Konstantin P.
Architect / Developer / Full Stack
Experience
Architect / Developer / Full Stack
XUSD DAO
- Development of smart contracts and trading frontends for new crypto tokens (pegged to US dollar).
- Contracts developed for an Ethereum-based blockchain.
- Frontends with React including unit and end-to-end tests.
- Tools / technologies: smart contracts with Solidity, tests with Hardhat, frontend with React / TypeScript / Node / Vite / Viem.
Full Stack Developer
DB Netz AG / Infra.GO
- Development work on a video management platform for track videos.
- Platform for managing, delivering, and analyzing DB track video recordings.
- Recorded videos used for training purposes, vegetation analysis, infrastructure inspection, map display.
- Data warehouse for management to monitor recording and processing status.
- Scheduled ETL processes integrate data from various sources.
- Backend technologies: Java, Spring Boot, JPA, Feign, REST, Python, Postgres, Thymeleaf; frontend: Angular, TypeScript, Node.js, HTML, Less/Sass, video.js, Jasmine, Protractor, NPM; build and CI/CD: GitLab, Maven, Cucumber; AWS: Lambdas, S3, SNS, Step Functions, CloudFormation.
Frontend / JavaScript Developer
NDA Client
- Development of data extraction/scraping tools for websites.
- Development of user scripts for data collection and migration from non-cooperative websites.
- Used technology: plain JavaScript, Chrome browser, Tampermonkey APIs.
Backend Developer
DVAG Frankfurt
- Development of backend microservices, migrating Jenkins CI pipelines to GitHub Actions.
- Security audit of dependencies and business logic, code review, cloud-native application.
- Development and bug fixing of internal microservices (Spring Boot / OpenAPI / Feign) and migration of CI to GitHub Actions (35-40 services in total).
- Used technology: Maven, Spring Boot, Spring Cloud, OpenFeign, OpenAPI Generator, Keycloak, Swagger, Java, Kotlin, Groovy, ActiveMQ, Spock (integration tests), CI/CD with GitHub Actions, Docker, Kubernetes, deployment on Azure, MongoDB, Spring Data.
Full Stack Developer / Architect
Krola GmbH
- Rapid application prototyping for clients with code generators.
- Use of modern tools for quick architecture decisions.
- Used artifacts: JHipster generators, Spring Boot, TypeScript, Yeoman, NPM, Gradle, JPA, MongoDB, Keycloak / OAuth, Docker, React, Angular, Vue, microservices, Prometheus, Grafana, GraphQL.
Summary
IT experience since: 1989.
Technical focus areas: Java, microservice architectures, OAuth, Spring Boot, Docker, test automation with Selenium / Cucumber / Protractor, portal development, framework design, integration of open-source frameworks, build and configuration, automated source code generation using XDoclet or similar tools, content management, persistence, ORM, setting up test environments, mocking, ETL, J2EE, JSF, SVG, Mojarra, PrimeFaces, Java, mobile applications with Android, JavaScript, data visualization, OLAP, OOA, OOD, XML, JSON, reporting (Crystal / Aspose), CI, DevOps.
Industries: Bank, insurance, telecommunications, medical technology, logistics, civil engineering, education, aviation, security, shipping, trade, finance.
Miscellaneous: Active co-developer of various open-source projects (XDoclet 1&2, Struts1, XWork/WebWork (Struts 2), Pico/NanoContainer, JavaOCR, AndJect, JSON Serializer, own projects). Deep knowledge of related and used open-source projects, as well as a personal acquaintance with their developers.
Publications:
- Java Magazine 2.2003: "XDoclet EJB development made easy"
- Java Spectrum 5.2006: Article on dependency injection with PicoContainer
Speaker:
- JAX 2003, source code generation with XDoclet
Languages
Education
IFMO St. Petersburg
Diploma in Engineering · Systems Engineering · Saint Petersburg, Russian Federation
FH-Wiesbaden
Computer Science · Wiesbaden, Germany
IFMO St. Petersburg
Saint Petersburg, Russian Federation
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