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Andrei Cusnir

@andreicusnir

.NET backend engineer at Grid Dynamics who modernized payment services and built functionality across six microservices.

Moldova

Message

What I'm looking for

I'm open to remote worldwide opportunities as a .NET Backend Engineer, C# Backend Engineer, or Full-Stack .NET Engineer. I'm also open to local or hybrid roles in Moldova.

At Grid Dynamics, I developed and modernized backend services for fintech and payment platforms, including payment and credit workflows across .NET microservices. I built backend functionality across about six microservices and 15 REST API endpoints, and implemented three Solace-based asynchronous integration flows.

Previously, I contributed to a financial data platform at Allied Testing and a U.S. insurance platform at Symfa, working on backend features, legacy systems, and production support. I focus on reliable backend services and step-by-step modernization, and use AI-assisted tools such as Codex, Claude, and Copilot Pro in code review and refactoring.

Experience

Work history, roles, and key accomplishments

Software Engineer — .NET Backend / Microservices

Grid Dynamics

Jul 2024 - Jun 2026 (1 year 11 months)

Developed and modernized backend services for fintech and payment platforms, working on distributed .NET systems, REST APIs, service migration, asynchronous integrations, and production troubleshooting.

Key contributions:
● Built backend functionality across ~6 .NET microservices and ~15 REST API endpoints for payment and credit workflows.
● Implemented 3 Solace-based async integration flows for

Software Engineer — .NET / Insurance Platform

Symfa

Sep 2023 - Jul 2024 (10 months)

Worked on a U.S. property & casualty insurance platform, supporting a production legacy system built with VB.NET, WebForms, .NET, and Microsoft SQL Server.

Key contributions:
● Delivered 10+ insurance features and change requests for a business-critical P&C insurance platform.
● Extended legacy VB.NET and WebForms functionality with .NET features while preserving existing behavior and compatibili

Full-Stack .NET Developer — Financial Data Platform.

Allied Testing

Apr 2021 - Sep 2023 (2 years 5 months)

Worked as a Full-Stack .NET Developer on a U.S. financial data and news platform covering primary and secondary syndicated loan markets. Contributed to backend functionality, WebForms/JavaScript frontend updates, deployment processes, and production support for a data-heavy financial product.

Key contributions:
● Delivered 5+ major backend and full-stack features for a financial data platform use

Full Stack .NET Developer

CODWER

Feb 2020 - Apr 2021 (1 year 2 months)

Developing and maintaining backend services for a fintech platform. Collaborating with cross-functional teams to implement business logic and integrate financial services.
● Designing and implementing RESTful APIs using ASP.NET Core.
● Implementing Dependency Injection (DI) to enhance maintainability and testability.

Software Engineer Intern

Endava

Sep 2019 - Dec 2019 (3 months)

Completed a hands-on internship focused on backend development and software engineering fundamentals. Gained practical experience in object-oriented programming and team collaboration.
● Learned and applied OOP concepts and SOLID principles in daily development tasks.
● Participated in code reviews, sprint planning, and team discussions following Agile practices.

Quality Assurance Specialist

DevelopmentAid

Dec 2018 - Sep 2019 (9 months)

Worked as a QA Specialist, gaining hands-on experience in manual and automated testing, version control, and cross-team collaboration. Focused on ensuring software quality through well-structured test cases and continuous improvement practices.
● Learned and applied software testing principles and testing methodologies
● Gained initial experience in test automation