You will get an expert React or Next.js production issue fixed
Project details
Production issues in React and Next.js often involve more than one broken component: state, rendering, API contracts, authentication, caching, build configuration, deployment, or infrastructure may all contribute.
I will investigate the problem as a hands-on CTO and Full-Stack Architect with 20+ years of engineering experience. You will receive an evidence-based diagnosis, a practical fix plan, and—depending on the selected tier—the implemented fix, documentation, and clear code comments.
I work across React, Next.js, TypeScript, Node.js, NestJS, REST APIs, OAuth/OIDC, PostgreSQL, Redis, Docker, CI/CD, and production monitoring. Before changing code, I reproduce the issue, trace the full execution path, and separate the root cause from secondary symptoms.
This project is a strong fit for production errors, intermittent bugs, SSR or hydration failures, authentication and API issues, performance regressions, and build or deployment failures. If the real scope is larger than the selected package, I will identify that early and explain the safest next step before expanding the work.
I will investigate the problem as a hands-on CTO and Full-Stack Architect with 20+ years of engineering experience. You will receive an evidence-based diagnosis, a practical fix plan, and—depending on the selected tier—the implemented fix, documentation, and clear code comments.
I work across React, Next.js, TypeScript, Node.js, NestJS, REST APIs, OAuth/OIDC, PostgreSQL, Redis, Docker, CI/CD, and production monitoring. Before changing code, I reproduce the issue, trace the full execution path, and separate the root cause from secondary symptoms.
This project is a strong fit for production errors, intermittent bugs, SSR or hydration failures, authentication and API issues, performance regressions, and build or deployment failures. If the real scope is larger than the selected package, I will identify that early and explain the safest next step before expanding the work.
What's included
| Service Tiers |
Starter
$120
|
Standard
$360
|
Advanced
$720
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 0 | 1 | 2 |
Bug Investigation | - | - | - |
Fix Documentation | - | - | - |
Detailed Code Comments | - | - | - |
Frequently asked questions
About Igor
Hands-on CTO | Full-Stack Architect | React, Node.js & DevOps
Vita-Poshtova, Ukraine - 10:05 pm local time
I’m a hands-on CTO, Tech Lead, and Full-Stack Architect with 20+ years of experience across software engineering, infrastructure, high-load products, and mission-critical systems.
I help teams ship reliable web and mobile products, modernize legacy platforms, solve production issues, and improve engineering delivery.
I can help you with:
• Full-stack architecture and technical strategy
• React, React Native, TypeScript, JavaScript, Node.js, Express, and NestJS
• Web and mobile product development, SSR, real-time features, and API integrations
• Production debugging, performance improvements, and technical debt reduction
• Docker, Kubernetes, GitLab CI/CD, Nginx, HAProxy, Sentry, ELK, and monitoring
• PostgreSQL, MySQL, CouchDB, Redis, Cassandra, Neo4J, and RabbitMQ
• OAuth2/OIDC, JWT, RBAC, IAM, access control, and secure system design
• Code review, mentoring, requirements analysis, and delivery ownership
Selected results:
• Helped products achieve 100% Google PageSpeed results
• Designed high-availability and zero-downtime deployment approaches
• Built and led engineering teams while remaining hands-on
• Designed resilient multi-data-center systems and real-time synchronization
• Delivered reliable software for regulated operations, banking, analytics, marketplaces, healthcare, and defense IT
I’m comfortable taking ownership from architecture and planning through critical implementation, production launch, and ongoing reliability.
I work best with clients who need an experienced technical partner—not just a ticket executor—and value clear communication, practical decisions, and systems that stay maintainable after delivery.
Steps for completing your project
After purchasing the project, send requirements so Igor can start the project.
Delivery time starts when Igor receives requirements from you.
Igor works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce and isolate the issue
I reproduce the failure, confirm the affected environment, and separate the root cause from secondary symptoms.
Trace the full execution path
I inspect frontend state, rendering, API calls, authentication, logs, build configuration, and deployment where relevant.