# Pawel Hoszowski

Pawel Hoszowski is a remote worker on Himalayas, Senior Software Engineer, Java Data Platforms at Allegro, based in Poland.

Source: https://himalayas.app/@pawelhoszowski

```text
Senior Software Engineer at Allegro building Java and Kafka data platforms, including a master data platform serving 20M+ active entities.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Poland |
| Authorized to work in | Poland |
| Salary expectations | 400k+ CZK |
| Job categories | Software Engineer, Backend Engineer, Data Platform Engineer |
| Skills | Java, Kafka, Kafka Streams, Spring Boot, Distributed Systems, Real time processing, Master Data Management, Data Mesh, Apache Spark, Scala, GraphDb, Resource Description Framework (RDF), SPARQL, JVM Concurrency, Java Memory Model |
| LinkedIn | https://linkedin.com/in/pawel-hoszowski-803b78422 |

## About

```text
At Allegro, I develop a Customer & Seller Master Data Platform with Java 17, Spring Boot 3, Kafka, and GraphDB. It consolidates identity, profile, payment-account, and relationship data for real-time data products.

I tune high-throughput Java services and Kafka Streams workflows, cutting p99 API latency by 35% and cross-system data inconsistency by 42%. I also model connected entities with RDF/SPARQL and contribute Scala/Spark Structured Streaming enrichment jobs for real-time graph updates across 20M+ active entities.

At EPAM Systems, I built a Financial Crime & Master Data Platform for a banking client. Its streaming architecture sustained 120K+ events per second during compliance peaks, and MDM matching and survivorship work reduced reconciliation defects by 38%.

Earlier, at Netguru, I developed Java backend services for real-time commerce and improved p95 response time from 240 ms to 155 ms during load tests. Across these roles, I’ve worked on regulated data workflows, production reliability, and containerized platforms.
```

## Experience

### Senior Software Engineer, Java Data Platforms (current)

[Allegro](https://himalayas.app/companies/allegro). Aug 2023 - Present

```text
Develops a Customer & Seller Master Data Platform using Java 17, Spring Boot 3, and Kafka, consolidating identity and relationship data. Tunes high-throughput Java services, cutting p99 latency by 35% and reducing data inconsistency by 42%.
```

Skills: Java-17, Spring-Boot-3, Kafka, Kafka-Streams, GraphDb, Resource-Description-Framework-(RDF), SPARQL, Scala, Spark-Structured-Streaming, Kubernetes, Operator-SDK, Docker, Helm, AWS, S3, Iceberg, Parquet, Snowflake, OpenTelemetry, Prometheus, Grafana, SLOs, JFR, AsyncProfiler, ExecutorService, CompletableFuture, Avro, Schema-Registry, Data-Mesh, MDM

### Software Engineer, Java & Distributed Data Systems

[EPAM Systems](https://himalayas.app/companies/epam-systems). Apr 2019 - Mar 2023

```text
Built a Financial Crime & Master Data Platform for a banking client, using Java, Spring Boot, Kafka, and GraphDB. Designed real-time streaming architecture sustaining 120K+ events/second and reduced reconciliation defects by 38%.
```

Skills: Java-11, Java-17, Spring-Boot, Kafka, GraphDb, Scala, Spark, MongoDB, Docker, OpenShift, Kubernetes, Helm, G1GC, JFR, Kafka-Streams, MDM, Data-Governance, Compliance, Fraud-Detection, Sanctions-Screening, Transaction-Monitoring

### Software Engineer, Java Backend

Netguru. May 2015 - Mar 2019

```text
Developed Real-Time Commerce Services using Java 8/11 and Spring Boot, synchronizing customer, catalog, and order data. Improved concurrent request processing, lowering p95 response time from 240 ms to 155 ms.
```

Skills: Java-8, Java-11, Spring-Boot, Kafka, RabbitMQ, PostgreSQL, MongoDB, Docker, Kubernetes, CompletableFuture, ExecutorService, Integration-Testing, Contract-Testing, Structured-logging, Dashboarding

## Education

### AGH University of Krakow

Bachelor of Science, Computer Science. 2011 - 2015

```text
Bachelor of Science in Computer Science from AGH University of Krakow, completed in 2015.
```

## Tech stack

- Snowflake
- Apache Spark
- Kubernetes
- Helm
- Debezium
- PostgreSQL
- MongoDB
- Spring Boot
- Redis
- Terraform
- Gradle
- Java
- Scala
- Kafka
- RabbitMQ
- Grafana
- Prometheus
- OpenTelemetry
- Avro
- Kafka Streams
- Docker
- GraphDb
- Apache Iceberg
- Ontotext GraphDB
- RDF
- SPARQL
- Apache Kafka

To contact Pawel, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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