Senior Full-stack Developer (.Net + React)

Description

We are seeking a talented and motivated Software Engineer with a strong focus on C# and React to join our team. The ideal candidate will have extensive experience working on cloud-hosted APIs, backend services, and web application technologies. You will be responsible for designing, developing, and maintaining both existing front-end and back-end components, as well as creating new applications and APIs hosted in Azure. You will play a critical role in ensuring the performance, reliability, and quality of our software products at the bank, as well as building new applications and features.

What we offer

• Global Relocation - (Relocation options; Experience in an international environment; Cross-cultural experience)

• Recognition and Evaluation - (Feedback culture; Regular appraisals)

• Time Off - (Annual holiday - 20 or 26 days. The duration of the leave depends on the overall seniority; Occasional leave - 1 or 2 days/ depending on the circumstances; Child care leave - 2 days or 16 hours per year; Absence due to force majeure - 2 days or 16 hours per year; Maternity Leave - 20 weeks; Parental Leave - 41 weeks; Paternity Leave - 14 days)

• Luxoft Training Center - (Expert-led tech courses covering basic to advanced topics; Internal instructor-led soft skills courses; Comprehensive in-house self-learning resources for both soft and hard skills; Access to external self-learning libraries like ProQuest eBook and Udemy for Business; Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy; Custom Learning Programs: upskilling, reskilling, technical mentorship; Leadership Programs for Managers)

• Well-being and Work-life Balance - (Multisport card; Possibility to order Multisport card at the corporate rate for family members; LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.; One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners; Preferential banking offer; Preferential car leasing offer; Cafeteria program discounts for shops, cinema tickets, holiday offers; Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support)

• Health Care - (Private Healthcare Insurance with unlimited access to specialists; Full dental support; Travel Insurance; Possibility to add private healthcare coverage for family members at the corporate rate; Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer; Reimbursement for corrective glasses)

• Company Events and Friendly Environment - (Many fun social activities organized by the Luxoft team offline in your city; Online entertainment events for whole company and local team events; A workplace where you’re treated with respect within a multicultural team)

• Internal Mobility - (Rotation between projects and accounts; New career opportunities)

• Self-Learning Library

• CSR Projects

Other

• Languages: English: B2 Upper Intermediate

• Seniority: Senior

Requirements

• React / TypeScript: Strong experience with 18+ and its core principles, including state management, hooks, and component lifecycle. Experience with Vite, TanStack, and Tailwind CSS

• C# .NET: Solid understanding of .NET Core (8+), including ASP.NET Core, Signal R, EF Core, and concurrency via multithreading and async/await patterns.

• Azure: Experience creating/deploying/troubleshooting App Services such as Web Apps and Functions (AZ Signal R nice to have).

• Relational Database Knowledge: Experience with SQL databases, such as SQL Server or Sybase.

• Unit Testing: TDD-driven development with XUnit, NUnit, and/or Jest/Vitest.

• Problem-Solving Skills: Strong analytical and problem-solving abilities with the ability to independently investigate/evaluate new technologies/libraries.

• Advanced experience with relational databases such as SQL Server, with the ability to design and optimize/tune while maintaining stability/data consistency.

• AI experience with machine learning, NLP, model training, Copilot, MCP servers, etc.

• Experience with CI/CD platforms such as Jenkins, GitLab, and TeamCity.

• Experience with deployments via Terraform and GitLab pipelines.

Zakres obowiązków

• Back-End Development: Developing server-side logic using .NET technologies, creating REST APIs, and integrating with databases.

• Front-End Development: Building rich user interfaces using React 18+ and ensuring a stable, performant, and responsive user experience.

• Full Stack Integration: Ensuring seamless integration between front-end and back-end components.

• Code Quality: Writing clean, maintainable, and efficient code following best practices and coding standards, utilizing AI coding assistants.

• Testing: Create and expand unit and integration tests for both frontend and backend code.

• Continuous Improvement: Staying up to date with the latest industry trends and technologies with a growth mindset of continuously improving skills and knowledge.

• Deployments: ensure stability through frequent and automated deployments.

• Production stability: Assist with L3 production support/issue investigation and remediation.

• Strong understanding of software testing principles, methodologies, and tools.

• Proficiency in analyzing, debugging, and solving technical issues.

• Team player with excellent communication skills to work effectively with cross-functional teams and business stakeholders.