Principal Full-Stack Engineer – Frontend Focus
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Job Description
Lead the development of cutting-edge analytics dashboards as a Principal Full-Stack Engineer. Join Sigma Software's remote team based in Warsaw, Poland for international projects.
Responsibilities:
- Serve as the primary technical lead for dashboard development
- Design and architect the next-generation dashboard platform
- Lead post-mortems and coach team members on conducting thorough root cause analyses
- Partner closely with Product and Research teams to align features with business needs
- Profile, debug, optimize, and strengthen the security of web applications
- Contribute to an agile development process and create clear documentation
- Mentor junior engineers and support their professional growth
- Collaborate with a high-caliber engineering team focused on learning, experimentation, and technical excellence
- Foster a high-performance engineering culture emphasizing efficiency, collaboration, and quality
Requirements:
- 8+ years of relevant experience as a Full-Stack Developer
- Proven experience building modern web applications with React, GraphQL, TypeScript, and Node.js
- Experience creating reporting dashboards and working with data tools such as SQL, Looker, dbt, and Python
- Strong frontend engineering expertise with deep understanding of UI architecture and common design pitfalls
- Commitment to correctness, performance, and delivering clean, high-quality solutions
- Ability to independently own large features from technical design to production deployment
- Experience mentoring teammates through code reviews, design discussions, and hands-on support
- Problem-solving mindset with curiosity and rigor, using experimentation to find innovative solutions
- Familiarity with AI-assisted development tools for productivity and quality improvement
- Upper-Intermediate English level
Benefits:
- remote work flexibility
- professional growth opportunities
- chance to work on international projects
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