Open to opportunities

Mark Vasilyev

@markvasilyev

Message

I build Java and Kotlin backend services for lending, inventory, and business operations.

Russian Federation

Message

What I'm looking for

I'm open to relocation and business trips, and I’m looking to build backend products where I can deliver reliable Java and Kotlin services, solve production challenges, and work with modern microservice technologies.

At T-Bank, I build microservices for SME lending products using Java, Kotlin, Spring Boot, Camunda, Kafka, and OpenAPI. I delivered backend components for an auto-secured credit line that reached approximately 300 loan disbursements monthly and a portfolio above RUB 1.3 billion in its first year.

I've migrated services to Spring Boot 3 and Kafka as a Service, optimized PostgreSQL queries, introduced tracing, and built Prometheus and Grafana dashboards for business and support teams. I also integrate internal banking systems, generate customer documents, and resolve production incidents during on-call rotations.

Previously, I developed CRM, inventory, procurement, and warehouse-management systems at INFOTECH and DataSpectra, designing data models, REST APIs, integrations, security, and automated tests.

Experience

Work history, roles, and key accomplishments

Current

Java Developer

Current

T-Bank

Aug 2023 - Present (3 years)

Developed microservices for SME lending products using Java, Kotlin, Spring Boot, Camunda, Kafka, and REST APIs. Delivered an auto-secured credit line to production, achieving ~300 loan disbursements per month and a portfolio above RUB 1.3 billion in the first year.

Java Kotlin Spring Boot Kafka Avro REST APIs OpenAPI Camunda PostgreSQL Hibernate JPA Prometheus Grafana Docker Kubernetes Maven Gradle Git CI CD

Java Developer

INFOTECH

Sep 2021 - Apr 2023 (1 year 7 months)

Developed a web application for an auto service business, including CRM, employee portals, spare parts inventory, and procurement planning. Designed the PostgreSQL database and Hibernate data model, built REST APIs, and configured security with Spring Security.

Java Spring Boot Spring Security REST APIs PostgreSQL Hibernate Junit Mockito Maven Gitlab

Java Developer

DataSpectra

Feb 2020 - Jul 2021 (1 year 5 months)

Developed a warehouse management system for inventory and supply operations. Built REST APIs and business logic, implemented Hibernate data model with Spring Data, and optimized MySQL queries.