Senior System Administrator - Linux at Prove

| Greater Denver Area
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Help shape the future of how people experience the digital world. You'll be at the forefront of an exciting shift in how digital identity authentication allows companies and consumers to transact with trust in the digital world.

We’re actively looking to add exceptional people to our team who align with how we envision ourselves culturally and professionally. As a lens to how outsiders see Payfone, you will represent a team of people who love what they do and who they work with.


Under general direction, manages the purchase, installation, configuration and maintenance of network server and storage hardware, Linux operating system(s) VMWare environments and supporting software(s). Responsible for evaluating current systems, maintaining optimal repair state and working to establish future state strategies. Upgrade and maintain systems and processes as required for enhanced functionality and security and compliance requirements. Works on complex problems where analysis of situation requires in-depth evaluation of various factors. Plans large scale systems projects through architecture, vendor comparison and cost studies. Provides second level guidance/direction to System Administrators. Performs technical analysis of complex software, hardware, and transmission facility using various diagnostic tools in support of efficient network operations. Provides guidance/direction for engineering efforts and test and evaluation programs. Performs on-site engineering when required.



Essential Duties and Responsibilities:


Design and Planning


Configuration Management


Support and troubleshoot of existing systems and issues


Trend analysis and capacity planning


System rationalization and optimization


Network administration & Support




• At least eight (8) years of broad IT infrastructure support experience.

• An Associates technology degree or equivalent experience.

• Administrative experience with Linux (RedHat, Centos preferred)

  Administrative knowledge of VMWare, DNS and Microsoft server products.

• Experience with OS and network security technologies and policies.

• Experience with Linux Automation tools – Foreman, Puppet, Ansible

• Experience deploying and provisioning NAS and SAN storage technologies and backups

• Exposure to LAN/WAN concepts including a working knowledge of routing protocols, VLANs, SSL VPN, and IPSec VPN.

• Experience with standard IT development lifecycles.

• Experience with security standards ie, PCI, HIPAA, SOC1. SOC2

SPECIAL SKILLS & ABILITIES  (aka - Superpowers)

• Ability to make sound and logical judgments.

• Demonstrated leadership and personnel/project management skills.

• Advanced knowledge of system vulnerabilities and security issues

• Strong interpersonal, written, and oral communication skills.

• Ability to perform general mathematical calculations for the purpose of creating needs assessments, budgets.

• Able to conduct research into issues and products as required.

• Ability to prioritize and execute tasks in a high-pressure environment and make sound decisions in emergency situations.

• Ability to present ideas in a user-friendly language.

• Highly self-motivated and directed.

• Keen attention to detail.

• Proven analytical and problem-solving abilities.

• Strong customer service orientation.

• Experience working in a team-oriented, collaborative environment. Knowledge, skill and ability needed to perform the essential functions of this job.


• On-call availability

• Sitting for extended periods of time.

• Dexterity of hands and fingers to operate a computer keyboard, mouse, power tools, and to handle other computer components.

• Occasional inspection of cables in floors and ceilings.

• Lifting and transporting of moderately heavy objects, such as computers and peripherals.


• General Office

• Onsite/in-office work

• Lifting over 50 lbs.

• Some travel required

The above noted job description is not intended to describe, in detail, the multitude of tasks that may be assigned but rather to give the associate a general sense of the responsibilities and expectations of his/her position. As the nature of business demands change so, too, may the essential functions of this position

A compensation package composed of a base salary and equity will be structured to attract a uniquely qualified candidate. Excellent health benefits are included. No sponsorship will be provided.

Payfone is the leading digital identity authentication network for the connected world. Our real-time, passive identity authentication solutions enable consumers and the world’s largest banks, insurers, brokerages and technology companies to thwart digital identity theft and transact with trust. Learn more at and

This position description should not be considered the final description of the position. It should be assumed that we would, to some extent, structure responsibilities in accordance with the successful candidate’s capabilities and changing business conditions.
Payfone is an equal opportunity employer committed to providing equal employment opportunity for all people regardless of race, color, religion, gender or sexual orientation, age, marital status, national origin, citizenship status, disability, veteran status or other personal characteristics.
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Technology we use

  • Engineering
    • JavaLanguages
    • JavascriptLanguages
    • PHPLanguages
    • PythonLanguages
    • AngularJSFrameworks
    • SpringFrameworks
    • OracleDatabases
    • RedisDatabases
    • Dynamo DBDatabases


We're in the heart of Downtown Denver. Our office is accessible via light rail and steps from various restaurants, cafes and the 16th Street Mall.

An Insider's view of Prove

What’s the vibe like in the office?

The vibe is great! Payfone's done a good job hiring people who really fit the company culture, so everyone gets along. It makes it easy to work hard when you know everyone else in the office is equally motivated and working to make the company more successful. Payfone also does a great job hosting events that get everyone together outside of work.


Implementation Manager

How has your career grown since starting at the company?

I'm constantly challenged to think outside the box. The complexity of our products creates an environment where the projects I'm working on require that I switch between several skills from documentation to data analysis and research. It couldn't get any better! I have a wider and deeper understanding of how a tech company operates.


Associate Business Analyst

What are Prove Perks + Benefits

Health Insurance & Wellness Benefits
Dental Benefits
Vision Benefits
Health Insurance Benefits
Retirement & Stock Options Benefits
Company Equity
Perks & Discounts
Casual Dress
Commuter Benefits
Company Outings
Stocked Kitchen
Some Meals Provided
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