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You will get Full Stack Development | React Native Development | Web App Audit
Top Rated
Project details
You get a structured report with specific file-level findings, severity ratings, and a fix roadmap - not generic advice, but actionable steps tied to your actual codebase, that will bring your company to the next level.
I run focused technical audits for FinTech companies, scaleups, and enterprise teams built on React, TypeScript, Next.js, and Node.js. The goal isn't a report full of recommendations nobody reads - it's a clear, prioritised action plan your team can execute the next sprint.
The audit covers:
Architecture & code structure - component design, state management, data flow, scalability risks
Performance bottlenecks - render cycles, bundle size, lazy loading, Core Web Vitals
API & backend integration - GraphQL/Apollo, REST API layer, Node.js services, AWS/Azure infrastructure
Dependency & security review - outdated packages, known vulnerabilities, secrets exposure
Technical debt mapping - what's slowing your team down and in what order to fix it
CI/CD & testing gaps - coverage, pipeline health, deployment risks
If your team is shipping slower than it should, or you've inherited a codebase you don't fully trust - let's start with a conversation.
I run focused technical audits for FinTech companies, scaleups, and enterprise teams built on React, TypeScript, Next.js, and Node.js. The goal isn't a report full of recommendations nobody reads - it's a clear, prioritised action plan your team can execute the next sprint.
The audit covers:
Architecture & code structure - component design, state management, data flow, scalability risks
Performance bottlenecks - render cycles, bundle size, lazy loading, Core Web Vitals
API & backend integration - GraphQL/Apollo, REST API layer, Node.js services, AWS/Azure infrastructure
Dependency & security review - outdated packages, known vulnerabilities, secrets exposure
Technical debt mapping - what's slowing your team down and in what order to fix it
CI/CD & testing gaps - coverage, pipeline health, deployment risks
If your team is shipping slower than it should, or you've inherited a codebase you don't fully trust - let's start with a conversation.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,000
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
38 reviews
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DK
Dmytro K.
May 2, 2026
I've only had positive experience of Dmytro's work. He communicated and executed on a record turnaround time. Have guided me through the whole process, set the expectations and delivered above and beyond.
I'm very pleased with the result and I fully recommend working with this true professional.
Thank you!
I'm very pleased with the result and I fully recommend working with this true professional.
Thank you!
ER
Elena R.
May 12, 2026
Next.js + Node.js Developer Needed to Build Trading Activity Dashboard for Our CRM
Dmytro joined mid-sprint and was productive within days. He owned his module, sent short daily updates, and flagged risks early instead of at handover.
Solid FinTech instincts.
We'd hire him again.
Solid FinTech instincts.
We'd hire him again.
DK
Dmytro K.
May 2, 2026
You will get Full Stack Development | React Native Development | Web App Audit
I've only had positive experience of Dmytro's work. He communicated and executed on a record turnaround time. Have guided me through the whole process, set the expectations and delivered above and beyond.
I'm very pleased with the result and I fully recommend working with this true professional.
Thank you!
I'm very pleased with the result and I fully recommend working with this true professional.
Thank you!
SS
Sviataslau S.
Apr 23, 2026
You will get Trading Web App - FinTech solution Full-Stack Application from Scratch
Dmytro audited our codebase and database across a live financial platform. Found issues we didn't know to look for - stale data risks, schema concerns, access patterns that would've caused problems under load. Detailed findings, zero fluff, on time. If your system handles real financial data, he's the right person to review it.
FG
Farrukh G.
Sep 14, 2021
Flash Developer needed
CG
Corina G.
Jan 29, 2015
Edits to Flash movie
Job well done! Dima is always a pleasure to work with.
About Dmytro
Full Stack Developer | Python | React Developer | Next.js | Node.js
100%
Job Success
Krakow, Poland - 4:29 pm local time
SENIOR FULL STACK ENGINEER
When your trading dashboard lags, your legacy codebase blocks every
sprint, or your team ships Excel instead of a real product — that's
exactly the problem I've been solving for 12 years.
My expertise knowledge domains are Fintech, Energy & Retailing.
Transforming complex ideas into seamless, scalable web solutions - powered by React, Next.js, Node.js
I've built and shipped production React/Next.js applications for HSBC, UBS,
McKinsey, Sainsbury's, and Equinor — environments where slow code
costs money and architecture decisions stick for years.
✅ 14+ SPAs and PWA built from scratch in regulated FinTech environments
✅ 5+ legacy migrations delivered (Backbone → React) without stopping
product delivery
✅ Excel → Web App: replaced spreadsheet workflows for biggest UK retail company
(30-person team, 1 year)
✅ Introduced TDD/BDD culture — from 0% to production-grade
test coverage
✅ Real-time trading dashboards for Fixed Income & FX platforms
WHO I WORK WITH
→ FinTech scaleups building trading tools, risk dashboards, or payment
platforms who need a senior engineer — not a ticket executor
→ Enterprise teams with a React codebase that's become painful to ship
→ Companies replacing a critical Excel workflow with a real web product
→ Outsourcing vendors (Softserve, GlobalLogic, Luxoft-type) who need
a battle-tested senior contractor for FinTech client accounts
WHAT I BRING
→ React architecture that's designed to last, not just to demo
→ Full-stack ownership: React + Node.js + GraphQL + PostgreSQL + AWS/Azure
→ CI/CD, Docker, Kubernetes — I don't just hand off code, I ship it
→ Code reviews, mentoring, and engineering standards that stick
→ Small agency squad available: FE + Backend + DevOps for full-product builds
DOMAINS
FinTech · Oil & Energy · Retail · SaaS · Internal Tooling
STACK
React · TypeScript · Next.js · Node.js · GraphQL/Apollo · Redux
PostgreSQL · MongoDB · AWS · Azure · Docker · Jest · Cypress · CI/CD
If your biggest challenge right now is speed, architecture,
or a migration — send a message. I'll tell you in 20 minutes if I can help.
Transforming complex ideas into seamless, scalable web solutions - powered by React, Next.js, Node.js, and a decade of real-world results. Ready to elevate your project to the next level?
No fluff, just smooth project delivery🏆
TECHNICAL SKILLS ✅
Frontend: React, Next.js, GraphQL, Redux, TypeScript, HTML5, CSS3, JSS, LESS/SASS , Wordpress
Backend: Node.js, Python, Express, REST APIs
Databases: PostgreSQL, MongoDB, Redis, SQL
Cloud & DevOps: AWS (Lambda, DynamoDB, S3, API Gateway), Azure, Docker, Kubernetes, Jenkins, GitHub Actions
Testing: Jest, Cypress, Selenium, react-testing-library, TDD, E2E
Tools: Storybook, Lerna, BrowserStack, Vite, Webpack, CI/CD pipelines
Full stack developer, JavaScript expert, Web Developer. (React, TypeScript, Node.js, Next.js)
React, React Native, React.js, Mobile App Development, Crossplatform apps
React Node.js Web Development Software Development
GraphQL Web Application API Integration CSS Progressive Web App HTML Cloud Application API
API Development MySQL PostgreSQL WordPress Artificial Intelligence Mobile App Development
HTML5 Bootstrap
Node.js, Full Stack Development, SaaS Development, API Development, FinTech, Retail-Tech, MVP, Payment Integration, CRM Integration, Software Architecture
Web App Site SaaS Figma Re-Design Mobile Needed Application Expert Product projects Need Wireframe B2B Mockup Prototype Platform Existing Portal Talented Create Dashboard Required Looking New Develop Modern Conversion Build Finance Content Software Screens Graphic Brand interactive Android Help Homepage Marketplace High-Fidelity Frontend Fashion Medical MVP short longer term Work Research Information Architecture U/X Revamp Supplement Start-Up entertainment
Custom Web Platform SaaS Ul Graphics Product Ul Animation Web Application Audit Dashboard Concept Mobile Angular iPad Ul Minimum Viable Product Concept UI/UX UI UX design User Interface Promo Adaptive User Interface platform design Landing Page Responsive Graphics & Ul Website User Experience InVision Axure, REST, REST API, Full-cycle Web, Full stack engineer, REST-API Integration, FinTech, Oil&Energy, Retail, SaaS
Responsive Infographics design UX/UI Desktop Sketch Adobe WordPress Technology & IT Entertainment Business & Sales Marketing Advertising B2B B2C Consultancy Science Sport & Wellness Fashion & Beauty Apparel Nonprofit Startup Transport & Logistic Education Arts & Culture Design & Architecture Hospitality & Leisure Manufacturing Food & Drinks Travel Law SaaS DaaS Home Services Banking & Finance Real Estate Luxury Retail Healthcare & Medicine Professional Services Startup Start-up Small & Midsize SAP CRM ERP, API Integration, React Web App, React SPA, React PWA, Next.JS App, Node.js App, TypeScript Web Development, JavaScript Expert
Steps for completing your project
After purchasing the project, send requirements so Dmytro can start the project.
Delivery time starts when Dmytro receives requirements from you.
Dmytro works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery phase
We need to gather information about things.