React
Production SPAs and component libraries — design-system-first, type-safe, with deliberate state management (Redux, Zustand, TanStack Query).
Explore React →Technologies we use
24 production-grade stacks for ambitious teams
From React and Next.js on the frontend to Kubernetes and Kafka in the back, Swift and Kotlin on mobile, and OpenAI plus LangChain for AI — we ship on the tools your product actually needs. Senior engineers across every stack, US & EU governance built in.
- 24core technologies
- 120+projects delivered
- 9+years
- NPS 71client satisfaction
Frontend & web UI
Production web frontends that load fast, render correctly on every device, and stay maintainable as teams and features grow.
Next.js
Full-stack React with App Router, server components, ISR/SSR, edge runtimes — SEO-grade marketing sites and SaaS dashboards.
Explore Next.js →
TypeScript
Strict-mode TS across frontend and backend — shared types end-to-end, generated API clients, refactor-safe codebases.
Explore TypeScript →
Tailwind CSS
Utility-first styling with design tokens, dark-mode parity, accessibility-aware components — ships fast without runtime CSS-in-JS overhead.
Explore Tailwind CSS →Backend & APIs
From REST and GraphQL to event-driven and CQRS — production backends with proper observability, auth, and deployment hygiene.
Node.js
JavaScript on the server — Express, Fastify, Koa; high-throughput I/O for SaaS APIs, real-time gateways, BFFs.
Explore Node.js →
NestJS
Opinionated TypeScript framework for enterprise-shaped Node backends — DI, modules, microservices, gRPC and event transports.
Explore NestJS →
Python
Django and FastAPI for SaaS and APIs, plus Python-first data and ML pipelines — the same language across product, data, and AI.
Explore Python →
.NET
.NET 8 and ASP.NET Core for enterprise systems — Azure-native, EF Core, strong typing, performant runtime, mature tooling.
Explore .NET →
Laravel
Modern PHP for marketplaces, CMS-heavy products, admin panels — Eloquent ORM, queues, broadcasting, Filament dashboards.
Explore Laravel →
Symfony
Component-based PHP for long-lived enterprise systems — Doctrine ORM, API Platform, hexagonal architectures, multi-tenant SaaS.
Explore Symfony →
Go
Concurrent, low-latency microservices — API gateways, ingestion pipelines, sidecars; small binaries, fast cold starts.
Explore Go →Mobile
Native iOS and Android plus cross-platform Flutter and React Native — from MVPs to consumer apps with millions of installs.
Swift
Native iOS with SwiftUI and UIKit — Combine, async/await, App Store-ready architecture, accessibility-first.
Explore Swift →
Kotlin
Native Android with Jetpack Compose, Coroutines, Hilt — modern, type-safe, Play Store-ready code.
Explore Kotlin →
Flutter
Single Dart codebase for iOS, Android, web and desktop — pixel-perfect UI, 60 fps, when shipping speed and visual consistency matter.
Explore Flutter →
React Native
Shared React skillset across mobile and web — Expo for fast iteration, native modules when performance demands it.
Explore React Native →Data & storage
Relational, in-memory, search and streaming — the four pillars of a production data layer that does not corrupt itself under load.
PostgreSQL
Our default RDBMS — JSONB, partitioning, logical replication, pgvector for embeddings; battle-tested at multi-TB scale.
Explore PostgreSQL →
Redis
In-memory data structures for caches, queues, rate-limiters, leaderboards — with Streams and pub/sub for real-time fan-out.
Explore Redis →
Elasticsearch
Full-text search, log analytics, autocomplete, faceted product search — with sane index design and shard sizing.
Explore Elasticsearch →
Kafka
Event streaming backbone — CDC pipelines, async integrations, audit-grade event logs; exactly-once where it matters.
Explore Kafka →Cloud & DevOps
Cloud-native infrastructure with reproducible deploys, observability built in, and budgets you can actually defend to finance.
AWS
EC2, ECS/EKS, Lambda, RDS, S3, CloudFront, Route53 — Well-Architected reviews, cost guards, multi-account landing zones.
Explore AWS →
Kubernetes
EKS, AKS, GKE plus self-managed — Helm, ArgoCD, HPA/VPA, service meshes, secret management; not just «containers in prod».
Explore Kubernetes →
Terraform
Infrastructure as code with module-first design, remote state, drift detection — multi-env, multi-cloud, audit-trail ready.
Explore Terraform →AI & LLM tooling
Real productionized AI — RAG, agents, evals, observability and cost controls. Not demos.
OpenAI
GPT-4o, GPT-4.1 and o-series in production — structured outputs, function calling, batch API, fine-tuning, with evals and budget guards.
Explore OpenAI →
LangChain
RAG pipelines, agent frameworks, tool calling, eval harnesses — LangChain and LlamaIndex orchestration over multi-model setups.
Explore LangChain →Services that pair with these stacks
Whichever combination you pick, the same delivery toolkit applies — senior teams, modern engineering practices, dual US & EU governance.
Custom Software Development
Bespoke platforms for mid-market and enterprise teams — internal tools, vertical SaaS, mission-critical backends.
Learn more →
Web Application Development
Production web apps on React, Next.js, Vue and Node — SaaS dashboards, B2B portals, marketing-conversion stacks.
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Mobile App Development
Native iOS & Android plus cross-platform Flutter and React Native — from MVPs to apps with millions of installs.
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Cloud & DevOps
AWS, Azure and GCP architecture, Kubernetes, Terraform/Pulumi, CI/CD and observability — SRE-grade operations.
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AI/ML & Data Engineering
Productionizing AI — data pipelines, model training, MLOps, evals, and LLM-powered copilots embedded into existing products.
Learn more →
Dedicated Development Teams
Managed pods of 4–12 engineers with a delivery lead and roadmap ownership — billed monthly.
Learn more →Frequently asked questions
How does YuSMP Group choose a technology stack for a new project?
We start from product constraints — load profile, team familiarity, compliance scope, total cost of ownership over 3–5 years — and only then pick the stack. The 24 technologies on this page are our default toolbox; we recommend whichever combination fits your case. We are not religious about any single framework; we have shipped FinTech on .NET and HealthTech on Node, GovTech on Django and EdTech on Next.js.
Which languages and frameworks are your strongest?
Our highest concentration of senior engineers is on TypeScript (React, Next.js, Node.js, NestJS), Python (Django, FastAPI, data & ML), Swift, Kotlin and Flutter for mobile, and AWS + Kubernetes for cloud. We have strong .NET and Java benches for enterprise integrations and offer Go for performance-critical microservices.
Can you join an existing codebase or do you only build from scratch?
Both. About 40% of our engagements are joining an existing codebase — handover, refactoring, modernization or new-feature delivery. We do a 1–2 week discovery before commitment to map architecture, dependencies, test coverage and tech-debt hotspots.
Do you support legacy stacks like PHP 7, AngularJS or older .NET Framework?
Which AI and LLM stacks do you work with?
OpenAI (GPT-4o, GPT-4.1, o-series), Anthropic Claude, Google Gemini, plus open-weight Llama, Mistral and Qwen for on-prem or air-gapped deployments. Orchestration on LangChain, LlamaIndex or custom code; vector stores on pgvector, Pinecone, Weaviate or Qdrant. We deliver RAG pipelines, agents, fine-tuning and evals.
Can you commit to a stack we have already chosen?
Yes — if it is a reasonable production stack and we have engineers with that experience. We will not switch to a stack we do not have senior engineers in; in that case we will refer you honestly to a partner.