Principal Software Engineer

Trimble•Lake Oswego, OR

About The Position

Architect the Future: Principal Software Development Engineer (AI Agentic & Full Stack) Are you ready to redefine the enterprise software lifecycle by blending high-level engineering with cutting-edge AI? We are looking for a visionary Principal Engineer to spearhead our transition into an AI-augmented development model. You will lead a dual mission: harnessing agentic AI workflows to modernize our core Vista ERP platform and accelerating the delivery of next-generation features that will empower the global construction industry. About Us: Trimble is a global technology company that connects the physical and digital worlds, transforming the ways work gets done. With relentless innovation in precise positioning, modeling and data analytics, Trimble enables essential industries including construction, geospatial and transportation. Whether it's helping customers build and maintain infrastructure, design and construct buildings, optimize global supply chains or map the world, Trimble is at the forefront, driving productivity and progress. AECO: The Trimble AECO segment provides digital construction solutions that increase precision and productivity for Architecture, Engineering, Construction, and Operations. What Makes This Role Great: In this role, you will be the technical catalyst for a strategic shift in how we build software, moving beyond traditional development to an AI-augmented model. You will have the unique opportunity to architect and implement agentic AI frameworks that directly automate legacy maintenance and eliminate technical debt, ensuring our flagship Vista ERP product remains a market leader in the AECO sector.

Requirements

Experience: 10+ years of relevant technical experience in software engineering.
Leadership: Proven track record of leading complex technical projects and mentoring engineering teams.
AI/LLM Proficiency: Practical experience with Large Language Models (LLMs), prompt engineering, and building agentic frameworks.
Core Tech Stack: Expert knowledge of C# and .NET.
Cloud Infrastructure: Deep experience with Docker, Kubernetes (AKS), and Infrastructure as Code (Terraform, Bicep, or Helm).
Testing Excellence: Mastery of unit testing and mocking frameworks to ensure maintenance quality.
Data & Identity: Advanced experience with SQL, Entity Framework, REST Web APIs, and Identity concepts (IAM, AuthN/AuthZ).

Nice To Haves

Legacy Modernization: Experience using AI tools to assist in the migration or refactoring of legacy monolithic applications to microservices.
Advanced Tooling: Expertise in Azure DevOps, Azure Cloud portal, and GitHub Copilot/AI coding assistants.
Messaging: Experience with high-throughput eventing systems like Kafka or Azure Service Bus.
Domain Knowledge: Familiarity with construction industry accounting or project management software.

Responsibilities

AI-Driven Maintenance: Design and implement agentic AI workflows specifically aimed at automating routine maintenance, refactoring legacy codebases, and identifying architectural improvements within the Vista ERP ecosystem.
Accelerated Development: Utilize AI agents to automate the generation of boilerplate code, documentation, and unit tests, significantly decreasing time-to-market for new feature sets.
Full-Stack Leadership: Lead the development of distributed desktop products, WinForms, .NET Core services in Azure (AKS/Helm), and Blazor web applications with a focus on high-scale reliability and security.
Architectural Stewardship: Modernize existing application architecture by incorporating AI-driven patterns, ensuring the platform remains maintainable and scalable.
Technical Accountability: Establish and enforce high-level coding standards and AI governance, providing accountability for the team to produce consistent, high-quality output.
Strategic Problem Solving: Lead technical whiteboarding and deep-dive sessions to resolve complex maintenance challenges and architect future-proof solutions.
DevSecOps & CI/CD: Oversee the evolution of quality automation (unit, integration, and security scans) and manage sophisticated cloud deployment pipelines.
Mentorship: Act as a technical pillar for the team, guiding junior and mid-level developers in both core .NET engineering and emerging AI technologies.

Benefits

Trimble offers comprehensive core benefits that include Medical, Dental, Vision, Life, Disability, Time off plans and retirement plans.
Most of our businesses also offer tax savings plans for health, dependent care and commuter expenses as well as Paid Parental Leave and Employee Stock Purchase Plan.
If this position is identified above as commission- or bonus-eligible, the terms of the commission plan or discretionary bonus plan for which you are eligible will be provided following the employee start date.

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