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# Senior Software Engineer (Kotlin)

- **Company:** XCELYST PARTNERS INC
- **Location:** London, WV, United States
- **Experience:** Expert
- **Salary:** $100,000.0 - $140,000.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Cloud Computing, Software Quality, Continuous Integration, Key Management, Systems Development Life Cycle, Data Logging, Test-Driven Development (TDD), System Availability, Reliability of Systems, Kotlin, Extreme Programming
- **Published:** May 22, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=eca76fd2d3fc93e0

## About the Role

Do you have experience in Test-driven development?, This is a hands-on engineering role with strong emphasis on Extreme Programming (XP) practices, including mob programming, test-first development, and continuous refactoring. Engineers are expected to contribute across development, integration, and production support, working closely as a team to maintain a high standard of code quality and system reliability., * Strong commercial experience building backend services in Kotlin

 * Deep experience with XP practices, including:

Mob programming as a primary way of working

Test-driven development (TDD)

Continuous refactoring and clean code discipline

 * Cloud experience in CARE Cloud / GCP, including:

GKE and / or Cloud Run

Cloud SQL, Memorystore

Artifact Registry, Cloud Logging

Key Management

 * CI/CD and SDLC experience in a regulated / enterprise environment
 * Comfortable working in production systems with high availability and correctness requirements



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