Senior Full-Stack Developer, C# / React

Jobtailor; Deutschland; Remote; EUR 70.000 - 110.000; Vollzeit

Zusammenfassung

Jobtailor is seeking a capable fullstack engineer in Germany to build scalable SaaS solutions for the Brazilian insurance market. You will work on backend services in C# and frontend interfaces in React, emphasize REST APIs, security, and observability, while collaborating in Lean and Agile teams.

Ideal candidates have strong experience with .NET, Docker, SQL/NoSQL, and modern cloud platforms; TypeScript is a plus.

Qualifikationen

• Experience in backend development with C#/.NET and frontend with React.
• Strong knowledge of REST APIs, API versioning, and external integrations.
• Hands-on with .NET Core, dependency injection, middleware, and HTTP pipelines.
• Practical Docker experience in real-world projects across environments.
• Proven SQL and NoSQL experience with optimized queries and data modeling.
• Familiarity with Git, CI/CD, automated testing, and modern CI tools.

Aufgaben

• Develop services and APIs in C# (.NET) and scalable React interfaces.
• Model data and implement efficient queries in SQL and NoSQL databases.
• Ensure quality through unit, integration, and end-to-end testing and code reviews.
• Collaborate with Product, QA, and UX teams in Lean, Agile delivery.
• Contribute to security, observability, and performance improvements.

Kenntnisse

C#

.NET Core

React

REST APIs

SQL

NoSQL

Docker

Entity Framework Core

TypeScript

Applied AI

Ausbildung

Tech degree in progress

Tools

Git

CI/CD

Azure DevOps

RabbitMQ

Kafka

AWS

Azure

GCP

Terraform

Kubernetes

Jobbeschreibung

• Develop services and APIs in C# (.NET / .NET Core) following REST, SOLID, Clean Architecture, and Clean Code principles
• Develop and maintain scalable, accessible React interfaces using Hooks, Context, and global state management, preferably with TypeScript
• Model data and implement efficient queries in SQL databases (PostgreSQL, SQL Server, MySQL) and NoSQL databases (MongoDB, DynamoDB)
• Ensure quality through unit, integration, and end-to-end testing, code reviews, and sound engineering practices
• Safeguard security (authN/authZ, OWASP Top 10), observability (structured logs, metrics, tracing), and performance
• Promote best practices and actively participate in code reviews and design reviews
• Collaborate with Product, QA, and UX teams on discovery and continuous delivery in Lean, Agile, and Kanban/Scrum environments
• Work on end-to-end SaaS solutions for the Brazilian insurance market

Requirements

• Experience in backend development with C# (.NET) and frontend development with React
• Strong knowledge of REST APIs, API versioning, and integration with external services
• Hands-on experience with .NET Core, dependency injection, middleware, and HTTP pipelines
• Practical experience using Docker in real-world projects (building, distributing, and running applications across different environments)
• Proven experience with SQL (relational modeling and optimized queries) and NoSQL
• Knowledge of Git, CI/CD, automated testing, and continuous integration (GitHub, GitLab, Azure DevOps)
• Experience with scalable architectures, caching, messaging (e.g., RabbitMQ, Kafka), and observability
• Experience using and developing software development and engineering agents
• Experience developing with applied AI
• Experience with Claude, Copilot, or modern IDEs such as Cursor
• Currently pursuing a degree in a technology-related field
• Strong communication skills, autonomy, and a strong sense of ownership
• Preferred: experience with Entity Framework Core, Dapper, or similar ORMs
• Preferred: knowledge of TypeScript for frontend development
• Preferred: experience with React ecosystem frameworks (Next.js, React Query, Redux Toolkit)
• Preferred: experience with cloud platforms (AWS, Azure, or GCP), Terraform, and Kubernetes
• Preferred: experience with API security (OAuth2, OIDC, JWT), feature flags, and blue/green or canary releases
• Preferred: participation in communities, technical writing, or open-source contributions

Core Competencies

Demonstrates expertise in backend development with C# (.NET) and frontend development with React, focusing on REST APIs, scalable architectures, and efficient database management. Proficient in implementing security measures and best practices in software development while collaborating effectively in Agile environments.

Highest-signal resume keywords

• C# (.NET) Development
• React Development
• REST API Integration
• SQL and NoSQL Database Management
• Docker Experience

Hard Skills

• C#
• .NET Core
• React
• SQL
• NoSQL
• REST APIs
• Docker
• Entity Framework Core
• TypeScript
• Applied AI

Soft Skills

• Strong Communication Skills
• Autonomy
• Sense of Ownership

Industry Keywords

• SaaS Solutions
• Brazilian Insurance Market
• Agile
• Lean
• Kanban
• Scrum
• OWASP Top 10
• Observability
• Code Reviews
• Design Reviews

Tools & Technologies

• Git
• CI/CD
• Azure DevOps
• RabbitMQ
• Kafka
• AWS
• Azure
• GCP
• Terraform
• Kubernetes