KOTLIN DEVELOPER (DESKTOP) | INSURANCE (HYBRID)

iTRTech Group; Lisboa; Hybrid; EUR 35,000 - 39,000; Full time

Job summary

iTRTech Group in Lisbon is seeking a Senior Kotlin Developer (Desktop) to join a strategic software modernization project in the insurance sector. You will help migrate desktop applications toward a modern microservices architecture, using Kotlin and Java, and collaborating across international teams.

The role combines API integration, code quality, and production support, with a hybrid work model requiring two days per week in Moscavide office.

Qualifications

• 5–8 years of professional software development experience.
• Strong Kotlin experience, desktop-oriented development.
• Solid Java development and API design capabilities.
• Experience with microservices-based solutions and RESTful APIs.
• English at B2 level or higher; Portugal-based hybrid arrangement.

Responsibilities

• Design, develop and maintain software using Kotlin and Java.
• Migrate legacy desktop apps to microservices architecture.
• Design, build and consume RESTful APIs and integrate with services.
• Ensure code quality, maintainability, and performance; participate in code reviews.
• Create and maintain technical documentation for services and components.

Skills

Kotlin

Java

Microservices

REST APIs

SOLID Principles

Clean Architecture

Code Reviews

Debugging

Technical Documentation

Tools

Microsoft Azure

Job description

KOTLIN DEVELOPER (DESKTOP) | INSURANCE (HYBRID LISBON)

Portuguese company hires for hybrid position

Location: Moscavide, Lisbon, Portugal

Only candidates already based in Portugal will be considered

Work Model: Hybrid — two days per week at the office

Language Requirements: English B2 or higher — mandatory

Seniority: Senior (5-8 years)

Sector: Insurance

Rate Between €3100 - 3500 RV (gross value)

About The Opportunity

We are looking for an experienced Kotlin Developer to join a strategic software-modernization project in the insurance sector.

You will contribute to the migration of desktop-oriented insurance software towards a modern microservices architecture. The position combines Kotlin and Java development, API integration, solution design, code quality and production troubleshooting within an international technical environment.

Key Responsibilities

• Design, develop and maintain software solutions using Kotlin and Java.
• Contribute to the migration of existing insurance applications to a microservices-based architecture.
• Create, enhance and maintain system functionalities.
• Design, build and consume RESTful APIs.
• Participate in code reviews and approve Pull Requests.
• Design scalable solutions based on microservices.
• Apply SOLID principles, clean architecture and software-development best practices.
• Ensure code quality, maintainability, reliability and performance.
• Diagnose technical issues and debug production problems.
• Investigate and resolve application defects.
• Create and maintain technical documentation for services and system components.
• Collaborate with developers, architects and other project stakeholders.

Mandatory Requirements

• Between 5 and 8 years of professional software-development experience.
• Strong professional experience with Kotlin, particularly in desktop-oriented development.
• Solid Java development experience.
• Experience designing or developing microservices-based solutions.
• Experience building and consuming RESTful APIs.
• Strong understanding of SOLID principles and clean architecture.
• Experience with code reviews and Pull Request approval processes.
• Strong debugging, troubleshooting and defect-resolution capabilities.
• Ability to create clear technical documentation.
• English proficiency at B2 level or higher.
• Availability to work from the Moscavide office twice per week.
• Current residence in Portugal or availability to work under the required hybrid arrangement.

Nice to Have

• Experience with desktop-oriented C++ development.
• Knowledge of Angular 8 or later.
• Experience with Vert.x.
• Experience with Microsoft Azure.
• Previous experience in insurance software or regulated environments.
• Experience participating in legacy-system modernization or migration projects.

The Ideal Profile

The ideal candidate is a Kotlin Developer with a strong desktop-development background and solid Java expertise. You are comfortable working with existing software while helping transform it into a modern, service-oriented architecture.

You value clean, maintainable code and are confident reviewing Pull Requests, solving production issues and collaborating on technical decisions. Experience with software migrations, microservices and the insurance sector will be particularly valuable.

Questions for Candidates

Before Applying, Please Confirm

• Are you currently based in Portugal?
• Are you available to work from the Moscavide office twice per week?
• How many years of professional software-development experience do you have?
• How many years of hands-on experience do you have with Kotlin?
• Have you used Kotlin specifically for desktop application development?
• What is your level of professional experience with Java?
• Have you participated in a legacy-system or desktop-application migration?
• Do you have experience designing or developing microservices?
• Have you built and consumed RESTful APIs?
• Do you regularly apply SOLID principles and clean architecture?
• Do you have experience reviewing code and approving Pull Requests?
• Have you worked with C++, Angular 8+, Vert.x or Microsoft Azure?
• Have you previously worked on insurance software?
• Is your English level B2 or higher?
• Are you comfortable with a monthly B2B/RV rate between €3,100 and €3,500?
• What is your availability to start?

Keywords to Include in Your CV

Kotlin Developer, Kotlin Desktop, Desktop Development, Desktop Applications, Java, Java Developer, Backend Development, Microservices, Microservices Architecture, Software Migration, Legacy Modernization, Insurance Software, Insurance Technology, RESTful APIs, REST API, API Development, API Integration, SOLID Principles, Clean Architecture, Code Quality, Code Review, Pull Requests, Troubleshooting, Debugging, Production Support, Defect Resolution, Technical Documentation, System Design, Software Architecture, C++, C++ Desktop, Angular 8+, Angular, Vert.x, Microsoft Azure, Azure Cloud, Hybrid Lisbon, English B2

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