G'day, mate!
I'm Maxim Spiridonov

Mobile & Web Engineer — React Native, iOS (Swift), React/Next.js.

I build production apps end-to-end: React Native or fully native iOS, plus complex web with React/Next.js and Node.js. Recently: a cross-platform trading app with Solana wallet/transaction flows, a Telegram Web App migrated into a full mobile app, launching AI tools and agents. I move fast, keep code clean, and deliver stable releases.

What I do

I’m a mobile & web engineer who ships products end-to-end — React Native or fully native iOS (Swift) on mobile, and React/Next.js + Node.js on the web.

I’ve led builds from 0→1 to scale: a cross-platform trading app with Solana wallet/transaction flows, NFT tooling that moved real business metrics, analytics & data-viz platforms, and high-polish consumer features (video, AR, deep links, push).

I work fast, keep code clean, and own outcomes — from architecture and CI/CD to hands-on delivery. I regularly tear down products ethically (reverse-engineering, perf audits, DX reviews) to understand how they work inside and make ours better.

I’ve collaborated with rock-star engineers in high-pressure environments and learned to adapt process and architecture through pivots. I started back when table-based layouts were still a thing and Objective-C ruled iOS — that depth helps me solve hard problems quickly and leave codebases better than I found them.

React Native

  • iOS & Android from a single codebase (Expo/CLI)
  • Store-ready UX, performance & stability
  • Secure auth, push, deep links, in-app updates
  • Architecture & system design for scalable mobile apps

Native iOS (Swift)

  • Swift/SwiftUI/UIKit
  • Deep links, push, payments, caching & performance
  • CI/CD & release pipelines (Fastlane, GitHub Actions, TestFlight)
  • Architecture & system design (modularization, SwiftUI/UIKit patterns)

Web Platforms

  • React/Vue/Next.js, TypeScript, Node.js,SSR, performance, CI/CD
  • From 0→1 MVP to scalable production
  • AI tools & agents (LLM): automation, prompts, evals, guardrails
  • Architecture & system design (monorepos, service boundaries, scalability)
Solana wallets & transactions
Privy auth & embedded wallets
Stripe payments & subscriptions
API design & integrations
Polished UI & smooth interactions
Application design & system architecture — modularization, service boundaries, scalability

Additional skills

Languages
SwiftTypeScript
Frontend
ReactNext.jsReduxVue 3PiniaViteComposition APIFCD
Mobile
IOSSwiftReact Native
Backend
Node.jstRPC/RESTPostgreSQL/Prisma
Cloud & DevOps
VercelGitHub ActionsFastlaneFirebaseExpo/EASAWS AmplifyCI/CDSentryMixpanel
Web3
BlockchainSolanaNFTsPrivy

My Work Experiences

Senior Software Engineer at Cypher Capital | Vibes

Full-time | Jan 2025 — Sep 2025 · 9 mos
  • Focused on React Native (Expo) — cross-platform trading app with native-like UX (iOS & Android).

  • Implemented Solana transaction flows and wallet integrations for seamless trading.

  • Built a React + Next.js web trading platform, migrating from a Telegram bot (vibes.meme).

  • Designed and integrated an achievements & rewards system; acted as a full-stack engineer.

  • Prepared the marketing analytics stack: event taxonomy & tracking plan, AppsFlyer attribution, Mixpanel product analytics (funnels/cohorts), deep-link & campaign tagging.

Stack
React NativeIOSAndroidExpoTypeScriptPrivyBlockchain

Recommendations

  • Sumeet Surana avatar
    Web 3.0 VC | INSEAD MBA Alum | IIT KharagpurCypher Capital | Vibes

    I had the pleasure of hiring and working with Maxim to build our app - Vibes. He came in at the best time possible when we were going to transition from a telegram mini app to a mobile app. His speed and ownership ethos impressed me and within a month we had an app ready to go live on global app stores. Beyond his technical work, what impressed me was his dedication and passion towards building a superior product for…

  • Ivan Kumets avatar
    Lead UX EngineerCypher Capital | Vibes

    Max is an exceptional engineer who quickly masters any new technology he works with. He played a key role in integrating crucial features that ensured the sustainability of our product and also built a robust, developer-friendly infrastructure. His work is always well-structured, thoughtful, and effective. One of Max’s greatest strengths is his willingness to improve under-optimized parts of the product. He dives de…

  • Mikalai Rysnik avatar
    Senior Software / Infrastructure Engineer; Ex Co-founder & CTO at MVLABOPTIC

    Maxim has proven himself at Optic as a strong Senior Software Engineer with a focus on web development. He has deep knowledge of architecture and modern web technologies, is able to quickly find effective solutions, and maintain a high level of code quality. He is a responsible and proactive specialist who makes a significant contribution to the development of the team and projects. I recommend him as a professional…

  • Ivan Izmailov avatar
    Senior Backend & ML/LLM Infra Engineer @ Optic • Similarity Search at Billions-scale • High-scale async Python/C++ • AWS & GCPOPTIC

    Max was the Frontend Lead on our team. He is very fast and hardworking—he delivered even UX-heavy MVPs in just a few days. Max is comfortable with Swagger docs and can plan and test API requests by himself. Together we shipped full frontend-backend communication using WebSockets, Server-Sent Events, GraphQL, and plain REST. The integrations were smooth and reliable. Max is a strong engineer and a good teammate. I hap…

  • Valery Cheremisin avatar
    iOS DeveloperGazprom-Media | Yappy

    Maxim is an excellent specialist! Being in my team, we worked together to finalize the video editor. Not initially knowing the nuances of working with a video editor, Maxim quickly figured it out. He also gave recommendations on working with di.

  • Alexander Imashev avatar
    Senior Software EngineerARQ

    At ARQ, Max led the frontend and owned the web side of our AR platform built on WebGL (A-Frame). He designed the client architecture, implemented key modules, and integrated them cleanly with our .NET backend (REST/WebSockets). He put strong emphasis on performance—optimizing scenes and assets, reducing bundle size, and achieving stable FPS on mobile devices. In parallel, he led the iOS track in Swift: planned releas…

FAQ — How I can help

What problems do I solve?
  • Ship mobile apps end-to-end: React Native or fully native iOS (Swift).

  • Build and scale web platforms with React/Next.js + Node.js.

  • 0→1 MVPs, legacy rescue, performance and DX audits.

  • Crypto/Web3: Solana wallet & transaction flows, Privy auth / embedded wallets.

  • Payments & monetization: Stripe, subscriptions, in-app purchases.

  • Analytics: event taxonomy & tracking plan, AppsFlyer attribution, Mixpanel funnels / cohorts, deep-link & campaign tagging.

  • AI tools & agents (LLMs): automation, prompts, evals, guardrails.

Why hire me?
  • Ownership from architecture & CI/CD to hands-on delivery.

  • Fast iterations without sacrificing stability and code quality.

  • Experience in high-pressure launches with rock-star teams.

  • Product mindset: I ship measurable outcomes, not just features.

How we can work together?
  • Project-based delivery (fixed scope / milestones).

  • Part-time or full-time engagement for a period.

  • Tech advisory / audits / rescue missions.

  • Long-term retainer for roadmap & maintenance.

Typical timelines
  • Mobile MVP (React Native or Swift) to TestFlight / Internal: ~2–4 weeks for a focused scope.

  • Web MVP (Next.js): ~1–3 weeks to production with CI/CD.

  • Weekly increments, demoable builds — no “big-bang” releases.

Codebase & architecture audit (popular request)
  • Health-check: architecture, state management, networking, build setup, CI/CD.

  • Perf & UX: startup time, bundle size, jank, navigation, accessibility.

  • Security & compliance: secrets, permissions, deep-links, payments, data retention.

  • Analytics sanity: event taxonomy, tracking plan, attribution, funnels.

  • Deliverables: written report with prioritized fixes + quick wins, roadmap, and a live review session with your team.

Mentorship & team enablement
  • 1:1 mentorship for RN / iOS / React engineers.

  • Pair-programming & code reviews, architecture sessions.

  • Hiring support: screening tasks, tech interviews, onboarding plans.

  • Internal workshops: CI/CD, analytics, performance, Web3, AI agents.

Security, ownership & handoff
  • NDA-friendly. Least-privilege access; secrets via envs / vaults.

  • You own code, infra and accounts from day one.

  • CI/CD, docs, runbooks and clean handoff guaranteed.

What do you need from me to start?
Problem statement + success criteria, access to repos/designs/analytics (if any), one decision-maker for fast feedback, and a realistic first milestone. I’ll propose scope, plan, and risks, then we start shipping.