Software Development Engineer 2

About Boon

Boon (by Swajal) builds IoT-enabled drinking-water systems used by leading hotels, offices, and communities. Our "UltraOsmosis + WaterAI" stack monitors water quality in real time, powers predictive maintenance, and enables plastic-free hydration at scale.

The Role

We're hiring an
SDE II (Backend)
to own and scale our IoT backend: secure device connectivity, telemetry ingestion, time-series data pipelines, APIs for apps/dashboards, and reliability at thousands of edge devices. You'll design services, write production code, lead small projects end-to-end, and mentor junior engineers.

What you'll do

• Own services end-to-end:
  design docs, implementation, tests, IaC, and production rollout.
• IoT data plane:
  MQTT topics & policies, device registry/shadows, OTA update flows, secure provisioning.
• Data pipelines:
  high-volume ingestion → storage → query (time-series + metadata).
• APIs & integrations:
  build/maintain internal & public APIs for apps, dashboards, partner integrations.
• Reliability & scale:
  SLOs, error budgets, autoscaling, back-pressure, dead-lettering, retries.
• Security & compliance:
  least-privilege IAM, secrets, audit logging, encryption in transit/at rest.
• Observability:
  logs/metrics/traces, runbooks, dashboards, on-call participation.
• Quality:
  code reviews, unit/contract/integration tests, CI/CD, performance profiling.
• Tech leadership:
  break down work, align stakeholders, mentor SDE-I/interns.

Our stack (experience with analogous tech is fine)

• AWS IoT Core
  , Device Registry/Shadow,
  API Gateway
  ,
  Lambda
  ,
  ECS/Fargate
  or
  EKS
  ,
  S3
  ,
  DynamoDB
  ,
  Timestream
  (or TimescaleDB/Influx),
  Kinesis/SQS/SNS
  ,
  CloudWatch
  ,
  Cognito
  ,
  IAM
  .
• Protocols:
  MQTT, HTTP; familiarity with Modbus/LoRaWAN is a plus.
• Languages:
  or Python/Go; SQL/no-SQL data modeling.
• Infra:
  Terraform/CDK, GitHub Actions, containerization.
• Obs:
  OpenTelemetry, Grafana/CloudWatch.

Must-have qualifications

• 3–6 years' backend experience, with
  at least 2 years on AWS
  in production.
• Built and operated
  event-driven
  or
  time-series
  systems handling high-volume telemetry.
• Strong in
  API design
  ,
  data modeling
  , and
  distributed systems fundamentals
  (idempotency, deduplication, retries, ordering, consistency).
• Hands-on with
  AWS IoT Core + MQTT
  (policies, certificates, shadows) OR equivalent IoT platform.
• Proficient with
  DynamoDB/Timestream (or similar)
  , stream processing (Kinesis/SQS/Kafka), and
  IaC
  .
• Solid testing discipline and CI/CD; can debug complex issues across services.
• Clear communication, product sensibility, and the ability to lead 1–2 engineers on a workstream.

Nice-to-have

• OTA update pipelines, device provisioning at factory, PKI/cert management.
• Edge computing patterns, offline sync, back-pressure at gateways.
• Experience with Grafana/Loki/Tempo, Prometheus, or CloudWatch X-Ray.
• Security reviews/threat modeling for IoT fleets.
• Exposure to
  
  (for internal tools) is a bonus.

Example projects you might own in your first 90 days

• Telemetry pipeline v2:
  Kinesis → Lambda → Timestream with partition strategy, TTLs, and cost guards.
• Device shadow service:
  unify configs/alerts across WaterCube/Refill SKUs; safe rollout guards.
• Fleet OTA:
  signed firmware/artifact hosting, staged rollouts, automatic rollback on failure signals.
• Partner API:
  rate-limited, token-scoped endpoints for enterprise customers; audit trails & webhooks.

How we measure success

• Uptime & latency SLOs met; clear runbooks and dashboards.
• Cost per device and data retention within targets.
• Safe releases with automated rollbacks; low MTTR on incidents.
• Developer experience: faster CI, better tests, fewer regressions.
• Mentorship: peers learn from your reviews and docs.

Why Boon

• Mission with tangible impact: clean water, less plastic, happier guests.
• Ownership of meaningful systems at real-world scale.
• Pragmatic engineering culture: clarity, outcomes, and craftsmanship.