April 9, 2026

Senior Java Engineer

Senior • Remote

6,000 - 6,400 USD

Krakow, Poland

N-iX is a global software development company founded in 2002, connecting over 2,400+ tech professionals across 40+ countries. We deliver innovative technology solutions in cloud computing, data analytics, AI, embedded software,IoT, and more to global industry leaders and Fortune 500 companies. Join us to create technology that drives real change for businesses and people across the world. 

We are looking for talented Senior Software Engineer to join our AI project in Europe.

Responsibilities:

  • Design and develop a robust and extensible Kotlin framework and platform for configuring and managing AI agents

  • Write clean, maintainable, and efficient code that complies with our coding standards

  • Ensure the performance, quality, and responsiveness of the framework/platform

  • Identify and correct bottlenecks and errors

  • Help to maintain code quality, organization, and automatization.

  • Create and maintain technical documentation for the framework/platform

Requirements:

  • At least 5 years of proficiency in Kotlin or Java

  • Deep experience with the Spring Framework 

  • Reactive tools experience (Project Reactor)

  • Knowledge of different communication protocols such as REST, GraphQL, gRPC

  • Experience with distributed systems

  • Familiarity with tracing, metrics and monitoring best practices

  • Experience of creating frameworks and platform for other developers 

  • Proficiency in Maven or similar tools 

  • Familiarity with NoSQL databases 

  • Very good spoken and written knowledge of English language (C1)

Nice to have:

  • Familiarity with GenAI, AI agents, machine learning, and natural language processing concepts is a plus

  • Experience with MCP, A2A, RAG is a big plus

  • Experience with event-driven architecture

  • Experience with Docker and Kubernetes

  • Python experience is nice to have

  • BSc or MSc in Computer Science, Engineering or relevant field

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Krakow, Poland

33 - 39 USD

🏢 Summary: Senior Python Engineer role focused on building and maintaining scalable backend services and full-stack features for an enterprise-grade endpoint protection and detection platform. The position involves working in an Agile team, integrating APIs and cloud services, and leveraging AI-powered development tools to enhance code quality and productivity. 🗂️ Requirements: 5+ years of software engineering experience, Strong expertise in Python, Experience building full-stack applications end-to-end, Understanding of RESTful APIs, Knowledge of client-server architecture, Experience with AWS or GCP, Experience with Kafka, Experience with Redis, Experience with PostgreSQL, Familiarity with Agile/Scrum methodologies, Experience using AI-assisted development tools 📃 Skills: Python, AWS, GCP, Kafka, Redis, PostgreSQL, REST, Agile, Scrum, AI 🏢 Description: (#4763) N-iX is looking for a Senior Python Engineer (with Golang knowledge) to join a collaborative product team of around 8 engineers working on a complex, high-impact software platform. You’ll contribute across the stack, building scalable backend services and intuitive frontend experiences, while actively using AI-powered development tools to improve productivity and code quality. The team follows Agile best practices, values clean architecture, ownership, and continuous improvement. As an engineer you’ll help to develop the platform that serves as an enterprise next-generation endpoint protection (EPP) + endpoint detection & response (EDR) solution that runs on Windows (as well as macOS, Linux, servers, etc.). It comes as a single, unified agent designed to prevent, detect, respond, and remediate cyber threats, including malware, ransomware, fileless attacks, and advanced persistent threats — all in real time. Responsibilities: Design, develop, and maintain backend services in Python. Collaborate closely with backend, frontend, and QA engineers in an Agile/Scrum environment. Write clean, testable, and well-documented code. Integrate and work with APIs, data stores, and third-party services. Use AI-assisted development tools (e.g., code assistants, testing tools, analysis tools) to improve delivery speed and quality. Support production systems and participate in troubleshooting when needed. Requirements: 5+ years of experience in Software Engineering. Strong expertise with Python. Experience building full-stack applications end-to-end. Good understanding of RESTful APIs and client-server architecture. Familiarity with Agile development methodologies. Experience working in a team environment with shared ownership. Comfortable using AI tools in daily development (e.g., coding assistants, test generation, debugging, documentation support). Experience with AWS/GCP. Experience with Kafka ecosystem & Redis, PostgreSQL. Nice to have: Ready to work with Golang