Client 360 Full-Stack Application Developer (React.js, Javascript, GraphQL), Assistant Vice President

Think start-up energy, backed by enterprise scale. We are building a modern platform within a global organization—combining the agility, ownership, and engineering freedom of a start-up with the stability and funding of an industry leader. You’ll work in a highly collaborative, international environment where your contributions directly shape real products used at scale.

Who We Are Looking For

Full-Stack Application Developer with a strong emphasis on the services layer (backend/API, integration, reliability) and a React.js UI. This role can be performed in a hybrid model, balancing work from home and office.

Responsibilities

Services Layer / Backend (Primary Focus)

• Design, build, and maintain service-layer components (RESTful APIs and/or GraphQL), including domain services, orchestration, and integrations.
• Implement authentication/authorization, request validation, error handling, and consistent API contracts.
• Develop data access and persistence logic using SQL and/or NoSQL stores; optimize queries and data models for performance and reliability.
• Build integration patterns (event-driven, async messaging, batch, streaming) using tools like Kafka/MQ.

UI / Front-End (React.js)

• Develop and maintain UI features using React.js, TypeScript, and modern state management patterns.
• Collaborate with design/UX to build reusable components, ensure accessibility, and deliver responsive experiences.
• Integrate the UI with backend services using well-defined API contracts; implement client-side validation and error handling.

Technical Expectations

• Proficiency in backend stacks such as Node.js (Express/NestJS) with TypeScript or Java (Spring Boot).
• Strong experience building secure and scalable service layers and APIs (REST/GraphQL).
• Solid experience with React.js, modern JavaScript/TypeScript, component patterns, and API integration.
• Experience with databases (PostgreSQL, SQL Server, MySQL, MongoDB) and data modelling.
• Strong testing discipline: unit and integration testing.
• Familiarity with CI/CD, code quality tools, and modern DevOps practices.

Education & Other

• B.S. degree (or foreign equivalent) in Computer Science, Engineering, Mathematics, Physics, or related technical field required.
• MS degree strongly preferred.
• Minimum 8–10 years of relatable experience.

Compensation

Minimum salary: zł182,004 annually. Salary is determined based on role scope, skills, experience, and objective performance-related criteria. Employees are eligible for discretionary annual performance-based awards.

Benefits

• Permanent contract from day one.
• Additional holidays (Birthday Day Off, 3rd and 5th year anniversary Day Off).
• Gold Medical Package for employees and their families.
• Premium life insurance package and private pension plan.
• Technical workshops, language classes, and development programs.
• Volunteer opportunities and employee networks.
• Well-being programs and additional seniority-based benefits.