Budapest / Paris
Remote/HomeOffice
+36 30 527 2000
Profile

Senior backend engineer specializing in distributed, event-driven systems and production-grade architecture.
Demonstrated architectural ownership and operational awareness.
Exploring AI-assisted engineering workflows to improve system design and developer effectiveness.

Languages
English
French
Leadership & Working Style
Structured decision-making under pressure
Ownership across architecture and operations
Systems thinking in ambiguous domains
Clear technical communication
Interests
Fencing, Sailing, Cognitive Sciences, Indoor Gardening, Animal rescue
Krisztina Nagy
Backend Engineer
Distributed Systems & Architecture
Core Expertise
Distributed Architecture

Kafka, Quarkus, Spring Boot, multi-tenant OAuth2/JWT, eventual consistency, resilience, OpenTelemetry

Backend Engineering

Java 17+, REST/GraphQL, MongoDB, relational DBs, Liquibase/Flyway, secure API integrations

Cloud & Platform

Kubernetes/OpenShift, CI/CD (GitLab/Jenkins), containerization, observability (Jaeger, Loki, Grafana)

AI-Assisted Engineering Workflows

Practical use of AI tools (Copilot, LLMs) for documentation, reasoning, and architectural exploration

Professional Experience
Software Engineer Agile V—Partner Services and Billing
Deutsche Telekom ITTC Budapest
Since March 2024

  • Designed Kafka-driven distributed workflows with MongoDB state handling.

  • Led architectural discussions for tenant isolation and event reliability.

  • Integrated secure API flows via TARDIS (OAuth2/JWT-based multi-tenant scope model).

  • Implemented OpenTelemetry-based tracing and log correlation strategy.

  • Contributed to architectural decision records and long-term system integrity

Backend Developer
Finshape Hungary Budapest
From October 2022 to February 2024

  • Developed Spring Boot/WebFlux microservices in financial domain

  • Contributed to DB2 → Oracle migration (Liquibase, controlled rollout)

  • Implemented REST & GraphQL APIs with secure authentication

  • Worked on Kafka & RabbitMQ messaging workflows

  • CI/CD & container deployments in regulated enterprise infrastructure

Application Developer
IBM Budapest
From November 2019 to October 2022

  • Contributed to application restructuring during IBM’s Red Hat/Kyndryl transformation

  • Migrated legacy human-agent bulk workflows to automated, asynchronous machine-to-machine event processing (RabbitMQ, callbacks)

  • Implemented secure distributed API integrations (SSO, JWT/JWS) within cloud-native environments (Kubernetes/OpenShift)

  • Promoted for impact in automation and architectural modernization

Voluntary Leadership & Standards Governance
Head Referee – National HEMA Community (Voluntary)
MHS Hungary
Since January 2026

  • Introduced internationally aligned refereeing standards

  • Designed governance framework ensuring consistent rule interpretation

  • Led cross-organizational alignment and education

Education
Java Backend Developer
Green Fox Academy Budapest
From January 2019 to May 2019
Engineering Manager, Corporate Financial Analyst MSc
University of Technology and Economics Budapest
From September 2005 to June 2010
Fencing Coach
Semmelweis University Budapest
From 2013 to 2014
@thenagykriszta