• Must possess an active Secret Clearance • Horizon Industries Limited (Horizon) is a dynamic IT and Management Consulting firm based in the Washington, DC area. Founded in 1996, Horizon Industries Limited (Horizon) has evolved into a company of highly qualified professionals that provides full-cycle IT Consultant and Management support in both the private and public sectors. • Horizon’s culture is based on our core values, and we PRIDE ourselves on a diverse, employee, and family-centric approach.

• Administer and optimize GTM tools that integrate with Salesforce (e.g., CPQ, sales engagement, lead routing, enrichment, forecasting, contract tools) • Take ownership of day-to-day configuration, support, and improvements across the RevOps tech stack • Ensure systems work together cleanly with reliable data flows and minimal manual effort • Work hand-in-hand with our Salesforce Administrator on shared objects, workflows, automations, and reporting • Maintain a strong working knowledge of Salesforce data models, permissions, and flows to support integrations and GTM processes • Support Salesforce enhancements as needed, without being the primary platform owner • Support and optimize quote-to-cash workflows inside Salesforce • Partner with Sales Ops and Deal Desk on pricing, packaging, approvals, and deal configuration • Translate RevOps, Sales, Marketing, and CS requirements into scalable system solutions • Identify inefficiencies and automate manual or error-prone processes • Build and maintain documentation, workflows, and lightweight training for end users • Help establish best practices for data quality, system governance, and change management • Participate in tool evaluation and implementation as the company grows • Balance speed and structure — shipping improvements quickly while keeping long-term scalability in mind

• Own the design, administration, and optimization of ProScore’s AWS infrastructure across production and non-production environments • Architect highly available, fault-tolerant, and scalable systems to support API-driven and data-intensive workloads • Lead infrastructure automation efforts using infrastructure-as-code (Terraform, CloudFormation, or similar) • Define and enforce operational standards, monitoring strategies, and alerting best practices • Lead incident response, root cause analysis, and post-mortem reviews • Design and maintain backup, disaster recovery, and business continuity plans • Implement and oversee AWS security best practices (IAM, network segmentation, encryption, access controls) • Collaborate with engineering teams on CI/CD pipelines, deployment strategies, and system architecture decisions • Mentor junior engineers and serve as a technical escalation point for systems-related issues • Maintain clear documentation, architecture diagrams, and operational runbooks

Sharetru is a secure managed file transfer (MFT) platform trusted by organizations with high security, compliance, and availability requirements. We operate infrastructure across multiple data centers and network providers while supporting customers subject to SOC 2, HIPAA, and FedRAMP-aligned controls. Our environment is Linux-first, security-focused, and built for reliability at scale. This role is for someone who thrives in complex systems, values automation, and understands that production stability matters more than clever shortcuts. Why This Role Matters This role is critical to the reliability and security of Sharetru’s platform. The systems you manage directly support customer data, compliance commitments, and business continuity. We’re looking for someone who understands that good infrastructure is quiet, boring, and deliberate. What You'll Do As a Senior Systems Administrator, you will be responsible for the design, operation, hardening, and reliability of our Linux infrastructure across multiple networks and data centers including: - Administer and harden Red Hat Enterprise Linux/Rocky Linux systems across production, staging, and internal networks - Operate infrastructure spanning multiple data centers, including segmented networks, DMZs, and private backend tiers - Manage and secure services including: - Apache / PHP-FPM - SFTP / FTPS (ProFTPD or equivalent) - MySQL / Percona (including Galera clusters and proxies) - HAProxy / reverse proxies / WAF-style architectures - Design and maintain high-availability and fault-tolerant systems - Implement and maintain security controls: - SELinux (enforcing, custom policies) - iptables / nftables / ipset - TLS hardening (FIPS-aware where applicable) - MFA, access controls, and least-privilege enforcement - Support and contribute to compliance efforts (SOC 2, HIPAA, FedRAMP-aligned controls), including evidence collection and control validation - Automate system configuration and maintenance using Ansible, shell scripting, and/or Python - Troubleshoot complex production issues across OS, network, and application layers - Participate in change management, incident response, and root cause analysis - Collaborate closely with engineering, support, and compliance teams to keep systems stable, secure, and auditable - Log into systems, read logs, understand packet flow, and know why something is not working as expected.