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Klarenc Hajdërlli

Full Stack Software Engineer

[email protected] · Tirana, Albania · klarenc.quadtech.al

Summary

Frontend-focused Full Stack Software Engineer with 5+ years building high-performance, scalable web applications in React, Next.js and TypeScript. Strong full-stack capabilities across Node.js/NestJS, Spring Boot, PostgreSQL and REST APIs, with deep experience in ERP/enterprise systems and AI integrations. Pragmatic, high-agency, and obsessed with performance and accessibility.

Experience

Software Engineer · Nullius In Verba

May 2025 – Present
  • Build AI-powered, cross-platform products as Turborepo monorepos — React Native/Expo mobile, Next.js web + admin, NestJS APIs.
  • Integrate Claude Agent SDK + MCP assistants, LLM summarization/Q&A, and speech-to-text with diarization; sub-100ms transcription UIs.
  • Engineer backend services with NestJS, Prisma, PostgreSQL/PostGIS, Redis and BullMQ behind secure REST APIs.

Frontend Software Engineer · Hawkfields International Group

Apr 2023 – Apr 2025
  • Built an Instant Ticketing Management System and digital lottery games (GDK) in React.js & TypeScript.
  • Automated CI/CD pipelines, cutting release cycles from days to hours.
  • Maintained 95%+ test coverage (unit, integration, E2E) with zero critical production bugs.

Frontend Software Engineer · Service Factory Solution

Dec 2022 – Apr 2025
  • Developed an enterprise CRM/ERP system with PrimeFaces & Java, managing complex workflows and data integrity.
  • Optimized Oracle queries and schemas, improving system performance by 40%.

Full Stack Developer · BNT Electronics

Dec 2021 – Dec 2022
  • Built an ERP/Billing system (Angular + Spring Boot, OAuth 2.0, MySQL) serving 1000+ daily users.
  • Designed RESTful APIs and an internal CRM; reduced workflow friction by 30%.

Frontend Developer · Orderoo.ai

Jul 2021 – Dec 2021
  • Optimized a React food-ordering UI, reducing initial load time by 35% via memoization and lazy loading.

Frontend Developer · Stema Digital

Dec 2020 – May 2021
  • Built responsive landing pages and CRM features with React, Node.js and MySQL.

Skills

Frontend: React, Next.js, React Native, TypeScript, Tailwind CSS, Angular

Backend: Node.js, NestJS, Express, Spring Boot, Prisma

Data: PostgreSQL, PostGIS, Redis, Supabase, MySQL

AI: Claude Agent SDK, MCP, LLM (STT/TTS), Google Gemini

Tools & DevOps: Turborepo, pnpm, Docker, CI/CD, Vitest/Jest/Playwright

Education

M.Sc. Information Systems in Economy

University of Tirana — Faculty of Economics

2020 – 2022

B.Sc. Business Informatics

University of Tirana — Faculty of Economics

2017 – 2020