Technical Lead/Solution Architect

Location: Noida (EST overlap 3-4 hours) Team: Platform Engineering - Safety & Presence Employment Type: Full-time Position SummaryLead a small squad (2 senior full-stack engineers with shared DevOps/QA) to deliver a cloud-first, private-site safety/presence MVP in ~3 months and evolve it to a production ready system in ~6–7 months.  Own architecture, security, and delivery for a real-time eventing & notifications platform (web push/SMS/email) fed by gateways and badges. LoRaWAN/ChirpStack is learn-on-the-job expectation, to reach hands-on proficiency within 2–3 weeks. Essential Functions (Role Responsibilities)Architecture & Delivery Ownership: Define and deliver the end-to-end pipeline (gateway → ingest → normalize → zone logic → multi-channel notifications → audit) with SLIs/SLOs. Cloud-First Private LNS: Stand up and operate a private Network Server (e.g., AWS IoT core, Things Stack, ChirpStack or another service on VMs/k8s) in the VPC; prefer Basics Station (TLS), support Semtech UDP. Data & API Contracts: Author OpenAPI specs, versioning strategy, and backward-compatible interfaces for a responsive webapp and/or PWA and partner systems. Security & Compliance: Enforce TLS, KMS-backed secrets, HMAC-signed webhooks, VAPID keys for web push, PII minimization, access controls. Productization Path: Plan and sequence accounts/RBAC, tenant/site model, licensing/entitlements, upgrades/rollback, diagnostics, and supportability. Team Leadership: Coach two senior full-stack ICs; collaborate tightly with in-house DevOps & QA; drive outcomes with crisp ADRs/runbooks. GenAI-Augmented Delivery: Use GenAI for scaffolding code/tests/docs and KT summaries; maintain review gates and quality bars. Essential Tasks (Day-to-Day)Stand up cloud LNS; create gateway onboarding templates (URIs, certs/keys), cellular fallback, buffering, and monitoring checklists. Implement ingest services (MQTT/webhook) with idempotency, retries/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/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, ack/escalation, filters/search, and “Reset Site” tooling. Establish observability: dashboards for p95 SOS latency, join/uplink confirm rates, gateway online %, notification success. Create and maintain ADRs, runbooks, and installer/onboarding docs; lead readiness reviews for Demo → Pilot → GA. Conduct design/PR reviews; unblock engineers; manage risk register and cut scope when needed to hit dates. (Multi region system architecture design know-how) Educational Qualifications & ExperienceRequired: 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 or The Things Stack, AWS IoT Core), Basics Station vs Semtech UDP, 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 CompetenciesSystems Design & Reliability: Idempotency, rate limiting, pagination, backoff, correlation/traceability, HA/backup/restore. Security Mindset: Key/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 measurable outcomes (latency, delivery success). Learning Agility: Ability to master LoRa fundamentals in a short period and translate them into robust runbooks. Tools & Technologies (nice-to-know; not all required day one) ChirpStack • Basics Station/UDP • MQTT/Webhooks • Node/TS 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) Day 30: Cloud LNS live; 2 gateways onboarded; event envelope & zone schema approved; OpenAPI v0 published; SOS observed E2E in staging; LoRa basics demoed by self. Day 60: Demo slice: SOS ≤10s p95, ack → push/SMS/email with receipts; 3–5 zones correct in walk tests; KPI dashboard live. 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 might be required for gateway bring-up or field walk tests. Collaboration across time zones as needed for stakeholders.