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Davor AndrejicDA
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Davor Andrejic

@davorandrejic

I build scalable backend APIs, databases, and search systems.

Zimbabwe
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What I'm looking for

I'm looking to build secure, high-performance APIs, database systems, and scalable server-side applications while solving complex technical challenges and collaborating closely with strong teams.

I've built and modernized backend systems for TinEye and self-employed e-commerce and newsfeed projects, using Node.js, NestJS, PostgreSQL, Elasticsearch, and Apache Solr. My work has reduced server response times by 150ms, improved database storage and retrieval by 35%, and enabled ranked newsfeeds to return hundreds of posts in milliseconds.

I bring seven years of experience across JavaScript, TypeScript, Python, and PHP, with a focus on secure, high-performance APIs and reliable database architecture. I enjoy solving complex technical challenges while collaborating closely with teams and clients.

Experience

Work history, roles, and key accomplishments

SE
Current

Full Stack Engineer

Self Employed

Aug 2022 - Present (4 years)

Optimized existing Express.js backend code, reducing server response time by an average of 150ms for E-commerce products. Implemented a score-based newsfeed algorithm using Elasticsearch and enhanced system performance with Nest.js and PostgreSQL.

Education

Degrees, certifications, and relevant coursework

UB

University of Belgrade

Bachelor's degree, Computer Science

2013 - 2018

Pursued a Bachelor's degree in Computer Science, focusing on core computer science principles and practices.

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