Stanisław Zarycki

Software Engineer crafting reliable digital products, scalable systems, and distributed architectures.

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Skills and technologies
used in my daily work.

Programming languages

JavaScript
JavaScript
Python
C#
C++
C

Technologies

NodeJS
NestJS
Express.js
Fastify
FastAPI
GraphQL
PostgreSQL
MongoDB
MDB-VLogo_Black
MariaDB
Docker
AWS
RabbitMQ

Concepts

Rest API
SOLID
Concurrency
Software Testing
Message Queue
Scrum

Experience
building commercial products.

Nokia

Software Developer (Working Student)

Scrum

2026 - currently

Developing and maintaining an internal network protocol analysis tool utilized by thousands of engineers across global teams. Implementing high-throughput data processing routines, optimizing payload parsing logic, and actively contributing to automated test suites within an Agile environment.

MasterBorn

Junior Backend Developer > Backend Developer

REST API
Software Testing
Scrum

2022 - 2025

Designed and maintained resilient backend architectures using Node.js, TypeScript, and Nest.js/Fastify. Authored Architecture Decision Records (ADRs) for critical system workflows, handled asynchronous message processing via RabbitMQ, and managed cloud infrastructure with AWS and Docker. Optimized relational (PostgreSQL) and NoSQL (MongoDB) database queries for high availability.

Klarna

Junior JavaScript Developer

Scrum

2021 - 2022

Maintained and created core object configurations and data schema validations using JavaScript, JSON, and YAML. Collaborated closely with cross-functional QA teams to investigate, debug, and resolve edge-case issues in automated workflows.

BAAD Games

JavaScript Developer

PhaserJS

2019 - 2020

Built interactive HTML5 playable ads and standalone mini-games from concept to production using JavaScript and the Phaser framework. Focused on cross-browser compatibility, asset optimization, and smooth 60 FPS rendering under constrained network environments.

Ready to collaborate?

Let's get in touch.