Case studies

What I built, and what changed

Projects from my roles at Tieto, OP and RELEX: the problem, the Azure architecture, what I built and the result. Each one names the employer it came from; details that are not public are left out.

  1. 01 · AI + Security · Tieto, Since 2025

    Turning security findings into work AI agents can act on

    A multi-tenant security platform that brings recommendations from multiple healthcare customers into one place while keeping every tenant’s data isolated. Microsoft Foundry agents help identify risks and support remediation without crossing customer boundaries.

    Microsoft Foundry · AI agents · Azure · Multi-tenancy · Security · Identity · Enterprise AI

  2. 02 · AI Platform · Tieto, Since 2025

    One gateway in front of every model

    Instead of letting every application connect directly to an LLM, I built a secure AI gateway that gives teams one governed entry point for model access, routing and observability.

    LiteLLM · Langfuse · LLMs · AI gateway · Observability · Model routing · Enterprise AI

  3. 03 · Platform Engineering · OP, 2024–2025

    Azure without the platform-team ticket

    During an enterprise-wide Azure migration, I built reusable Terraform patterns and a self-service platform that let application teams provision Azure resources without waiting on the central cloud team.

    Azure · Terraform · GitHub Actions · Platform engineering · Developer experience · Self-service infrastructure

  4. 04 · FinOps · RELEX Solutions, 2022–2024

    Finding 30% in the Azure bill

    On RELEX’s central cloud platform team, I led the FinOps work across the company’s Azure estate: finding where the money went, fixing what was wasted, and putting governance in place so the savings lasted. Cloud expenses went down by 30%.

    30% lower cloud costs

    Azure · FinOps · Cost optimization · Cloud governance · Terraform · FinOps Certified Engineer

Other outcomes

  • 90% less manual access work: Entra ID access automation at RELEX (RELEX Solutions)
  • 40% faster legacy applications: Performance work at TCS (Tata Consultancy Services)
  • Azure migrations: On-premises to IaaS and PaaS at LTIMindtree
  • Databricks modernization: Data Factory workloads moved to Databricks at Tieto
  • MCP integrations: GitHub Copilot with customer context at Tieto

More about the person behind them: About Sanket Joshi.