Daniel Stoyanov — Software Developer

Daniel
Stoyanov

Software Developer

Back-end developer with 5 years of experience building reliable, scalable systems. I care about clean, well-tested code and take SOLID principles seriously - good structure makes hard problems easier to solve. I adapt quickly to new technologies and domains, work well in a team, and take full ownership of what I build.

Plovdiv, Bulgaria

SOFTWARE SKILLS

Java (11 – 22)

Spring Ecosystem

SQL Databases

Testing (JUnit / Mockito)

Docker / Kubernetes

Messaging (Pulsar / RabbitMQ)

Technologies

MultithreadingSpring Data JDBCSpring SecuritySpring SchedulerActuatorFlywayJPA / HibernateJDBCREST APISMTP / SocketsEvent-drivenLombokMapStructJAXBGSONTypeScriptVaadinMySQLPostgreSQLOracleH2JUnit 4 / JUnit 5MockitoSpring TestPlaywrightDocker ComposeMicroservicesLog4j / Slf4jTomcatMaven / GradleGIT / GitHubGitHub ActionsAWSDigital OceanSwagger / OpenAPI

LANGUAGES

EXPERIENCE

2022
NOW

PHARMACEUTICAL INDUSTRY

Software Developer · Manufacturing Execution System

Core back-end of a strictly regulated MES used by major pharmaceutical companies. Modernized a legacy monolith by integrating it with cloud-native Spring Boot microservices. Built automated warehouse supply via REST, secure "Exceptional Change" workflows, and migrated legacy serialization to an idempotent RabbitMQ event-driven architecture.

Java 21 · Spring Boot · REST APIs · Kubernetes · Docker · RabbitMQ · PostgreSQL · Oracle · JUnit · Playwright · TypeScript

2021
2022

SOFTWARE SERVICES INDUSTRY

Software Developer · ERP System

Developed an ERP system managing financial, operational, HR, accounting, and reporting processes. Implemented features for time-offs, emails, inventory, timesheets, events, and announcements. Full unit test coverage across all business logic.

Java 21–22 · Spring Boot · Spring Data · Spring Security · MySQL · Flyway · Vaadin · Docker · GitHub Actions

EDUCATION

Bachelor's in Software Development,

Software University, Sofia · 2020 – 2021

Professional High School of Construction,

Architecture & Geodesy "Arch. Kamen Petkov", Plovdiv · 2014 – 2019

WHAT I BUILD

Backend API Design
REST API Endpoints
Microservices Architecture
Event-driven Systems
Database Design & Optimization
Testing & Quality Assurance

PRACTICES

Clean Code · SOLID Principles
Scrum · Kanban · Jira
GitHub Actions · CI/CD
Swagger · OpenAPI

HOBBIES & INTERESTS

Music

Tech

Self-growth

Politics