Principal Software Engineer – AI Platform & Architecture
Thomson Reuters1 day ago
Base Salary
$183k - $340k/yr
Responsibilities
- Own the architecture, system design, and AI strategy for Cloud Audit Suite and integrations with Confirmation and CoCounsel Audit.
- Lead cross-product integrations using MCP servers, shared APIs, tools, and agent-to-agent integrations.
- Design and build AI-first backend services and orchestration for agents, workflows, tool calling, guardrails, error handling, and third-party LLMs.
- Design for high-throughput and low-latency AI workloads, including caching, queuing, rate limiting, model failover, and cost/performance tradeoffs.
- Lead multi-quarter initiatives across engineering, product, AI Labs, UX, infrastructure, and operations teams.
- Mentor staff and senior engineers and raise standards for architecture, code quality, testing, rollout, support, and AI-native engineering.
- Establish and refine SLOs, observability, reliability, compliance, performance, and incident response for AI systems.
- Work with large-scale document data, retrieval and search, vector stores, and indexing strategies for tax, accounting, and audit workflows.
Requirements
- Bachelor’s degree in Computer Science, Computer Engineering, a related field, or equivalent experience.
- 8–10+ years of full-stack application development experience, including hands-on architecture and design leadership for large-scale systems.
- Expertise in C# and .NET, with production experience using ASP.NET Core or similar frameworks, relational databases, and a major cloud provider.
- Experience using Python in AI/ML system development, including model integration, data pipelines, or API-based orchestration.
- Experience with actor model patterns and frameworks such as Orleans or Akka.
- Experience architecting accessible front-end solutions using JavaScript, TypeScript, HTML, CSS, and modern frameworks such as Angular or React.
- Experience with AI systems, LLMs, agents, retrieval, guardrails, and AI-native engineering practices.
- Strong background in distributed systems, cross-system integration, data modeling, API contracts, observability, resilience, and performance tuning.
- Proven ownership of complex projects from architecture and execution through rollout, support, and maintenance.
- Strong communication and cross-functional collaboration skills.
- Preferred experience with CI/CD pipelines such as GitHub Actions.
- Preferred experience integrating OpenAI or Anthropic LLM APIs into production applications, including prompt and response management, cost controls, and safety considerations.
- Preferred experience with vector databases, embeddings, semantic search, custom retrieval pipelines, automated testing, reliability, and release practices for nondeterministic models.
- Customer interaction experience and experience in domains where correctness, auditability, and compliance matter are preferred.
Benefits
- Flexible hybrid work model for office-based roles.
- Ability to work from anywhere for up to 8 weeks per year, along with flexible work-life policies.
- Career development, continuous learning, skills development, and Grow My Way programming.
- Comprehensive benefits including flexible vacation, two company-wide Mental Health Days, Headspace access, retirement savings, tuition reimbursement, incentive programs, and wellbeing resources.
- US benefits include health, dental, vision, disability, life insurance, 401(k) with company match, paid holidays, parental leave, sabbatical leave, commuter benefits, adoption and surrogacy assistance, and employee stock purchase plan.
- Two paid volunteer days annually and opportunities for pro-bono consulting and ESG initiatives.
- Eligible office locations include New York City, San Francisco, Los Angeles, Irvine, McLean, and Washington, DC.
Tech Stack
AngularAWSAzureC#CSSFastAPIGitHub ActionsHTMLJavaScriptMicrosoft SQL Server.NETPostgreSQLPythonReactTypeScriptVercel
Categories
About Thomson Reuters
Thomson Reuters builds research platforms, workflow software, and data services for legal, tax and accounting, compliance, and government professionals, and operates the Reuters global news service. Flagship products include Westlaw for legal research and ONESOURCE and Checkpoint for tax and accounting, sold primarily via subscriptions and enterprise licenses. A public company headquartered in Toronto, it was formed in 2008 by combining Thomson Corporation and Reuters Group and is listed on the TSX and Nasdaq as TRI.