18.09.2026 aktualisiert
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100 % verfügbarContract Enterprise Architect | Java - Cloud (AWS, Openshift) - Data - ML/AI | Freelance / B2B
Rudná, Tschechische Republik
Nur Remote
Master's degree, AWS, Oracle and Teradata CertifiedÜber mich
B2B/Contract Enterprise Engineer/Architect designing high-throughput cloud topologies. AI engineering, adoption, methodology. VAT registered (compliant for cross-border B2B contracts). Microservices, Event-Driven Architecture (Kafka), Cloud Migration (AWS/Openshift), Distributed Systems, ML/AI.
Skills
KeycloakOIDCIAMJavaSpring SecurityAPIsKünstliche IntelligenzBig DataSaasCloud ComputingCloud-EngineeringDaasData ArchitectureDistributed ComputingSysteme zur Verwaltung von Datenströmen
AI Adoption & Agentic Engineering
Consulting and delivery for teams adopting AI coding agents on regulated codebases: spec-driven, eval-driven workflows, an independent verification instrument gating change on evidence, and workshops teaching agentic and context engineering to engineers and leadership.
Distributed Microservices Architecture
Design and implementation of scalable distributed microservices systems based on Java, Spring Boot, Micronaut, Kafka messaging, Kafka Streams, gRPC and related frameworks. Extensive experience with event-driven architecture and high-throughput cloud topologies across fintech, energy, telco and biotech sectors.
Cloud Platforms & DevOps
Hands-on expertise with AWS (S3, Lambda, Datasync, API Gateway) and Openshift/Kubernetes environments including Gitlab CI, Docker, Gradle, Maven, Prometheus/Grafana, Observability/Open Telemetry (Dynatrace, Instana), Metrics (Micrometer) and ELK stack. AWS Certified Cloud Practitioner (2025).
ML/AI Engineering & Data Architecture
End-to-end ML/AI enabling solutions including optimizing pre-trained models with ONNX, deploying to vLLM/Triton, enterprise integrations with LangChain4j, feature stores maintenance, data versioning, orchestration and model lifecycle management. Deep learning to RDBMS interface development using Java, DJL and SQL UDFs.
SQL & NoSQL Databases
Broad experience with relational databases (Postgres, MSSQL, Oracle, MySQL, Teradata) and NoSQL/time-series databases. Database administration, PL/SQL development, ETL tools and SQL interfaces for data flow between planning and operational databases.
Apache Kafka & Streaming
Platform development and administration with Confluent Kafka, Apache Kafka, Kafka Streams and State Store. Design and implementation of scalable Kafka topics archival microservices and event-driven data pipelines.
Big Data & Hadoop Ecosystem
Administration and development on Hortonworks HDP Clusters, Apache Spark2, Apache NiFi, YARN, SolR, Anaconda, JupyterHub, Teradata Kylo, Apache Ranger, Apache Knox and Ceph.
Frontend Development
Principal Frontend Developer experience with TypeScript, Angular, JavaScript, React and asynchronous data processing. Full-stack development including Spring Boot, Spring Security, JPA, Hibernate and REST APIs.
Security & Identity Management
Design and implementation of enterprise-size Single Sign On and registration/authentication/authorization platforms based on Keycloak, OAuth2 and OIDC. Significant improvement of authorization security in highly secured Keycloak realms.
Python & Data Science
Advanced Analytics engineering with Python, Jupyter/Datalab, Python Pandas, Python Sci-kit Learn, OOP Design Patterns and integration with AWS services. Experience in pharma and banking sectors.
ANTLR & Language Processing
Development of sql2sql translator applications using ANTLR v4 and Advanced SQL, enabling cross-database query translation and migration tooling.
Erfahrung
Berufserfahrungmehr als 10 Jahre
Freelancer seit2024
Sprachen
EnglishverhandlungssicherPolishMutterspracheCzechMuttersprache
Projekthistorie
Designing and implementing scalable distributed microservices system based on Java, Spring, Kafka messaging, Object Store, Postgres and Timeseries DB. Increased the speed of data pipelines up to 50x while reducing data storage volume by the same ratio. Working in highly regulated private cloud environment with Openshift, Gitlab CI, Kubernetes, Docker, Gradle & Maven, Prometheus/Grafana, Observability/Open Telemetry (Dynatrace, Instana), Metrics (Micrometer) and ELK stack. Delivered contract projects: SSO/authentication/authorization platform based on Keycloak, OAuth2, OIDC; time series validation and archival microservices with Micronaut, Kafka Streams, State Store and MSSQL; EnergySim legacy timeseries data simulator and payload generator. Also delivered an Agentic Development pilot: built Touchstone, an independent verification instrument that let AI coding agents carry a high-risk framework and runtime migration while every step stayed attributable and auditable, and taught the underlying spec-driven, eval-driven method to engineering and leadership teams.
Multiple projects including: Deep learning to database interface (Java 8, Java 11, DJL, SQL, UDF, GIT, Maven, Gradle); Teradata Modelops BYOM ML models lifecycle management; Database Job Scheduling Platform full-stack development (SQL, Java EE, Spring Boot, Spring Security, JPA, Hibernate, REST, Angular, GIT, JHipster); Principal Frontend Developer (Typescript, Angular, Javascript, SQL, GIT, Maven); sql2sql translator (Java 17, ANTLR v4, Advanced SQL, GIT, Maven); Advanced Analytics Engineer/Consultant 2020-2022 (Python, Jupyter/Datalab, AWS, Amazon S3, Amazon Datasync, Amazon Lambda Functions, REST, Amazon API Gateway, GIT, Azure Devops, Okta, Kerberos, OOP Design Patterns, Python Pandas, Python Sci-kit Learn); Platform Developer & Product Owner 2018-2020 (Hortonworks HDP Clusters, Java, Python, Ansible, Confluent Kafka, Kerberos, SSL/TLS, JDBC, Apache Kafka, GIT, Apache Ranger, Apache Knox, Apache Spark2, Kubernetes, Ceph, Docker); Hadoop Administrator 2017-2018 (Hortonworks HDP Cluster, Java, Python, YARN, Apache Spark2, SolR, Anaconda, JupyterHub, Teradata Kylo, Apache NiFi); Think Big Analytics (IT - Big Data) - Data Engineer 2017 (Think Big Kylo, Apache NiFi, Java EE, Spring Boot, ActiveMQ, Elasticsearch, MySQL, Docker, Docker Swarm).
Inhouse solutions in Java EE, SQL, PL/SQL, GWT, Spring, Maps OpenLayers and Oracle DB for maximizing utilization of RF network planning software. Distributed datasets design and implementation using Spark and Hadoop. Online interactive network coverage map platform design, development, maintenance and upgrades. Oracle database administration for RF network planning software. Synchronization and network administration platforms for RF networks. PL/SQL consistency, security and geodata tools, ETL tools and SQL interfaces for data flow between planning and operational databases.