Technical Lead/Solution Architect

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.