Sigma SoftwareEngineering

Principal Full-Stack Engineer (Frontend Focus)

Remote (Poland)Posted 21 days ago

Seeking a Principal Full-Stack Engineer with a frontend focus to lead the development of advanced analytics dashboards for a large-scale distributed data platform. The role involves technical leadership, architecture design, mentoring, and hands-on development, primarily remote from Warsaw, Poland.

Location: Remote (Poland)

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