Lead Software Engineer – Python/React

Thomson Reuters•Frisco, TX

2d•$118,400 - $253,000•Hybrid

About The Position

This role is heavily backend focused (roughly 70% backend / 30% frontend). We are specifically looking for engineers who have built and shipped real products end-to-end, not just contributed small features within large organizations. Strong preference for candidates with: Hands-on ownership building production products from 0→1 Python backend depth (FastAPI/Django/APIs/microservices) Scalable distributed systems Product engineering mindset Customer-facing feature ownership React/TypeScript capability to support full-stack delivery Startup or greenfield experience Engineers who can independently design, build, and deliver systems in production Frontend experience is required, but this is NOT a frontend-heavy/UI-focused role. We need backend-first engineers who can also contribute across the stack when needed. Are you excited about building AI-driven software that redefines how professionals work? Have you built scalable Python backend systems that power customer-facing products? Join a dynamic and highly skilled team at Thomson Reuters, where we combine the agility and innovation of a startup with the stability and resources of a global leader. As a Lead Product Engineer, you will play a pivotal role in designing and building the backend services and APIs that power AI-driven accounting workflows, while contributing across the full stack to rapidly iterate on features, drive user engagement, and optimize outcomes through data-driven experimentation. Innovate in a Startup-Like Environment Be part of a fast-moving, forward-thinking group that is creating AI-driven software for accounting professionals. You'll join a team of top engineers and AI developers, leveraging cutting-edge technology to build intelligent and scalable systems. This role is for the CoCounsel for Accounting team, formed from the recent acquisition of the startup Materia. Create Impactful, AI-Driven Experiences Lead backend-driven full stack initiatives — from Python-based AI services and APIs to the React interfaces that bring them to life. You'll architect and implement complete features that deliver generative AI capabilities, alongside core product systems that streamline and modernize accounting workflows. Building the intelligent backend systems and connecting them to polished user experiences, your work will shape how thousands of accounting professionals leverage AI and modern software in their everyday workflows. Collaborate Across Functions Work closely with product managers, designers, and AI specialists to deliver elegant, high-performance features. Your ability to translate complex requirements into robust solutions — scalable APIs and services complemented by polished interfaces — will be key to our product's success. About the Role: In this role as a Lead Product Engineer, you will work on a backend-leaning full stack team building customer-facing product features. This role is a backend-leaning full stack position. The team is looking for engineers with strong Python backend experience who have worked on customer-facing product systems. While the role involves both backend and frontend development, the primary focus is building scalable backend services and APIs that power product features. Candidates should have strong experience building backend systems using Python frameworks such as FastAPI, Flask, or Django, and be comfortable designing APIs and services that operate at scale. On the frontend side, the team works with modern frameworks including React, Next.js, and TypeScript, so candidates should be comfortable contributing across the stack and connecting frontend interfaces to backend services. The ideal candidate has a product mindset, enjoys shipping features end-to-end, and works closely with product managers, designers, and engineering teams to deliver high-quality user experiences. While the role is full stack, deep backend expertise in Python is the priority, with the ability to contribute to frontend development when needed.

Requirements

7+ years building web applications at scale, with deep experience in backend development and practical front-end skills (we're looking for backend-strong engineers who can work across the full stack)
Strong proficiency in Python and backend frameworks (FastAPI, Flask, or Django), with experience designing APIs and services that operate at scale
Comfortable contributing to front-end development with React, Next.js, and TypeScript
Appreciation for good UI/UX and product design — you care about the end-user experience even when your primary focus is backend systems
Self-driven with a proactive approach to problem-solving and prioritization
Experience building new products or features from 0 to 1 or from ideation to release
Excellent debugging skills and an eye for performance optimization
Strong leadership and cross-functional collaboration abilities

Nice To Haves

Bachelor's degree in Computer Science or related field
Experience working in a startup or similar fast-paced setting
Experience building AI-native products, chatbot interfaces, or API-driven platforms
Familiarity with large language models (LLMs), AI agent design, and/or prompt engineering
Experience with cloud infrastructure, event-driven architectures, or observability tooling
Opinionated about testing methodologies, A/B testing, and safe rollouts

Responsibilities

Develop, design, and build the backend services powering generative AI products such as Conversations, Accounting Research, Ready to Advise, and Workspaces
Develop robust backend systems with Python, FastAPI, Pydantic, and cloud infrastructure, including API design, data modeling, system architecture, and AI service integration
Own complex, 6+ month projects from beginning to end, including ideation, working with cross-functional partners in product and UX, testing, launching, measuring impact, and iteration
Contribute to front-end development using Next.js, TypeScript, and Tailwind CSS to connect interfaces to backend services
Identify bottlenecks and optimize for speed, scalability, and responsiveness across the full stack
Serve as a technical leader for backend-driven projects through making prioritization decisions, scoping out timelines, guiding the work of engineers, and collaborating with cross-functional partners
Contribute to technical design decisions across the stack, including architecture, API design, and system integration patterns
Set and enforce team-wide frameworks, best practices, and code quality standards for both backend and frontend development
Mentor and develop junior and mid-level engineers through code reviews, technical guidance, and career development
Establish and maintain high engineering standards for code quality, testing, and architecture
Lead by example in technical excellence, delivery accountability, and collaborative problem-solving
Drive high standards for backend reliability, API design, and system performance
Apply strong product sensibilities to deliver polished, accessible, and user-centric experiences
Proactively collect feedback from end users and internal stakeholders, and iterate accordingly

Benefits

Flexible vacation
Two company-wide Mental Health Days off
Access to the Headspace app
Retirement savings
Tuition reimbursement
Employee incentive programs
Resources for mental, physical, and financial wellbeing
Hybrid Work Model (2-3 days a week in the office depending on the role)
Flex My Way (supportive workplace policies designed to help manage personal and professional responsibilities)
Work from anywhere for up to 8 weeks per year
Grow My Way programming
Market competitive health, dental, vision, disability, and life insurance programs
Competitive 401k plan with company match
Competitive vacation, sick and safe paid time off
Paid holidays (including two company mental health days off)
Parental leave
Sabbatical leave
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
Access to Employee Stock Purchase Plan
Two paid volunteer days off annually
Opportunities to get involved with pro-bono consulting projects and Environmental, Social, and Governance (ESG) initiatives