Stefan Lukić

Hi, I'm Stefan Lukić

Software Engineer

I have extensive experience in web application development using Java, Spring Boot, Node.js, ElasticSearch, React, Next.js, GCP, TypeScript, MongoDB, PostgreSQL, Redis, Kafka, Docker, WebSockets, Redux, and other technologies. Experience in both frontend and backend development with an interest in AI and data engineering, including implementing personal RAG solutions.

5+
Years Experience
20+
Projects Completed
10+
Happy Clients
Stefan Lukić

About Me

My Journey

I'm a passionate software engineer with years of experience in web application development. I specialize in both frontend and backend development, with expertise in Java, Spring Boot, Node.js, React, Next.js, and cloud technologies. I have a strong interest in AI and data engineering, including implementing personal RAG solutions. Throughout my career, I've worked on diverse projects ranging from VR systems and health management platforms to e-commerce search engineering and orderability systems.

My Mission

“To create innovative, scalable, and user-centered solutions that leverage cutting-edge technologies to solve real-world problems.”

Technical Skills

frontend

React90%
Next.js88%
TypeScript90%

backend

Java95%
Spring Boot90%
Node.js80%
Python70%

database

ElasticSearch80%
PostgreSQL80%
MongoDB80%
Redis75%

devops

GCP80%
Docker80%
Kafka65%
5+
Years of Experience
20+
Projects Completed
15+
Technologies Mastered

Featured Projects

Here are some of my own projects I've worked on. Each one represents a unique challenge and learning experience.

Virtual Immersive Conference VR System
Featured

Virtual Immersive Conference VR System

Developed a comprehensive platform for VR and virtual meetings with avatars, including video meeting support. Implemented microservice architecture, became team lead, and optimized backend and event communication between microservices.

JavaSpring BootWebSocketsMicroservicesVR TechnologyDocker
CodeLive Demo
Health Management System
Featured

Health Management System

Built MVP for health risk management platform using bot forms and AI for improved patient-doctor communication. Implemented intelligent forms and AI-driven communication systems.

ReactNode.jsAI/MLBot FormsMongoDBExpress
CodeLive Demo
Orderability and Eligibility Platform

Orderability and Eligibility Platform

Worked for a major global retailer using Java, React/Next.js, and GCP. Developed and maintained orderability and eligibility systems for e-commerce operations.

JavaSpring BootReactNext.jsGCPPostgreSQL
CodeLive Demo
E-Commerce Search Engineering

E-Commerce Search Engineering

Managed ElasticSearch indexes, queries, and deployments to GCP. Optimized search functionality for large-scale e-commerce platforms.

ElasticSearchLuceneGCPJavaDockerJenkins
CodeLive Demo
Personal RAG Solution

Personal RAG Solution

Implemented personal Retrieval-Augmented Generation (RAG) solutions for AI-powered applications. Developed custom AI workflows and data processing pipelines.

PythonAI/MLRAGVector DatabasesFastAPIDocker
CodeLive Demo
Microservices Architecture

Microservices Architecture

Designed and implemented microservice architectures with event-driven communication, containerization, and cloud deployment strategies.

JavaSpring BootKafkaDockerGCPRedis
CodeLive Demo
View More on GitHub

Work Experience

My professional journey in software development and engineering.

Software Engineer

Sep 2024 - Present

Grid Dynamics Inc.

  • •Working on The Home Depot Orderability and Eligibility project
  • •Search engineering: index creation, search query building, deployments to GCP Cloud Run and VMs
  • •Implementing and optimizing ElasticSearch solutions for e-commerce platforms
  • •Collaborating with cross-functional teams to deliver scalable solutions
  • •Managed ElasticSearch indexes, queries, and deployments to GCP
JavaSpring BootElasticSearchApache SolrApache SparkLuceneGCPReactNext.jsDocker

Software Engineer Lead

Mar 2021 - Sep 2024

OviiTechnologies Plc / GappApp

  • •Led development of Virtual Immersive Conference VR System with microservice architecture
  • •Became team lead and optimized backend and event communication between microservices
  • •Built MVP for Health Management System using bot forms and AI
  • •Built legal-tech AI based tool, worked on MVP and V1
JavaSpring BootReactNext.jsElasticSearchGCPDockerWebSocketsAI/ML

Get In Touch

I'm always interested in hearing about new opportunities and exciting projects. Let's work together!

Let's Connect

I'm currently available for freelance work and full-time opportunities. Feel free to reach out if you'd like to discuss a project or just say hello!

Email

stefan.lukic777@gmail.com

Phone

Available upon request

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