.NET Software Engineer - Desktop Applications

Job Description

As part of Endava's strategic partnership with WTW, who provide data-driven, insight-led solutions in the areas of people, risk and capital, we're building dedicated software engineering teams to support WTW's Insurance Consulting and Technology Division.

WTW's Insurance Consulting and Technology business is a global leader in P&C, Life and Health insurance software and advisory services, with over 1,700 colleagues across 35 markets. More than 1,000 insurers worldwide trust our combination of advisory insight and advanced software to help them navigate complexity and drive sustainable growth.

Joining Endava, you'll work exclusively with WTW to help embed AI-enabled engineering practices, modern ways of working and deep insurance technology expertise, contributing to the next generation of products and services for insurers worldwide. Working as part of a dedicated team established through a Build-Operate-Transfer (BOT) model, you'll collaborate closely with WTW while building your career as an Endava employee, supporting the long-term success of this strategic partnership.

About the Role

We are looking for a Software Engineer to develop and maintain the WTW ResQ insurance reserving product as part of a collaborative engineering team. The role focuses on C#/.NET development, WPF desktop applications, integrations and the safe evolution of an established product.

The engineer will use approved agentic coding tools to support software delivery.

Release and production-support activities take place during normal office hours, under the support arrangements agreed between WTW and Endava. The role does not include out-of-hours or on-call support.

Key Responsibilities

· Design, develop and maintain ResQ features using C#, .NET 10 and .NET Framework 4.7.2, including refactoring and defect fixes.

· Develop WPF desktop applications and integrations using COM interfaces, SQL Server, SignalR and MassTransit.

· Deliver assigned changes, with Team Lead guidance on complex work; maintain technical tasks, estimate effort, conduct technical spikes and flag blockers early.

· Participate in scrum planning, refinement, reviews and retrospectives.

· Contribute to technical design within WTW’s standards; product-wide architectural decisions remain with WTW.

· Review code, share knowledge and maintain technical documentation and runbooks for assigned components.

· Develop, maintain and run unit, integration and regression tests, including Ranorex GUI automation.

· Use Git/GitHub and Azure DevOps Pipelines; maintain component build and deployment tooling, resolve pipeline failures and apply patches within WTW guidance and permissions.

· Support versioning, configuration, packaging, compatibility checks, releases, urgent patches and support handover for assigned components within agreed support arrangements.

· Investigate production issues, identify root causes and implement fixes and preventative improvements within agreed support arrangements.

· Triage and remediate security scan findings for assigned components in line with WTW standards; escalate issues outside the role’s scope.

· Use approved agentic coding tools for code exploration, bounded changes, tests and refactoring; review and test outputs before adoption and share practical learning.

Qualifications

· Professional experience developing applications with C# and .NET.

· Experience with WPF and desktop application development.

· Familiarity with .NET 10 and/or .NET Framework 4.7.2.

· Experience with SQL Server and Git.

· Understanding of software testing, debugging and code review practices.

· Ability to work with an existing codebase and contribute to its maintenance and improvement.

· Ability to use AI coding tools thoughtfully, review generated changes and verify them with tests.

· Good communication and collaboration skills.

· At least 3 years of relevant engineering experience.

Desirable

· Experience with COM interfaces, SignalR or MassTransit.

· Experience with Ranorex GUI test automation.

· Familiarity with Azure DevOps Pipelines.

· Experience with desktop application packaging, deployment or production support.

· Exposure to insurance or actuarial applications.

· Familiarity with PostgreSQL, Snowflake or Databricks, where relevant to the roadmap.

· Experience using AI-assisted developer tools grounded in enterprise code and documentation.

Additional Information

For this position, the gross base salary starts from PLN 15 267 PLN Gross per month (full-time employment contract), determined using objective and gender-neutral criteria including skillset, experience and role responsibilities.

Our benefits offering typically include private medical insurance, dental plan, and glasses reimbursement. The figure represents the initial remuneration we expect to offer for this role and does not limit the right to equal pay for women and men performing the same work or work of equal value. All remuneration and benefits decisions are based on non-discriminatory, gender-neutral criteria, and in accordance with the Polish Labour Code amendments implementing Directive on pay transparency, we do not request or consider candidates’ current or past remuneration during the recruitment process.”

At Endava, we’re committed to creating an open, inclusive, and respectful environment where everyone feels safe, valued, and empowered to be their best. We welcome applications from people of all backgrounds, experiences, and perspectives—because we know that inclusive teams help us deliver smarter, more innovative solutions for our customers. Hiring decisions are based on merit, skills, qualifications, and potential. If you need adjustments or support during the recruitment process, please let us know.