Precision Timing Protocol Specialist

2 weeks ago

Hyderabad, India SafeSpace Global Full time

Location: Hyderabad, India

About the engagement

Our edge Box is the campus time authority. We need a specialist to design and validate precise clock discipline across cameras, mics, and sensors using PTP (IEEE-1588), with NTP/chrony fallbacks, so cross-modal CEP remains trustworthy.

Time: 3–6 hrs/week during design/commissioning;
ad-hoc thereafter. Location: Remote.

Works with: Edge Perf/Sync engineer, Rohit (platform), DSP consultant (for Δt budgets).

What you’ll do

  • Design campus timing architecture: grandmaster selection (GNSS vs Box), boundary/transparent clocks, VLAN/QoS.
  • Deploy and tune linuxptp (ptp4l, phc2sys, pmc) and chrony;
    document NIC/switch configs (Cisco/Arista/Juniper or equivalent).
  • Establish acceptance tests: skew/jitter targets, wander, step response;
    create Grafana dashboards for drift and holdover.
  • Write commissioning SOPs: firmware, servo parameters, delay mechanisms (E2E vs P2P), announce intervals, clock classes.
  • Define failure modes & fallbacks: holdover behavior, NTP degrade, alarms when skew >
    thresholds.

Must-have

  • 7+ years with PTP in production (broadcast/industrial/finance/AVB/gPTP).
  • Hands-on with boundary/transparent clock switches, NIC PHC, and Linux timing stack.
  • Measurement discipline: how to prove sub-millisecond sync on LAN;
    tooling & methods.

Nice-to-have

  • Multi-site timing over WAN;
    GNSS grandmaster designand antenna siting.
  • Experience aligning timing for audio arrays and camera fleets simultaneously.
  • Security hardening for PTP/NTP (ACLs, VLANs, management plane).

Deliverables (first 3–5 weeks)

  • Written Timing Design Doc (topology, configs, targets) + switch/NIC templates.
  • Commissioning checklist & training for our engineers.
  • Dashboards and alerting (clock skew histograms, offset heatmaps);
    final sign-off report with measured p95/p99 skew.

Selection Criteria:

· Live/Whiteboard/IDE (90-120 min) around Architecture design, Linux timing stack, Commissioning & measurement, Failure modes & fallbacks, Security & Ops

  • · Take-Home (<
    6hours, due in 48h)


Next steps: If interested please email your cover letter and resume to

Ashwin at ashwin.jaiswal@safespaceglobal.ai

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