Senior Software Engineer (.NET / Embedded)

EPAM Systems Inc; United States; Remote; USD 110,000 - 170,000; Full time

Job summary

EPAM Systems is seeking a Senior Software Engineer to own the control software of a precision optical metrology tool. You will design, develop, test, and maintain the tool control software in C# and .NET, with emphasis on safe modularisation and robust multi-threaded execution.

The role requires 3+ years of production-level C#/.NET experience, hardware integration know-how, and a strong TDD mindset. You will mentor junior engineers and participate in code reviews while collaborating across

Qualifications

• 3+ years of hands-on C#/.NET in production systems.
• Hardware-related development background with control or instrument interfaces.
• Strong knowledge of SOLID, design patterns, and Clean Code.
• Proficient in TDD and owning automated test suites.
• Experience refactoring long-lived legacy codebases.
• Mentor peers and conduct code reviews.

Responsibilities

• Design, develop, test, and maintain tool control software in C# and .NET.
• Drive modularisation of a mature codebase without destabilising a production system.
• Build robust concurrent code with multi-threading, locking, and parallelism in .NET.
• Apply TDD and strengthen automated testing, including hardware-related tests.
• Conduct code reviews and mentor mid-level developers.
• Troubleshoot complex issues across software and hardware boundaries.

Skills

C#

.NET

Multi-threading

TDD

Code reviews

Mentoring

English B2

Real-time systems

Hardware integration

Device drivers

Motion control

Sensors & actuators

Imaging / signal processing

Tools

Git

Visual Studio

NUnit

MSTest

Job description

We are seeking a Senior Software Engineer (.NET / Embedded) to work on the control software of a high-precision optical metrology tool used in semiconductor manufacturing.

Responsibilities

• Design, develop, test, and maintain tool control software in C# and .NET
• Drive modularisation of a mature codebase without destabilising a production system
• Build robust concurrent code, including multi-threading, locking and interlocking, and parallelism in .NET
• Apply TDD and strengthen automated testing, including tests that touch real hardware
• Conduct code reviews
• Mentor and coach mid-level developers
• Troubleshoot complex issues across the software and hardware boundary

Requirements

• Proficiency in C# and .NET with 3+ years of hands-on, senior-level experience on production systems
• Background in hardware-related development environments — code that has controlled, driven, or read from physical equipment
• Knowledge of object-oriented design, SOLID and design patterns, along with Clean Code principles
• Expertise in Test-Driven Development and ownership of automated test suites
• Skills in multi-threading, locking/interlocking, and parallelism in .NET
• Experience refactoring and modularising a long-lived legacy codebase
• Familiarity with mentoring and conducting code reviews
• English proficiency at B2 level or above
• Nice to have Understanding of real-time systems and deterministic timing
• Competency in hardware integration such as motion control, sensors and actuators, or device drivers and instrument interfaces
• Qualifications in optical sensor data processing, including spectroscopy, interferometry, or imaging and signal processing
• Domain background in semiconductor, metrology, test and measurement, or precision instrumentation, industrial automation, or medical devices
• German language skills