Senior Platform Engineer – Founding Infra & Data

Jobtailor; Mannheim; Vor Ort; EUR 90.000 - 140.000; Vollzeit

Zusammenfassung

Jobtailor is seeking a Kubernetes and database‑performance-focused engineer to own and optimize a SaaS platform infrastructure in a high-availability Kubernetes environment. You will tighten HikariCP, ProxySQL, and InnoDB interactions while reducing latency across multiplexing, routing, and pooling.

Responsibilities include diagnosing contention, long-running transactions, and improving observability with Prometheus and Grafana, collaborating with a 15-engineer team, and shaping the move to

Qualifikationen

• Expertise in ProxySQL configuration and hostgroups.
• Understanding of XtraDB/InnoDB locking models.
• Ability to interpret PERCONA_RECAP or slow query logs.
• Kubernetes, Helm, and infrastructure as code proficiency.
• Prometheus/Grafana observability experience.

Aufgaben

• Own the infrastructure for a Kubernetes-based SaaS platform.
• Fine-tune the connection handshake between HikariCP, ProxySQL, and InnoDB.
• Optimize multiplexing, query routing, and connection pooling to reduce latency.
• Identify and resolve row-level contention and long-running transactions.
• Manage the Kubernetes cluster for high availability.
• Harden pod termination logic and resource scheduling to protect API stability.
• Define roadmap for moving from database-backed queues to high-throughput messaging.
• Collaborate with a team of 15 engineers scaling the SaaS platform.

Kenntnisse

Kubernetes Expertise

ProxySQL Configuration

HikariCP Lifecycle Understanding

Hibernate/JPA transaction management

Infrastructure as Code

Prometheus/Grafana Observability

Observability Tools

Tools

Helm

NATS

RabbitMQ

Redis

ProxySQL

XtraDB

HikariCP

Hibernate

Kubernetes

JobRunr

Quartz

Jobbeschreibung

• Own the infrastructure for a K8s-based SaaS platform serving enterprise clients
• Fine-tune the connection handshake between HikariCP, ProxySQL, and XtraDB
• Optimize multiplexing, query routing, and connection pooling to eliminate latency spikes
• Identify and resolve row-level contention and long-running transactions in JobRunr/Quartz database-backed job queues
• Prevent background processing from blocking the XtraDB buffer pool
• Partner with backend teams to optimize Hibernate-generated SQL and connection usage
• Manage the Kubernetes cluster for high availability
• Harden pod termination logic and resource scheduling to protect API stability
• Define the roadmap for moving from database-backed queues to high-throughput messaging such as NATS, RabbitMQ, or Redis
• Collaborate with a team of 15 engineers scaling the SaaS platform

Requirements

• Expertise in ProxySQL, including configuring mysql_query_rules and hostgroups
• Understanding of XtraDB/InnoDB locking models
• Ability to interpret PERCONA_RECAP or slow query logs
• Understanding of HikariCP lifecycle
• Understanding of Hibernate/JPA transaction management
• Ability to identify connection leaks and unoptimized persistence contexts
• Kubernetes expertise, including kubectl, service discovery, ProxySQL backend mapping, and graceful container shutdowns
• Infrastructure as Code proficiency, for example Helm
• Prometheus/Grafana observability experience
• Application and database proxy Golden Signals monitoring knowledge
• CV, short cover letter, and work references required for application
• German language used in posting; no explicit language requirement stated

Core Competencies

Demonstrates expertise in managing Kubernetes clusters and optimizing database performance for high-throughput SaaS applications. Proficient in ProxySQL, HikariCP, and observability tools like Prometheus and Grafana to ensure API stability and efficient resource utilization.

Highest-signal resume keywords

• Kubernetes Expertise
• ProxySQL Configuration
• HikariCP Lifecycle Understanding
• Infrastructure as Code Proficiency
• Prometheus/Grafana Observability Experience

Hard Skills

• ProxySQL
• XtraDB
• HikariCP
• Hibernate
• Kubernetes
• Infrastructure as Code
• Prometheus
• Grafana
• JobRunr
• Quartz

Industry Keywords

• SaaS
• Database Optimization
• Connection Pooling
• Latency Reduction
• High Availability

Tools & Technologies

• Helm
• NATS
• RabbitMQ
• Redis