Prin IT Technologist - DNS, PKI, Certification Services

At MiniMed, you can begin a lifelong career of exploration and innovation, while helping make a difference in the lives of people living with diabetes around the globe. You'll lead with purpose, breaking down barriers to innovation for a more connected, compassionate world.

About the Role

We are seeking a DNS & PKI Engineer responsible for the design, implementation, automation, and operational support of enterprise DNS and certificate services. This role is critical to ensure secure, highly available name resolution and certificate lifecycle management across hybrid environments #BetterDayStartNow

Key Responsibilities DNS Engineering & Operations Design, implement, and maintain enterprise DNS infrastructure, including: Authoritative and recursive DNS services

Internal and external DNS architectures

Administer and optimize Infoblox DDI (DNS, DHCP, IPAM) platforms

Manage DNS zones, records, delegation, and resolution performance

Implement DNS security controls: DNSSEC

Response policy zones (RPZ)

DDoS protection strategies

Integrate DNS services with Cloudflare for: Public DNS hosting

CDN and traffic routing

Security (WAF, bot protection, rate limiting)

Troubleshoot complex resolution issues across hybrid (on-prem/cloud) environments

PKI & Certificate Management Design and manage enterprise PKI solutions, including: Internal Certificate Authorities (CAs)

Integration with public CAs

Oversee full certificate lifecycle: Request, issuance, renewal, revocation, and retirement

Implement and maintain automation for certificate lifecycle management (e.g., ACME, APIs) Integrate catalog items within ITSM platforms

Understand certificate renewal process/auto renewal

Deploy and manage: SSL/TLS certificates for web apps, APIs, and infrastructure

Mutual TLS (mTLS) where applicable

Ensure compliance with organizational security policies and industry standards

Cloudflare Integration Administer and optimize Cloudflare services, including: DNS hosting and record management

SSL/TLS configuration (Full/Strict modes, edge certificates)

CDN and performance tuning

Configure and maintain: Web Application Firewall (WAF)

Zero Trust / access controls (where applicable)

Support hybrid DNS architectures across on-prem and Cloudflare edge

Automation & Engineering Develop automation for DNS and certificate management: Infrastructure as Code (IaC) (e.g., Terraform, ARM, etc.)

API-based integrations (Infoblox, Cloudflare, DigiCert)

Build monitoring and alerting for: DNS resolution health

Certificate expiration

Security anomalies

Standardize deployment patterns and operational runbooks

Operations & Support Provide L3 support and escalation for DNS and certificate-related incidents from MSP

Help MSP conduct root cause analysis and implement corrective actions

Maintain system availability and performance aligned with SLAs

Participate in on-call rotation as needed

Required Qualifications 5+ years of hands-on experience in: DNS engineering (enterprise-scale)

PKI / certificate lifecycle management

Strong experience with: Infoblox (DDI platform administration, NIOS-X)

DigiCert (certificate issuance, automation, APIs)

Cloudflare (DNS, CDN, SSL/TLS, WAF)

Domain registrar management experience

Deep understanding of: DNS protocols and architecture

TCP/IP networking fundamentals

SSL/TLS handshake and certificate chains

Experience troubleshooting: DNS resolution failures

Certificate trust and validation issues

Scripting/automation experience (PowerShell, Python, or similar)

Preferred Qualifications Experience with: Hybrid cloud environments (Azure/AWS)

Microsoft Entra ID / Active Directory integration

Familiarity with: Certificate automation tooling

Zero Trust architecture

Experience implementing DNS security controls (DNSSEC, RPZ)

Infrastructure-as-Code experience (Terraform preferred)

Physical Job Requirements

The above statements are intended to describe the general nature and level of work being performed by employees assigned to this position, but they are not an exhaustive list of all the required responsibilities and skills of this position.

Benefits & Compensation

MiniMed offers a competitive salary and flexible benefits package At MiniMed, we put people first. A commitment to our employees lives at the core of our values: We recognize their contributions. They share in the success they help create. We offer a wide range of benefits, resources, and competitive compensation plans designed to support you at every stage of your career and life.

About MiniMed

We want to make every day a better day for people living with diabetes. Our team of creative innovators around the globe share a passion for finding the simplest solutions to the problems that people with diabetes face on a daily basis. For more than 40 years, we've been redefining what's possible, from intelligent dosing systems designed for real life to predictive insights that stay a step ahead, and we're dedicated to continuing to support our customers through every step of their journey — meeting them where and how they need it.