Looks Like This Service Is On Hold

I will fix sql server, postgresql and nosql

S
serpux
S
serpux
Sergey S
fix sql server, postgresql and nosql
Full Screen
fix sql server, postgresql and nosql

About this gig

About me

- 20+ years of experience in data modeling and performance tuning

- I build fast and resilient storage for realworld workloads


What I fix

- Slow queries, wrong execution plans, missing/redundant indexes

- Locks and deadlocks, transaction contention and escalation

- Connection leaks, pool exhaustion, timeouts

- EF Core: N+1, improper Include/Select, inefficient migrations

- Schemas/migrations: mismatches, corruption, rollbacks


Supported DBMS

- SQL Server, PostgreSQL, MySQL, SQLite

- NoSQL: MongoDB (documents), Redis (cache, keyvalue)


Process

1) Diagnostics: profiling, stats, indexes, plans, metrics

2) Improvement plan: quick wins + roadmap

3) Implement fixes, tests, monitoring

4) Documentation and ops recommendations


Deliverables

- Measurable speedup, before/after report, clear migration scripts

- Recommendations for scaling and observability

  • Programming language

    • Other

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Databases
    • Testing procedures

  • Frontend framework

    • React.js
    • AngularJS
    • Vue.js
    • jQuery
    • Bootstrap

  • Backend framework

    • Other

Get to know Sergey S

Sergey S
  • FromKazakhstan
  • Member sinceDec 2024

  • Languages

    English
I am a .NET developer with 20 years of experience, specializing in fintech projects, including high-load systems and smaller applications. My expertise covers backend development, databases, and message queues, ensuring reliable and scalable solutions. I excel at performance optimization, bug fixing, and architectural design. If you need a professional to develop APIs, debug .NET applications, or consult on architecture and scaling, I’m here to help!

Related tags