Sustaining Engineer I, Internet Solutions

Apply Share Job Description Posted Friday, March 20, 2026 at 2:00 AM Location Onsite - Sioux Falls, SD About the company: SONIFI is a leading provider of technology solutions for the hospitality industry, delivering managed Wi‑Fi, networking, and in‑room entertainment platforms to hotels and resorts across North America. Our solutions support reliable, secure, and scalable guest and operational experiences across complex, distributed environments.

About the role:

The Sustaining Engineer, Internet Solutions applies advanced enterprise networking expertise to support, maintain, and improve SONIFI's managed Wi‑Fi and networking platforms. This role independently diagnoses and resolves complex, non‑routine technical issues, leads advanced escalations, executes system upgrades, and determines corrective actions to ensure platform reliability, performance, and scalability. The Sustaining Engineer serves as a technical authority for issue resolution and service continuity.

Why the role matters:

This role plays a key part in maintaining service stability and accelerating incident resolution across SONIFI's customer environments. As a senior escalation point and technical leader, the Sustaining Engineer helps reduce repeat issues, strengthen platform resilience, and ensure consistent, high‑quality service delivery.

Responsibilities:

• Serve as a subject matter expert on SONIFI networking solutions and support tools
• Independently diagnose and resolve complex enterprise networking issues with significant customer or service impact
• Lead advanced internal and external escalations in partnership with Engineering, Product, Field Support, OEMs, and partners
• Perform advanced diagnostics including log analysis and packet capture review across converged services such as Wi‑Fi, TV, Casting, and IoT
• Plan, execute, and validate system upgrades and maintenance activities, assessing risk and customer impact
• Provide on‑site technical leadership during critical incidents when required
• Develop and maintain technical documentation, training materials, and knowledge‑sharing resources
• Partner cross‑functionally to align technical solutions with business objectives and customer requirements
• Maintain accurate technical documentation in Salesforce and other internal systems

Requirements:

• Bachelor's degree in Engineering, Computer Science, Information Systems, or equivalent experience
• 5+ years of experience supporting enterprise networking environments, with a strong focus on wireless networks in hospitality or multi‑site enterprises
• Advanced knowledge of enterprise networking concepts including L2/L3 switching, WLAN architectures, wireless protocols, gateways, firewalls, TCP/IP, OSI, RADIUS, LDAP, and packet analysis
• System‑level experience with Windows and Linux servers, virtualization, scripting, and AWS preferred
• Proven experience serving as a technical escalation point and exercising independent technical judgment
• Strong written and verbal communication skills with the ability to document and explain complex concepts
• Strong customer service skills and ability to remain composed under pressure
• High awareness of network security best practices
• Self‑starter, collaborative team player, and customer advocate Preferred certifications:
• CCNA, CCNP, CWNP, CompTIA Network+ or Security+
• OEM certifications such as Ruckus, Aruba, Fortinet, or Nomadix Together, we can build your future.

SONIFI pays a competitive salary for this role based on a variety of factors including location, experience, education, specialty, and training. This position is also eligible for PTO, holidays, health, dental, vision, retirement plan, pet insurance, on‑demand pay, and a variety of other benefits. SONIFI and SONIFI Health value diversity and are proud to be Equal Opportunity Employers. We consider all qualified applicants for employment regardless of age, race, color, national origin, sex, religion, veteran status, disability, sexual orientation, gender identity, or any other protected status. If you require assistance in completing our online application due to a disability, please contact Human Resources at 605‑988‑1000. For more information about Equal Employment Opportunity, please visit https://www.eeoc.gov/ . SONIFI Solutions participates in E‑Verify, a federal program to confirm authorization to work in the United States. #Technical Job Details Pay Type Salary Scan this QR code and apply! Download Sioux Falls, SD, USA When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences, or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because Dayforce respects your right to privacy, you can choose not to allow some types of cookies by clicking on "Manage Preferences" below. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer. For more information, refer to Dayforce Cookie Statement . Manage preferences Reject Accept