# Яна Зелень

Яна Зелень is a remote worker on Himalayas, Java/Kotlin Developer at Neoflex, based in Russian Federation.

Source: https://himalayas.app/@0009321

```text
Backend engineer at Neoflex building a greenfield banking platform, from account lifecycle services to secure partner registry exchange.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Russian Federation |
| Authorized to work in | Russian Federation |
| Salary expectations | 36k+ EUR |
| Job categories | Backend Engineer, Java Developer |
| Skills | Backend Development, Kotlin, Java, Spring Boot, Kafka, Camunda BPM, REST APIs, Microservices, Document Management and Secure File Exchange, Event Driven Architecture, Avro, Outbox Pattern, PostgreSQL, Redis, Hibernate |

## About

```text
At Neoflex, I joined a greenfield platform for special-purpose mortgage accounts from the start and helped take it to production. I work across account opening, servicing, closing, and registry exchange with an external partner.

My main area of ownership is the registry exchange: I built the Camunda process for secure file intake, validation, registry status tracking, and generating payment registries and reports. I also designed Kafka events for external consumers and built registry streaming into the bank’s data platform.

I’ve worked on account lifecycle and money flows, document generation, and production support. I investigated stuck Camunda processes, implemented PII masking in logs, and closed defects found during acceptance and integration testing.

Before Neoflex, I worked at Flexify.IO on a multi-cloud storage and data migration SaaS product in an English-speaking team. I integrated Scaleway storage, rewrote the migration progress algorithm, and set up CI with Testcontainers integration tests.
```

## Experience

### Java/Kotlin Developer (current)

Neoflex. Jun 2024 - Present

```text
Developed a greenfield banking platform for special-purpose mortgage accounts, taking it from initial service layer to production with 12 releases in 2025. Owned registry exchange with external partners, built Camunda processes, Kafka contracts, and audit migration across 8 microservices.
```

Skills: Kotlin, Java-17, Spring-Boot-3, Camunda-BPM, Kafka, PostgreSQL, Redis, Hibernate, Kubernetes, OpenShift, Prometheus, Grafana, Kibana, REST-APIs, Avro, Outbox-Pattern, Liquibase, Flyway, Docker, CI-CD, S3, Azure-Blob-Storage, OIDC, PII-Masking, JUnit5, Mockito, Test-Containers

### Java Developer

Flexify.IO. Sep 2023 - Feb 2024

```text
Integrated a new storage provider (Scaleway) into a multi-cloud SaaS platform, verifying API behavior with direct tests. Rewrote the migration progress algorithm and set up CI with Testcontainers integration tests.
```

Skills: Java, Spring-Boot, Hibernate, MySQL, MariaDB, S3, Azure-Blob-Storage, JUnit5, Mockito, Test-Containers, Docker, Bitbucket-Pipelines

## Education

### Lobachevsky State University of Nizhny Novgorod

Professional Retraining, Data Analysis and Machine Learning. 2023 - 2023

```text
Completed a 9-month full-time professional retraining program in Data Analysis and Machine Learning.
```

### Maxima IT School

Course, Java Programming. 2023 - 2023

```text
Completed a Java Programming course in 2023.
```

### Nizhny Novgorod State Linguistics University

Bachelor of Arts, Advertising and Public Relations

```text
Earned a Bachelor of Arts in Advertising and Public Relations in 2022.
```

## Tech stack

- Kubernetes
- Flyway
- Liquibase
- MySQL
- PostgreSQL
- MariaDB
- Spring Boot
- Redis
- Java
- Kotlin
- Kafka
- Grafana
- Kibana
- Prometheus
- Hibernate
- Avro
- Mockito
- Docker
- SQL
- Testcontainers
- Apache Kafka
- REST APIs

To contact Яна, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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