Senior Fullstack Developer
# Senior Fullstack Developer **COGNATIV** · United Kingdom · `Remote` · `Full Time` 💼 **Уровень роли:** `Senior` 🕒 **Статус:** *Опубликовано: сегодня* · *Источник: Himalayas (JSON API)* --- ### Top Skills & Match 🎯 **Ключевой стек роли:** `[Full-Stack-Developer]` `[Senior-Fullstack-Developer]` `[.NET-Developer]` `[React-Developer]` `[C++-Developer]` `[Senior-Full-Stack-Development]` `[Full-Stack-Engineer]` `[Senior-Fullstack-Web-Application-Developer]` `[Senior-Full-Stack-Engineering]` `[Senior-Full-Stack-Developer-(React-Node.Js)]` `[¿Senior-Fullstack-Engineering]` `[Senior-Full-Stack-Developer-(JavaScript-Python)]` --- ### About the Role About the role: We are building a greenfield, document-driven lending platform that automates the full lifecycle of a loan application — 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. Responsibilities - Design and build business logic and domain modules in an ASP.NET Core API following Clean Architecture principles (Domain, Application, Infrastructure, API layers). - Build and maintain asynchronous background processing services (a .NET worker) for document-heavy workflows, coordinated through message queues. - Develop and maintain multiple Next.js/React applications serving different user populations (internal operations/back-office tooling and external/customer-facing portals), sharing a common package layer. - Design relational data models and write efficient data access code (EF Core / PostgreSQL). - Integrate with cloud-native infrastructure: message queues, blob storage, secrets management, and managed identity providers. - Implement authentication and authorization across multiple identity boundaries (workforce vs. external/customer identity). - Collaborate on API contracts and shared TypeScript types consumed by front-end applications. - Participate in architectural decisions that keep a growing monolith modular, maintainable, and well-tested (unit, integration, contract, and architecture tests). - Work within a human-in-the-loop product model: build tooling that lets operators review, correct, and approve AI-assisted extraction results, with full traceability of how each data point changed from raw intake to final approval. - Write and maintain automated tests across the stack and participate in CI/CD pipeline health. - Participate in code review, technical design discussions, and mentor less experienced engineers. 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) — 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 — from database schema to API to UI. - Excellent communication skills and experience working in a small, senior, high-autonomy engineering team. Originally posted on Himalayas
- Full-Stack-Developer
- Senior-Fullstack-Developer
- .NET-Developer
- React-Developer
- C++-Developer
- Senior-Full-Stack-Development
- Full-Stack-Engineer
- Senior-Fullstack-Web-Application-Developer
- Senior-Full-Stack-Engineering
- Senior-Full-Stack-Developer-(React-Node.Js)
- ¿Senior-Fullstack-Engineering
- Senior-Full-Stack-Developer-(JavaScript-Python)
Наблюдалась 2026-10-03, впервые 2026-10-03, источник — Himalayas (JSON API).