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Gabriel Krzizanowski

@gabrielkrzizanowski

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Software Developer III at Senior Sistemas building Java payroll microservices for Senior X HCM.

Brazil

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At Senior Sistemas, I build and evolve Controladoria da Folha X, a payroll control product within the Senior X HCM platform. I develop Java 17 and Spring Boot services in a multi-tenant microservices architecture, using RabbitMQ messaging and Azure and Kubernetes deployments.

At Infios, a Körber Supply Chain company, I developed APIs for logistics operations and customized the HighJump WMS platform. I also built integrations across internal and customer-facing services using JSON and XML.

At Benner, I developed payroll and labor-law features for an enterprise HR product and maintained Delphi routines alongside newer .NET services. I also built a clinical management system in Go and Gin, now used daily by a pediatric physiotherapy clinic.

Experience

Work history, roles, and key accomplishments

Current

Software Developer III

Current

Senior Sistemas

Jun 2026 - Present (5 months)

Builds and evolves Controladoria da Folha X, a payroll control product inside the Senior X HCM platform, on a multi-tenant microservices architecture. Designs and implements Java 17 and Spring Boot services with RabbitMQ event-driven messaging, deployed to Azure and Kubernetes.

Java 17 Spring Boot RabbitMQ Azure Kubernetes ArgoCD ArgoWorkflows PostgreSQL MySQL Redis Elasticsearch AI assisted Development Claude Code Amazon Kiro Prompt Engineering

Software Developer

Infios, a Körber Supply Chain company

Apr 2025 - May 2026 (1 year 1 month)

Developed and maintained APIs backed by Oracle and SQL Server for logistics and supply chain operations. Customized and integrated the HighJump WMS platform and built system integrations using JSON and XML payloads on Azure.

Oracle SQL Server HighJump (WMS)JSON XML Azure REST APIs Supply Chain Logistics

Software Developer (C# .NET)

Benner

Dec 2023 - Mar 2025 (1 year 3 months)

Developed payroll and labor-law features for an enterprise HR product using C# .NET with Oracle and MySQL. Maintained and modernized legacy Delphi routines and contributed full-stack with JavaScript and Python.

C#.NET Oracle MySQL Delphi JavaScript Python Fullstack Development

Full-Stack Python Developer

CloudPark

Feb 2023 - Nov 2023 (9 months)

Developed a cloud-based parking management system with Python and Django, spanning hardware integration, cloud services and mobile clients. Worked across the stack with Angular, Vue, Android, RabbitMQ, MQTT, AWS, and Azure.

Python Django Angular Vue.Js Android RabbitMQ MQTT AWS Azure Shell Scripting Linux

Delphi Developer

SCI Sistemas Contábeis

Aug 2021 - Feb 2023 (1 year 6 months)

Developed features and integrations for accounting and tax software, including integrations with Brazilian government portals via XML and JSON APIs. Started as an intern and was hired as a full developer after eight months.

Delphi XML JSON REST APIs Accounting Tax Software

Education

Degrees, certifications, and relevant coursework

PUC Minas

Postgraduate Specialization, Software Engineering

2025 -

Pursuing a Postgraduate Specialization in Software Engineering, with a capstone project on payroll microservices in Java, Spring Boot, Docker, and Azure with CI/CD.