June 9, 2026
Guidewire Developer
Mid • Remote
Warsaw, Poland
About the company
You will join a large, international organization undergoing a long-term technology modernization program. The company operates across multiple markets and is focused on evolving its internal technology landscape to better support business operations, scalability, and continuous improvement.
The organization has a stable foundation and is investing in the development of its core systems to increase consistency, efficiency, and quality across different areas of the business.
Why join
Long-term modernization and system evolution program
Opportunity to work across multiple areas of a complex system landscape
Stable environment with ongoing development initiatives
International, cross-functional collaboration model
Focus on quality, scalability, and continuous improvement
About the role
You will be part of a development team responsible for enhancing and maintaining a core enterprise platform consisting of multiple functional modules and components.
The role covers both development and evolution of existing system areas as well as delivery of new functionalities across different parts of the platform. You will work closely with business stakeholders, analysts, and technical teams to translate requirements into scalable and maintainable solutions.
This position is well-suited for developers who have experience working in different modules or areas of complex enterprise systems and want to contribute to a broader system landscape rather than a single narrow component.
Key responsibilities
Develop and maintain functionalities across multiple system modules and components
Work on both new feature development and enhancement of existing system areas
Translate business requirements into scalable technical solutions
Ensure high code quality, maintainability, and performance standards
Collaborate with developers, testers, analysts, and business stakeholders
Support estimation, planning, and refinement of development tasks
Maintain technical documentation and system knowledge
Participate in Agile/Scrum delivery processes and team ceremonies
Contribute to continuous improvement of system architecture and delivery practices
Requirements
Experience in software development within complex enterprise systems
Hands-on experience in at least one or more system modules / functional areas
-
Strong knowledge of:
Object-Oriented Programming
REST APIs
SQL databases
Experience working in Agile/Scrum teams
Ability to work across different parts of a system landscape
Strong analytical and problem-solving skills
Good communication skills and fluent English
Ability to work in structured, delivery-driven environments
Nice to have
Experience working across multiple modules or components of a large system
Background in complex, process-driven or regulated environments
Experience in distributed or international teams
Exposure to consulting, product, or enterprise delivery organizations
What’s in it for you
Participation in a long-term technology modernization program
Work across multiple areas of a complex enterprise system landscape
Stable and mature delivery environment
International collaboration with experienced teams
Flexible cooperation model: employment contract (UoP) or B2B
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Wroclaw, Poland
15,000 - 19,500 PLN
🏢 Summary: Senior .NET Developer role focused on designing and maintaining a long-term Portfolio Management System combining backend services, desktop applications, and system integrations. The position involves building data-intensive solutions, RESTful services, messaging components, and WCF integrations within a CI/CD-driven environment. You will work across backend and desktop layers to deliver reliable, scalable software. 🗂️ Requirements: Commercial experience with C# and .NET, Hands-on experience with VSTO, Experience developing backend applications, Experience implementing RESTful APIs, Hands-on experience with WCF services, Strong experience with Entity Framework, Strong experience with ADO.NET, Practical knowledge of MS SQL Server, Experience with relational database design, Experience with WPF, Familiarity with RabbitMQ or message queues, Understanding of CI/CD pipelines 📃 Skills: C#, .NET, VSTO, WCF, WPF, REST, EntityFramework, ADO.NET, MSSQL, RabbitMQ, CI/CD, ASP.NET, Azure, TeamCity, WinServices 🏢 Description: Project overview The project focuses on building and evolving a Portfolio Management System that includes backend services, messaging, and desktop-based user interfaces. The solution integrates multiple systems, processes large volumes of data, and supports continuous delivery through automated pipelines. Team You will work in a cross-functional team consisting of backend developers, desktop developers, QA engineers, and DevOps specialists. The team collaborates closely through code reviews, shared technical discussions, and iterative delivery. Position overview We are looking for a Senior .NET Developer to work on a long-term Portfolio Management System that combines backend services, desktop applications, and system integrations. You will be involved in designing, developing, and maintaining reliable software solutions that support complex business processes and data-intensive workflows. Technology stack C#, .NET, Entity Framework, ADO.NET , MS SQL Server, RESTful APIs, RabbitMQ, CI/CD pipelines, VSTO, WPF, WCF, Win Services, ASP.NET , MS Azure, and TeamCity Responsibilities Design and develop backend services using C# and .NET Develop, support, and enhance WCF services to enable reliable internal and external system integrations Implement and maintain RESTful APIs for internal and external integrations Work with MS SQL Server using Entity Framework and ADO.NET Develop and support desktop applications using WPF and VSTO Integrate asynchronous messaging solutions using RabbitMQ Collaborate with the team on architecture decisions and technical improvements Participate in code reviews, contribute to code quality, and maintainability Support CI/CD processes and ensure smooth delivery of new features Requirements Commercial experience with C# and the .NET platform Hands-on experience developing VSTO-based solutions Experience developing backend applications and RESTful APIs Hands-on experience developing and maintaining WCF services Strong practical experience with Entity Framework and ADO.NET Practical knowledge of MS SQL Server and relational database design Experience with WPF for desktop application development Familiarity with message queues, preferably RabbitMQ Understanding of CI/CD principles and automated delivery pipelines Ability to work collaboratively in a team-oriented environment Nice to have Exposure to large-scale or enterprise-level systems Experience in maintaining legacy applications alongside new development Basic knowledge of application performance optimization and troubleshooting What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)
Technology
TechTree
Senior Full Stack Engineer
Senior
Remote
Warsaw, Poland
60,000 - 80,000 EUR
🏢 Summary: Senior Full Stack Engineer role in a healthcare SaaS environment focused on building and scaling a cloud-based platform for medical practices. The position involves leading end-to-end feature development, driving architecture decisions, mentoring engineers, and contributing to secure, scalable product delivery in a fully remote EU team. The role includes collaboration across product and design teams, with strong emphasis on quality, testing, and CI/CD practices. 🗂️ Requirements: 6+ years of professional engineering experience, 2+ years in a senior engineering role, Experience with Symfony, Experience with Doctrine ORM, Knowledge of Symfony Security and Event Dispatchers, Experience with Domain-Driven Design, Ability to write and maintain unit and integration tests, Experience with React.js, Strong MySQL experience, Experience with Docker, Familiarity with GitLab CI/CD, Understanding of frontend and backend security, Strong problem-solving skills, Clear communication skills 📃 Skills: Symfony, Doctrine, DDD, React, MySQL, Docker, GitLab, CI/CD, PHP, Security 🏢 Description: About the Role A healthcare SaaS company is looking for a Senior Full Stack Engineer to join their core product team. Their cloud-based platform transforms the daily operations of medical practices - streamlining practice management and patient relationships across thousands of healthcare providers. This is a high-ownership role. You'll lead end-to-end feature development, drive architecture decisions, and mentor junior engineers - all in a fully remote, cross-functional team that ships fast and takes quality seriously. What You'll Do Lead full stack feature development from concept to deployment, with a strong focus on security and scalability Drive architecture and design decisions to ensure solutions meet healthcare industry standards Collaborate with product managers, designers, and stakeholders to align technical solutions with business goals Mentor junior developers, promoting continuous learning and innovation within the team Implement automated testing, continuous integration, and continuous deployment to uphold code quality Contribute to roadmap planning with insights on technical feasibility, timelines, and resources Stay up-to-date with industry trends and apply new knowledge to enhance the product What We're Looking For 6+ years of professional experience, with at least 2 years in a senior engineering role Extensive experience with Symfony , including Doctrine ORM and key components (Security, Event Dispatchers) Advanced understanding and practical experience with Domain-Driven Design (DDD) Proficient in writing and maintaining unit and integration tests Solid understanding of React.js , with the ability to improve frontend as needed Strong experience with MySQL - design, optimisation, and management Experience with Docker for managing development environments Familiarity with GitLab CI/CD pipelines for automated build, test, and deployment Security awareness for frontend and backend development, particularly when handling sensitive data Strong problem-solving skills and clear communication across technical and non-technical stakeholders Nice to Have Experience with SaaS products and/or the healthcare industry Working Model Fully remote (EU) Full-time: Monday-Friday, 09:00-18:00 with 1-hour lunch break 1-week onboarding at the Munich HQ to meet the team Benefits Full equipment provided (laptop, headphones, keyboard, mouse, smartphone with unlimited data, monitor) Bonus for paid English or German language courses Training courses, books, workshops, and team-building activities Partnership with an online psychotherapy platform - three sessions provided if needed Regular company meetups and a yearly Christmas dinner