2 minutes for 500K rows to 5 seconds using indexing and cursor-based pagination.

Full Stack Developer at Real Gaming Poker NV (Poker Gambling Platform)

April 1, 2022 - August 1, 2025

Designed and implemented end-to-end UIs and backend APIs for real-time multiplayer poker modes; refactored database schema and optimized queries to support stable gameplay and transaction accuracy at scale. Built internal monitoring dashboards for fraud detection, daily balance verification, and bonus distribution audits. Reduced monthly server costs from $30K to $8K via architecture tuning and AWS resource optimization. Launched features like Premium Skins, Coins, Avatars, and reserve features to boost engagement.