Senior System Engineer jobs in United States
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AppCard, Inc. · 10 hours ago

Senior System Engineer

AppCard Inc. is a technology and marketing company headquartered in Manhattan, NY, seeking a Senior Systems Engineer. This role is responsible for system reliability, automation, and advanced incident resolution across Linux infrastructure, POS networks, and data pipelines, working closely with various teams to ensure platform stability and a great customer experience.

AnalyticsBusiness IntelligenceLoyalty ProgramsSaaSSoftware
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H1B Sponsor Likelynote
Hiring Manager
Fateya Shajahan
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Responsibilities

Administer, monitor, and troubleshoot Linux-based production and customer-facing systems supporting POS integrations
Design, implement, and maintain Ansible-based automation for configuration management, deployments, and system consistency
Diagnose and resolve TCP/IP protocol–level issues , including routing, connectivity, latency, packet loss, and network performance problems
Troubleshoot POS environments , including store networks, on-prem systems, and data transmission between POS, edge devices, and cloud services
Act as an escalation point for complex or recurring incidents, performing root-cause analysis and driving long-term remediation
Perform database troubleshooting, including SQL querying, data validation, and basic performance analysis
Collaborate with Engineering on incidents involving infrastructure, configuration, or application-level defects
Use monitoring and observability tools to identify, analyze, and resolve system and performance issues
Document system architecture, operational procedures, runbooks, and customer-facing technical guidance
Build and maintain internal and external technical knowledge bases
Manage multiple concurrent issues while providing clear, timely communication to customers and internal stakeholders
Participate in off-hours and weekend on-call rotations for mission-critical systems

Qualification

Linux system administrationAnsible automationTCP/IP troubleshootingPOS systems integrationSQL queryingSystem monitoring toolsAnalytical skillsScripting BashScripting PythonProblem-solving skillsCommunication skillsOrganizational skills

Required

Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent experience)
Strong hands-on experience with Linux system administration in production environments
Proven experience with Ansible for automation and configuration management
Solid understanding of the TCP/IP protocol stack and hands-on troubleshooting at the protocol level
Experience supporting or integrating with POS systems or retail technology environments
Working knowledge of databases, including SQL querying and troubleshooting
Familiarity with system monitoring, logging, and alerting tools
3+ years of experience in Systems Engineering, Technical Operations, or advanced Technical Support roles
Strong analytical and problem-solving skills
Excellent written and verbal communication skills with a customer-first mindset
Highly organized and able to manage multiple priorities in a fast-paced environment

Preferred

Experience using Grafana for monitoring, dashboards, and operational visibility
Experience working with Salesforce, particularly in support, case management, or operational workflows
Exposure to IoT, edge devices, or distributed retail environments
Scripting experience (Bash, Python)

Company

AppCard, Inc.

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Founded in 2011 by the team behind ICQ, Dotomi and Jajah—and backed by Peter Thiel, (via Founders Fund), Eric Schmidt (via Innovation endeavors) and Jerry Yang, AppCard disrupts traditional retail sales with its global platform for data-driven marketing.

H1B Sponsorship

AppCard, Inc. has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2022 (1)

Funding

Current Stage
Growth Stage
Total Funding
$26.5M
Key Investors
Alexander Rittweger
2016-02-25Series B· $20M
2013-01-01Series A· $6.5M

Leadership Team

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Yair Goldfinger
Co-Founder & CEO
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Amichay Oren
Co-founder & CTO
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Company data provided by crunchbase