Senior Software Engineer, AI

Thomson Reuters

  • Toronto, ON
  • Permanent
  • Full-time
  • 14 days ago
Senior Software Engineer, AI - Westlaw AIWe are looking for a highly motivated and experienced Senior Software Engineer to become part of our dynamic and innovative team focused on developing content centric AI-driven solutions for legal professionals, including our flagship product, Westlaw. In this role, you will be responsible for designing and developing both user interfaces and backend services using a micro-frontend architecture. You will utilize technologies such as Java, React/Angular, Python, REST APIs, and AWS cloud infrastructure to deliver cutting-edge solutions. If you love coding, join us to make a significant impact in the legal tech industry with your expertise and creativity.About the Role:
In this role as a Senior Software Engineer - AI, you will:
  • Innovate, implement and operationalize in a fast-paced Environment
  • Be part of a fast-moving, forward-thinking group that is creating AI-driven software for legal professionals. You’ll work with top AI and software development experts, leveraging cutting-edge technology to build intelligent and scalable systems. This role is for the developing backend services for Legal Research products.
  • Design and implement backend services that power generative AI agents and orchestration systems. This role requires both creativity and rigor to ensure our AI-driven solutions are performant, reliable, and adaptable to real-world use cases.
  • Work closely with AI/ML engineers from TR Labs, frontend developers from Westlaw UI teams, product managers, and designers to build robust services that support generative AI experiences. Help to build out our core AI interfaces such as Conversations, Workspaces, Grid, and Knowledge Base.
Key Responsibilities:Backend Development & AI Integration
  • Develop and maintain backend services using Python, FastAPI, and PostgreSQL.
  • Implement AI orchestration systems integrating LLMs from OpenAI, Anthropic, and other providers.
  • Design APIs and backend logic for real-time AI interactions.
  • Help to build our content services to automate many different AI driven workflows across the legal professional domain
Performance & Scalability
  • Ensure backend systems are secure, scalable, and optimized for AI-driven applications.
  • Monitor and enhance system performance, across millions of documents and AI driven interactions
Collaboration & Leadership
  • Work closely with AI researchers, engineers, and product teams to translate AI capabilities into real-world applications.
  • Foster a culture of experimentation and continuous improvement, exploring new AI technologies and methodologies.
  • Work closely with AI researchers, engineers, and product teams to translate AI capabilities into real-world applications.
  • Foster a culture of experimentation and continuous improvement, exploring new AI technologies and methodologies.
About You:You’re a fit for the role of Senior Software Engineer - AI, if your background includes:
  • Bachelors Degree in Computer Science, Computer Engineering, Related Field, or Equivalent Experience.
  • 5+ years of hands-on software development experience in backend development, building scalable web services, and APIs.
  • 3+ years of hands-on Python development with experience in FastAPI (Other API Tools Acceptable) and PostgreSQL (Other SQL Tools Acceptable).
  • Expertise in AWS cloud services (Redis, DynamoDB, S3, SQS, Kinesis, KMS, IAM, Secret Manager, etc) or similar cloud services.
  • Experience managing infrastructure with Terraform, CloudFormation, or similar IaC tooling.
  • Strong Data Engineering background and experience with Retrieval Systems leveraging tools like OpenSearch.
  • Experience implementing modern DevOps best practices in production environments (CI/CD using GitHub Actions and AWS services (Code Pipeline/Code Build)
  • Experience with LLMs, AI Solutions, and evaluation and understanding of agentic systems and workflow
  • Excellent interpersonal skills with the ability to influence across organizational boundaries
  • A pragmatic and curious mindset that drives you to find elegant solutions to complex problems
  • Strong communication skills that enable you to articulate technical concepts to diverse audience
  • Experience in using AI-powered tools in SDLC is required.
#LI-JF1What’s in it For You?Hybrid Work Model: We’ve adopted a flexible hybrid working environment (2-3 days a week in the office depending on the role) 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.About UsThomson Reuters informs the way forward by bringing together the trusted content and technology that people and organizations need to make the right decisions. We serve professionals across legal, tax, accounting, compliance, government, and media. Our products combine highly specialized software and insights to empower professionals with the data, intelligence, and solutions needed to make informed decisions, and to help institutions in their pursuit of justice, truth, and transparency. Reuters, part of Thomson Reuters, is a world leading provider of trusted journalism and news.We are powered by the talents of 26,000 employees across more than 70 countries, where everyone has a chance to contribute and grow professionally in flexible work environments. At a time when objectivity, accuracy, fairness, and transparency are under attack, we consider it our duty to pursue them. Sound exciting? Join us and help shape the industries that move society forward.As a global business, we rely on the unique backgrounds, perspectives, and experiences of all employees to deliver on our business goals. To ensure we can do that, we seek talented, qualified employees in all our operations around the world regardless of race, color, sex/gender, including pregnancy, gender identity and expression, national origin, religion, sexual orientation, disability, age, marital status, citizen status, veteran status, or any other protected classification under applicable law. Thomson Reuters is proud to be an Equal Employment Opportunity Employer providing a drug-free workplace.We also make reasonable accommodations for qualified individuals with disabilities and for sincerely held religious beliefs in accordance with applicable law. More information on requesting an accommodation .Learn more on how to protect yourself from fraudulent job postings .More information about Thomson Reuters can be found on

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