Artur Przychodzeń

Senior Software Engineer

Gdynia, Pomorskie, Poland21 yrs experience

AI EnabledAI ML Practitioner

Key Highlights

Expert in Java and Spring frameworks for robust backend solutions.
Proven track record in Fintech and scalable system design.
Mentor for developers mastering Spring and AI tools.

Stackforce AI infers this person is a Backend-focused developer in Fintech and SaaS industries.

Contact

Skills

Core Skills

JavaSpring FrameworkMicrosoft AzureGraphqlScala In SparkApache Kafka

Other Skills

HibernateSpring WebfluxWebSocketRepresentational State Transfer (REST)FIXDockerKubernetesGrafanaInfluxDBJUnitMockitoAgileWebFluxOAuthJSON Web Token (JWT)

About

Backend developer. Java, Spring, microservices. I've built systems across banking, retail, education, security, and IT — mostly the kind that need to work when they can't afford not to. My stack: Java, Spring Boot, AWS, Azure. Architecture-first thinking. I prefer systems that are easy to reason about over ones that are impressive to describe. I use AI coding tools daily — Claude Code, Codex, Gemini — not as a shortcut, but as a way to move faster without cutting corners. Code review, refactoring, exploration. It's part of how I work now. Lately I've started sharing this with other devs — live demos, workflow breakdowns, what actually works in production versus what looks good in a tutorial. Currently open to contacts and side projects. If you're dealing with scaling issues, a migration that keeps getting postponed, or a distributed system that's grown past its original design — feel free to reach out.

Experience

21 yrs

Total Experience

4 yrs

Average Tenure

9 mos

Current Experience

Antal poland

Senior Software Engineer

Aug 2025 – Present · 9 mos

Wyden

Senior Software Engineer

May 2023 – Jul 2025 · 2 yrs 2 mos · Poland · Remote

Implemented new features and maintained existing functionalities in a crypto trading platform
using Java 11, Spring, WebFlux, Hibernate, InfluxDB, and Grafana, REST API, WebSockets, FIX
protocol, using Flyway for database schema migration and using Docker and Kubernetes.

JavaSpring FrameworkHibernateSpring WebfluxWebSocketRepresentational State Transfer (REST)+8

Rits

Senior Software Engineer

Oct 2021 – Apr 2023 · 1 yr 6 mos · Poland · Remote

Designing and developing a robust deployment system for till devices at Marks and Spencer,
facilitating efficient testing and roll-out of new applications. Leveraged Micronaut framework and
Java 17 for a performant backend, hosted on Azure cloud infrastructure for scalability, creating and
configuring pipelines and preparing deployment scripts. Implementing secure authentication using
OAuth2, JWT, and Keycloak. Utilised Domain-Driven Design for a maintainable architecture and
Event Sourcing for real-time data updates and history of changes stored in Cosmos DB. Employed
BDD with Cucumber tests for comprehensive test coverage.
Developing the backend for a mobile loan application used by SCB bank in Thailand. Built a
GraphQL micro-services architecture using Spring Boot and JPA for modularity and scalability.
Worked closely with the client to translate their requirements into a secure and user-friendly
application, adhering to Test-Driven Development (TDD) principles and clean code practices.

JavaMicrosoft AzureOAuthJSON Web Token (JWT)KeycloakDomain-Driven Design (DDD)+10

Jit team @ nordea

2 roles

Java/Scala senior developer, tech lead

Dec 2019 – Sep 2021 · 1 yr 9 mos

Design and develop solution for preparing reports using Apache Spark and Scala.

Tech leadScala in SparkHaddopApache Kafka

JAVA and OSB Developer

Apr 2012 – Dec 2019 · 7 yrs 8 mos

Design and develop software modules for integration internal bank systems based on Oracle Service Bus, Web Logic Message Queues and Apache Kafka Topics, Java 7.
Design and develop backend system based on Java 8, JSON (Jersey), MongoDB, RxJava, Vert.X, Hibernate, Web Services.
Implementation of a new functionalities for internal bank system using Oracle BPM, Oracle DB, Web Logic Server, Web Services, Java 6, Oracle Service Bus.

JavaApache KafkaMongoDBRxJavaVert.xRESTful WebServices+4

Intel

Software Developer

Sep 2009 – Mar 2012 · 2 yrs 6 mos · Gdansk, Pomeranian District, Poland

Desing, develop, bug fixing using C# .NET, C++, Phyton and SQL of multithreaded and multi layer system organized in agile manner with extensive automaitve testing system.