serp_jobs.filters_job_card.part_time Engineer serp_jobs.h1.location_city

Job Title : Java Engineer / Java Platform Engineer

Location : TX / Dallas

Duration : 3 Months CTH

Job Description :

IIoT Platform (On Prem Kubernetes MQTT TimescaleDB Schema Registry)

About the role develop the backend of Nexus : build resilient microservices that speak MQTT enforce data contracts via Forge and deliver high throughput reliable ingest into TimescaleDB on on prem Kubernetes. Drive service SLIs / SLOs security and multi tenant operations. Partner with OT (often via Ignition) while keeping the focus on backend reliability and developer experience. Optional secure hybrid to AWS for backup / analytics.

Key Responsibilities

Backend services and APIs

Build stateless performant services (Go / Java / Python) for ingest validation enrichment and persistence.

Define versioned contracts (REST / gRPC) ensure backward compatibility idempotency and robust retries.

Provide shared libraries for schema validation authN / Z tracing.

MQTT messaging

Implement producer / consumer services with QoS 0 / 1 retained messages shared subs session persistence.

Design tenant aware topic hierarchies ACLs and secure device onboarding.

Enforce TLS / mTLS certificate rotation; optimize throughput with batching and backpressure.

Data contracts (Forge) and CI enforcement

Model telemetry / events with JSON Schema; strict compatibility rules and gated CI checks.

Validate in the data plane; route bad payloads to DLQ with replay tooling.

Lead producer / consumer versioning and migrations.

Time series storage (TimescaleDB)

Design hypertables compression retention; high throughput ingest with ordering dedupe upserts.

Optimize reads via continuous aggregates and indexes; own backup / restore and PITR.

On prem Kubernetes

Ship Helm charts; manage Deployments / StatefulSets HPA / VPA probes resource tuning.

Establish end to end observability (metrics / traces / logs) actionable alerts; GitOps for promotion / rollback.

Security multi tenancy and reliability

Zero trust defaults : mTLS RBAC hardening network policies per tenant isolation.

Secrets / PKI management (Vault / KMS) audit logging; ingress / egress controls and rate limits.

Define SLIs / SLOs; canary / blue green chaos testing; runbooks on call post mortems; DLQ / quarantine and replay.

Collaboration and delivery

Strong PR hygiene branch protections semantic versioning release tagging in GitHub.

Document ADRs runbooks and APIs; align OT tag models / payloads with backend contracts.

Required qualifications

5 years building production backend services in Go / Java / Javascript / C / Python.

Deep MQTT understanding (EMQX / HiveMQ / Mosquitto) : QoS 0 / 1 retained shared subs sessions ACLs TLS / mTLS.

On prem Kubernetes or docker : Helm compose observability autoscaling GitOps secure multi tenant ops.

Time Series Database / historian : hypertables compression retention continuous aggregates performance backup / restore.

Schema registry with JSON Schema; CI enforced compatibility.

CI / CD (GitHub Actions or similar) : build / test canary / blue green artifacts automated rollbacks.

Security : PKI certificates least privilege network segmentation Vault / KMS audit logging.

Nice to have

Ignition (Transmission / Engine) OPC UA / Modbus / EtherNet / IP.

Kafka / Pulsar and MQTT bridges; CDC / outbox patterns.

IaC (Terraform / Ansible) Rancher / OpenShift; edge (K3s).

Service mesh (Istio / Linkerd) for mTLS / traffic policy.

Hybrid AWS for backup / analytics (ECR / S3 / Glacier secure tunneling).

Keywords : MQTT Java Python Kubernetes JSON CI / CD API JavaScript

Key Skills

Access Control System,Engineering,Bar Management,Jpa,Law,Jdbc

Employment Type : Full Time

Experience : years

Vacancy : 1