Senior Software Engineer (.NET / Embedded)

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 destabilizing 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

Benefits

We gather like-minded people:

• Top tech minds driving innovation in AI, cloud and digital platform modernization
• Supportive team and agile, startup-like culture
• Hybrid by design mode and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities

We provide growth opportunities:

• Career development programs
• Thought leadership, mentoring, soft skills and well-being programs
• Certification (Anthropic, Gemini, GCP, Azure, AWS)
• English classes

We cover it all:

• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
• Corporate, social and well-being events

Please, note:

• Benefits listed above are available to employees only
• We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
• We will reach out to selected candidates exclusively