**Join us at Entrust ** At Entrust, we're shaping the future of identity centric security solutions. From our comprehensive portfolio of solutions to our flexible, global workplace, we empower careers, foster collaboration, and build solutions that help keep the world moving safely.  **Get to Know Us ** Headquartered in Minnesota, Entrust is an industry leader in identity-centric security solutions, serving over 150 countries with cutting-edge, scalable technologies. But our secret weapon? Our people. It's the curiosity, dedication, and innovation that drive our success and help us anticipate the future.  **Position Overview** **:** The Instant Financial Issuance as a Service (IFIaaS) Cloud Service consists of various components, such as web services, application servers, and databases, all hosted in an on-premises environment. We are seeking a Senior Platform Architect who is **hands** **-** **on** and deeply **involved in the design and evolution of a modern,** **on** **premises** **SaaS platform** . The platform is built using distributed microservices, runs primarily on VMwarehosted Windows workloads, and is transitioning toward containerized architectures. This role focuses on designing and validating systems that meet strict requirements for availability (99.9%), scalability, performance, and security. In this role, you will work directly with **engineering** , **infrastructure** , and the CloudOps team to design **p** **latform** **architecture** **,** define **deployment patterns** , and solve **complex** **system** **-** **level** **challenges.** You will actively participate in **architectural design sessions** , review and influence implementation details, and help **troubleshoot and remediate systemic issues** in production environments. The Senior Platform Architect is expected to deeply understand how the platform is built and operated, and to apply that knowledge to improve reliability, resilience, and long-term maintainability of the system. This role is ideal for an architect who enjoys staying close to technology, contributing to real design decisions, and shaping how distributed systems are built and run in a modern onprem environment. **Responsibilities:** + Own the **availability architecture** across compute, network, storage, data, and app tiers to exceed **99.9%** service availability + Design **fault domains** (host, rack, cluster, site) and enforce placement strategies to ensure resilience and predictable failure behaviorand **blast radius** limits + Eliminate **single points of failure** across compute, storage, networking, ingress, identity, secrets, and CI/CD pipelines. + Design **graceful degradation strategies** **at the infrastructure level** tomaintaincore functionality during overload or partial failure + Define **performance budgets, SLOs, and capacity headroom** for peak traffic and failure scenarios + Define **SLOs** **, SLIs** **and error budgets** and ensure they inform deployment, scaling, and incident response + Drive **infrastructure** **as** **code** **and** **GitOps** practices to ensure consistent, repeatable environments + Define and enable **progressive deployment models** (canary, blue/green, rolling) with automated rollback + Build **platform** **and CI/CD** **capabilities** that directly improve( **deployment frequency, lead time for changes, change failure rate, mean time to recover MTTR** ) + Embed **security by design** , includingzerotrustnetworking,mTLS, secrets management, andleastprivilegeaccess + Establish **standard observability** for metrics, logs, traces, and health signals across the platform + Enable **operational** **and incident response** **readiness** , including runbooks, failure testing, and automated remediation + Act as the **technical authority** for platform architecture decisions andtradeoffs + Partner with engineering teams to **onboard services** and ensure alignment with platform standards + Provide reference architectures, patterns, and guidance that improve **developer experience and delivery speed.** **Basic** **Qualifications:** + Bachelor's degree in computer science, Software Engineering, or equivalentcombination of education and experience + 8+ years ofrelated experienceas a **Platform/** **Solutions/ System Design Architect,** **Software Engineer,** **Senior** **DevOps** **Engineer** or a role in similar capacity + Proven experience designing **distributed systems** with an emphasis on **availability, scalability, resilience, and performance** + Demonstratedexpertisein **microservices architecture** , API design, andservicetoservice communication patterns + Strong knowledge of **system design principles** including fault tolerance, capacity planning, dependency isolation, and failure handling + Experience leading or contributing to **architecture reviews** , technical design discussions, andcrossteaminitiatives + Excellent written and verbal c