# QA Software (Load & Performance) Test Engineer at Cuculus Gmbh

> India · Unspecified · QA / Test · open. Source: https://alderhq.app/jobs/personio%3Acuculus-gmbh%3A2734719 (read 2026-11-09).

## Facts (observed)

- Company: [Cuculus Gmbh](https://alderhq.app/companies/cuculus-gmbh)
- Location text: Bengaluru; India
- Where it can be done from (inferred): India (evidence: "Location lists "bengaluru"")
- Posted: 2026-07-30 (102 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-08
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://cuculus-gmbh.jobs.personio.de/job/2734719
- Skills listed (inferred): JavaScript, Python, Java, PostgreSQL, Kafka, Kubernetes, Docker, Distributed systems

## Pay and sponsorship

- Posted pay: not posted

## Description (the employer's text)

### Shape the utilities market of the future with us!

The engineer will define realistic load profiles, simulate production-like traffic, identify bottlenecks, measure system capacity, and provide performance recommendations before release or customer deployment.

### What is the role about?

Design and execute load, stress, scalability, spike, and failover performance tests for HES/MDM product

Create realistic test scenarios covering:

- ZONOS API and Southbound API
- VEE processing
- MDUS / data ingestion flows
- Device events, alarms, meter reads, topology, and profile data
- Kafka/streaming pipelines
- Database-heavy operations
- ZCP user workflows where relevant
- response time
- throughput
- transactions per second
- message ingestion rate
- processing latency
- CPU/memory usage
- database load
- Kafka lag
- error rate
- queue depth
Monitor performance using tools such as “Prometheus, Grafana”.

Analyze bottlenecks across:

- APIs
- database queries
- Kafka topics/partitions
- backend services
- VEE jobs
- process engine
- network and infrastructure
- JVM/container resources
Work with QA, DevOps, backend developers, product owners, and customer delivery teams to define acceptance criteria and performance baselines.

### Must-haves (to thrive in this role)

3+ years of experience in performance testing, load testing, or performance engineering.

Had experience in the Energy Management utility (Meter data management, HES ….)

Strong understanding of:

- REST APIs
- authentication flows
- asynchronous processing
- queues and event streaming
- distributed systems
- microservices performance behavior
- Prometheus
- Grafana
- JVM or container metrics
- PostgreSQL
- Oracle
Ability to analyze logs, metrics, traces, and system behavior under load.

Strong scripting skills in at least one language:

- Python
- JavaScript
- Groovy
- Bash
- Java
### Nice-to-haves (great if you have them, but not a dealbreaker)

- Kafka performance testing
- AMI / smart metering systems
- MDMS / MDM platforms
- VEE validation and estimation workloads
- DLMS/COSEM concepts
- large-scale device simulation
- API Director / ReadyAPI
- Kubernetes or containerized environments
- CI/CD integration for performance tests.

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3Acuculus-gmbh%3A2734719 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.