Sr. Python Engineer

Sr. Software Engineer, Backend Are you passionate about the chance to bring your experience to a world-class company that is market-leading or both content and technology? If yes, we’re looking for you. The team is seeking a creative backend engineer to join the team behind CoCounsel. You will help build applications that interact with state-of-the-art Large Language Models (LLMs) that deliver cutting-edge and time‑saving solutions to attorneys all around the country. CoCounsel is already capable of writing legal research memos, summarizing and reviewing documents, and red‑lining contracts, just to name a few capabilities--all in minutes, not days or weeks. And we're just getting started. As a Software Engineer, Backend, you will develop the systems that orchestrate our users’ interactions with LLMs, smaller ML models, and other critical services. Working closely with prompt engineers and other subject matter experts in the company, the systems you develop will unlock much of the value presented by LLMs. Our ideal candidate is a dependable backend engineer who is fluent in Python, HTTP APIs, and SQL. About the Role Write Python API server code that handles requests from a front‑end client (or many front‑end clients) Develop novel client code suitable for a high‑volume production environment Orchestrate LLM‑driven experiences that delight our customers Utilize the latest and greatest LLM models and services Empower prompt engineers and other SMEs by developing intuitive prompting frameworks. Write SQL queries and occasionally design schema Participate in and contribute to high level architecture discussions within the Backend/Prompting team and across other team About You At least four years of production level experience in software engineering on an engineering/product team. Strong Python, HTTP API, and SQL skills are required. Preferred Experience using large language models through code (such as model services from OpenAI, Anthropic, or Cohere; and/or open source models such as Llama and Mistral). Ability to work both independently and in a collaborative environment. #LI-DD3 What’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 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 Us Thomson 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 here. Learn more on how to protect yourself from fraudulent job postings here. More information about Thomson Reuters can be found on thomsonreuters.com #J-18808-Ljbffr