Pasichnyk

BORYS PASICHNYK
.NET SOFTWARE ENGINEER | BACKEND | FULL-STACK
Kyiv | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)| Linkedin |Telegram

ABOUT ME
.NET Software Engineer with 5 years of experience building enterprise SaaS products and web
applications. Skilled in C#/.NET, REST APIs, microservices, asynchronous workflows, SQL and
NoSQL databases, third-party integrations, and Azure performance troubleshooting.
Experienced with AI agents, Chatwoot, Angular/AngularJS, Razor Pages, JavaScript, and
Creatio.

TECHNICAL SKILLS
BACKEND: .NET Core, Microservices, EF Core, Dapper, .NET Framework, ASP.NET Core (Web API,
MVC), ADO.NET, LINQ, Background jobs, RabbitMQ, NUnit and xUnit tests, DI, Serilog
DATABASES: PostgreSQL, MongoDB, MSSQL
FRONTEND: JavaScript, jQuery, AJAX, DataTables, Angular, HTML, Bootstrap, CSS, Razor Pages
PATTERNS AND PRACTICES: SOLID, DRY/KISS/YAGNI, CQRS, DDD
DEVOPS / CI/CD: Azure, Azure DevOps, Docker
SOURCE CONTROL TOOLS: SVN, Git, GitLab
OTHER: Agile, Scrum, Jira, Redmine, Azure Boards, FastReport, ClosedXML, LargeXlsx, Microsoft
Graph, SharePoint
Language: English - B2
AI tools: Codex, Cursor, Claude Code

EXPERIENCE
FULL-STACK .NET Working on the e-Docs and e-Docs.Sign enterprise products for
SOFTWARE ENGINEER IN document management, business process automation, and
electronic signatures. Main areas of responsibility include AI and
E-DOCS Chatwoot integrations, Azure, third-party services, and asynchronous
document processing.
Key contributions:
Domain: B2B SaaS
document Integrated Chatwoot with AI agents, including API callbacks,
management and chatbot configuration, message processing, and content-filter
workflow automation error handling.
Configured Chatwoot integration settings, database changes,
platform
caching, localization, and external API communication.
Duration: 1 year Investigated Azure performance issues using infrastructure
(08/2025 – Present) metrics, SQL analysis, and execution plans, and implemented
short- and long-term optimizations.
Developed and maintained integrations with 6 external
platforms, including Microsoft Graph, SharePoint, Vchasno,
M.E.Doc, Space API, and Viber Bot.
Key achievements:
Launched Chatwoot and an AI agent to automate user
request processing.
Resolved a long-standing Azure performance issue by
addressing connection limits and optimizing resource-intensive
database queries, accelerating critical queries by 3x.
Introduced AI automation for project support, code review,
and system stability monitoring.

MIDDLE FULL-STACK .NET Worked in a product company on a B2B SaaS billing platform for
SOFTWARE ENGINEER IN electricity and gas management. The platform was built with a
microservices architecture using .NET Web API, PostgreSQL, MongoDB,
EXTRACODE RabbitMQ. Developed and maintained services, performed
refactoring, and implemented client database imports.

Key contributions:

Domain: B2B SaaS Built and improved microservices using .NET Web API,
billing platform PostgreSQL, MongoDB, RabbitMQ
Implemented client database import and data processing
Duration: 2 years 10 mechanisms
month Configured dynamic document generation (FastReport,
(10/2022 – 07/2025) ClosedXML, LargeXlsx)
Developed web pages with Razor Pages, AJAX, jQuery,
DataTables and Bootstrap.
Enhanced existing services through refactoring and feature
improvements
Implemented and optimized DB queries;
Provided partial mentorship for junior developers, supporting
onboarding and code reviews.
Integrated Chatwoot with an internal AI service for automated
customer support.

Key achievements:
Contributed to a B2B SaaS product used by 10+ enterprise
clients in the energy sector.
Improved service performance, reducing response times by
up to 25% via refactoring.
Optimized large-scale data processing for reporting,
accelerating report generation 5x.
Implemented client database import tools handling 10k+
records per import.
Helped mentor junior developers by sharing knowledge and
reviewing code.

JUNIOR FULL-STACK .NET Over a year of experience with CRM Creatio, implementing and
SOFTWARE ENGINEER IN maintaining 6 enterprise-level projects in FMCG, Agro, and Data
Management. Developed marketplace solutions and a CRM
SalesUp interaction utility. Worked with .NET, MS SQL, PostgreSQL, JavaScript,
and Creatio frameworks. Took part in large-scale implementations,
Domain: FMCG, Agro integrations, and CRM customization tailored to client needs.
Duration: 1 year 1 Key contributions:
month Implemented and supported CRM projects across FMCG,
(9/2021 - 10/2022) Agro, and Data Management domains.
Developed marketplace solutions and a CRM utility tool.
Customized and extended Creatio platform using .NET,
JavaScript, MS SQL, PostgreSQL.
Automated data import/export processes and optimized
CRM workflows.
Key achievements:
Delivered 6 successful CRM implementations.
Developed a marketplace solution for employee vacation
management, streamlining approval processes and
reducing HR workload.
Developed an automatic localization tool, reducing the
system adaptation time for multiple languages by 60%.

EDUCATION
Bachelor's and Master's degree Kyiv National University of Construction and Architecture

2016 - 2022, Kyiv, Courses: Computer Science

CERTIFICATIONS
Creatio advanced developer 2022
CERTIFICATES The Language Village (2019) Intermediate English level