Senior Java Engineer – Scalable Backend & Integrations

Decskill; Lisboa; On-site; EUR 40,000 - 70,000; Full time

Benefits offered by this job

Long-term international projects

Growth opportunities

People-first culture

Ownership & collaboration

Job summary

Decskill is seeking a software engineer to join its growing team in Portugal. You will develop and maintain server-side applications, design new features for core platforms, and build integrations with internal and external systems.

The role requires strong Java 17+ expertise, distributed systems experience, and a solid background in scalable, high-performance software. You will collaborate with cross-functional teams, participate in the full software development lifecycle, and support releases

Qualifications

• Minimum of 5 years of professional software development experience.
• Experience with Agile software development methodologies.
• Experience with application modernization, migration, or refactoring initiatives.
• Strong debugging, troubleshooting, and performance optimization skills.
• Excellent communication and collaboration skills.

Responsibilities

• Develop and maintain server-side applications and core platform components.
• Design and implement new features for business-critical systems.
• Build and maintain integrations with internal and external systems.
• Ensure applications meet high standards of quality, security, performance, scalability, and reliability.
• Write clean, maintainable, high-performance, and testable code following software engineering best practices.
• Collaborate with cross-functional teams throughout the software development lifecycle.
• Support application releases, maintenance activities, and production deployments.
• Work with business stakeholders to gather requirements and deliver technical solutions.
• Provide advanced production support and troubleshoot complex technical issues when required.

Skills

Java 17+

Server-side development

Distributed systems

OOP & design patterns

Debugging & performance

Agile methodologies

English communication

Education

Bachelor's degree or higher in CS / Software Engineering / Mathematics

Job description

Decskill is seeking a software engineer to join its growing team in Portugal. You will develop and maintain server-side applications, design new features for core platforms, and build integrations with internal and external systems.

The role requires strong Java 17+ expertise, distributed systems experience, and a solid background in scalable, high-performance software. You will collaborate with cross-functional teams, participate in the full software development lifecycle, and support releases