FULLSTACK DEVELOPER - 2025-GRU-ST-000391

Kruger NearShore LLC - Rekluti; Polska; Hybrid; PLN 120,000 - 160,000; Full time

Job summary

Kruger NearShore LLC - Rekluti is seeking a Fullstack Integration Engineer to design, build, and maintain robust integrations across platforms, services, and applications, focusing on security and performance.

You will implement REST and WebSocket communication, work with Python, JavaScript, and cloud services on Google Cloud, and contribute to CI/CD pipelines and testing, while documenting APIs and integration flows.

Qualifications

• Experience with API integration and REST API development.
• Frontend and mobile integration using JavaScript frameworks.
• Experience with MySQL and NoSQL databases.
• Cloud architecture with Google Cloud Platform.
• Testing with pytest or unittest, CI/CD with GitHub Actions.

Responsibilities

• Design, develop, and maintain integrations between internal and third-party systems.
• Build and optimize REST APIs with performance and security focus.
• Validate interfaces to ensure smooth system communication.
• Create and automate unit and integration tests.
• Implement CI/CD pipelines using GitHub Actions.
• Monitor and optimize integrations across environments.
• Maintain API and integration workflow documentation.

Skills

API Integration

REST API development

Frontend & Mobile Integration

JavaScript

Angular

Flutter

Python

Flask/FastAPI

Tools

GitHub Actions

Swagger/OpenAPI

Git

GitFlow

Job description

Are you passionate about building seamless, high-performance integrations between platforms, services, and applications? We're looking for a Fullstack Integration Engineer to join our team and help us connect the dots—securely, efficiently, and at scale.

What You'll Do:

• Design, develop, and maintain integrations between internal and third-party systems.
• Build and optimize REST APIs with a strong focus on performance and security.
• Validate and refine interfaces to ensure smooth system communication.
• Create, execute, and automate unit and integration tests.
• Implement and maintain CI/CD pipelines using GitHub Actions.
• Monitor and optimize integrations across development, staging, and production environments.
• Maintain clear and structured documentation of APIs and integration workflows.

What You Know:

• API Integration REST API development with Python (Flask/FastAPI) Microservices, data formats (JSON, XML) & secure authentication
• Frontend & Mobile Integration using JavaScript, Angular, and Flutter Communication via REST APIs & WebSockets
• Databases Experience with MySQL, NoSQL, and cloud databases like Firestore, BigQuery
• Cloud & Architecture Hands-on with Google Cloud Platform: Cloud Functions, Pub/Sub, Cloud Run
• Testing & CI/CD Unit/integration tests with pytest/unittest CI/CD pipelines using GitHub Actions, Git & GitFlow
• Documentation Clear API documentation with Swagger/OpenAPI Focus on best practices & secure integration standards