Nikita Syreishchikov · Senior Software Engineer
Building Web, Mobile and Backend Products
I build and maintain software across frontend, APIs and mobile applications. My strongest experience is TypeScript, Angular and React, complemented by hands-on Node.js, NestJS and SQL. I work on product features from technical planning and data contracts through delivery.
TypeScript·React & Angular·Node.js & PostgreSQL·Fintech & Web3
What I Do
The types of engineering work I have delivered across products and teams.
Product Engineering
Building features across web clients, APIs and data models, from requirements through integration, testing, releases and maintenance.
Frontend Architecture
Angular and React applications with reusable UI systems, SSR, accessible components and complex state management.
Backend & Integrations
Commercial Node.js/Express features, current NestJS/PostgreSQL development and REST, GraphQL and gRPC integrations.
Web & Mobile
Delivering browser and mobile applications, including Ionic/Cordova wallets, native integrations and app-store releases.
Technical Leadership
Planning, code review, mentoring and practical architecture decisions that support predictable product delivery.
Technical Areas
A practical stack drawn from commercial work and current independent projects.
Frontend
TypeScript
JavaScript
Angular
React
Next.js
RxJS
Signals
MobX
Redux
TanStack Query
SSR
SCSS
Backend & Data
Node.js
Express
NestJS
REST
GraphQL
PostgreSQL
Prisma
MongoDB
PHP / Laravel
MySQL
gRPC
Architecture & Quality
API Contracts
Design Systems
Headless UI
Accessibility
SSR / Hydration
Vitest
Playwright
CI/CD
Code Review
Mobile & Web3
Ionic
Cordova
Capacitor
Web3.js
wagmi
viem
WalletConnect
EVM
TronWeb
Wallet SDKs
NFC
Featured Work
Selected commercial and independent engineering work, including a product still in development.
Independent Fitness Product
Independent · Product engineering · 2026–PresentAn in-development fitness application spanning backend APIs, a web authentication client and an early mobile shell.
Reusable Angular SSR Foundation
Independent · Frontend architecture · 2025–PresentA reusable Angular 21 foundation with headless UI, data-heavy admin blocks and an optional Web3 transaction layer.
Corporate KYB / KYC Onboarding
Unlimit · Banking & compliance · 2023–2025Angular onboarding flows for corporate verification, stakeholder roles, document submission and asynchronous compliance checks.
Banking Operations Backoffice
Unlimit · Internal banking tools · 2024–2025Internal account and permission management with data tables, filtering, pagination and an Angular 19/Signals rebuild.
Technical Demos
Working examples of reusable Angular UI, complex application state and blockchain integrations.
Angular SSR & UI Foundation
Angular 21 reusable UI system with admin dashboards and optional wallet/transaction modules.
Wallet & Staking Tools
Interactive Angular/Web3 examples for staking, auctions, marketplace and transaction states.
Get In Touch
Open to remote Senior Software Engineer, Senior Frontend Engineer and Frontend Lead roles, including B2B contracts.
Direct contact
For software engineering opportunities, email is the most direct way to reach me. The form is also available.