27.07.2026 aktualisiert

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Lead Java / AI Developer

Hamburg, Deutschland
Hamburg +500 km
M.Sc. in Computer Science
Hamburg, Deutschland
Hamburg +500 km
M.Sc. in Computer Science

Profilanlagen

Drahan - resume.pdf

Über mich

Developer / lead with 15+ experience in fintech, banking and large-scale backends. Especially skilled in Java, databases and enterprise architecture. Now riding the hype train of enterprise AI/LLM integration. Comfortable in high-pressure environments, solving tech and people challenges.

Skills

JavaApache ActivemqAPIsKünstliche IntelligenzApache AirflowAmazon Web ServicesMicrosoft AzureContinuous IntegrationHibernateInfrastrukturJUnitPythonPostgreSQLApache MavenMySQLMVCRabbitMQChatbotsLarge Language ModelsSpring BootGitlab-CiKubernetesSicherheitsbestimmungenJenkins
Core: Java (Spring Boot/MVC/Data/Security/AI), Hibernate, JUnit, MySQL, PostgreSQL
AI/LLM: pgvector, LangChain, just enough Python, OpenAI API, RAG pipelines, Spring AI
Infra / CI/CD: Kubernetes, RabbitMQ, ActiveMQ, AWS, Azure, GitLab CI/CD, Jenkins, Maven
Orchestration / ops: Airflow, Camunda BPM, Redash, Retool

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2023

Sprachen

DeutschgutEnglischverhandlungssicherRussischMutterspracheUkrainischMuttersprache

Projekthistorie

Engineering Lead

Raisin GmbH

Banken und Finanzdienstleistungen

500-1000 Mitarbeiter

- Led the Agile team responsible for a white-label Open Banking platform for a global bank. Managed end-to-end cycle: from development and testing to deployment and ongoing maintenance.
- Company’s success led to ~4x growth of monthly volume processed by the platform. I focused the team’s effort to ensure that the system kept up: analyzing and eliminating bottlenecks, solving stability issues, and improving monitoring.
- As usual, prioritized people, firmly believing that this is the foundation of a motivated and effective team. Aligned tasks and responsibilities with individual development goals and the company's needs. When it comes to making hard decisions in the company's best interest, I ensured the process was conducted respectfully and had minimal impact on team morale.

Senior Software Developer / Team Lead

Deposit Solutions

Banken und Finanzdienstleistungen

250-500 Mitarbeiter

- Led a ~15-person team responsible for all non-project improvements and maintenance of the Open Banking platform. Organized the workflows to ensure product quality, performance and security met the high expectations of the fintech industry.
- Managed team dynamics, mediated conflicts, and delegated responsibilities to foster personal growth and effective teamwork. Despite the company going through a complex transformation phase - which predictably resulted in low morale - I successfully built an atmosphere of trust and openness, promoting diverse opinions and accepting mistakes as part of the learning process. This approach ensured high team productivity, employee retention and product quality.
- Implemented a department-wide framework for incident management and root cause analysis. This led to a significant decrease in recurring incidents, enhancing the overall productivity of the development teams by reducing context-switching and time spent on incident resolution.

Senior Software Developer

Deposit Solutions

Banken und Finanzdienstleistungen

250-500 Mitarbeiter

- Worked on a consumer investment platform with a focus on making it robust and scalable to handle
high volumes of traffic and transactions.
- Used Java 6/8, MySQL, Spring MVC, Flyway, Freemarker, JPA, Hibernate, Jenkins, GitLab, Ansible,
Docker, RESTful Web Services, IntelliJ, Maven, Redash.

Client/Server Developer

Goodgame Studios

Internet und Informationstechnologie

500-1000 Mitarbeiter

- Implemented AI for a real-time strategy game (Unity, C#).
- Improved rendering performance of "Shadow Kings" ~200%, allowing it to run on old devices and
thus increasing the player base (AIR, ActionScript 3.0, OpenGL).
- Developed game backend including authentication, cross-platform user progress management and
personalized monetisation (Java 8, Spring, MySQL, Hibernate, Protobuf).

Flash Developer

Chicco

Sonstiges

1000-5000 Mitarbeiter

- Implemented complex fully-functional online multiplayer Flash game with monetization and social
features (ActionScript 3.0, Flash, JavaScript, PostgreSQL, HTML, CSS)
- Developed a self-service kiosk shell for the company's retail shops all over Ukraine (ActionScript
3.0, Flash, AIR).

IT Monitoring Engineer

Platinum Bank

Banken und Finanzdienstleistungen

* Integrated Microsoft SCOM into the bank's infrastructure, ensured stable monitoring - this
allowed reducing the amount of incidents and their resolution time.
* Developed custom scripts that checked, measured and logged the status of Linux / Windows
servers, DBs, network hardware, company's banking frontend and backend.

IT Support Engineer, System Administrator

Rodovid Bank, Imex Bank

Banken und Finanzdienstleistungen

- Gained experience of working with ATMs, POS terminals and other banking hardware / software.
- Got hands-on experience of online payment systems and enterprise information security.

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