Іван

IVAN MYSYK
Khmelnytskyi • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section)

Senior Java Developer

Senior Java Developer with over 5 years of experience in designing and delivering robust, scalable
backend solutions. Skilled in Spring Boot, Hibernate, and RESTful APIs, with hands-on expertise in
microservices architecture, API integrations, and data-driven systems across wealth management,
banking and B2B platforms. Experienced in Agile development, mentoring junior engineers, and
managing full-cycle delivery from BA specifications to production deployment. Recognized for
technical leadership, strong communication, and a proactive approach to achieving project goals
with high code quality and reliability.

SKILLS

Technologies: Java, Spring, SQL

Methodologies: Agile ​Methodologies, Sprint ​Planning, Code ​Reviews, Continious ​delivery, Technical ​
documentation
Frameworks and tools: Spring ​Boot, Spring ​Data, Spring ​Security, Spring ​MVC, Hibernate, MapStruct,
PostgreSQL, MySQL, MongoDB, Liquibase, JDBC, Oracle ​Database, Docker, Jenkins, OpenShift, REST ​API,
Swagger, Postman, JPA, JMS, Microservices, Prometheus, Grafana, WebSocket, Maven, Gradle, AWS ​
CloudWatch, AWS ​Cognito, AWS ​IAM, AWS ​S3, AWS ​SES, Azure ​Communication ​Services, Azure ​Blob ​Storage,
JUnit, Mockito, Testcontainers, SonarQube, Git, GitLab, GitHub

Languages: English ​-​​Upper ​Intermediate, Ukrainian ​-​​Native

WORK EXPERIENCE

Andersen • 07/2021 - 10/2025
Senior Java developer - NDA • Remote
The project's goal was the development of a wealth management application to help entrepreneurs,
business owners, and their families by providing tax and legal advice and services.

• Led backend development of a wealth management platform for high-net-worth clients, covering
international tax planning, succession management, and asset protection.
• Translated complex BA specifications into production-ready business logic, implementing roughly half
of the project’s core domain functionality.
• Mentored a junior Java developer, conducted code reviews, and improved team coding standards
and delivery quality.
• Built and maintained scalable microservices with Spring Boot, PostgreSQL, and Azure integrations,
ensuring high performance, test coverage, and code quality.
Senior Java developer - SeniorComps • Remote
SeniorComps is a B2B, crowdsourced data platform where senior housing industry professionals can
access property-level market data.

• Served as the one Java developer responsible for designing and implementing the complete
business logic for statistical calculations and data processing.
• Built and maintained REST APIs, third-party integrations, and database structures supporting a custom
B2B market data platform for the senior housing industry.
• Led the full application redesign, improving performance, maintainability, and user experience across
backend modules.
• Delivered a successful production release for the U.S. market, managing deployment, stability, and
post-launch monitoring on AWS.
Middle Java developer - PASHA Bank • Remote
At PASHA Bank, I designed and delivered a tax-planning microservice, building REST APIs integrated with
core banking systems and ensuring production readiness through testing and optimization.

• Designed and implemented a dedicated microservice for tax planning, integrating seamlessly with
existing banking systems.
• Developed internal REST APIs and ensured robust functionality through comprehensive unit and
integration testing.
• Collaborated with cross-functional teams in an Agile environment, contributing to feature delivery
and production stability.
• Successfully released the microservice to production, improving automation and efficiency in
financial data processing.
Middle Java Developer - InternCRM • Remote
Developed a CRM system for the internship department to automate enrolment workflows, track intern
progress, and analyze performance metrics and KPIs.

• Designed and developed a custom CRM system for managing internship applications, onboarding,
and performance tracking.
• Implemented integrations with multiple external APIs using various communication protocols,
ensuring reliable data synchronization.
• Fully redesigned and rebuilt the Telegram bot architecture for trainee testing, resolving 100% of critical
bugs and improving stability.
• Delivered production-ready APIs and maintained unit/integration test coverage to ensure quality and
smooth Agile delivery.

Junior Java Developer - NDA • Remote
A microservices-based integration platform comprising a document-signing service connected to
external systems and a statistics service aggregating fuel company data on driver discounts for retail
partners.

• Developed and maintained microservices integrating with multiple external APIs, including
document-signing and fuel-statistics systems.
• Designed a flexible service architecture capable of communicating with diverse API providers via REST,
SOAP, and custom authorization methods.
• Implemented and tested internal APIs, ensuring high reliability, scalability, and compliance with
business requirements.
Stocksoft • 02/2019 - 07/2021
Intern Java developer - Taxi Service (FAS)
A taxi management platform built on WebSocket and REST APIs, serving as a backend for driver and
client mobile applications, with intelligent ride distribution across taxi services based on proximity and
availability.

• Migrated a legacy Java EE application to Spring Boot, modernizing the architecture and improving
maintainability.
• Developed RESTful APIs and WebSocket-based communication for driver and client mobile
applications.
• Implemented new business features, integrated third-party geocoding services (Google, Yandex,
Visikom), and optimized ride distribution logic.

EDUCATION

Bachelor’s Degree in Software Engineering
Khmelnytsky National University • 09/2017 - 06/2021