# Principal AI Engineer - Company: [Mitratech]() - Location: UK - Remote - Remote: Yes - Team: Development - Posted: August 11, 2026 ## Job description # **Principal AI Engineer (AI / .NET Core / React)** At Mitratech, we’re a team of engineers passionate about building world-class products that empower Legal, Risk, Compliance, and HR professionals at Fortune 100 companies. We thrive in a global, inclusive culture that values innovation, collaboration, and technical excellence. With continued growth, we’re looking for a **Principal AI Engineer** to join our **HotDocs Team**. HotDocs is Mitratech’s flagship document automation platform, used by enterprise clients worldwide to streamline the assembly of complex legal documents and contracts. ## **You'll set the technical direction for AI at HotDocs - designing and delivering new AI-powered enterprise capabilities and driving our adoption of AI across the software development lifecycle. This is a remote-first role.** ## **About the Role** As a Principal AI Engineer, you will: * **Set the AI Technical Direction:** Own the architecture for AI capabilities across HotDocs - model management, LLM and agent orchestration, retrieval strategy, evaluation, cost and latency management - and translate it into a pragmatic delivery roadmap. * **Deliver Enterprise AI Features:** Take new AI-powered features from prototype to production at enterprise scale, writing clean, maintainable code in .NET Core and React and holding the bar for performance, security, and readability. * **Drive AI Adoption in the SDLC:** Lead how we use AI across engineering - coding assistants, agentic workflows, test generation, code review, and documentation - selecting tooling, defining safe and effective usage patterns, and measuring the impact on delivery. * **Build Trustworthy AI:** Establish evaluation harnesses, guardrails, observability, and AI governance practices so that AI features are accurate, explainable, and safe for use in regulated, compliance-heavy environments. * **Bring Deep Technical Expertise:** Apply strong .NET and React ecosystem knowledge to complex problems, modernize and refactor legacy code where it blocks AI integration, and improve system scalability and reliability. * **Lead and Mentor:** Raise the AI capability of the wider engineering group through code reviews, design reviews, pairing, brown-bag sessions, and clear written guidance. * **Influence Across the Business:** Partner with product management, architecture, security, and customer-facing teams to shape the AI roadmap, evaluate build-versus-buy decisions, and set realistic expectations for what AI can deliver. * **Enhance DevOps and AI Ops:** Extend CI/CD pipelines to cover AI workloads - prompt and model versioning, automated evaluation gates, monitoring, and cost tracking - working closely with DevOps engineers. * **Focus on the User:** Ensure AI features solve real customer problems and deliver a great experience through attention to detail, responsiveness, transparency, and accessibility. ## **About You** You are: * **A Technical Leader:** You set direction without needing authority, build consensus across teams, and communicate clearly with technical and non-technical peers. * **An AI Practitioner, not a Spectator:** You have shipped AI features to real users, keep pace with a fast-moving field, and can tell genuine capability from hype. * **Evidence-Led:** You care about maintainable code, testing, and measurable outcomes - you evaluate AI systems with data rather than intuition. * **Adaptable and Pragmatic:** You balance long-term architectural goals with the practical needs of a sprint-driven environment, and you know when a simple solution beats a model. * **Security-, Privacy- and Performance-Minded**: You build with scalability and resilience in mind, using secure-by-design principles, and you treat data privacy and responsible AI as first-order concerns. ## **Required Skills and Experience** * 12 or more years of professional software development experience, including time in a principal, lead, or staff-level technical role. * Strong skills in **.NET Core (C#)** and **React (TypeScript)** or similar SPA frameworks - this remains a hands-on engineering role. * Demonstrable experience designing and shipping production **AI solutions** - LLM integration, prompt engineering, RAG, MCP, and agentic or tool-calling systems. * Hands-on experience with cloud AI platforms and services (e.g. Azure OpenAI / AI Foundry, or equivalent) and with orchestration frameworks such as Semantic Kernel. * Experience building and maintaining **REST APIs**. * Proficiency with **Entity Framework** and **Azure SQL** (or SQL Server). * Experience evaluating and improving AI system quality - test sets, benchmarking, human review loops, and handling non-deterministic behavior. * Understanding of **web applications** and AI-specific security, including secure coding, prompt injection, and safe handling of sensitive customer data. * Experience using **Git** and collaborating through modern workflows (e.g., pull requests, branching strategies). * Experience with CI/CD pipelines (Azure DevOps or similar). * Comfortable working in agile teams using tools such as Jira and Confluence. * Practical experience using AI tooling within the SDLC (e.g. coding assistants, agentic developer tools) and a view on how to adopt it well across a team. * A track record of technical leadership - mentoring senior engineers, leading design reviews, and influencing roadmap and architecture decisions. ## **Nice to Have** * Deeper AI specialism in areas such as SLMs and fine-tuning, CAG, vector databases, AI observability, multi-agent systems, or AI/ML pipelines. * Experience with Microsoft Office Addins (office.js / VSTO) * Familiarity of .NET Framework / WPF * Experience with authentication standards such as **OAuth** and **SSO**. * Exposure to **distributed caching** (e.g., Redis) * Knowledge of **Linux environments** and **containerization** (Docker). * Scripting in **PowerShell**. * Familiarity with **performance tuning** and application diagnostics. * Experience with **infrastructure-as-code** or automation tooling. * Previous experience in enterprise SaaS or compliance-heavy domains (e.g., legaltech, fintech), particularly applying AI to document, contract, or natural language workloads. ## **What We Offer** * A collaborative, supportive, and learning-focused work culture. * The chance to shape an AI strategy end to end, from architecture through to production, at enterprise scale. * Opportunities to grow your technical skills and career path. * Remote-first flexibility with optional in-person collaboration sessions. * Competitive benefits and a chance to impact how global organizations automate critical legal and compliance workflows. ## **Join Us** Ready to lead the application of AI to document automation at enterprise scale? Apply now to join Mitratech’s innovative, inclusive, and driven HotDocs engineering team. ## Apply [Apply on Mitratech]() Canonical job page: