With 25+ years of Java platform experience, we help teams tackle complex challenges around migrations, performance, and architecture. Whether you need to modernize a legacy stack, solve bottlenecks, or harden your platform's security, you get direct access to senior expertise without long lead times.
Migrations & platform modernization
From monolith to microservices, physical servers to containers, or legacy application servers to modern stacks. We handle the analysis, plan the transition, and guide execution so your team navigates the migration smoothly without disrupting production. We explain what we changed and why, so your team can maintain it going forward.
What this looks like in practice
Keycloak production hardening. Deployed Keycloak with WebAuthn 2FA, brute-force protection, and OIDC/SAML federation across infrastructure tooling. Two-realm architecture separating internal admin from customer access. Experience running Keycloak both on Kubernetes and standalone, choosing the right deployment model per situation.
Java 21 to 25 LTS migration. Updated compiler targets, container base images, test frameworks, and connection pool sizing across a Quarkus application. Zero production issues.
Docker Compose to Kubernetes. Migrated legacy Docker Compose stacks to Kubernetes, including fixing API version compatibility breakage and container restart policy gotchas.
Performance analysis & troubleshooting
Slow response times, memory issues, or unexplained crashes? We dig into the stack, analyze JVM metrics, query patterns, databases, and infrastructure, then deliver concrete fixes with measurements that prove they work.
What this looks like in practice
PostgreSQL tuning for monitoring platform. Stock defaults on a server with plenty of memory. Tuned memory allocation, checkpoint settings, and maintenance parameters to match actual workload. Diagnosed and fixed bulk-delete freeze spikes, reclaimed gigabytes from bloated tables. Result: zero freeze spikes.
Observability noise reduction. Debug logs consuming 95% of log volume: 2.4 million lines per hour cluster-wide. Added path exclusions and drop stages. Result: 97.6% reduction to 51K lines per hour.
Database optimization. Heavy queries on large datasets without proper indexing. Analyzed query planner behavior, recommended the right index strategy and query timeouts.
Security & architecture reviews
Sometimes you need someone to look at your setup with fresh eyes. We review your architecture, identify risks, and harden your platform. From identity management to intrusion detection: we don't just fix it, we document the reasoning so your team can maintain it. No lengthy reports, just actionable insights.
What this looks like in practice
Multi-site identity & secrets architecture. Designed and deployed OpenBAO (Raft cluster across 3 datacenters) and Keycloak SSO with WebAuthn across admin tooling. Chose the right deployment model for each component based on dependency chains and operational requirements.
CrowdSec IDS/IPS/WAF. Centralized intrusion detection with syslog aggregation from network equipment. OWASP CRS rules on HAProxy, path-based scanner blocking, automated IP blocking via community and local threat intelligence.
Kubernetes disaster recovery. Encryption keys for sealed secrets lost after infrastructure change. Recovered from etcd backup, restored all secrets. Cluster operational same day.
Vulnerability management pipeline. Fleet-wide Trivy scanning with custom dashboard for change detection: new findings, resolved findings, severity shifts. ISO 27001-aligned workflow with suppression rules and expiry tracking.
Share what you're facing and we'll schedule a conversation within a week to explore how we can help.
Start with an email
Email support@coffeesprout.com with a short description of your challenge and timelines. We respond within one business day with honest next steps.
Email support@coffeesprout.com