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Lead Engineer, Safety & Presence Platform

Lead Engineer, Safety & Presence Platform

XTEN-AVNoida, Republic Of India, IN
2 days ago
Job description

Role Title : Lead Engineer – Safety & Presence Platform

Location : Noida (with 3–4 hours overlap with EST)

Team : Platform Engineering – Safety & Presence

Employment Type : Full-time

Position Summary

Lead a small, high-impact squad (2 senior full-stack engineers with shared DevOps / QA support) to :

  • Deliver a cloud-first, private-site safety & presence MVP in ~3 months.
  • Evolve it into a production-ready system in ~6–7 months.

You will own the architecture, security, and delivery of a real-time eventing & notifications platform (web push / SMS / email) powered by gateways and badges.

  • Experience with LoRaWAN / ChirpStack is not mandatory;
  • you are expected to learn on the job and reach hands-on proficiency within 2–3 weeks.

    Role Responsibilities (Essential Functions)

    Architecture & Delivery Ownership

  • Define and deliver the end-to-end pipeline : gateway → ingest → normalize → zone logic → multi-channel notifications → audit.
  • Establish and track SLIs / SLOs for reliability and performance.
  • Cloud-First Private LNS

  • Stand up and operate a private LoRa Network Server (e.G., AWS IoT Core, The Things Stack, ChirpStack, or another service on VMs / k8s) inside a VPC.
  • Prefer Basics Station (TLS) while also supporting Semtech UDP.
  • Data & API Contracts

  • Author and maintain OpenAPI specifications and a versioning strategy.
  • Design backward-compatible APIs for a responsive web app and / or PWA and partner systems.
  • Security & Compliance

  • Enforce TLS everywhere, KMS-backed secrets, HMAC-signed webhooks, VAPID keys for web push.
  • Apply PII minimization and appropriate access controls.
  • Productization Path

  • Plan and sequence : accounts and RBAC, tenant / site model, licensing and entitlements, upgrades / rollback, diagnostics, and supportability.
  • Team Leadership

  • Coach two senior full-stack ICs.
  • Collaborate closely with in-house DevOps and QA.
  • Drive outcomes with crisp ADRs and operational runbooks.
  • GenAI-Augmented Delivery

  • Use GenAI tools for scaffolding code, tests, documentation, and KT summaries.
  • Maintain strong review gates and quality bars.
  • Day-to-Day Responsibilities (Essential Tasks)

  • Stand up the cloud LNS and create gateway onboarding templates (URIs, certs / keys), cellular fallback, buffering, and monitoring checklists.
  • Implement ingest services (MQTT / webhook) with idempotency, retries with backoff, correlation IDs, and structured logging.
  • Define event envelopes (SOS / telemetry) and BLE-assisted zone logic (RSSI bucketing / smoothing, confidence scoring);
  • validate via walk tests.

  • Build and oversee notification orchestration :
  • Web push via Service Workers / VAPID
  • SMS via MSG91
  • Email via SES / SendGrid
  • with delivery receipts and audits.
  • Guide the PWA operator console : floor-plan overlay, live feed, acknowledgment / escalation flows, filters / search, and “Reset Site” tooling.
  • Establish observability : dashboards for p95 SOS latency, join / uplink confirm rates, gateway online %, and notification success.
  • Create and maintain ADRs, runbooks, and installer / onboarding documentation;
  • lead readiness reviews for Demo → Pilot → GA.

  • Conduct design and PR reviews;
  • unblock engineers;
  • manage a risk register and cut scope when needed to hit dates.

    Educational Qualifications & Experience

    Required

  • Bachelor’s or Master’s degree in Computer Science, Electrical / Computer Engineering, Information Systems, or equivalent practical experience.
  • 7+ years building cloud or event-driven platforms (Node / TypeScript, Go, or C#) with Postgres (or similar), message / broker patterns, and production APIs (OpenAPI).
  • Demonstrated experience building and operating SaaS products (production SLIs / SLOs, on-call / incident playbooks, release management).
  • Preferred

  • Exposure to LoRaWAN (ChirpStack, The Things Stack, AWS IoT Core), Basics Station vs Semtech UDP, and gateway onboarding at scale.
  • Experience with web push (Service Workers / VAPID), SMS / email providers, BLE / beacon-driven zoning, and time-series stores (Timescale / ClickHouse).
  • Background in multi-tenant architecture, entitlements / licensing, and customer onboarding for B2B SaaS.
  • Core Competencies

  • Systems Design & Reliability :
  • Idempotency, rate limiting, pagination, backoff strategies, correlation / traceability, high availability, backup / restore.
  • Security Mindset :
  • Key and secrets management, TLS, HMAC, authN / Z, privacy-by-design.
  • Delivery Leadership :
  • Scope control, risk management, stakeholder communication, crisp documentation.
  • Customer Empathy :
  • Operator-first UX, fast incident triage, and focus on measurable outcomes (latency, delivery success, etc.).
  • Learning Agility :
  • Ability to master LoRa fundamentals quickly and translate them into robust runbooks.
  • Tools & Technologies (Nice to Have;
  • Not All Required Day One)

  • ChirpStack;
  • Basics Station / UDP;
  • MQTT / Webhooks;
  • Node / TypeScript or Go or C#;
  • Postgres / Timescale;
  • Redis / queues;
  • React / TypeScript PWA;
  • Service Workers / VAPID;
  • MSG91 / Twilio;
  • Amazon SES / SendGrid;
  • OpenAPI / Swagger;
  • Docker / k8s;
  • Grafana / Prometheus / OpenTelemetry;
  • KMS / Secrets Manager;
  • ADRs / Docs-as-Code;
  • GenAI copilots.

    Performance Outcomes (First 90 Days)

    By Day 30

  • Cloud LNS live;
  • 2 gateways onboarded.

  • Event envelope and zone schema approved.
  • OpenAPI v0 published.
  • SOS observed end-to-end in staging.
  • LoRa basics demoed independently.
  • By Day 60

  • Demo slice : SOS ≤10s p95;
  • ack → push / SMS / email with receipts.

  • 3–5 zones correct in walk tests.
  • KPI dashboard live.
  • By Day 90

  • Hardened demo : retries / limits, audit timeline, PII review, gateway templates.
  • Phase-B design (RBAC / licensing) signed off.
  • Work Conditions

  • Remote-friendly within India;
  • periodic travel may be required for gateway bring-up or field walk tests.

  • Collaboration across time zones as needed for stakeholders.
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    Lead Platform Engineer • Noida, Republic Of India, IN

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