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Scaling Investor-Backed Startups & Growth Companies
IoT Platform Architect – Backend Lead
Location
Pakistan
Posted
74 days ago
Salary
0
Seniority
Senior
Job Description
IoT Platform Architect – Backend Lead
Flatgigs
• Design the full end-to-end IoT platform architecture: device connectivity layer → MQTT/protocol ingestion → stream processing → time-series storage → REST/GraphQL API layer → real-time WebSocket delivery • Define the multi-tenant data model: strict data isolation between customers, tenant-scoped API tokens, row-level security • Design the device lifecycle system: provisioning, X.509/JWT authentication, device registry, status tracking, decommissioning • Architect the protocol abstraction layer so MQTT, Modbus, OPC-UA, CoAP, and HTTP devices all normalise to the same internal data model • Design a configurable rule engine: event-condition-action rules for alerts, automations, and integrations — no code required from customers • Plan OTA firmware update management: secure delivery, versioning, rollback, fleet orchestration • Write Architecture Decision Records (ADRs) for every major technical choice — nothing undocumented • Design the scaling path from 100 devices (pilot) to 500,000+ (production) without structural rework • Build core platform services from scratch: device management, telemetry ingestion, rule engine, notification/alerting, OTA update, multi-tenant API gateway • Develop REST and GraphQL APIs with full OpenAPI specification — version-controlled from Day 1 • Implement WebSocket and SSE endpoints for real-time telemetry delivery to web and mobile clients • Build device command-and-control with acknowledgement, retry logic, and timeout handling • Implement device shadow service: last-known state of every device accessible even when offline • Write unit, integration, and load tests — no service reaches staging without test coverage • Own service reliability: SLO definitions, alerting runbooks, on-call incident response • Provision and manage all AWS environments (dev, staging, production) using Terraform — no click-ops • Configure AWS IoT Core: MQTT endpoint, topic namespace, rules engine, certificate management • Set up CI/CD pipelines via GitHub Actions for all backend services • Configure CloudWatch monitoring, log aggregation, and automated health alerts • Manage IAM for all team members — least-privilege access, no shared credentials • Hand off infrastructure fully documented when a DevOps engineer joins in Phase 2
Job Requirements
- 7–12 years software or systems engineering; minimum 4 years specifically building IoT platform backends or connected product infrastructure
- Expert-level, hands-on experience with AWS IoT Core or Azure IoT Hub — production deployments, not tutorials ⚑ NON-NEGOTIABLE
- Expert MQTT knowledge: v3.1 and v5.0, topic hierarchy design, QoS levels, retained messages, Last Will & Testament, broker sizing and clustering ⚑ NON-NEGOTIABLE
- Proficiency in Python and Node.js/TypeScript for production backend services — Go is a strong advantage
- Hands-on experience with a time-series database: InfluxDB, TimescaleDB, or AWS Timestream
- Terraform or AWS CloudFormation — you provision cloud infrastructure programmatically, not through the console
- Multi-tenant SaaS backend architecture: data isolation patterns, tenant-scoped access control, shared infrastructure design
- Security fundamentals applied in practice: TLS/mTLS, X.509 certificates, OAuth 2.0, JWT, secrets management (Vault or AWS Secrets Manager)
- Message broker or streaming experience: Kafka, RabbitMQ, AWS Kinesis, or AWS IoT Rules Engine
- Proven ability to work autonomously at a senior level — makes decisions, documents rationale, flags risks without needing to be prompted ⚑ REMOTE DISCIPLINE
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