Senior C#/.NET Developer (Azure DevOps, Databricks)

Project Description:

We are looking for a senior .NET developer to join our client's team and lead the build of a new data and application platform. You will replace a highly experienced developer, advise and guide the team, and set technical direction and standards. The team focuses on clean code, agile methodologies, and high-quality delivery. The client is from the investment banking industry.

Responsibilities:

• Design, develop, and maintain scalable back-end services and APIs using .NET (C#)

• Build and optimize data pipelines and workloads on Databricks

• Design, implement, and maintain CI/CD pipelines and release processes in Azure DevOps

• Advise and guide the team on architecture, design decisions, and best practices while the new platform is built

• Mentor developers and raise the technical level of the team through code reviews and pair programming

• Define and consume RESTful APIs, clearly communicating requirements and constraints across teams

• Translate business and product requirements into robust technical solutions

• Apply clean code principles and contribute to continuous improvement of engineering standards and tooling

• Write and maintain automated tests (unit, integration)

• Participate actively in agile ceremonies (Scrum/Kanban), including refinement, planning, reviews, and retrospectives

• Work closely with QA, product managers, and architects to ensure high-quality, business-aligned deliveries

• Support and improve existing applications in a fast-paced, enterprise investment-banking environment

Mandatory Skills Description:

• Minimum 10 years of professional experience as a .NET developer (C#), with a proven track record on long-term projects

• Strong hands-on experience with Azure DevOps (repos, boards, pipelines, CI/CD)

• Proven experience with Databricks

• Proven ability to act as a technical lead: advising, guiding, and mentoring a development team

• Experience building new platforms or major systems from the ground up

• Experience in automated testing of .NET applications

Clean coding skills

• Excellent problem-solving abilities

• Experience in RESTful API design

• Familiarity with agile development practices (Scrum, Kanban, etc.)

• Good communication skills and the ability to clearly state requirements to other teams

(Opportunity for Poland-based candidates)

Benefits:

💼 Tax-deductible costs on a contract of employment for all development roles

🔒 Stable employment based on an employment contract

🩺Private Medical & Dental care & Life Insurance

💰 Paid Referrals

🏋🏽 MyBenefit program (sports card, well-being program etc.)

🌎 Internal Mobility program - possibility of rotation between projects, locations, accounts

🎓 LuxTalent platform (webinars, training, courses)