Senior Full-Stack Engineer: .NET Core + React/TypeScript

Gizli Şirket; Fatih; On-site; TRY 480,000 - 720,000; Full time

Job summary

Gizli Şirket in Marmara Bölgesi invites an experienced full-stack developer to design, build, and deploy scalable product features across frontend and backend. You will work with .NET Core and React + TypeScript, REST APIs, and microservices, applying design patterns and Clean Code while collaborating with Product and Analytics teams to translate requirements into production-ready solutions.

Expected to own problems end-to-end, optimize performance, ensure security with JWT/OAuth2, and

Qualifications

• At least 5 years of professional full-stack development experience, including hands-on experience taking at least one product from scratch to production.
• Strong production-level experience with .NET Core and React + TypeScript.
• Strong knowledge of System Design, Software Architecture, DDD, SOLID, Design Patterns, and Clean Code principles.
• Experience with REST APIs, gRPC, microservices/distributed architectures, database optimization, and modern frontend development.
• Strong understanding of security, CI/CD, Docker, OWASP, Unit/Integration Testing, and secure software development practices.
• Experience with OpenTelemetry, Grafana, Prometheus, Elastic APM, Kubernetes, or Helm is a plus.
• Proficiency in English sufficient to read and write technical documentation and work with global partners.
• Strong analytical and problem-solving skills, a high sense of ownership, and the ability to communicate technical topics clearly to non-technical stakeholders.
• Experience with NoSQL technologies such as Redis, MongoDB and Elasticsearch
• Proficiency in RDBMS technologies such as PostgreSQL and MongoDB

Responsibilities

• Develop end-to-end, high-performance, scalable, and sustainable product features across frontend and backend
• Analyze requirements and design, develop, test, and deploy solutions to production.
• Build modern applications using .NET Core and React + TypeScript, working with REST APIs, microservices, and distributed architectures
• Design and maintain sustainable software architectures based on System Design, Software Architecture, DDD, SOLID, Design Patterns, and Clean Code principles, while contributing to reducing technical debt
• Identify and resolve production performance issues and database bottlenecks through optimization techniques
• Implement secure software solutions using JWT, OAuth2, and Identity/RBAC, and contribute to CI/CD, Docker, and testing processes
• Work with SignalR, Hangfire, frontend state management, and API integrations to deliver reliable and scalable applications
• Collaborate with Product and Analytics teams to turn business requirements and mockups into working products and technical solutions
• Take end-to-end ownership of problems from analysis through production and communicate effectively with both technical and non-technical stakeholders
• Leverage AI development tools such as Claude, GitHub Copilot, and Cursor to produce secure, high-quality code

Skills

Full-stack dev

Ownership

Analytical thinking

English proficiency

Education

Bachelor's degree

Tools

.NET Core

React + TypeScript

REST APIs

gRPC

Microservices

Docker

Kubernetes

OpenTelemetry

Grafana

Prometheus

Elastic APM

Redis

MongoDB

Elasticsearch

PostgreSQL

Job description

Gizli Şirket in Marmara Bölgesi invites an experienced full-stack developer to design, build, and deploy scalable product features across frontend and backend. You will work with .NET Core and React + TypeScript, REST APIs, and microservices, applying design patterns and Clean Code while collaborating with Product and Analytics teams to translate requirements into production-ready solutions.

Expected to own problems end-to-end, optimize performance, ensure security with JWT/OAuth2, and