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DENIS MYROSHNYKOV
.NET Backend Developer
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PROFILE
.NET Backend Developer with 6 years of experience building backend services, REST APIs and business
workflows. Strong in C#/.NET, SQL Server and event-driven processing, with experience in integrations,
database optimization and legacy modernization across fintech, insurance, and risk & compliance systems.

TECHNICAL SKILLS
Backend: C#, .NET / .NET Core, ASP.NET Core Web API, ASP.NET MVC, REST APIs, LINQ
Data Access & Databases: SQL Server, Entity Framework, ADO.NET, query optimization, indexing
Messaging & Reliability: RabbitMQ, Hangfire, event-driven workflows, idempotency, retry policies, distributed
locking, unit testing
Tools & Delivery: Git, Azure DevOps, NuGet, Docker, Kubernetes / Argo CD diagnostics
Frontend: Vue.js, Angular, JavaScript, HTML/CSS
AI Engineering: RAG knowledge systems, AI-assisted code review, GitHub Copilot, Claude Code, Codex

WORK EXPERIENCE
.NET Backend Developer | Fintech Company
May 2025 to Present
• Design backend services and complex business workflows for a lending platform, enabling new processes
and internal operations across a large monolith and 70+ microservices.
• Implement REST and RabbitMQ integrations between services and external providers, using shared NuGet
contracts and idempotent consumers to coordinate payment processing and transaction finalization.
• Replace uncontrolled retries and fragile transaction handling with bounded Hangfire workflows, batching
and distributed locking; add unit tests covering production failure scenarios.
• Contribute to an internal RAG-based knowledge base and an AI-powered code review bot.
Full Stack Developer | Siscon, Danish company
June 2022 to May 2025
• Delivered backend features and reporting for an enterprise risk and compliance platform with C#/.NET and
ADO.NET, automating data validation and manual reporting steps.
• Optimized complex SQL queries and eliminated redundant database calls to improve reporting
performance.
• Decoupled selected ASP.NET WebForms functionality through Vue.js interfaces and reusable REST APIs,
reducing dependencies on legacy pages.
• Translated stakeholder requirements into technical solutions and participated in code reviews and delivery
planning with an English-speaking team.
Full Stack Developer | InCore
December 2020 to June 2022
• Implemented backend business rules and workflow state transitions for insurance applications in C#/.NET,
enforcing server-side validation to prevent inconsistent records.
• Replaced manual data transfers with REST integrations between business applications and external
systems.
• Refined Entity Framework queries and pagination to reduce unnecessary database reads and improve
application responsiveness.

EDUCATION
National Aviation University - Bachelor of Computer Science