Senior Fullstack Developer

Senior Fullstack Developer

Full-Time Remote
COGNATIV
Description

About the role:
We are building a greenfield, document-driven lending platform that automates the full lifecycle of a loan application β€” from document intake and OCR-based extraction, through human-in-the-loop review, to final approval and downstream submission. The system is a modular monolith with a clear separation between backend services and multiple trust-boundaried web front ends, deployed natively on Azure.
We're looking for a senior full-stack engineer who is equally comfortable designing clean, testable back-end architecture in C#/.NET and building modern, production-grade UI in React/Next.js. You'll work across the stack: domain modeling, API design, background/async processing, and customer- and operations-facing web applications.


Requirements

  • 8+ years of professional software development experience, with deep expertise in C# / .NET (ASP.NET Core).
  • 4+ years building production front-end applications with React, including Next.js (App Router, server components/actions, route handlers).
  • Strong understanding of Clean/Layered Architecture, domain modeling, and separation of concerns in non-trivial back-end systems.
  • Experience with relational databases and ORMs (EF Core or equivalent), including migrations and query performance.
  • Solid TypeScript skills and comfort working in a monorepo with shared, versioned internal packages.
  • Experience with cloud infrastructure (Azure preferred; AWS/GCP equivalents considered) β€” messaging/queues, object storage, secrets management.
  • Experience implementing or integrating OAuth2/OIDC-based authentication, ideally with enterprise identity providers (e.g., Microsoft Entra ID or similar).
  • Strong automated testing discipline: unit, integration, and contract testing on both back end and front end.
  • Comfortable working across the full stack without hand-offs β€” from database schema to API to UI.
  • Excellent communication skills and experience working in a small, senior, high-autonomy engineering team.


Senior Fullstack Developer employer: COGNATIV

As a Senior Site Reliability Engineer at our innovative company, you will thrive in a dynamic work culture that prioritises reliability and operational excellence. We offer competitive benefits, a commitment to employee growth through continuous learning opportunities, and the chance to work with cutting-edge technology in a collaborative environment. Join us in a location that fosters creativity and teamwork, where your contributions directly impact the success of our AI-driven video monitoring platform.

COGNATIV

Contact Details:

COGNATIV Recruitment Team