Principal AI Engineer
🏢 Mitratech · all Mitratech jobs
📍 Remote · United Kingdom
📅 Posted 2026-08-11 · via FourDayWeek
🏷 engineering,azure-sql,csharp,net-core,react,sql,typescript
Apply on original site ↗## 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.