Jobs in United States

Senior It Systems Engineer in United States

2,107 active opportunities · Updated October 2026

Explore current senior it systems engineer jobs across United States. Filter by work mode, employment type, experience, department, date posted and distance.

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📍 Hampton, Vatican City State (holy See), United States
✓ Quality checkedCompany trend +460%

The Defense Sector at Leidos is seeking a motivated TS/SCI cleared Network Administrator to support the installation, configuration, and day-to-day management of enterprise network infrastructure. This role is an excellent opportunity for an early-career network professional to gain hands-on experience with routing and switching platforms, including Session Smart Router (SSR) / 128 Technology SD-WAN solutions, in a structured and security-conscious environment. The ideal candidate demonstrates a solid foundation in networking fundamentals, a willingness to learn vendor-specific technologies, and the discipline to operate within DoD network standards. The job duties will be performed daily on site at Langley Air Force Base, VA. ​ Roles and Responsibilities: ​Assist in the configuration, deployment, and ongoing management of routers, switches, and Session Smart Router (SSR) appliances across enterprise and edge network environments. ​Support the design and implementation of routing policies, service policies, and traffic steering configurations on SSR/128 Technology platforms under senior engineer guidance. ​Perform LAN switching administration — including VLAN configuration, spanning tree, trunking, and port security — on Juniper EX Series and/or Cisco Catalyst platforms. ​Assist with the configuration and troubleshooting of routing protocols including OSPF and BGP (eBGP and iBGP) across enterprise WAN and data center environments. ​Monitor network health, availability, latency, and throughput using network management tools; escalate anomalies and assist in root cause analysis. ​Support configuration and maintenance of firewall rules, access control lists (ACLs), IPsec VPN tunnels, and other network security controls. ​Execute software and firmware upgrades, patch management, and lifecycle maintenance activiti

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📍 Massachusetts, United States of America, United States
✓ Quality checkedCompany trend +37.5%

Commercial Account Manager Description - Job Summary • This role is responsible for identifying customers’ unique requirements and implementing account planning for growth opportunities. The role acts as a subject matter expert, applies consultative selling techniques, and mentors junior account managers. Responsibilities • Demonstrates an advanced level of subject matter expertise and employs consultative-selling techniques to identify and advance opportunities. • Coordinates and owns account plans for strategic commercial accounts, focusing on larger deals, portfolio management, and effectively selling the organization’s offerings. • Identifies complex customer requirements, maps them with the organization’s capabilities, and chooses the most suitable direct/indirect supply chain options. • Builds strong professional relationships with high-level clients, gains a deep understanding of their unique business needs, and aligns the organization's solutions accordingly. • Develops and executes sales strategies, territory account plans, and market penetration strategies to drive significant revenue growth and expand market share. • Analyzes and interprets key performance indicators (KPIs) and market trends to provide strategic insights and recommendations to senior management for optimizing sales performance. • Engages strategically with partners to improve win rates on selective deals and consistently achieves and manages quarterly, half-yearly, and yearly sales quotas. • Leads contract negotiations with major clients, overseeing contract terms and renewals with a proactive approach to ensure profitable deals and lasting positive relationships. • Manages the sales pipeline, enters, and updates opportunities in the pipeline tool, and implements pipeline management practices. • Conducts regular strategic business rev

SalesforceSupply Chain
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📍 Irving Texas United States, United States
✓ Quality checkedCompany trend +800%

Citi is evolving its current commerce offerings and branching into new avenues of growth by offering merchants access to high value cardmembers across Citi’s digital properties and partner placements. By combining Citi’s scale, trusted customer relationships, and real purchase insights, the business delivers advertising that is relevant to customers and drives measurable, incremental impact for advertisers. The Planning Associate supports the development and execution of media plans that align advertiser objectives with Citi’s data and media capabilities. This role contributes to both strategy and execution, helping translate campaign briefs into actionable plans and ensuring campaigns are set up effectively. This individual will work closely with Sales, Ad Operations, Product, and Analytics to help deliver campaigns that meet performance goals. Responsibilities: Support the development of integrated media plans, including audience strategy, budget allocation, channel mix, and timing Use Citi’s first-party data to help define target audiences and improve campaign performance Translate campaign objectives into clear planning recommendations with guidance from senior team members Partner with Sales and Account teams to support pre-sale planning and client presentations Collaborate with Ad Operations, Analytics, and Product to ensure campaigns are feasible and executed correctly Monitor campaign performance and recommend optimizations to improve key metrics (e.g., ROAS, conversion, engagement) Help communicate planning approach, performance expectations, and optimization ideas in internal and client discussions Contribute to developing

Artificial IntelligenceAI
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Relocation support. Relocation assistance is stated. This does not establish visa sponsorship.
📍 Tennessee, Remote, United States· Remote
✓ High-confidence listingCompany trend +157.1%

$108.6K – $250.7K/yr

Quick readStrong listing-quality and freshness signals

Founded in 1849, Pfizer Inc. began as a small chemistry enterprise built on the belief that scientific ingenuity can improve—and protect—human life. Today, as one of the world’s leading biopharmaceutical companies, Pfizer’s purpose is Breakthroughs that change patients’ lives : discovering, developing, and delivering medicines and vaccines that address unmet need, earn trust through quality and integrity, and reach patients through strong partnerships across the healthcare system. In a complex and rapidly evolving pharmaceutical landscape, our work is measured by one outcome - helping patients live longer, healthier lives . Rare Disease Sales Organization Mission & Impact Pfizer’s Rare Disease – Rare Cardiac Sales organization exists to help improve the lives of people living with serious rare cardiac conditions by connecting scientific innovation to the clinicians and systems that deliver care. We lead with integrity and patient need— advancing disease and product education grounded in robust clinical evidence , promoting Pfizer Rare Cardiac therapies compliantly, and supporting healthcare professionals’ understanding of appropriate patient identification and use based on approved indications. Through evidence‑based scientific exchange, we help reduce access, diagnostic, and workflow barriers so more patients can start and stay on the right therapy. Our impact is more informed clinical decision ‑ making, improved consistency of care, and better outcomes for patients , contributing to a higher standard of care across the rare cardiac community. Role Summary The Rare Disease – Rare Cardiac, Senior Health & Science Specialist is a field-based specialty sales role responsible for driving the growth of Rare Cardiac products through compliant, strategic relationships within assigned accounts. This role partners with Therapeutic Area Specialists and Key

AIRecruitment
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📍 Tennessee, United States· Remote
✓ High-confidence listingCompany trend +157.1%

$108.6K – $250.7K/yr

Quick readStrong listing-quality and freshness signals

Pfizer US/PR Commercial Sales Founded in 1849, Pfizer Inc. began as a small chemistry enterprise built on the belief that scientific ingenuity can improve—and protect—human life. Today, as one of the world’s leading biopharmaceutical companies, Pfizer’s purpose is Breakthroughs that change patients’ lives : discovering, developing, and delivering medicines and vaccines that address unmet need, earn trust through quality and integrity, and reach patients through strong partnerships across the healthcare system. In a complex and rapidly evolving pharmaceutical landscape, our work is measured by one outcome - helping patients live longer, healthier lives . Rare Disease Sales Organization Mission & Impact Pfizer’s Rare Disease – Rare Cardiac Sales organization exists to help improve the lives of people living with serious rare cardiac conditions by connecting scientific innovation to the clinicians and systems that deliver care. We lead with integrity and patient need— advancing disease and product education grounded in robust clinical evidence , promoting Pfizer Rare Cardiac therapies compliantly, and supporting healthcare professionals’ understanding of appropriate patient identification and use based on approved indications. Through evidence‑based scientific exchange, we help reduce access, diagnostic, and workflow barriers so more patients can start and stay on the right therapy. Our impact is more informed clinical decision ‑ making, improved consistency of care, and better outcomes for patients , contributing to a higher standard of care across the rare cardiac community. Role Summary The Rare Disease – Rare Cardiac, Senior Health & Science Specialist is a field-based specialty sales role responsible for driving the growth of Rare Cardiac products through compliant, strategic relationships within assigned accounts. This role partn

AIRecruitment
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📍 Santa Clara, United States
✓ Quality checkedCompany trend -12.7%

The LPU Software Team is seeking a Technical Program Manager to lead software initiatives across the LPU SDK. In this role, you will partner with engineering and cross-functional teams to define program plans, align priorities, manage dependencies, and drive execution. You will identify risks, remove obstacles, and ensure teams deliver high-quality software on schedule that meet our customers needs. What You'll Be Doing: Build and implement execution plans to ensure we meet the needs of the business Build relationships and work closely with partners across NVIDIA Own all aspects of technical program management – planning, forecasting, documenting, scheduling, running effective meetings, prioritization, dependency management, reporting, and escalations Build and own metrics for measuring program efficiency, collect and analyze data in support of planning and data driven decisions Report on overall program status, providing insights and recommendations to senior management Work with multi-functional matrixed teams - guide teams crafting for sophisticated, complex, competing and often conflicting customer requirements and moderate technical discussions to successful conclusions Serve as liaison between developers and customers, connecting those with and without technical backgrounds. Promote continuous improvement by identifying process enhancement opportunities. What We Need To See: Bachelor’s degree (or equivalent experience) in a related field with proven program management expertise and proficiency in technical and management practices 3+ years program management experience including proven ability managing enterprise software products Demonstrated skill in eng

GitMachine LearningAIProject Management
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📍 New York, New York, United States
✓ Quality checkedCompany trend +212.5%

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Director Product Management - Technical About Mastercard Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships, and passion, our innovations help individuals, financial institutions, governments, and businesses realize their greatest potential. Role Summary We are looking for a **Principal Product Manager – Technical** to lead product strategy and execution for **global, real‑time switching and authorization platforms**.In this role, you will own the vision, roadmap, and delivery of **mission‑critical transaction processing capabilities** that operate at massive scale with strict requirements for availability, latency, resiliency, and correctness. You will work closely with engineering, architecture, operations, and business leaders to deliver platforms that support billions of transactions and enable reliable, secure payment experiences worldwide. This is a **senior individual contributor role** with broad influence across teams, regions, and portfolios. What You’ll Do Product Strategy & Vision* Define and own the long‑term product vision and strategy for switching and authori

Recruitment
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📍 Purchase, New York, United States
✓ Quality checkedCompany trend +212.5%

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Manager, Business Administration Overview As Chief of Staff, you will be the strategic right hand to leadership, ensuring priorities are clear, processes run smoothly, and communication is impactful. This role blends operational excellence with creative storytelling, requiring a unique mix of consulting rigor, organizational savvy, and executive presence. Key Responsibilities: Operational Leadership • Coordinate and support activities within the Debit, Prepaid and Sustainability Solutions organization within Consumer Products & Processing. • Manage calendars, organize town halls, and prepare materials for leadership engagements. • Drive alignment across teams and ensure timely execution of priorities. Strategic Governance • Lead the Weekly Review, collecting updates from team leaders and synthesizing progress on strategic initiatives. • Present insights and recommendations to senior stakeholders for informed decision-making. Executive Communication & Storytelling • Develop compelling storyboards and presentations that simplify complexity and inspire action. • Elevate communication standards across the team with creativity and clarity. Special Projects & Leadership Support • Partner with leadership on high-impact initiatives and cross-functional projects. • Serve as

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📍 Field, United States
✓ High-confidence listingCompany trend +32.6%

$133.2K – $172.4K/yr

Quick readStrong listing-quality and freshness signals

At Gilead, we’re creating a healthier world for all people. For more than 35 years, we’ve tackled diseases such as HIV, viral hepatitis, COVID-19 and cancer – working relentlessly to develop therapies that help improve lives and to ensure access to these therapies across the globe. We continue to fight against the world’s biggest health challenges, and our mission requires collaboration, determination and a relentless drive to make a difference. Every member of Gilead’s team plays a critical role in the discovery and development of life-changing scientific innovations. Our employees are our greatest asset as we work to achieve our bold ambitions, and we’re looking for the next wave of passionate and ambitious people ready to make a direct impact. We believe every employee deserves a great leader. People Leaders are the cornerstone to the employee experience at Gilead and Kite. As a people leader now or in the future, you are the key driver in evolving our culture and creating an environment where every employee feels included, developed and empowered to fulfil their aspirations. Join Gilead and help create possible, together. Job Description Gilead's mission is to discover, develop, and deliver therapies that will improve the lives of patients with life-threatening illnesses worldwide. As a Senior Therapeutic Specialist within Gilead's Liver (HBV/HDV) division you will represent Gilead's products and services to a defined customer base. Your focus will be on generating and growing sales by consistently achieving or exceeding sales targets within a specific geographic area. This role emphasizes a comprehensive account management approach, engaging healthcare practices through in-person representation, face-to-face meetings, and strategic partnerships. You will establish strong working relationships with healthcare

Recruitment
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📍 Field, United States
✓ High-confidence listingCompany trend +32.6%

$133.2K – $172.4K/yr

Quick readStrong listing-quality and freshness signals

At Gilead, we’re creating a healthier world for all people. For more than 35 years, we’ve tackled diseases such as HIV, viral hepatitis, COVID-19 and cancer – working relentlessly to develop therapies that help improve lives and to ensure access to these therapies across the globe. We continue to fight against the world’s biggest health challenges, and our mission requires collaboration, determination and a relentless drive to make a difference. Every member of Gilead’s team plays a critical role in the discovery and development of life-changing scientific innovations. Our employees are our greatest asset as we work to achieve our bold ambitions, and we’re looking for the next wave of passionate and ambitious people ready to make a direct impact. We believe every employee deserves a great leader. People Leaders are the cornerstone to the employee experience at Gilead and Kite. As a people leader now or in the future, you are the key driver in evolving our culture and creating an environment where every employee feels included, developed and empowered to fulfil their aspirations. Join Gilead and help create possible, together. Job Description Gilead's mission is to discover, develop, and deliver therapies that will improve the lives of patients with life-threatening illnesses worldwide. As a Senior Therapeutic Specialist within Gilead's Liver (PBC/HCV) division you will represent Gilead's products and services to a defined customer base. Your focus will be on generating and growing sales by consistently achieving or exceeding sales targets within a specific geographic area. This role emphasizes a comprehensive account management approach, engaging healthcare practices through in-person representation, face-to-face meetings, and strategic partnerships. You will establish strong working relationships with healthcare

Recruitment
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📍 Remote Based, United States· Remote
✓ High-confidence listingCompany trend +10%
Quick readStrong listing-quality and freshness signals

Job Title Zone Project Management Director - Imaging Systems (East Zone) Job Description Join Philips as a Zone Project Management Director - Imaging Systems (East Zone) where you'll lead a team of Customer Project Managers to deliver complex healthcare installations, drive operational and financial performance, accelerate revenue realization, and create exceptional customer outcomes through strategic execution, cross-functional collaboration, and continuous improvement. Your role: Provide strategic leadership to a team of Customer Project Managers, fostering a high-performance culture through coaching, mentoring, talent development, and succession planning. Enable the team to effectively partner with hospitals, general contractors, project managers, and internal stakeholders to achieve critical project milestones and customer commitments. Navigate and lead complex commercial installation and construction projects across the zone, partnering with customers and key stakeholders to accelerate the order-to-completion cycle and drive predictable revenue delivery. Align project execution with customer requirements, business objectives, and financial targets while delivering exceptional customer experience. Oversee project portfolios and large-scale customer implementations by driving effective planning, resource allocation, revenue forecasting, inventory utilization, budget management, and schedule adherence. Prioritize initiatives based on strategic value, customer impact, and business objectives to maximize operational and financial performance across the zone. Serve as the senior escalation point for complex customer and operational issues, proactively managing risks, resolving critical challenges, and maintaining strong customer relationships throughout the project lifecycle. Ensure compliance with regulatory, quality, and organizational standards wh

AISapExcelPower Bi
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📍 New York, New York, United States
✓ High-confidence listingCompany trend -87.8%
Quick readStrong listing-quality and freshness signals

About Datadog: Datadog is the essential monitoring and security platform for cloud applications. We bring together end-to-end traces, metrics, and logs to make your applications, infrastructure, and third-party services entirely observable. These capabilities help businesses secure their systems, avoid downtime, and ensure customers are getting the best user experience. The Team: The Financial Planning & Analysis (FP&A) team analyzes company financial data (revenue, customers, headcount, expenses, etc.) in order to support the business’ growth and success. Within FP&A, the R&D Finance team enables the financial strategy behind Datadog’s Engineering and Product organizations. We partner directly with technical leadership to drive decision-making around our most critical investments. Your work will be highly cross-functional and play a pivotal role in connecting the dots across the organization through a financial lens, ensuring operational alignment and informing decision making. The Opportunity: As a part of the R&D Finance team, this person will be key in supporting our product and engineering leadership team. Reporting to the Senior Manager, you will help create our annual budget and financial targets and work with operational leaders to support execution against our goals. Your work will be highly cross-functional and strategic, and you will play a pivotal role in connecting the dots across the organization through a financial lens, in order to help ensure operational alignment and inform decision making. What You’ll Do: Partner with senior business leaders to manage their departmental budgets on a regular basis, including but not limited to the company’s co-founder and CTO Manage financial forecasts and analytics, which include data across revenue, customers, product, company expenses, and headcount / workforce. Help manage significant portions of the company’s spend, including but not limited to AI and GPU spend across the compan

AIExcelTableauAccounting
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📍 Bellevue, Washington, United States
✓ High-confidence listing
Quick readStrong listing-quality and freshness signals

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange™️ platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 160+ public exchanges globally and thousands of private exchanges at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform. We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler. Role We are looking for a Staff Site Reliability Engineer (Production Engineer) to join our team. This is a hybrid role (onsite three days a week in San Jose, CA or another Zscaler office; remote can be considered for exceptional candidates) reporting to the Senior Manager, Site Reliability Engineering in the Zero Trust Exchange department. As a key member of the Zero Trust Exchange team, you will own the systems-level reliability and performance of Zscaler’s high-throughput bare-metal and cloud infrastructure processing tens of billions of daily transactions across a global, multi-region fleet. This is a software-first SRE role: you will write production-grade code and automation, drive the shift from reactive incident response, and bring engineering discipline to the systems-level work - OS, network and application debugging - that keeps the fleet operating safely at scale. What You’ll Do (Role Expectations) Maintain h

PythonKubernetesLinuxAI
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📍 New York, NY, United States
✓ High-confidence listing
Quick readStrong listing-quality and freshness signals

Who We Are Addepar is a global data and AI platform empowering investment professionals to turn complex financial information into actionable intelligence. Addepar unifies portfolio, market and client data in a total portfolio view and delivers AI-powered insights within investment and client workflows. More than 1,400 firms in nearly 60 countries use Addepar to manage and advise on nearly $9 trillion in assets. Its open platform integrates with nearly 650 software, data and consulting partners to power end-to-end investment operations across firms of all sizes and complexity. Addepar supports clients worldwide with offices in New York City, Salt Lake City, London, Edinburgh, Pune, Dubai, Geneva, Singapore and São Paulo. The Role We are seeking a Staff Full Stack Software Engineer to join the Advisor Experience team as our Technical Lead. Our team is focused on building tools for financial advisors to grow and sustain their business. We oversee bespoke products for advisors and develop advisor-focused capabilities throughout the Addepar platform. In this role, you will be the primary technical anchor for new capabilities including Secure Message Center — a compliant messaging experience built into Addepar's client portal that allows advisors and their clients to communicate directly within the platform. You will partner directly with Engineering Leadership and Product Management to build a modern, scalable architecture from the ground up. Beyond system design, you will act as a true engineering multiplier: setting technical standards, mentoring junior and mid-level engineers, and working alongside other senior engineers and AI specialists to deliver high-impact advisor tools. Applicants must be legally authorized to work in the United States for any employer without requiring current or future visa sponsorship (for example, employment-based visas such as H-1B, F-1/OPT, or similar), and must be authorized to begin work in the U.S. on their first day of employme

JavaReactVueAI
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📍 Oregon, Hillsboro, United States
✓ Quality checkedCompany trend +184.2%

Job Details: Job Description: Join Intel and Build a Better Tomorrow What We Do The Intel Foundry Manufacturing Development and Customer Engineering (MDCE) and Logic Technology development (LTD) organizations delivers process technology innovation to drive Intel's product roadmap. What We Offer • We give you opportunities to transform technology and create a better future by delivering products that touch the lives of every person on earth • As a global leader in innovation and new technology, we foster a collaborative, supportive, and exciting environment where the brightest minds in the world come together to achieve exceptional results • We offer a competitive salary and financial benefits such as bonuses, life and disability insurance, opportunities to buy Intel stock at a discounted rate, and Intel stock awards (eligibility at the discretion of Intel Corporation) • We provide benefits that promote a healthy, enjoyable life: excellent medical plans, wellness programs, and amenities, time off, recreational activities, discounts on various products and services, and many more creative perks that make Intel a Great Place to Work Benefits We provide benefits that promote a healthy, enjoyable life: excellent medical plans, wellness programs, and amenities, time off, recreational activities, discounts on various products and services, and many more creative rewards that make Intel a Great Place to Work. Find more information about our amazing benefits here: Intel Benefits Key Responsibilities MDCE/LTD Semiconductor Senior Process Integration Development Engineers are responsible for leading scientific research enabling the manufacture

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