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I will fix and optimize your java spring boot app

O
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O
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Oleksandr M.

About this gig

Are slow endpoints, intermittent errors or surprising crashes blocking your roadmap? I am a senior Java developer and software architect with more than ten years building and operating enterprise Spring Boot systems. I deliver practical changes that reduce latency, increase throughput and make code easier to maintain. I prepare your app for real production traffic.


Examples of what I provide:

  • Fix critical exceptions and production errors
  • Optimize database queries, add indexes and tune JPA or Hibernate interactions
  • Profile and reduce API response times including GC, thread pool and connection pool tuning
  • Refactor hotspots to lower technical debt and increase maintainability
  • Containerize services and provide CI and CD setup guidance for Docker and common cloud platforms
  • Add monitoring and logging with actionable alerts
  • Provide benchmarks and a concise technical report with clear next steps


Deliverables depend on selected package. Enterprise package includes architecture report and hands on deployment guidance. All packages include clear milestones and measurable results.

Get to know Oleksandr M.

Oleksandr M.

Tech Lead and Senior Java Developer: SaaS, AI and Custom Development

  • FromUnited States
  • Member sinceJun 2022
  • Languages

    English, Ukrainian, Polish
I’m Oleksandr, CEO of Calaton Systems, a leading software development company specializing in custom web & mobile solutions, SaaS, and AI-powered innovations. With 10+ years of experience, I help businesses build scalable, high-performance software tailored to their needs. 🔹 What I Offer: ✔ Custom Web & Mobile Development (React, Node.js, Java, Python) ✔ SaaS & AI Solutions (Chatbots, Automation, Predictive Analytics) ✔ Cloud & DevOps (AWS, Google Cloud, Kubernetes) 💡 Let’s turn your idea into reality! Contact me today. 🚀

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