Роман

Roman S, Software Engineer
Details Profile

Address  Software Engineer with experience in backend development for fintech, HR, and data security
Ukraine platforms. Proficient in Python (Django, DRF, FastAPI, Flask, aiohttp), Java, ColdFusion, and
JavaScript. Skilled in database design and optimization (PostgreSQL, MySQL, MS SQL Server),
API development, cloud deployment (AWS), and containerization (Docker). Experienced in
English –Upper performance tuning, code refactoring, and building scalable systems across multiple domains.
Intermediate • Responsibilities: Developing backend services, designing databases, deploying to cloud,
(В2) optimizing performance, and refactoring legacy code.
Ukrainian – Native • Methodologies: Agile (assumed).
Russian - Fluent • Programming: Python, Java, ColdFusion, JavaScript.
• Technologies: Django, DRF, FastAPI, Flask, aiohttp, Celery, Airflow, Scrapy, Pandas, scikit-learn,
SQLAlchemy, ASP.NET Core, ASP.NET Web API, gRPC, EntityFramework.
• Databases: PostgreSQL, MySQL, MS SQL Server, Snowflake, Redshift, MongoDB.
Employment history
 Software Developer, NDA Project (Fintech, Automated Trading), Ukraine (Remote assumed), October
2023 - Present
Technical Development and Implementation:
• Software development.
• Public API development.
• AWS deployment.
• Database design.
Key Achievements:
• Delivered reliable backend for automated trading platform.
Tech Stack: Python, Docker, Docker Compose, RabbitMQ, Redis, PostgreSQL, Celery, Django, DRF, Loki,
Grafana, Airflow.

 Software Developer, JetSoftPro (Advanced HR Platform), Ukraine, February 2022 - September 2023
Technical Development and Implementation:
• Software development.
• Public API development.
• DB remastering.
• Code refactoring.
• Database design.
Key Achievements:
• Improved advanced HR platform for employee-candidate matching.
Tech Stack: Java, ColdFusion, ColdBox, MS SQL Server, JavaScript.

 Software Developer, Sympatic (Data Security Platform), Ukraine, September 2021 - February 2022
Technical Development and Implementation:
• Software development.
• Public API development.
• AWS deployment.
• Database design.
Key Achievements:
• Built platform for secure data exchange between companies.
Tech Stack: Python, Django, DRF, Celery, RabbitMQ, Docker, AWS.

 Software Developer, NDA Project (Gas/Oil Industry), Ukraine, May 2021 - August 2021
Technical Development and Implementation:
• Software development.
• Bug fixing.
• WPF UI development.
• Implementation of new signal detector format support.
Key Achievements:
• Delivered desktop/hardware tool for ground vibration detection.
Tech Stack: C#, C++, .Net Interop, WPF.
 Employment history
 Freelance Software Developer (Self-employed), Ukraine, Spring 2018 - May 2021
Technical Development and Implementation:
• Software development.
• Bug fixing.
• Database design.
• ETL/ELT process implementation.
• DAG realization.
• Data visualization.
Key Achievements:
• Completed multiple short-term freelance projects.
Tech Stack: Java, Spring Boot, Python 3, AsyncIO, AIOhttp, Django, Flask, ColdFusion, C#, gRPC, Asp.Net Core,
Asp.Net Web Api, RabbitMQ, Alembic, SQLAlchemy, PostgreSQL, Docker, Docker Compose, AWS, MS Azure,
Pandas, Redshift, Snowflake, MS SQL Server, PostgreSQL, MySQL, Jupyter, Julia lang (0.4), Apache Airflow,
Celery, Angular 7, AmCharts, ODBC.

 Software Developer, MapR (Event-Streaming Platform), Ukraine, Autumn 2017 - Spring 2018
Technical Development and Implementation:
• Updated and implemented drivers in Python and C#.
• Integrated and fixed C code (based on librdkafka).
• Code refactoring.
Key Achievements:
• Contributed to corporate event-streaming platform similar to Apache Kafka Streams.
Tech Stack: C, Python 2 & 3, C#, .Net Framework, .Net Core.

 Software Developer, Evolute (Financial Tool), Ukraine, Winter 2013 - March 2016
Technical Development and Implementation:
• Custodian data integration.
• Reporting implementation.
• Message bus integration.
• Data transmission.
• Statistical and risk model processing.
• Security implementation.
• Data transformation.
Key Achievements:
Delivered financial tool for investment portfolio management and optimization.
Tech Stack: Python, Twisted, AMQP, C++/Boost-Python, Qpid, MS Bond, Tex, Jinja2, suds, celery, C#, WCF,
EntityFramework, XSLT, MS SQL, Riak.

 Freelance Software Developer (Self-employed), Ukraine, Spring 2013 - Autumn 2013
Technical Development and Implementation:
• Software development.
• Bug fixing.
• UI design and implementation on ExtJS.
• Database design.
Key Achievements:
• Completed short-term freelance projects.
Tech Stack: Django, Twisted, Spring, Yii, Python, Java, PHP, ColdFusion, MySQL, PostgreSQL, MS SQL, Hibernate,
ExtJS, jQuery, RabbitMQ, ZeroMQ, Solr, Scrapy.

 Software Developer, SmartDrive (Smart Dashcams), Ukraine, Summer 2013 - Autumn 2013
Technical Development and Implementation:
• Software development.
• Bug fixing.
• ffmpeg integration.
• Silverlight portal UI implementation.
• WCF services implementation.
• DataCubes integration.
Key Achievements:
• Delivered server software for smart dashcams for special transport.
Tech Stack: Asp.Net, Silverlight, MS Sql Server, MS SQL Server Data Cubes, FFMpeg, C++, WinAPI, DirectShow,
WCF.
 Employment history
 Software Developer, AdminDW (Admin Tool), Ukraine, Spring 2013 - Summer 2013
Technical Development and Implementation:
• Software development.
• Bug fixing.
• WPF implementation with MVVM pattern.
• Migration from LINQ2SQL to EntityFramework.
Key Achievements:
• Delivered desktop administrative tool for server services.
Tech Stack: WPF, Linq2SQL, MS SQL Server, C#, .Net 4, MVVM.

 Software Developer, Govis (E-Government), Ukraine, Spring 2012 - Spring 2013
Technical Development and Implementation:
• Software development.
• Bug fixing.
• Third-party component integration.
• Frontend development on JS.
• Security and access strategy implementation.
Key Achievements:
• Contributed to Swiss e-government system.
Tech Stack: ColdFusion, ColdSpring, Hibernate, Java, Apache Tomcat servlets, Apache, PostgreSQL, MongoDB,
ExtJS, YUI, OAuth, SwissID.

 Junior Software Developer, Libreeez (Document Management), Ukraine, Spring 2011 - Spring 2012
Technical Development and Implementation:
• Software development.
• Bug fixing.
• Refactoring.
Key Achievements:
• Contributed to smart document storage and search system.
Tech Stack: Asp.Net, MySQL, Amazon S3, Nhibernate, WWF, WCF, C#, Solr, WPF, MSMQ.

 Junior Software Developer, Cruisee (Tour Operator), Ukraine, November 2010 - Spring 2011
Technical Development and Implementation:
• Software development.
• Bug fixing.
Key Achievements:
• Delivered tour operator website.
Tech Stack: ASP.NET, MS SQL, jQuery, EntityFramework, C#, NUnit

Education

 Master's Degree in Chemistry, Ivan Franko National University of Lviv, Ukraine

Certifications

 Microsoft Certified Professional, Microsoft, 2012 (Transcript ID: 986133, Access Code: romanskibitskiy)
 TS: Windows Communication Foundation Development with Microsoft .NET Framework 4, Microsoft
(Exam ID 513), 2011
 TS: Windows Applications Development with Microsoft .NET Framework 4, Microsoft (Exam ID 511), 2011

Additional Information

• Docker/Docker Compose, used for containerization.
• Git/SVN/Mercurial, used for version control.
• Problem Solving, applied in database optimization and system design.