# KroxGroup

> Senior engineering. AI-native delivery. A team of specialists who design, build, test and ship complete products: architecture, backend, web, native iOS and Android, cross-platform, design and QA. We use AI at every step of the work, and we build AI products for others.

Website: https://kroxgroup.dev
Contact: hello@kroxgroup.dev
Book an intro call: https://cal.com/kroxgroup/30min

## What we do

- **Architecture & system design**: Event-driven microservices, modular monoliths, multi-tenant platforms. We decide how the system is shaped before the first line is written. Technologies: Microservices, Kafka, Multi-tenant, Event-driven.
- **Backend engineering**: Java and Spring at the core, Node and Python where they fit. APIs, messaging, payments, real-time and batch. Technologies: Java, Spring Boot, Node.js, PostgreSQL, Kafka.
- **Web frontend**: Fast, accessible interfaces in React and Next.js, from marketing sites to complex real-time dashboards. Technologies: React, Next.js, TypeScript, Tailwind.
- **Native iOS & Android**: Swift and SwiftUI, Kotlin and Jetpack Compose. In-app purchases, push, Bluetooth, store publishing. Technologies: Swift, SwiftUI, Kotlin, Compose, StoreKit.
- **Cross-platform mobile**: One codebase where it makes sense: React Native or Capacitor, with native modules where it does not. Technologies: React Native, Capacitor, Expo.
- **Product & UI/UX design**: Design systems, flows and interfaces that engineers can actually build, made alongside the engineering. Technologies: Design systems, Prototyping, Figma.
- **QA & test automation**: Unit, integration, contract and end-to-end suites that run on every commit. Mobile UI flows included. Technologies: Playwright, Maestro, Testcontainers, JUnit.
- **Cloud & DevOps**: AWS, Kubernetes, GitOps and observability. Infrastructure that scales on demand and tells you when something is wrong. Technologies: AWS, Kubernetes, Argo CD, Grafana.

## AI

### AI-native engineering, senior-owned
Every engineer directs AI agents for the parts that are well understood, and spends their own time on the parts that are not: architecture, edge cases, security, review. Senior-quality work in a fraction of the usual timeline.
- Senior review on every line, whether an agent or a person wrote it
- Weeks to a first working version, not months
- Tests, docs and infrastructure generated alongside the code
- Architecture, edge cases and security stay human-owned

### Custom AI products and integrations
Not just development with AI: we ship LLM-powered products, agents and integrations inside your existing systems, with the guardrails production needs.
- LLM applications and assistants: chat, rewriting, extraction, translation
- Agents that act: workflows, tool use, MCP servers
- RAG over your documents and data
- Multi-provider integration: OpenAI, Anthropic, Gemini, open models
- Structured outputs, guardrails, prompt-injection hardening
- Content moderation and classification

## How we work

01. **Discover**: Goals, constraints, users. We ask until the problem is clear.
02. **Architect**: System shape, data, boundaries, risks. Written down before we build.
03. **Build**: Senior engineers directing AI agents. Working software every week.
04. **Verify**: Automated tests on every commit, QA on every release.
05. **Ship**: Production, app stores, monitoring. You see it live.
06. **Evolve**: Measure, iterate, scale. We stay as long as you need us.

## Industries

Fintech, Sports betting, E-commerce, Energy, Geospatial & IoT, Logistics, Ticketing & payments, Marketplaces, Social platforms, Mobile gaming, AI products.

## Ways to work together

- **End-to-end product**: From idea to app stores and production. One team owns architecture, code, design, tests and infrastructure.
- **Dedicated team**: Senior engineers embedded in your process, your tools and your sprints. Scale up or down month to month.
- **Architecture consulting & audit**: A second opinion before a big decision. Reviews, migration plans, performance and cost analysis.

## Principles

- **Server-authoritative by design**: The client is never trusted with money, scores or state.
- **Tests are not optional**: Every feature ships with the suite that proves it works.
- **Senior ownership**: The person who designed it builds it. No hand-offs to juniors.
- **Boring where it should be**: Proven tools for the core, new tools where they pay off.
- **AI with a human in charge**: Agents write; engineers decide, review and sign.
- **Honest estimates**: You hear the real number, and the reasons behind it.

## Facts

- 13+ years · fintech · betting · e-commerce · energy · geospatial · logistics · AI
- Language of work: English. Remote-first, working with clients worldwide.