.NET

remote

We’re looking for a Senior .NET/React Engineer to join our team and help rebuild and scale a next-generation investment platform designed for institutional investors and funds.

This is a long-term project for a US-based early-stage fintech product company focused on optimizing document flows, portfolio insights, and compliance in the private investment space. You’ll play a key role in transforming a prototype MVP into a production-grade, scalable SaaS platform, working closely with a distributed product team.

What you’ll do:

Take ownership of modernizing a legacy portal by rewriting it using React and .NET 9
Implement portal automation features, including secure credential handling, CAPTCHA and MFA bypass, and robust scraping solutions
Refactor and design new RESTful APIs to replace monolithic logic
Collaborate with backend developers, designers, and stakeholders to improve fragmented document workflows and support complex compliance scenarios
Participate in architectural decisions related to frontend structure (microfrontends are a plus)
Engage in Agile-like development processes with daily standups and evening syncs (calls typically happen around 18:00–19:00 Kyiv time)
Ensure the delivery of maintainable, testable, and scalable code

What we’re looking for:

4+ years of experience with .NET (preferably .NET 8 or 9) and C#
Strong skills in frontend development using React (or Blazor/Razor with willingness to work with React)
Solid understanding of RESTful API design and clean architecture
Experience working with PostgreSQL and ORM libraries like Entity Framework or Dapper
Familiarity with authentication and security best practices (JWT, ASP.NET Identity)
Ability to work independently and drive solutions from concept to implementation
Upper-Intermediate English or higher for direct communication with client-side team
Availability for regular evening meetings with the client

Nice to have:

Experience in fintech, investment platforms, or complex document management systems
Knowledge of Azure services (Azure AI Search, Cosmos DB, Document Intelligence)
Previous work with microfrontends architecture
Familiarity with AI/NLP tools like OpenAI or Claude (Anthropic)
Hands-on knowledge of tools such as MathNet.Numerics, Newtonsoft.Json, or ClosedXML

Why you’ll enjoy working with us:

You’ll work on a product that automates high-impact processes for real users
The team values autonomy, proactivity, and responsibility
Opportunity to influence architecture and product decisions from the ground up
Flexible work environment and remote-friendly culture
Direct collaboration with experienced professionals: backend engineers, designers, and product leaders
Competitive compensation and long-term project stability

If you’re a self-driven engineer passionate about clean architecture and modern product development — we’d love to hear from you.

Apply now to join a team building cutting-edge fintech software from the ground up.