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You will get Code and Architecture review of your Node.js application
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Project details
๐ข๐๐ฟ ๐ฆ๐ฒ๐ฟ๐๐ถ๐ฐ๐ฒ๐
โ In-Depth Code Analysis
โ Focus on Maintainability and Readability
โ Best Practices and Security
โActionable Recommendations
๐ช๐ต๐ฎ๐ ๐ช๐ฒ ๐ก๐ฒ๐ฒ๐ฑ ๐๐ฟ๐ผ๐บ ๐ฌ๐ผ๐
โ Project Code
โ Project Context
โ Coding Standards (Optional)
๐๐ฏ๐ผ๐๐ ๐จ๐
Our Node.js team is a group of highly skilled and experienced developers who specialize in building high-performance, scalable applications using Node.js. We use the latest tools and technologies to create cutting-edge web and mobile applications, and our team is dedicated to delivering the highest quality work on time and within budget. Whether you need a simple web app or a complex enterprise-level solution, our Node.js team has the expertise to get the job done.
Building Better Together: 10 Years of the Node.js Community!
โ In-Depth Code Analysis
โ Focus on Maintainability and Readability
โ Best Practices and Security
โActionable Recommendations
๐ช๐ต๐ฎ๐ ๐ช๐ฒ ๐ก๐ฒ๐ฒ๐ฑ ๐๐ฟ๐ผ๐บ ๐ฌ๐ผ๐
โ Project Code
โ Project Context
โ Coding Standards (Optional)
๐๐ฏ๐ผ๐๐ ๐จ๐
Our Node.js team is a group of highly skilled and experienced developers who specialize in building high-performance, scalable applications using Node.js. We use the latest tools and technologies to create cutting-edge web and mobile applications, and our team is dedicated to delivering the highest quality work on time and within budget. Whether you need a simple web app or a complex enterprise-level solution, our Node.js team has the expertise to get the job done.
Building Better Together: 10 Years of the Node.js Community!
Programming Languages
JavaScript, TypeScriptWhat's included $199
These options are included with the project scope.
$199
- Delivery Time 2 days
- Number of Revisions 1
Optional add-ons
You can add these on the next page.
Additional Revision
+$150
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MM
Matthew M.
Jan 15, 2026
HubSpot Development Team Partner
Fantastic experience. They quickly understood a complex domain, communicated clearly throughout, and delivered well-structured technical insights that will help shape our next development steps. Would gladly work with them again and highly recommend them for any fintech work.
DS
Daria S.
Nov 12, 2025
Customer Data Platform for Skincare company
Working with this freelancer has been an exceptional experience. They demonstrated deep technical expertise, strong communication, and an ability to translate complex product requirements into elegant, scalable solutions. Their work on our headless Shopify integration exceeded expectations โ reliable, well-architected, and thoughtfully delivered. They approach every challenge with precision and ownership, making them one of the best collaborators Iโve worked with.
DS
Daria S.
Aug 12, 2025
Senior Node.js Developer for beauty industry marketplace
Working with Valery to build our beauty marketplace from scratch using Strapi was fantastic. They really know their stuff when it comes to Node.js and delivered exactly what we needed.
The marketplace turned out great - everything works smoothly from user accounts to payments to vendor management. They built a solid, scalable solution that's been running perfectly since launch.
What I loved most was how well they fit in with our team. Great communication, always responsive, and just genuinely nice to work with. Made the whole project feel easy and collaborative.
If you need a senior Node.js dev who can handle complex projects and is awesome to work with, definitely hire them. Would work with them again in a heartbeat!
The marketplace turned out great - everything works smoothly from user accounts to payments to vendor management. They built a solid, scalable solution that's been running perfectly since launch.
What I loved most was how well they fit in with our team. Great communication, always responsive, and just genuinely nice to work with. Made the whole project feel easy and collaborative.
If you need a senior Node.js dev who can handle complex projects and is awesome to work with, definitely hire them. Would work with them again in a heartbeat!
DS
Daria S.
Apr 11, 2025
Backend Developer (Telehealth Platform)
As always, working with Valerii and the Onix Team was amazing. We are considering them as development partners: their knowledge, experience, advice, and velocity are fascinating! They know how to ship well-developed products of any complexity.
DS
Daria S.
Feb 14, 2025
Beauty industry marketplace and backend
A very skillful team. We were blessed to build a beauty marketplace with the strap backend fast and efficientlyโgreat experience with backend and forntend. The team advises on proper improvementsโfantastic work ethic, always available and responsive. Highly recommend.
About Valerii
AI Automation Developer | HIPAA | EHR/EMR | HL7 Healthcare Software
100%
Job Success
Kropyvnytskyy, Ukraineย - 12:35 am local time
๐ฅ **HIPAA compliance** โ built in from day one. My coffee machine is less secure than our architecture.
โฐ **Deadlines** โ usually on time. Sleep schedule... still under investigation.
๐ฅ Healthcare SaaS โข FHIR โข HL7 โข EHR/EMR โข Epic โข Athenahealth โข HIPAA โข Healthcare AI Automation
โก 10+ Years of Professional Software Engineering
โก Healthcare Platforms, Telehealth, EHR/EMR Integrations, Clinical Workflow Automation & AI Agents
โก 30โ40% Faster Delivery Through AI-Assisted Engineering
Welcome! ๐
I'm a full-stack engineer specializing in healthcare software โ helping healthcare startups, digital health companies, clinics, insurers, and enterprise providers build scalable systems that automate clinical/administrative workflows, integrate EHR/EMR platforms, and connect fragmented healthcare data into one reliable system.
For over 10 years, I've architected, built, and scaled software for startups, healthcare providers, insurance companies, and enterprise organizations โ from patient-facing apps to complex healthcare integration layers. I focus on secure, HIPAA-first, interoperable systems that reduce manual work and hold up in production, not just in a demo.
๐ฅ WHAT YOU GET
โ End-to-end product delivery โ Discovery โ UX/UI โ Development โ QA โ DevOps โ Compliance โ Long-term support
โ Healthcare-first architecture built for interoperability, scalability, and automation
โ AI-assisted engineering that speeds up delivery by 30โ40% without cutting corners on quality
โ Direct, hands-on ownership of your project โ not a hand-off to a black-box team
๐ฅ HEALTHCARE DOMAIN EXPERTISE
โ Healthcare SaaS Platforms, Telehealth Products, Patient & Provider Portals
โ EHR/EMR Systems and Clinical Scheduling
โ Healthcare CRM & Insurance Platforms
โ Patient Intake, Onboarding & Workflow Automation
โ HIPAA-first architecture โ RBAC, audit logging, encryption, PHI protection, BAA-ready
๐ HEALTHCARE INTEGRATIONS
โ EHR/EMR integrations: Epic, Athenahealth, Cerner, Healthie, DrChrono, Elation, eClinicalWorks
โ FHIR / FHIR R4, HL7 interfaces, SMART on FHIR, healthcare middleware and interoperability layers
โ REST/GraphQL Healthcare APIs, Webhooks, OAuth2, event-driven architectures for real-time data sync
โ Lab, e-prescribing, and diagnostics integrations: LabCorp, Quest Diagnostics, DoseSpot, Surescripts
โ Workflow automation cutting manual admin work by 40โ70%
๐ค AI & AUTOMATION
โ AI Agents & intelligent clinical/business workflows
โ OpenAI, Claude, LangChain, RAG systems, Voice AI
โ AI-powered patient intake, scheduling, follow-ups, and care coordination
โ Document processing, OCR, medical data extraction, clinical summarization
โ n8n, Make, Keragon, Zapier โ automation platforms for both healthcare and general business workflows
๐ป TECHNOLOGY STACK
Full-Stack: React โข Next.js โข Node.js โข NestJS โข TypeScript โข Python โข FastAPI โข Java
Mobile: React Native โข Flutter
Cloud: AWS โข Azure โข Google Cloud โข Docker โข Kubernetes โข CI/CD
Databases: PostgreSQL โข MySQL โข MongoDB โข Redis
AI: OpenAI โข Claude โข Gemini โข LangChain โข RAG โข AI Agents โข MCP
Healthcare: FHIR โข FHIR R4 โข HL7 โข Epic โข Athenahealth โข Healthie โข Cerner โข SMART on FHIR โข HIPAA โข PHI
๐ RESULTS & IMPACT
โ Delivered Healthcare SaaS platforms, Telehealth products, Healthcare CRMs, and AI-powered healthcare applications from MVP to production
โ Automated complex clinical and administrative workflows, cutting manual work and reducing errors
โ Built HIPAA-compliant, scalable architectures supporting real patient and provider volumes
โ Delivered software up to 40% faster using AI-assisted engineering, without sacrificing code quality or long-term maintainability
Whether you're building a Healthcare SaaS Platform, EHR/EMR or FHIR/HL7 Integration, AI-powered Clinical Automation Tool, Telehealth Solution, or general Full-Stack Web Application โ I'd be glad to discuss your project and help turn it into a production-ready solution.
Steps for completing your project
After purchasing the project, send requirements so Valerii can start the project.
Delivery time starts when Valerii receives requirements from you.
Valerii works on your project following the steps below.
Revisions may occur after the delivery date.
Project Kick-off & Information Gathering
The specific code you want reviewed. The purpose of the review (bug fix, new feature, refactoring). Any areas of particular concern. Coding standards or guidelines to follow. Your desired outcomes for the review.
Code Retrieval & Familiarization
Once I have access to the code, I'll download and set up a local development environment (if needed). I'll then take time to thoroughly review the codebase, including relevant documentation and any provided test materials.