Full-Time
Senior Endpoint Systems Engineer
Posted on 10/7/2025
HF Sinclair
5,001-10,000 employees
Refines petroleum; markets fuels and lubricants
No salary listed
Remote in USA
Remote
 IT & Security (2) |
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- A minimum of eight years of experience with VDI engineering and administration in a multi-site, enterprise environment is required, including hands-on expertise with Microsoft AVD, and Omnissa Horizon.
- Bachelor’s Degree in MIS or Computer Science, or equivalent years of experience in lieu of a degree, is required.
- Extensive experience designing, deploying, and administering VDI platforms such as Citrix, Microsoft AVD, and Omnissa Horizon in enterprise environments.
- Strong troubleshooting skills across VDI performance, connectivity, and application delivery.
- Proven ability to lead migration projects and drive transformation initiatives.
- Experience in creating technical documentation and training materials.
- Excellent written and verbal communication skills.
- Strong organizational capabilities for project planning, time management, and collaboration within cross-functional teams.
- Prior experience leading VDI migration projects from Citrix to Microsoft AVD and Omnissa Horizon.
- Strong background in designing and enforcing security and compliance policies in cloud-based VDI environments.
- Familiarity with integrating VDI operations into broader IT initiatives through collaboration with security, networking, and infrastructure teams is valuable.
- Hands-on experience using Nerdio for deployment, optimization, and management.
- Experience with IGEL, Intune, and SCCM is considered advantageous for enhancing endpoint management and user experience.
- Mentoring technical staff, leading complex problem-solving efforts, and applying IT service management frameworks such as ITIL.
- Demonstrated commitment to continuous learning and staying current with emerging VDI technologies.
- Lead the migration of virtual desktop environments from Citrix to Microsoft AVD and Omnissa Horizon, including planning, execution, and post-migration support.
- Architect, implement, and optimize cloud-based VDI solutions to support diverse workforce needs across multiple sites.
- Administer AVD and Horizon platforms, managing configuration, provisioning, resource allocation, software deployment, and security policies.
- Develop and enforce VDI security policies, including Conditional Access, Zero Trust principles, and integration with Azure AD and other identity solutions.
- Leverage automation tools (PowerShell, REST APIs, etc.) to streamline deployment, patching, and ongoing VDI management.
- Monitor, troubleshoot, and resolve VDI performance and connectivity issues, collaborating with infrastructure and support teams as needed.
- Provide Tier 3 support for VDI-related incidents and escalations, including complex troubleshooting and project implementation.
- Champion operational excellence by continuously improving VDI processes, documenting procedures, and recommending enhancements to ensure optimal performance and reliability.
- Maintain enterprise-wide VDI configurations, including image management, application packaging, and profile solutions.
- Support secure remote access strategies, BYOD policies, and endpoint protection within the VDI environment.
- Collaborate with IT leadership, network/security teams, and vendors to align VDI strategy with business goals and industry best practices.
- Define technical strategy for VDI management, including capacity planning, disaster recovery, and business continuity.
- Mentor teams, share knowledge, and drive innovation in VDI technology adoption and administration.
- Engage with vendors and industry partners to evaluate new technologies and optimize VDI solutions.
- Set performance expectations for operational support and administration within the VDI team.
- Take on additional assignments as needed, based on business priorities and leadership direction.
HF Sinclair is an independent energy company with operations across refining, midstream, and marketing, plus involvement in renewable diesel, specialty lubricants, asphalt, and chemicals. It refines crude oil into light products such as gasoline, diesel, and jet fuel, and also produces renewable diesel and other specialty products for commercial and industrial customers. Its five-area structure covers downstream refining, midstream logistics, and marketing to a diverse customer base, with additional international activity in Canada and the Netherlands. Unlike many peers that focus on a single segment, HF Sinclair integrates multiple stages of the energy value chain—from producing and processing fuels to distributing them—while expanding into renewable and specialty product areas. The company aims to grow its footprint across the energy value chain, broaden its product slate (including renewables and chemicals), and strengthen its presence in North American and international markets.
Company Size
5,001-10,000
Company Stage
IPO
Headquarters
Dallas, Texas
Founded
1947
Simplify's Take
What believers are saying
- Record 652,000 bbl/d throughput in 2025 with $87M operating cost reductions.
- Q1 2026 refining margin increased 9% to $9.95 per barrel sold.
- Retail joint venture with UPOP Holdings captures higher-margin downstream fuel spreads.
What critics are saying
- CEO Tim Go and CFO Atanasov permanently departing disrupts strategic execution.
- EPA small refinery RINs waivers face reversal under stricter biofuel mandates.
- Marathon Petroleum's March 2026 Rockies acquisition directly competes for market share.
What makes HF Sinclair unique
- 25-location refining footprint across mid-continent, Southwest, and Rocky Mountain regions.
- 380 million gallons annual renewable diesel capacity with $49M Q1 2026 tax credits.
- Industrial Oils Unlimited acquisition January 2026 expands specialty lubricants market reach.
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Benefits
Medical Insurance
Vision Insurance
Dental Insurance
Paid Time-Off
401(k) Retirement Plan
401(k) Company Match
Educational Reimbursement
Parental Bonding Time
Employee Discounts
Company News
Sinclair Oil expects to permanently separate from CEO Tim Go and CFO Atanas Atanasov after both executives took voluntary leave last month, the company announced in its annual report. Go stepped aside after Atanasov raised concerns that certain actions by Go created an unfavorable "tone at the top" regarding Sinclair's 2025 disclosure processes. An internal review by the board with outside legal counsel concluded Go's actions did not ultimately impact disclosure processes, but developed separate concerns about his communication approach during this period. Atanasov subsequently took leave after the board raised concerns about his future working relationships with management. Chairperson Franklin Myers is temporarily covering Go's duties, whilst Vivek Garg serves as acting CFO. The leadership changes coincide with Sinclair launching a joint venture with UPOP Holdings for 30 convenience stores across Colorado and New Mexico.
HF Sinclair Corporation's chief financial officer, Atanas Atanasov, has taken a voluntary leave of absence following concerns raised by the company's audit committee. The petroleum refiner has appointed Vivek Garg as interim CFO. The development follows CEO Tim Go's similar request filed on 17 February, with Board Chair Franklin Myers stepping in as interim CEO. The leadership changes stem from an assessment of the company's disclosure processes initiated in January. Atanasov had raised concerns that certain actions by Go created an unfavourable "tone at the top" regarding disclosure processes for fiscal year 2025. However, separate concerns later emerged about Atanasov's actions during the review process and his working relationships with management. HF Sinclair is negotiating separation arrangements with both executives.
HF Sinclair fell 10.86% on Wednesday to $51.57 per share after chief executive Timothy Go requested a voluntary leave of absence. The company did not disclose the reason for the leave. The board accepted Go's request and appointed board chairman Franklin Myers as interim president and CEO. The company's Nominating, Governance and Social Responsibility Committee will determine future actions regarding the chief executive position. HF Sinclair is also reviewing certain matters related to its disclosure processes. Despite the leadership uncertainty, the company reported net income attributable to shareholders jumped 227% to $579 million in 2024, though sales declined 6% to $26.87 billion year-on-year.
HF Sinclair Corporation reported record annual refining throughput of 652,000 barrels per day in 2025, though fourth-quarter results were weakened by declining fuel margins and inventory liquidation following maintenance. The company achieved an $87 million year-over-year reduction in refining operating costs through improved reliability and cost controls. CEO Timothy Go has taken voluntary leave, with Franklin Myers assuming the role of temporary CEO. An ongoing Audit Committee review of disclosure processes does not affect reported financial figures, management emphasised. For 2026, HF Sinclair expects throughput of 585,000 to 615,000 barrels per day, with sustaining capital expenditures decreasing by $125 million. The company received $313 million in EPA small refinery RINs waivers during the fourth quarter. Management expressed optimism about 2026 margins, citing global supply-demand deficits.
DDD Partners sold 125,198 shares of HF Sinclair in the fourth quarter, an estimated $6.45 million transaction based on quarterly average prices, according to a January SEC filing. The fund's quarter-end position declined by $8.37 million, reflecting both share sales and stock price movements. Following the transaction, DDD Partners holds 290,951 HF Sinclair shares valued at $13.41 million, representing 0.85% of its 13F reportable assets. HF Sinclair shares have surged 44.8% over the past year, significantly outperforming the S&P 500's roughly 14% gain. HF Sinclair produces and markets petroleum products including petrol, diesel, jet fuel and renewable diesel, operating refineries across the central and western United States. The company generated $26.90 billion in trailing twelve-month revenue.