Senior .NET Developer (with Node.js expertise)

Cigen; Warszawa; Remote; PLN 80,000 - 120,000; Full time

Job summary

A leading software solutions provider is seeking a Senior .NET Developer with expertise in Node.js to join their fully remote team. The ideal candidate has over 5 years of backend development experience and strong knowledge of RESTful APIs and microservices. They offer a collaborative environment with flexible working hours, professional development opportunities, and a modern tech stack.

Benefits

PTO and sick leaves

Support for learning and development expenses

Flexible working hours

Working on modern technologies

Friendly and fun atmosphere

Qualifications

• 5+ years of backend development experience.
• Hands-on experience with Node.js in production environments.
• Strong understanding of RESTful APIs, microservices, and cloud environments.

Responsibilities

• Design, develop, and maintain backend services using .NET and Node.js.
• Collaborate with cross-functional teams to define architecture, APIs, and system integrations.
• Write clean, scalable, and maintainable code.

Skills

Backend development

.NET (C#)

Node.js

RESTful APIs

Microservices

SQL and NoSQL databases

CI/CD pipelines

Docker/Kubernetes

Good communication skills

Upper-Intermediate English

Job description

At CIGen, we partner with both startups and established enterprises to help them achieve their business goals through innovative software solutions. We are a Microsoft Gold Partner.

Our company is built on the core values of professionalism, trust, and mutual respect. We believe long-term business success comes from long-term trusted relationships—with our clients, employees, and partners.

We offer projects with a modern tech stack, a flexible schedule, and a professional, collaborative team. Open management, transparent processes, and a friendly atmosphere are at the heart of our culture.

The quality of our services is crucial—and we’re looking for professionals who share that mindset!

Currently, we are seeking a Senior .NET Developer (with Node.js expertise) to join our backend-focused project that combines .NET and Node.js.

This is a full-time position that can be fully remote.

Key Responsibilities

• Design, develop, and maintain backend services using both .NET and Node.js.

• Collaborate with cross-functional teams to define architecture, APIs, and system integrations.

• Write clean, scalable, and maintainable code, following best practices.

• Optimize application performance, ensuring reliability and high availability.

• Participate in code reviews and provide mentorship to team members.

• Contribute to technical decision-making, architecture improvements, and implementation strategies.

• Stay current with emerging technologies to keep the solutions modern and efficient.

Qualifications

• 5+ years of backend development experience, with solid expertise in .NET (C#).

• Hands-on experience with Node.js in production environments.

• Strong understanding of RESTful APIs, microservices, and cloud environments (Azure experience is a plus).

• Proficiency with databases (SQL and NoSQL).

• Knowledge of CI/CD pipelines, containerization (Docker/Kubernetes), and testing practices.

• Good communication skills and ability to work in a distributed, multicultural team.

• Upper-Intermediate level of English or higher.

What We Offer

• Fully remote position.

• An English-speaking, multinational environment where you can share expertise and learn from colleagues across countries.

• PTO and sick leaves to ensure your well-being.

• Support for learning and professional development expenses.

• Flexible working hours to maintain your work-life balance.

• Work on projects powered by modern technologies, guided by an experienced and skilled team.

• Opportunities to enhance both your technical and soft skills: join technical communities, contribute to pre-sales activities, explore interviewer or speaker roles, and participate in workshops.

• Transparent communication, collaborative culture, and a friendly, fun atmosphere that makes work enjoyable.

...and so much more!

We look forward to hearing from you!

Apply today and join CIGen!