Bela Bocsak - Full Stack Lead Developer, Backend Architect

Q: Where is Bela based?

Bela is based in Munich, Germany .

Q: What languages does Bela speak?

Bela speaks the following languages: German (Advanced), Hungarian (Intermediate) .

Q: How many years of experience does Bela have?

Bela has at least 38 years of experience. During this time, Bela has worked in at least 5 different roles and for 11 different companies . The average length of individual experience is 3 years and 2 months . Note that Bela may not have shared all experience and actually has more experience.

Q: What is Bela's latest experience?

Bela's most recent position is Full Stack Lead Developer, Backend Architect at Telefonica (O2) .

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

In recent years, Bela has worked for Telefonica (O2) and MediaMarktSaturn .

Q: Which industries is Bela most experienced in?

Bela is most experienced in industries like Information Technology (IT) , Insurance , and Telecommunication . Bela also has some experience in Pharmaceutical , Automotive , and Banking and Finance .

Q: Which business areas is Bela most experienced in?

Bela is most experienced in business areas like Information Technology (IT) , Product Development , and Sales . Bela also has some experience in Logistics , Business Intelligence , and Finance .

Q: Which industries has Bela worked in recently?

Bela has recently worked in industries like Telecommunication and Retail .

Q: Which business areas has Bela worked in recently?

Bela has recently worked in business areas like Information Technology (IT) , Product Development , and Logistics .

Recommended expert

Munich, Germany

Experience

Jul 2022 - Present

3 years 8 months

Full Stack Lead Developer, Backend Architect

Telefonica (O2)

The software supports the complete planning and approval of antennas for mobile telephony.
The system was implemented using an event-driven microservice architecture for cloud-native deployment with Quarkus on the backend, Kafka for communication, and Angular for the frontend. Services run on Kubernetes in Google Cloud. A special challenge was synchronizing with the legacy system still used by some users.

Sep 2020 - Jul 2022

1 year 11 months

Full Stack Developer, Frontend Architect

MediaMarktSaturn

Managed payments, refunds, goodwill cases, outbound and return shipments for the MediaMarktSaturn online shop.
Replaced the legacy Spring/Vaadin system with a microservice architecture using Spring Boot, Kafka, Kubernetes, Google Cloud, GitOps, Terraform, and Kibana. Developed a new frontend in Angular.

Aug 2016 - Aug 2020

4 years 1 month

Full Stack Lead Developer, Architect

Münchener Rückversicherung AG

Developed a complex C2B and B2B savings product family with mobile app and web application, supporting multi-tenant portfolio management.
Built hybrid Ionic/Angular and native iOS/Android apps. Implemented backend dispatch on Node.js delegating to dozens of Spring Boot microservices communicating via Kafka and orchestrated with Camunda. Deployed on Kubernetes in AWS (later migrated from Azure).

Nov 2015 - Aug 2016

10 months

Full Stack Developer

Allianz AG

Redesigned and reimplemented the corporate web content management system used in 70 countries for local web presence.
Migrated to new technologies, delivering a fully redesigned functional and technical solution.

Apr 2015 - Oct 2015

7 months

Full Stack Lead Developer, Architect

Allianz AG

Created a mobile and web-based motor insurance calculator enabling quoting and policy issuance on mobile devices and PCs.
Replaced most data entry with document scanning (vehicle registration, driver’s license).

Sep 2012 - Mar 2015

2 years 7 months

Full Stack Lead Developer, Architect

BMW AG

Implemented an international sales platform for automobiles serving dealers, agents, and end customers with high multi-tenancy for multiple markets.
Covered the entire sales process from customer capture, vehicle configuration, quote generation, contract conclusion to financing, integrating with numerous existing systems using full JEE stack and internet UI.

Feb 2011 - Aug 2012

1 year 7 months

Full Stack Lead Developer, Architect

Deutsche Börse / DAB Bank AG

Delivered web-based systems for trading securities and portfolio management across various exchanges with high transaction volumes.
Supported wealth managers with customer acquisition tools and analytics. Maintained asynchrony and refactored legacy systems without downtime, providing browser and mobile (iOS, Android) UIs.

Sep 2010 - Feb 2011

6 months

Full Stack Lead Developer, Architect

SwissLife AG

Developed a system to collect, validate (rule-based, four-eyes principle), and forward security price data from multiple trading systems to back-end systems. All data is historized.
Provided a comprehensive web interface with dynamic runtime-configurable rules and interfaces.

Sep 2009 - Aug 2010

1 year

Full Stack Lead Developer, Architect

UniCredit Bank

Built a trade information broker for investment banking, aggregating trade data from global trading systems (RTD, ORC) and broker systems, normalizing and enriching data for downstream systems like Sophis risk calculation.

Mar 2006 - Aug 2009

3 years 6 months

Full Stack Developer

Verband Süddeutscher Apotheken GmbH

Implemented a system for complete prescription processing from capture and processing to billing and invoicing.

Nov 2003 - Feb 2006

2 years 4 months

Full Stack Developer

Deutsches Patent- und Markenamt

Developed a paperless office e-government system covering the entire file processing workflow and document management.

Jan 1988 - Dec 2003

16 years

Projects before 2003

Various Clients

Worked on multiple projects using legacy technologies; details available on request.

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (16 years), Insurance (6 years), Telecommunication (3.5 years), Pharmaceutical (3.5 years), Automotive (2.5 years), and Banking and Finance (2.5 years).

Information Technology

Insurance

Telecommunication

Pharmaceutical

Automotive

Banking and Finance

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (38 years), Product Development (11 years), Sales (2.5 years), Logistics (2 years), Business Intelligence (1.5 years), and Finance (1.5 years).

Information Technology

Product Development

Sales

Logistics

Business Intelligence

Finance

Skills

Programming Languages: Java, Kotlin, C#, Typescript, Javascript, Python, Groovy, Pl/sql
Markup Languages: Xml, Json, Yaml, Html, Css
Backend: Microservices; Spring Boot (Spring Security, Spring Data, Spring Integration, …); Quarkus; Eclipse Microprofile; Vert.x; Hibernate; Jpa; Panache; Typeorm; Rest/soap Web Services; Graphql; Oauth2; Oidc; Jwt; Openapi; Swagger; Kafka; Apache Avro; Protobuf; Rabbitmq; Redis; S3 Storage; Keycloak; Mapstruct; Flyway; Liquibase
Frontend: Angular; Reactjs; Vue.js; Ionic3; Reactive Programming (Rxjs, Ngrx, Redux); Micro Frontend (Web Components, Sap Luigi); Html; Css; Sass; Material Design; Bootstrap; Primeng; Websocket; Server-sent Events (Sse)
Cloud: Aws; Azure; Gcp; Confluent; Docker; Kubernetes; Helm; Elastic-stack (Kibana, Prometheus, Grafana); Opentelemetry; Jaeger; Terraform
Web And Application Servers: Nginx; Wildfly; Websphere; Tomcat; Node.js; Nest.js
Databases: Postgresql; Mongodb; Dynamodb; Apache Cassandra; Cosmos Db + Gremlin Api; Oracle; Mariadb; Mysql
Continuous Integration & Deployment: Gitlab Ci/cd; Jenkins; Bitbucket
Testing & Test Automation: Junit; Mockito; Easymock; Assertj; Rest Assured; Mockmvc; Testng; Jbehav (Bdd); Dbunit; Jest; Testing Library; Selenium; Jasmine; Protractor; Karma; Cypress
Build Systems: Maven; Gradle
Version Control: Git; Gitlab; Github
Workflow Management & Bpm: Camunda
Search Engine: Elasticsearch
Development Tools: Intellij; Microsoft Visual Studio; Eclipse
Uml Tools: Enterprise Architect; Together; Rational Rose; Magicdraw
Project Management: Jira; Confluence
Operating Systems: Linux; Windows; Macos
Quality Management: Sonarqube
Agile Methodologies: Scrum; Safe; Kanban
Other: Clean Code; Jira; Confluence

Languages

German

Advanced

Hungarian

Intermediate

Education

Nehézipari Műszaki Egyetem

PhD · Electrical Engineering / Computer Science · Miskolc, Hungary

Nehézipari Műszaki Egyetem

Diploma in Engineering · Electrical Engineering and Mechanical Engineering · Miskolc, Hungary

Profile

Created

June 2024

Last Update

January 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Bela based?

Bela is based in Munich, Germany.

What languages does Bela speak?

Bela speaks the following languages: German (Advanced), Hungarian (Intermediate).

How many years of experience does Bela have?

Bela has at least 38 years of experience. During this time, Bela has worked in at least 5 different roles and for 11 different companies. The average length of individual experience is 3 years and 2 months. Note that Bela may not have shared all experience and actually has more experience.

What roles would Bela be best suited for?

Based on recent experience, Bela would be well-suited for roles such as: Full Stack Lead Developer, Backend Architect, Full Stack Developer, Frontend Architect, Full Stack Lead Developer, Architect.

What is Bela's latest experience?

Bela's most recent position is Full Stack Lead Developer, Backend Architect at Telefonica (O2).

What companies has Bela worked for in recent years?

In recent years, Bela has worked for Telefonica (O2) and MediaMarktSaturn.

Which industries is Bela most experienced in?

Bela is most experienced in industries like Information Technology (IT), Insurance, and Telecommunication. Bela also has some experience in Pharmaceutical, Automotive, and Banking and Finance.

Which business areas is Bela most experienced in?

Bela is most experienced in business areas like Information Technology (IT), Product Development, and Sales. Bela also has some experience in Logistics, Business Intelligence, and Finance.

Which industries has Bela worked in recently?

Bela has recently worked in industries like Telecommunication and Retail.

Which business areas has Bela worked in recently?

Bela has recently worked in business areas like Information Technology (IT), Product Development, and Logistics.

What is Bela's education?

Bela holds a Doctorate in Electrical Engineering / Computer Science from Nehézipari Műszaki Egyetem and a Bachelor in Electrical Engineering and Mechanical Engineering from Nehézipari Műszaki Egyetem.

What is the availability of Bela?

Bela is immediately available for suitable projects.

What is the rate of Bela?

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