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About

The person behind the backend work.

A little context

I'm Jakub Kuźnicki, a Computer Science engineer working on backend development and system architecture. Since June 2026 I've been a Junior Java Developer at Netcompany.

Before that, I spent a backend internship at Paweł Weselak — Pragmatyczne Programowanie (March–June 2025), building LangChain ingestion pipelines and RAG systems with LangChain4j and Spring Boot. I now keep that same curiosity close to the infrastructure layer through a bare-metal home server.

What I build

01

Backend systems

Java and Spring Boot services, backed by the data and deployment choices a product needs.

02

RAG workflows

Document ingestion and grounded answers with LangChain4j or LangChain, from experiments to working applications.

03

Hands-on infrastructure

A home bare-metal server gives me a practical place to learn networking, virtualisation and delivery.

A short path

  1. 01

    2025 · Backend internship

    LangChain ingestion pipelines, RAG systems, containerisation and LLM-driven data processing.

  2. 02

    2026 · Netcompany

    Junior Java Developer working on enterprise-level Java software.

  3. 03

    Now · Independent work

    todrawn.com, LlamaTalks and infrastructure experiments turn the same ideas into shipped projects.

Away from the editor

RAG & LLM

I like taking an AI idea through ingestion, retrieval and an interface people can actually use.

Cycling

My bike is a Romet Mustang M1 CS 19" 29". I ride both off-road and road routes.

My Romet Mustang bike

Strength training

Training is a useful counterweight to long hours at a screen.

The workspace

Gear, if you're curious

PC

  • CPU: Ryzen 7 5800X3D
  • RAM: 32GB Trident Z 3200Mhz
  • MOBO: B450 Gigabyte Aorus Elite
  • GPU: RTX 4070 Super Aorus Master
  • SSD 1: Patriot P400 Lite 1TB
  • SSD 2: Lexar NM620 2TB
  • Case: NZXT H7 Flow
  • Cooler: Arctic Liquid Freezer III 360mm

Peripherals

  • Keyboard: Custom (Case 5075 VIA, Akko Botany switches, BoW Keycaps)
  • Mouse: Dark Project Nexus
  • Monitors: Alienware AW3425DW & PL2470HS
  • Microphone: Novox NC1
  • Headphones: Arctis 7 & Airpods 2 Pro

Laptop

Macbook Pro 14" (M1 Pro, 10c CPU, 16c GPU, 16GB RAM, 1TB SSD)