Gábor C.

GáborCsSoft Kft is an independent consulting company providing senior-level engineering support to large-scale enterprise clients in banking, insurance, and financial services. The work focuses on cloud-native backend systems, microservices, and modernizing legacy platforms into scalable, containerized architectures.

• Built and maintained Spring Boot 3 microservices in Java 17–21 (and Kotlin where required), following clean code principles, modular design, and well-defined microservice boundaries
• Delivered backend-heavy features, including pricing logic for retail insurance products, by integrating with decision engine services via REST and Kafka
• Migrated legacy AngularJS admin interfaces to modern Angular 17+, reducing admin-side wait times by ~70% and improving maintainability
• Implemented event-driven communication between services using Apache Kafka and designed reliable retry and compensation workflows
• Extended and stabilized Camunda-based workflows by adding custom Java extensions and improving retry logic, reducing failed job escalations by ~35%
• Deployed fully containerized services (Docker + Kubernetes) on AWS, using CI/CD pipelines and Infrastructure-as-Code to ensure reproducible deployments
• Worked end-to-end on features under a “you build it, you own it” mindset: development, testing (JUnit, Cypress), documentation, deployment, and post-release support

OTP Bank is one of the largest banking groups in Central and Eastern Europe. Gabor worked as a Software Architect / Solution Architect, driving technical strategy, defining standards, and supporting multiple development teams across critical banking platforms.

• Designed service architectures for multiple product teams, created PoCs, patterns, and reference implementations to unblock development
• Drove API-first development using OpenAPI, standardized auditing with Hibernate Envers, and enforced testable microservices using Testcontainers
• Introduced Kafka-based messaging guidelines and integration patterns for inter-service communication and event propagation
• Led integrations with Hungarian government systems to automate regulatory reporting, reducing manual reporting time from ~20 hours/month to ~2 hours/month
• Contributed to long-term architecture vision (scalability, observability, security), ensuring business requirements were built on future-proof foundations
• Designed search database concepts for online real estate estimation and contributed to distributed ledger (DLT) initiatives inside the bank
• Defined Java chapter standards for logging, security, and auditing, and mentored senior engineers in applying these guidelines

GE Healthcare is a global medical technology and diagnostics company. In this role, Gabor acted as a Staff Engineer and Lead Developer, balancing IC work with technical leadership across multiple products and teams.

• Led modernization initiatives across several healthcare platforms, including creating PoCs to prove the feasibility of new architecture and performance goals
• Defined a migration path from legacy Spring 4 applications to Spring Boot 2.x with WebFlux, enabling reactive programming and reducing AWS infrastructure costs by ~30% (lower CPU/memory usage and cheaper EC2 instances)
• Improved the reliability of a 24/7 business-critical application, reducing average downtime from ~30 hours/month to ~3 minutes/month by redesigning throttling, caching, and fault isolation mechanisms
• Developed security and access control workflows (OAuth2, role-based access control) for REST endpoints integrated with GE’s internal authentication systems
• Drove the organization toward continuous delivery readiness in legacy systems by improving CI/CD pipelines, defining build and deployment standards, and containerizing services (Docker + Kubernetes)
• Delivered internal technical sessions and knowledge-sharing events to align teams on performance tuning, observability, and non-functional requirements

Gabor worked on an internal Shop Floor Execution application used by GE Aviation and GE Power repair facilities to manage repair workflows for complex components like turbines and motors. The system was delivered as a distributed microservice architecture.

• Designed and implemented complex backend features in Java and Spring Boot, breaking large process flows into reliable microservices
• Owned backend services end-to-end: data model design, API design, persistence layer (Hibernate/JPA), testing, and deployment readiness
• Coordinated integration with other microservice owners to maintain interoperability and data consistency across the platform
• Drove code quality through clean code practices, CI/CD, and test-driven development (JUnit); wrote guidelines and onboarding materials
• Integrated authentication and security layers with OAuth2 and contributed to the rollout of cloud-native deployments using Docker and container orchestration

Navitasoft develops energy trading and market balancing solutions for the gas and electricity sectors. Gabor contributed to a trading platform used by major energy companies in Hungary, which was later adopted by a leading Croatian gas trading firm.

• Delivered full-stack features within a Scrum team, covering backend (Java, Spring, Hibernate) and frontend (AngularJS, migrating to Angular 2 with TypeScript).

• Implemented and optimized accounting and contract management modules, enhancing reliability and decreasing processing times.

• Practiced TDD and continuous integration; wrote business-driven tests with JBehave to cover complex trading and settlement logic.

• Maintained clean code and modular boundaries across services to support long-term maintainability.

• Mentored a junior developer and supported the rollout of new modules to production environments in multiple countries.

• Contributed to performance tuning in core financial and settlement logic, ensuring accuracy under real trading loads.

Qualysoft is an international IT services company. Gabor contributed to Porsche Informatica’s CrossNG platform, an enterprise system managing the full vehicle lifecycle (sales, service, accounting). The platform was initially rolled out in China (~300 users) and later expanded to the German market.

• Developed shared “Common” module features used across Sales, Service, and Accounting submodules, ensuring consistency and reuse.

• Implemented business logic for appointments, tasks, calendars, and vehicle data management, including synchronization flows between modules.

• Built backend components in Java 7 with Spring and Hibernate, and contributed to front-end development in Apache Tapestry (component-based UI).

• Assisted in designing and maintaining integration and synchronization logic between the new platform and legacy systems in Germany, using Liquibase for schema evolution.

• Worked in a distributed setup (Budapest, Salzburg, Linz), requiring clear communication, code reviews, and alignment across locations.

• Supported the rollout into new markets, ensuring stability, localization, and regulatory compliance.

Clarity Consulting is a software development and consulting firm that delivers custom systems to large enterprises. Gabor worked on an internal CRM and customer insight platform for Erste Bank used by over 900–1,000 bank employees nationwide.

• Developed backend logic in Java EE 6 (hosted on WebLogic) to support segmentation, churn prediction, and proactive offer generation for bank staff.

• Created SQL queries for Oracle 11g and implemented business rules to categorize customers into segments based on behavior and risk signals.

• Built interactive front-end screens using IceFaces (based on JSF), allowing branch staff to offer personalized products in real-time during customer interactions.

• Assisted in creating forecasting tools to identify potential churn risk (“will this client leave the bank?”), facilitating proactive outreach.

• Worked in quick, iterative mini-sprints (3–5 days), delivering production updates swiftly in a highly regulated environment.

Continental Teves (Continental AG) is a global Tier-1 automotive supplier. Gabor worked on embedded braking systems for automotive OEMs, including Honda and GM.

• Implemented network communication logic in C for an embedded braking control unit in the Honda Pilot program, contributing to a successful production release in the US market.

• Developed C++ scripts for real-time simulators to validate embedded behavior under safety and timing constraints.

• Built Eclipse plugins in Java to improve developer productivity (for example, automating duplicate code detection and improving searchability across modules).

• Participated in support for braking system electronics used in multiple GM vehicles.

• Collaborated with international teams on safety-critical software, following strict automotive quality and reliability standards.