Software development services
Six capabilities, each with its own page covering how we build it, what it costs, how long it takes, and when it is the wrong choice.
What services does Techroniqs offer?
Techroniqs provides six engineering services: full-stack web development, mobile app development, AI and LLM integration, cloud architecture and DevOps, SaaS and custom software, and e-commerce and marketplace development. All six are delivered by senior engineers for clients in the United States and United Kingdom, across 16 production projects including platforms for Volta Charging (a Shell Petroleum brand), Cresta.ai, and Adaptive Insurance.
The six capabilities
Web Development
We build web applications end to end — interface, API, database, and the pipeline that ships them — and stay on to run them in production.
- React
- Next.js
- TypeScript
- Redux Toolkit
Mobile App Development
We build cross-platform mobile applications in Flutter — one codebase for iOS and Android — with particular depth in apps that have to keep working without a network.
- Flutter
- Dart
AI & LLM Integration
We wire language models into products that already have users, budgets, and uptime expectations — retrieval over your own data, conversational interfaces, and voice.
- OpenAI
- Claude
- Mistral
Cloud & DevOps
We set up and run the infrastructure underneath the applications we build — and, often, underneath applications somebody else built.
- AWS
- Vercel
- Cloudflare
SaaS & Custom Software
We build subscription products and internal systems — the multi-tenancy, the billing, the permissions, and the admin tooling that customer-facing screens depend on.
- Next.js
- React
- NestJS
- Node.js
E-Commerce & Marketplaces
We build platforms where two sides transact — buyers and sellers, customers and contractors, travellers and venues — including the payments, discovery, and trust mechanics in between.
- Ruby on Rails
- Next.js
- React
- Redux Toolkit
Technologies we have shipped on
Every technology below appears in at least one of our 16 delivered projects. We do not list tools we have only read about.
Frontend
- React
- Next.js
- TypeScript
- Redux Toolkit
- RTK Query
- MobX
- Tailwind CSS
- Styled Components
Backend
- Node.js
- NestJS
- Ruby on Rails
- Python
- Flask
- FastAPI
- tRPC
Mobile
- Flutter
- Riverpod
- AutoRoute
- Isar DB
AI & Voice
- OpenAI
- Claude
- Mistral
- Speechmatics
Data
- PostgreSQL
- Redis
- Supabase
- Sequelize ORM
Cloud & Platform
- AWS
- Vercel
- Cloudflare
Payments & Auth
- Stripe
- Clerk
- OAuth
Geospatial
- Google Maps
- Mapbox
Frequently asked questions
Which service do we need?
Most engagements combine two or three. A typical SaaS build is custom software plus web development plus cloud and DevOps. Rather than picking a category up front, describe the outcome you need on a discovery call and we will tell you what it actually involves — including when it is less than you expected.
Do you work on existing products or only new builds?
Both, and the majority of our work is existing products. GreenPal was already serving more than 500,000 homeowners when we joined, Cresta.ai was an established enterprise platform, and CropGuard began as founding frontend engineering alongside the client team.
Can you provide a full team, or only individual engineers?
Either. Fixed-price and time-and-material engagements are delivered by us end to end. A dedicated team engagement embeds full-time or part-time engineers, designers, or QA into your own process and board.
What technologies do you specialise in?
React, Next.js and TypeScript on the front; Node.js, NestJS, Ruby on Rails, Flask and FastAPI on the back; PostgreSQL and Redis for data; Flutter for mobile; OpenAI, Claude and Mistral for AI; AWS and Vercel for infrastructure. Every technology listed on this site appears in at least one delivered project.
What do you not do?
We do not build games or 3D engines, we do not staff native Swift or Kotlin teams, we do not run large Azure or Google Cloud migrations, we do not train foundation models, and we do not offer a 24/7 on-call rota. Each service page states its own limits in more detail.
Related
Not sure which of these you need?
Describe the outcome rather than the technology. A 30-minute call with an engineer will establish what the work actually involves — including when it is less than you expected.