Senior Full-Stack Engineer: TS/React & AWS

Sigma Software; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Job summary

Sigma Software is seeking a Strong Middle / Senior Full Stack Developer with strong TypeScript expertise and hands-on ReactJS frontend experience. The role involves backend work with NestJS and cloud integration with AWS, delivering enterprise-scale AdTech platform components.

You will join a product-focused team responsible for scalable, high-load systems, collaborate with architects and QA, and help shape architecture decisions while maintaining code quality and performance.

Qualifications

• Strong TypeScript expertise and ReactJS frontend experience.
• Backend development with NestJS.
• Hands-on experience with AWS cloud services.
• Experience with scalable, enterprise-level applications.

Responsibilities

• Develop and maintain full-stack features using TypeScript, ReactJS and NestJS.
• Collaborate with architects and QA engineers to design robust solutions.
• Improve performance, scalability, and reliability of the platform.
• Write clean, well-tested code following best practices.
• Participate in architecture discussions and design reviews.

Skills

TypeScript

ReactJS

English

Tools

NestJS

AWS

Job description

Sigma Software is seeking a Strong Middle / Senior Full Stack Developer with strong TypeScript expertise and hands-on ReactJS frontend experience. The role involves backend work with NestJS and cloud integration with AWS, delivering enterprise-scale AdTech platform components.

You will join a product-focused team responsible for scalable, high-load systems, collaborate with architects and QA, and help shape architecture decisions while maintaining code quality and performance.