Senior .NET Developer – Systems Modernization & AI Evolution

Company Overview At Motorola Solutions, we believe that everything starts with our people. We’re a global close-knit community, united by the relentless pursuit to help keep people safer everywhere. Our critical communications, video security and command center technologies support public safety agencies and enterprises alike, enabling the coordination that’s critical for safer communities, safer schools, safer hospitals and safer businesses. Connect with a career that matters, and help us build a safer future. Department Overview Our team manages the mission-critical lifecycle of TETRA device fleets, where system reliability is paramount. We are currently evolving our core product from a robust, legacy foundation into a next-generation platform integrated with AI technologies. We are looking for a Senior .NET Developer who enjoys the challenge of deep-system discovery and wants to play a key role in our modernization journey. You won't just be maintaining code; you will be the team’s go-to expert for bridging the gap between our established legacy logic and the future of AI-assisted development. Job Description Understand legacy .NET/Java codebase to identify core business logic and provide expert advice on the most efficient paths for modernization. Serve as the team’s technical advisor on AI-SDLC (AI-driven software development lifecycle) and assist in prototyping new product features using Agentic and Edge-AI technologies. Work closely with the leadership team to offer technical feasibility assessments for our new products roadmap. Share your expertise in modern .NET Core, cybersecurity standards, and AI-powered tools (like Copilot or Codeium) with a team of 20 engineers. Team work on daily basis with Co-pilot & Qodo assistants, along with whole Gemini Pro suite (closed to MSI) The position requires availability to work from the office 2 days per week. Basic Requirements Senior-Level Experience: 7+ years in professional software development, with a proven track record of staying hands-on with complex systems. Strong experience (or a high level of comfort) working within large, complex legacy environments. You should be someone who views "old code" as a puzzle to solve rather than a burden. Mastery of C# and .NET Framework / .NET Core. You must be able to comfortably read and navigate Java legacy components. Practical experience using AI-powered development assistants and a strong interest in how LLMs/Agentic structures can be integrated into production software. Solid understanding of modern security protocols and a commitment to building long-lasting, maintainable codebases. Excellent ability to deconstruct complex systems and provide clear, actionable advice on architectural improvements. Nice-to-Have Requirements Familiarity with incremental migration and modernization strategies (e.g., the "Strangler Fig" pattern). Experience with AI/ML experimentation or integrating AI APIs / MCPs / RAGs Knowledge of Atlassian toolset (Jenkins, CI/CD pipelines, Jira, Confluence). Ability to explain complex technical transitions to both technical and non-technical stakeholders. In return for your expertise, we’ll support you in this new challenge with coaching & development every step of the way. Also, to reward your work you’ll get the following: Contract of Employment (UoP) Private medical coverage, Multisport Life insurance (two annual income), Employee Stock Purchase Plan – 15% discount for buying Motorola’s Stock units, Employee Pension Plan – 3,5 % of the month’s salary gross, which goes to the retirement account IP Tax Relief (up to 50%) Yearly salary increase (depends on individual performance) Yearly bonus (depends on company performance) Flexible working hours (usually day starts between 7-10), 8 hours working day (30 minutes lunch break included). In return for your expertise, we’ll support you in this new challenge with coaching & development every step of the way. Also, to reward your work you’ll get the following: Private medical coverage, Multisport Life insurance (two annual income), Employee Stock Purchase Plan – 15% discount for buying Motorola’s Stock units, Employee Pension Plan – 3,5 % of the month’s gross salary, which goes to the retirement account IP Tax Relief (up to 80%) Yearly salary increase (depends on individual performance) Yearly bonus (depends on company performance) Flexible working hours (usually day starts between 7-10), 8 hours working day (30 minutes lunch break included) Travel Requirements None Relocation Provided None Position Type Experienced Referral Payment Plan Yes Company Motorola Solutions Systems Polska Sp.z.o.o EEO Statement Motorola Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion or belief, sex, sexual orientation, gender identity, national origin, disability, veteran status or any other legally-protected characteristic. We are proud of our people-first and community-focused culture, empowering every Motorolan to be their most authentic self and to do their best work to deliver on the promise of a safer world. If you’d like to join our team but feel that you don’t quite meet all of the preferred skills, we’d still love to hear why you think you’d be a great addition to our team.