Java Developer

Net2Source (N2S); Warszawa; Hybrid; PLN 180,000 - 260,000; Full time

Job summary

Net2Source Inc. is seeking a Specialist with 5–7 years of Java experience to design and develop scalable microservices-based applications in Warsaw, Poland. The role requires hands-on Java development, microservices expertise, and collaboration with cross-functional teams.

The position is hybrid (3 days onsite per week) and permanent, located in Warsaw. The candidate should be proficient with Spring, Kafka, Kubernetes, AWS, and gRPC to deliver robust backend services and optimized performance.

Qualifications

• 5–7 years of hands-on Java development experience.
• Strong knowledge of microservices architecture and scalable backend design.
• Experience with Spring/Spring MVC, Kafka, Kubernetes, AWS, and gRPC is preferred.

Responsibilities

• Develop and maintain enterprise Java applications.
• Design microservices architectures for modular, scalable systems.
• Implement robust backend services with Spring framework.
• Collaborate with cross-functional teams to define features.
• Optimize performance and reliability; participate in code reviews and continuous improvement.
• Mentor junior developers and stay updated with emerging technologies.

Skills

Core Java

Multi-threading

Algorithms & Data Structures

Investment Banking (ideally Risk)

Tools

Kafka

Kubernetes

Amazon AWS

gRPC

Spring MVC

Job description

Net2Source Inc. is one of the fastest growing diversities certified global workforce solutions companies with an unprecedented YoY growth of over 100% for last 6 years working with Fortune 1000/Global 2000 across 34 countries and 5 continents including North America, South America, Europe, Asia, Australia, and Middle East.

About the Role:

Location – Warsaw, Poland

Mode of Work – Hybrid 3 Days Onsite per week

Type of Hiring – Permanent

Skills-

Mandatory Skills :

Core Java, Multi-threading, Algorithms & Data Structures, Kafka, Kubernetes, Amazon AWS, gRPC, Investment Banking (ideally Risk)

Job Summary:

Seeking a Specialist with 5 to 7 years of experience in Java Frameworks to design and develop scalable microservices based applications

Job Description:

• Develop and maintain enterprise level applications using Java and related frameworks
• Design microservices architecture to ensure modularity and scalability
• Utilize Spring and Spring MVC frameworks for building robust backend services
• Collaborate with cross functional teams to define design and ship new features
• Ensure high performance and responsiveness of applications
• Participate in code reviews and contribute to continuous improvement of development processes
• Troubleshoot debug and optimize existing applications to enhance performance and reliability

Roles and Responsibilities:

• Lead the development and implementation of microservices using Java and Spring frameworks
• Architect solutions that are scalable maintainable and secure
• Mentor junior developers and provide technical guidance within the team
• Collaborate with product owners and stakeholders to gather requirements and translate them into technical specifications
• Ensure adherence to best practices in coding testing and deployment
• Conduct performance tuning and optimization of applications
• Stay updated with emerging technologies and integrate them when appropriate to improve application efficiency