April 8, 2026

Senior Fullstack (React+Next.js)

Senior • Remote

5,500 - 6,000 USD

Krakow, Poland

#4729

Our Client is building a SaaS platform used globally to streamline business-critical workflows and transform document-driven processes into intelligent, automated systems. Their platform powers agreement lifecycle experiences at a massive scale, serving millions of organizations across highly regulated and enterprise environments.

The team develops a unified, widget-based frontend platform that standardizes how product teams deliver modern, high-performance user interfaces. This platform provides a shared shell, micro-frontend architecture, and automated CI/CD pipelines that distribute versioned UI components globally with high reliability. 

Part of the work includes supporting secure, compliance-heavy environments designed for federal-grade workloads. Engineers design systems that are secure by default, privacy-aware, and built on zero-trust principles. The role involves solving advanced platform challenges such as resilient rollouts, deterministic builds, telemetry without exposing sensitive data, and high-availability architecture in constrained environments.

This is an opportunity to shape platform standards, performance practices, and developer tooling in a system operating at meaningful scale.

Responsibilities

  • Design and implement reusable frontend components within a micro-frontend architecture.

  • Build and maintain a shared UI platform that enables consistent user experiences across products.

  • Develop scalable CI/CD pipelines that publish versioned frontend artifacts for global delivery.

  • Contribute to secure-by-default engineering patterns aligned with compliance requirements.

  • Optimize performance, observability, and reliability across distributed frontend systems.

  • Collaborate with cross-functional teams to define platform standards and engineering best practices.

  • Integrate frontend systems with RESTful and/or gRPC backend services.

  • Support high-availability deployments in regulated or restricted environments.

Required Qualifications

  • 4+ years of professional software development experience.

  • Strong proficiency in TypeScript and React.

  • Experience building reusable, production-grade frontend component libraries.

  • Experience with frontend testing frameworks and test automation.

  • Solid experience with Next.js, Node.js, and Express.

  • Proven track record delivering SaaS products.

Preferred Qualifications

  • Experience across the full software development lifecycle.

  • Familiarity with schema modeling (e.g., JSON Schema or XML Schema).

  • Experience with Agile and test-driven development methodologies.

  • Experience with Azure DevOps or comparable CI/CD tooling.

  • Knowledge of micro-frontend frameworks.

  • Experience building or consuming RESTful or gRPC services.

  • Strong written communication skills in asynchronous environments.

  • Passion for platform engineering and high-quality software craftsmanship.

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