Full-Stack Developer (React, TypeScript, Kotlin/Java)

Quick Facts

• Role: Full-Stack Developer (frontend-oriented)

• Focus: React/TypeScript microfrontends, dashboards, SSR, accessibility

• Backend: Kotlin or Java with Spring Boot

• Domain: Tools for advertisers (recommendations, analytics, marketing campaign automation)

Description

You will build and evolve scalable microfrontends and dashboard experiences using React, with support for SSR and accessibility. You’ll also collaborate on backend services in Kotlin/Java (Spring Boot) that generate and deliver personalized recommendations alongside the Data Science team. The role includes work on event-driven, cloud-based architectures and rotational on-call.

Responsibilities

• Develop and scale React-based microfrontends for analytics dashboards (including SSR and accessibility)

• Co-create API interfaces powering dashboards and market benchmarks

• Build backend services in Kotlin/Java with Spring Boot for personalized recommendations

• Collaborate on event-driven distributed architecture processing large data volumes in the cloud

• Use modern AI coding tools (e.g., GitHub Copilot, OpenAI, Anthropic) in daily development

• Participate in technical on-call rotations (about every 1.5–2 months)

Requirements

• Very good, practical knowledge of TypeScript, React, HTML/CSS, and modern web applications

• Understanding of JavaScript fundamentals, HTTP communication, REST APIs, and frontend testing (Jest/Vitest/Playwright)

• Experience building scalable UI and solid knowledge of accessibility (a11y), client-server communication, and frontend performance

• Solid foundations and comfort programming in Kotlin or Java, with knowledge of Spring Boot (no expert backend specialization expected)

• Familiarity with relational and non-relational databases (SQL, MongoDB), microservices architecture, and cloud solutions (preferred GCP)

• Practical experience using AI tools supporting development (GitHub Copilot, OpenAI, Anthropic or similar)

• Polish language required; English at least B2+

Benefits

• Long-term collaboration with project continuity support

• Consultant Development Program (career planning and mentoring)

• Access to 7N Learning & Development (webinars, libraries, technical/business events)

• Integration events (including trips and recurring activities)

• Opportunity to share knowledge via 7N Services

• Healthcare support, life insurance, sports cards, and discounts

• Stable contracts and personal support from a dedicated agent/manager