Péter Hadházi - Software Developer

Q: Where is Péter based?

Péter is based in Budapest, Hungary .

Q: What languages does Péter speak?

Péter speaks the following languages: Hungarian (Native), English (Advanced), German (Elementary) .

Q: How many years of experience does Péter have?

Péter has at least 16 years of experience. During this time, Péter has worked in at least 1 role and for 3 different companies . The average length of individual experience is 2 years and 6 months . Note that Péter may not have shared all experience and actually has more experience.

Q: What is Péter's latest experience?

Péter's most recent position is Software Developer at Quantum Health .

Q: What companies has Péter worked for in recent years?

In recent years, Péter has worked for Quantum Health and Crosskey Banking Solution Ltd .

Q: Which industries is Péter most experienced in?

Péter is most experienced in industries like Banking and Finance , Information Technology , and Media and Entertainment . Péter also has some experience in Healthcare .

Q: Which business areas is Péter most experienced in?

Péter is most experienced in business areas like Information Technology , Product Development , and Quality Assurance .

Q: Which industries has Péter worked in recently?

Péter has recently worked in industries like Banking and Finance , Information Technology , and Healthcare .

Q: Which business areas has Péter worked in recently?

Péter has recently worked in business areas like Information Technology , Product Development , and Quality Assurance .

Recommended expert

Budapest, Hungary

Check rate

Experience

Aug 2025 - Feb 2026

7 months

Software Developer

Quantum Health

As a member of the Data Engineering team, contributed to modernizing a large-scale healthcare data platform by designing backend integrations and optimizing data pipelines.
Designed and implemented a Spring-based Model Context Protocol (MCP) server module to enable seamless AI agent access to the GraphQL-based Claims API, enhancing automation capabilities.
Optimized data access performance by migrating stored procedures to SQL queries, significantly improving response times and maintainability.
Developed and maintained GraphQL API integrations within a Java/Spring Boot ecosystem, supporting cross-team data consumption.

Aug 2024 - Aug 2025

1 year 1 month

Sweden

Software Developer

Crosskey Banking Solution Ltd

Implemented the Angular based frontend of the Credit Origination module for POP Bank which provides functionalities for the credit decision, credit preparation and loan workflows.
Implemented REST services for Credit Origination, Credit Decision, and Core Bank backend services.
Implemented JUnit and Postman test cases.

Aug 2020 - Jul 2024

4 years

Sweden

Software Developer

Crosskey Banking Solution Ltd

Developed Vaadin-based Credit Origination module for Chili Bank.
Implemented REST services for Credit Origination and Credit Decision services.
Created JUnit and Postman test cases.

Oct 2019 - Jul 2020

10 months

Finland

Software Developer

Crosskey Banking Solution Ltd

The Open Banking project's goal is to provide REST based functionalities to give access to various banking data to the customers of the bank.
Migrated Customer Document, Customer Agreement and Cloud Archive modules from Spring to Spring Boot.
Created AWS CDK deployment configurations for Cloud Archive module.
Developed Swagger Oauth2 REST services and implemented JUnit/Postman test cases.

Mar 2018 - Sep 2019

1 year 7 months

Finland

Software Developer

Crosskey Banking Solution Ltd

The Cloud Archive module provides Amazon Cloud based document storing functionalities to store documents and agreements.
Designed and implemented AWS-based Cloud Archive service.
Created SOAP backend services and implemented data migration from legacy databases.

Apr 2016 - Feb 2018

1 year 11 months

Finland

Software Developer

Crosskey Banking Solution Ltd

The electronic signing of loans functionality is required and used by the Netbank and Cview applications to view and manage loans of the customers.
Developed Vaadin-based user interfaces and implemented SOAP backend services for loan management and KYC.

Apr 2016 - Sep 2016

6 months

Finland

Software Developer

Crosskey Banking Solution Ltd

The Sales Support module is designed to help the work of bank clerks to maintain contact and schedule meetings with customers and prospects.
Created Vaadin-based UIs and implemented backend services (SOAP).
Evaluated workflow engine options for banking process optimization.

Mar 2015 - Mar 2016

1 year 1 month

Finland

Software Developer

Crosskey Banking Solution Ltd

Customer 360 project is the main module of the Cview system. It provides web based functionalities to bank clerks to register/handle customers.
Created Vaadin-based UIs and implemented SOAP backend services for customer information services.

Aug 2014 - Feb 2015

7 months

Finland

Software Developer

Crosskey Banking Solution Ltd

Created and refactored backend services (SOAP) for the CARDS transaction module.

Oct 2010 - Jun 2014

3 years 9 months

Budapest, Hungary

Software Developer

P92 IT Solutions Kft.

Developed the Contract and Rights Management Applications backend services for CARMA (Sony Music).
Created REST services and implemented OCR capabilities.
Refactored and implemented new features for departments across the UK and US.

Aug 2009 - Sep 2010

1 year 2 months

Budapest, Hungary

Software Developer

P92 IT Solutions Kft.

Created batch processing and database optimization services for Global Release Scheduling System (GLORES).

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Information Technology, Media and Entertainment, and Healthcare.

Banking and Finance

Information Technology

Media and Entertainment

Healthcare

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, and Quality Assurance.

Information Technology

Product Development

Quality Assurance

Summary

Dedicated and highly skilled Software Developer with 17 years of experience in the design, implementation, and maintenance of enterprise banking and digital rights management solutions. I build backend systems that connect enterprise APIs to AI agents using Spring AI and the Model Context Protocol.

Skilled in Java, Angular, Vaadin, REST and SOAP services, Spring AI/MCP server and proficient in working within complex environments and Agile teams.

Skills

Programming: Java, Sql
Frameworks & Technologies: Angular, Vaadin, Rest, Soap, Graphql, Spring, Spring Boot, Spring Ai, Mcp Server, Swagger, Jboss, Mybatis, Hibernate, Lucene, Aws S3, Aws Cdk
Databases: Oracle, Ms Sql, H2
Tools & Build Systems: Docker, Kubernetes, Ant, Ivy, Gradle, Maven, Jenkins, Github Actions, Nexus, Cvs, Svn, Git, Bitbucket, Findbugs, Spotbugs, Pmd, Macker, Checkstyle, Flyway, Apollo Router
Tests: Junit, Selenium, Soapui, Postman
Project Management Tools: Jira, Confluence, Bitbucket

Languages

Hungarian

Native

English

Advanced

German

Elementary

Education

Sep 2002 - Jun 2009

Budapest University of Technology and Economics

M.Sc. Informatics, Specialization: Information and Communication Services · Informatics · Budapest, Hungary

Certifications & licenses

Licensed Computer Engineer

Statistics

Experience

Total positions 11

Experience in Banking and Finance 11 y

Avg length 1 y 6 m

Longest experience 3 y 11 m

Global Experience

Countries worked in 3 (Finland, Sweden, Hungary)

Primary country Finland

Expertise

Recent roles Software Developer

Main industries Banking and Finance, Information Technology, Media and Entertainment

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Master

Certifications earned 1

Profile

Created

May 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Péter based?

Péter is based in Budapest, Hungary.

What languages does Péter speak?

Péter speaks the following languages: Hungarian (Native), English (Advanced), German (Elementary).

How many years of experience does Péter have?

Péter has at least 16 years of experience. During this time, Péter has worked in at least 1 role and for 3 different companies. The average length of individual experience is 2 years and 6 months. Note that Péter may not have shared all experience and actually has more experience.

What roles would Péter be best suited for?

Based on recent experience, Péter would be well-suited for roles such as: Software Developer.

What is Péter's latest experience?

Péter's most recent position is Software Developer at Quantum Health.

What companies has Péter worked for in recent years?

In recent years, Péter has worked for Quantum Health and Crosskey Banking Solution Ltd.

Which industries is Péter most experienced in?

Péter is most experienced in industries like Banking and Finance, Information Technology, and Media and Entertainment. Péter also has some experience in Healthcare.

Which business areas is Péter most experienced in?

Péter is most experienced in business areas like Information Technology, Product Development, and Quality Assurance.

Which industries has Péter worked in recently?

Péter has recently worked in industries like Banking and Finance, Information Technology, and Healthcare.

Which business areas has Péter worked in recently?

Péter has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.

What is Péter's education?

Péter holds a Master in Informatics from Budapest University of Technology and Economics.

Does Péter have any certificates?

Péter has 1 certificate: Licensed Computer Engineer.

What is the availability of Péter?

The availability of Péter needs to be confirmed.

What is the rate of Péter?

Péter's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.