Principal Platform Engineer

Description

At Sunflower Bank, N.A., we’re experiencing great growth. Since our founding in 1892, we've been committed to serving our communities and supporting the team members who make it all possible. As a full-service financial institution, we offer a full range of relationship-focused services to meet personal, business, and wealth-management financial objectives. Creating Possibility is not just our mission, it’s what we do every day for clients and associates.

Learn more about Sunflower Bank, N.A. at

Sunflower Bank, N.A. is looking for an energetic, highly motivated individual to fill the position of a full-time P
rincipal Platform Engineer
.

As a Principal Platform Engineer, you will define and drive the technology vision for Platform Engineering within Sunflower Bank's broader IT modernization strategy. This role connects strategic business outcomes to engineering execution by standardizing, simplifying, and automating the platforms and practices used to deliver secure, resilient, compliant, and scalable banking capabilities.

You will lead the creation and evolution of Sunflower Bank's Internal Developer Platform (IDP) and shared technology services, providing governed self-service, engineering standards, golden paths, automation, observability, and reusable infrastructure capabilities that accelerate delivery, reduce operational risk, and eliminate unnecessary complexity.

Operating as both a technical strategist and hands‑on engineering change leader, you will influence technical direction across the enterprise, establish measurable standards, and partner with Architecture, Cybersecurity, Infrastructure, Operations, Data, and Application teams to modernize the technology estate and improve delivery speed, reliability, control effectiveness, and business outcomes.

Technology delivery and operations teams are the platform's customers and partners. Success is measured through adoption, developer and operator experience, automation, service reliability, control effectiveness, cost transparency, reduction in manual work and technical debt, and the consistent delivery of business value.

• Define and execute a multi-year Platform Engineering roadmap aligned to Sunflower Bank's business strategy, target-state architecture, risk appetite, merger integration priorities, and IT modernization outcomes.
• Establish and evolve the Internal Developer Platform and shared platform services using a product operating model, with clear service ownership, roadmaps, lifecycle standards, support models, and measurable customer outcomes.
• Define platform capabilities including:
• Developer self-service
• Infrastructure automation
• CI/CD services
• Security guardrails
• Identity integration
• Observability
• Service onboarding
• Runtime platforms
• Promote a platform-first, reuse-before-build mindset across technology teams to reduce tool sprawl, one-off solutions, and long-term support complexity.
• Measure platform success through a balanced scorecard covering adoption, time to deliver, reliability, security and compliance, unit cost, automation, customer experience, technical debt reduction, and operational efficiency.

• Design and lead the implementation of an enterprise Internal Developer Platform.
• Establish secure-by-design engineering golden paths that enable teams to rapidly build, deploy, operate, and retire solutions using approved, supportable, and auditable patterns.
• Build reusable platform capabilities that reduce duplication and improve consistency across engineering teams.
• Create policy-governed self-service experiences that allow authorized teams to provision environments, deploy applications, access approved services, and consume infrastructure safely, consistently, and with traceable approvals.
• Drive platform product management practices, including platform roadmaps, adoption strategies, and customer feedback loops.

• Define engineering reference architectures, platform design standards, and technology lifecycle requirements that guide modernization, integration, and decommissioning decisions.
• Establish reusable patterns for hybrid cloud, infrastructure, application delivery, integration, data, identity, resilience, and security services, while reducing unnecessary variation across the enterprise.
• Serve as a senior technical authority on engineering platforms and enterprise-scale systems.
• Ensure solutions meet defined requirements for scalability, recoverability, resiliency, observability, supportability, security, data protection, regulatory compliance, and total cost of ownership.
• Partner with Enterprise Architecture to evolve target-state technology architecture.

• Establish pragmatic Site Reliability Engineering (SRE) practices across the organization, including service ownership, reliability engineering, capacity management, problem…