Principal Fullstack Engineer

Pragmatike

full-time

Posted on: 1/5/2026

Location Type: Remote

Location: Poland

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About the role

Lead the design and development of scalable fullstack applications using React (SPA) and Node.js.
Own and drive monolith-to-SPA migration strategies, including incremental decomposition, API design, and frontend re-architecture.
Define and enforce frontend and backend architecture, patterns, and best practices.
Act as technical lead for the fullstack domain: reviewing designs, mentoring engineers, and setting engineering standards.
Collaborate closely with product, DevOps, and platform teams to align application architecture with infrastructure constraints.
Design and maintain backend services and APIs (REST/GraphQL) with a focus on performance, reliability, and maintainability.
Improve application observability, performance, and resilience.
Participate in hiring, onboarding, and growing senior engineering talent.
Drive technical decision-making with a long-term platform mindset.

Senior-level experience (Staff / Principal) as a Fullstack Engineer.
Strong expertise in React and modern frontend ecosystems (SPA architecture, state management, performance optimization).
Strong experience with Node.js backend development and API design.
Proven hands-on experience migrating monolithic applications to SPA or modular architectures.
Ability to lead technical initiatives end-to-end.
Solid understanding of software architecture, system design, and trade-offs.
Experience working in fast-moving, product-driven environments.
Excellent communication skills and ability to influence technical direction.

Benefits

Tip: use these terms in your resume and cover letter to boost ATS matches.

ReactNode.jsSPA architectureAPI designRESTGraphQLperformance optimizationsoftware architecturesystem designmonolith-to-SPA migration

leadershipmentoringcommunicationinfluencecollaborationtechnical decision-makingproblem-solvingteam buildingonboardinginitiative