Top Tech Jobs & Startup Jobs

Lead vulnerability management, tune SIEM detection, perform incident triage and root-cause analysis, apply STIGs and security baselines, run vulnerability scans (Nessus/Tenable/ACAS), analyze network traffic and packet captures, automate security operations with Python/Bash/PowerShell, support RMF/ATO workflows, mentor junior engineers, and contribute to proposal efforts for a DoD program.

Support end-to-end payroll and benefits administration including payroll processing, AP for payroll, journal entries, reconciliations, filings, year-end and audit work, and payroll software implementation support. Collaborate with HR on benefits and ensure confidentiality and accuracy.

Serve as the branch's primary client-facing representative: process transactions, open and maintain accounts, consult clients on products, identify referral and sales opportunities, support lending processes, and ensure compliance and accurate cash handling. Build relationships through proactive communication and appointments to meet client financial needs.

Support international marketing operations by coordinating campaigns, managing digital assets, localizing materials, onboarding social accounts, maintaining calendars and trackers, compiling performance results, and liaising between the Global Support Center and field marketing teams.

Provide administrative and operational support to the Manager of Operations and Senior Director, including payroll and timesheet entry, billing preparation, calendar and meeting coordination, vendor and partner communication, data tracking and reporting, job requisition management via ADP RM, and general office duties to ensure smooth site operations and stakeholder communication.

Build and maintain data and model layers for an AI decision‑support system: data ingestion, probabilistic record matching, calibrated scoring, provenance‑tracked retrieval and grounded generation, and secure production pipelines. Ensure explainability, auditability, and accredited deployment in a controlled government cloud environment.

Oversee day-to-day accounting operations including general ledger, payables, receivables, payroll, reconciliations and month-end close. Prepare and review journal entries, maintain chart of accounts, manage vendor and client billing, monitor AR aging, record cash receipts, support financial statement preparation and tax documentation, supervise accounting support staff, and improve accounting workflows and internal controls.

Lead and build Mosaic's marketing function: define product positioning and messaging, develop go-to-market strategies, produce content and SEO-driven growth, own digital presence and website, partner with Sales and Product to generate pipeline and customer advocacy, and measure marketing performance to drive adoption and retention.

Serve as a strategic advisor to executive leadership on AI infrastructure, cloud and HPC strategy. Evaluate emerging AI technologies and infrastructure investments, support technical due diligence for partnerships and M&A, develop executive presentations and decision frameworks, and advise on governance, responsible AI, data privacy, and regulatory trends. Collaborate cross-functionally to translate business priorities into actionable technology strategies and assess risks, scalability, and long-term operational economics.

Handle accounts payable, accounts receivable, cash reconciliation, payroll processing, guest billing support, vendor communication, monthly balance sheet reconciliations, and assist Controller with month-end close while maintaining organized records and supporting property teams.