Principal Engineer

Thomson Reuters Corp.; Northern (KY); Hybrid; USD 159,000 - 295,000; Full time

Benefits offered by this job

Hybrid work model

Mental Health Days

401k with company match

Job summary

Thomson Reuters Corp. is seeking a Principal Engineer to lead AI-driven, scalable tax and accounting software across multiple US sites, including Eagan, Frisco, and Ann Arbor. Hybrid work arrangement with a focus on delivering modern cloud-native solutions.

You will guide engineering standards, mentor teams, and drive AI-powered product features while collaborating with stakeholders across the organization to ensure reliability and performance.

Qualifications

• Bachelor’s or Master’s degree in Computer Science or related field.
• Strong Computer Science fundamentals in data structures and algorithms.
• Proven experience with ASP.NET or similar REST API frameworks; API gateways a plus.

Responsibilities

• Provide technical leadership & mentoring across engineers.
• Define AI vision and strategy for product features and expansions.
• Drive continuous learning and development within the team.
• Establish and enforce technical governance standards and patterns.
• Develop the technical roadmap for the product line and cloud stack.
• Lead design reviews ensuring scalability and performance.
• Represent the company as a technical expert in industry forums.

Skills

Software engineering

.NET stack

OO design

API design

UI frameworks

AI/GenAI familiarity

Cloud AWS

DevOps practices

Mentoring

Communication

Education

Bachelor’s or Master’s in CS

Tools

React

Angular

TypeScript

Node.js

Python

SQL/DB design

Job description

## Principal EngineerApply: Hybrid: United States of America, Eagan, Minnesota: United States of America, Frisco, Texas: United States of America, Ann Arbor, Michigan: Full time: Posted Yesterday: End Date: December 7, 2026 (30+ days left to apply): JREQ204118**Job Description** Are you inspired by the opportunity to shape the future of AI-driven technology and lead the development of the next generation of high-performance, scalable, reliable, and resilient tax and accounting software ecosystems? At Thomson Reuters, we invite you to join our Tax and Accounting team as we set the technical direction for our US tax compliance solutions. In this role, you will play a key part in delivering innovative, user-focused products that transform the tax compliance landscape and drive meaningful impact for our clients. **Key Responsibilities*** Technical Leadership: Serve as a technical leader within the organization, providing guidance, mentoring, and direction to software engineers at all levels. You provide strategic direction, set engineering and technical standards, and drive innovation across multiple projects or domains.* AI vision and Strategy: Collaborate to identify opportunities for new AI-powered product features, enhancements, and product expansions to differentiate our products from competitors. Identify opportunities for innovation, assess emerging technologies and proactively apply them in our product.* Continuous Learning and Development: Foster a culture of continuous learning and development within the engineering team. You encourage skill-building initiatives and lead by example by staying abreast of industry trends, emerging technologies, and best practices.* Technical Governance: Establish and enforce technical governance standards, including coding standards, design patterns, and development methodologies. You ensure consistency, quality, and scalability across projects and team* Development of the technical roadmap, outlining the future direction of the product line’s technology stack, infrastructure, and development processes. Assess technology risks, evaluate trade-offs, and make informed decisions that align with the company's long-term goals. Communicate technical concepts and decisions clearly to both technical and non-technical stakeholders. Lead design reviews to ensure proposed solutions meet scalability, performance, and maintainability requirements* Problem Solving and Troubleshooting: When complex technical issues arise, principal engineers provide leadership in troubleshooting and resolving them. You leverage your expertise to diagnose problems, propose solutions, and guide the team towards resolution. Effective communication and documentation are essential aspects of the role.* Thought Leadership: Represent the company as technical expert in industry forums, conferences, and events. You provide thought leadership and guide the business to evolve our products in the modern AI landscape and share insights on emerging trends and best practices. **Required Qualifications*** 10+ years of hands-on software engineering experience with a proven record of developing scalable and resilient web-based products and solutions. Bachelor’s or Master’s degree in Computer Science or related field.* Strong Computer Science fundamentals in Data Structures and algorithm design. Strong programming experience with .Net stack. You will need to have strong object-oriented design and development skills. You possess a solid understanding of object-oriented programming, SOLID, DRY, DDD and core database design principles.* Proven track record in applying architecture and design patterns to solve complex business problems* Demonstrated experience in designing and developing customer facing high traffic and performant REST APIs using ASP.Net or similar frameworks; experience with API gateways is a plus.* Expertise with modern UI frameworks (React, Angular, or similar), TypeScript, Node.js, and Python.* Experience with AI technologies, including GenAI concepts such as prompt engineering, retrieval-augmented generation (RAG), and fine-tuning.* Experience working with public cloud infrastructure preferably AWS (EC2, S3, ALB, Auto Scaling, RDS, Lambda function, SQS, Containers).* Excellent interpersonal and communication skills, with the ability to influence across organizational boundaries and to navigate ambiguity, make data-driven decisions, and deliver results in a fast-paced environment.* Demonstrated ability to mentor others and promote best practices in devops practices, AI dev tools, and test-driven development.* Willingness to learn and support our legacy codebase while the transition to our next generation is occurring. Proven track record of modernizing highly complex legacy web application to cloud native solution. **Preferred Qualifications*** Experience building or integrating production AI/ML, Generative AI, LLM, RAG, or intelligent automation capabilities into customer-facing products.* Experience with AI technologies, including GenAI concepts such as prompt engineering, retrieval-augmented generation (RAG), and fine-tuning.* Experience modernizing highly complex legacy web applications into cloud-native solutions.* Experience working with AI developer tools and test-driven development.* Experience supporting or developing regulated, high-availability, or business-critical production systems.* Experience operating in environments with strong reliability, performance, security, compliance, and SLA requirements.* Experience providing technical leadership across multiple engineering teams and cross-functional stakeholders. #LI-ES1 **What’s in it For You?*** **Hybrid Work Model:** We’ve adopted a flexible hybrid working environment for our office-based roles while delivering a seamless experience that is digitally and physically connected.* **Flexibility & Work-Life Balance:** Flex My Way is a set of supportive workplace policies designed to help manage personal and professional responsibilities, whether caring for family, giving back to the community, or finding time to refresh and reset. This builds upon our flexible work arrangements, including work from anywhere for up to 8 weeks per year, empowering employees to achieve a better work-life balance.* **Career Development and Growth:** By fostering a culture of continuous learning and skill development, we prepare our talent to tackle tomorrow’s challenges and deliver real-world solutions. Our Grow My Way programming and skills-first approach ensures you have the tools and knowledge to grow, lead, and thrive in an AI-enabled future.* **Industry Competitive Benefits:** We offer comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing.* **Culture:** Globally recognized, award-winning reputation for inclusion and belonging, flexibility, work-life balance, and more. We live by our values: Obsess over our Customers, Compete to Win, Challenge (Y)our Thinking, Act Fast / Learn Fast, and Stronger Together.* **Social Impact:** Make an impact in your community with our Social Impact Institute. We offer employees two paid volunteer days off annually and opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives.* **Making a Real-World Impact:** We are one of the few companies globally that helps its customers pursue justice, truth, and transparency. Together, with the professionals and institutions we serve, we help uphold the rule of law, turn the wheels of commerce, catch bad actors, report the facts, and provide trusted, unbiased information to people all over the world. In the United States, Thomson Reuters offers a comprehensive benefits package to our employees. Our benefit package includes market competitive health, dental, vision, disability, and life insurance programs, as well as a competitive 401k plan with company match. In addition, Thomson Reuters offers market leading work life benefits with competitive vacation, sick and safe paid time off, paid holidays (including two company mental health days off), parental leave, sabbatical leave. These benefits meet or exceeds the requirements of paid time off in accordance with any applicable state or municipal laws. Finally, Thomson Reuters offers the following additional benefits: optional hospital, accident and sickness insurance paid 100% by the employee; optional life and AD&D insurance paid 100% by the employee; Flexible Spending and Health Savings Accounts; fitness reimbursement; access to Employee Assistance Program; Group Legal Identity Theft Protection benefit paid 100% by employee; access to 529 Plan; commuter benefits; Adoption & Surrogacy Assistance; Tuition Reimbursement; and access to Employee Stock Purchase Plan.Thomson Reuters complies with local laws that require upfront disclosure of the expected pay range for a position. The base compensation range varies across locations.For any eligible US locations, unless otherwise noted, the base compensation range for this role is $158,900 USD - $295,100 USD.Base pay is positioned within the range based on several factors including an individual’s knowledge, skills and experience with consideration given to internal equity. Base pay is one part of a comprehensive Total Reward program which also includes flexible and supportive benefits and other wellbeing programs.This role may also be eligible for an Annual Bonus based on a combination of enterprise and individual performance.