Python Software Developer jobs in Switzerland

This posting is for proactive recruitment purposes and may be used to fill current openings or future vacancies within our organization.

Are you ready to shape the future of AI‑driven tax automation? We're looking for a Senior AI Engineer to build and scale intelligent workflows using modern LLM/ML tooling. Your work will directly impact how tax professionals automate complex, high‑stakes processes and access critical information.

You'll join our Tax and Accounting Professionals 1040 Scan product engineering team and own the design, implementation, and optimization of AI‑powered tax workflows—from data ingestion to production deployment.

1040SCAN is the market‑leading scan‑and‑populate engine in the 1040 workflow, organizing workpapers, extracting data, and exporting to tax software at scale. As a Senior AI engineer, you will modernize the AI that powers document understanding, extraction, and verification—expanding coverage and accuracy while reducing human effort.

As a Lead/Staff Software Engineer AI, you will:

• Advance document intelligence: Build generalizable models for tax documents (standard and non‑standard) using CV/NLP/LLMs and embeddings to move beyond fixed OCR templates with dynamic, context‑aware parsing.
• Boost auto‑verification & quality: Improve native‑PDF/text‑layer matching, anomaly detection, and prior‑year‑aware checks to catch issues before human review; design human‑in‑the‑loop flows that preserve practitioner control.
• Scale the pipeline: Productionize low‑latency training/inference pipelines over millions of documents with robust observability, evaluation, and drift monitoring.
• Integrate LLMs and traditional ML models into robust, auditable workflows that support tax determination, document processing, and rules‑based automation.
• Build and maintain data pipelines, feature extraction, and preprocessing for tax‑relevant data (e.g., invoices, filings, transactional data).
• Develop and integrate RESTful APIs / microservices to expose AI capabilities to internal and external systems.
• Ensure solutions meet compliance, security, and auditability requirements typical of tax and regulated domains.
• You’ll collaborate across SurePrep engineering and other Thomson Reuters product & engineering teams leveraging TR’s AI platforms including Materia and Additive to deliver reliable, auditable AI in production.

You’re a fit for the role of Lead/Staff Software Engineer, AI if your background includes:

• 5+ years in applied ML/AI(or 5+ with an advanced degree) delivering production systems in document AI/OCR/NLP or information extraction at scale.
• Strong Python and deep learning expertise(PyTorch/TensorFlow), with experience in LLMs, embeddings/vector search, prompt design/evaluation, and statistical methods for quality and uncertainty.
• Cloud‑native ML ops experience: training/inference pipelines, feature/data stores, observability, cost/perf optimization.
• Own end‑to‑end lifecycle for AI features: design → implementation → testing → deployment → monitoring → iteration.
• Optimize model/workflow inference for latency, throughput, and cost, including caching, batching, and model selection strategies.
• Implement monitoring, logging, tracing, and alerting for workflows and models in production (data drift, model performance, error rates).
• Debug and troubleshoot complex AI systems in production, including prompt failures, integration bugs, and data quality issues.
• Partner with Product, Tax SMEs, and other engineering teams to translate business/tax requirements into AI workflows.
• Collaborate with data scientists and ML engineers on model selection, evaluation, and experimentation within Reducto pipelines.
• Lead design reviews, perform code reviews, and mentor mid‑level/junior engineers on AI best practices and production‑grade coding.
• Contribute to internal standards, best practices, and templates for building AI workflows with Reducto.
• You've builtend‑to‑end AI featuresthat are running in production, not just prototypes.
• You can take a vague tax/business requirement and turn it into a concrete, testable workflow design.
• You care aboutrobustness and correctnessas much as cleverness—especially in domains where errors have financial or compliance impact.
• You're comfortable reading tax/business rules and working with domain experts, even if you're not a tax specialist yourself.

• Document AI background: layout parsing, table extraction, doc‑type classification, native‑PDF matching, and verification automation.
• Agentic/LLM orchestration experience: familiarity with TR AI platforms such as Materia and Additive; retrieval‑augmented and tool‑use patterns; evaluation and guardrails.
• Modern Development Practices: Hands‑on with modern AI coding assistants including Claude Code, Cline, and GitHub Copilot for rapid prototyping, code generation, and workflow automation.
• Version control: Experience with version control (Git), testing frameworks (pytest or similar), and modern DevOps practices.
• Software Engineering: Familiarity with C#, Java or any other programming language
• Domain familiarity: exposure to tax/financial document workflows or other regulated content systems is a plus.

#LI-GK1

• 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.

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.

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More information about Thomson Reuters can be found on thomsonreuters.com