Fintech & Banking
Customer dashboards, Angular→React migrations, KYC integrations, anti-fraud. 3 projects · 2024–2026.
Software development partner for custom web & mobile solutions
Weiss Solutions is an international web and mobile app development studio delivering full-cycle software development services.
We help clients bring their boldest product ideas to life through custom software solutions.
Industries we work in
Every industry has its own rules. We turn them into custom software that fits real workflows, goals and users.
DTC & E-commerce
Storefronts, ERP, warehouses, checkouts, Bitrix migrations. 12+ stores since 2019.
Media & Editorial
Custom CMSes for longreads, editorial workflows, media libraries.
SaaS & B2B Tools
Logistics & Delivery
Real Estate & PropTech
HealthTech & Wellness
LegalTech & HRTech
EdTech & Learning
Services · what we build
9 directions · full cycle
01 / Sites
Custom websites
Landing pages, corporate sites, online stores, longreads, business cards. Next.js or Astro, clean semantics, responsive, SEO from the first commit.
More ↗ 02 / WebWeb apps
SPAs, CRMs, dashboards, customer portals, SaaS products.
More ↗ 03 / MobileMobile apps
iOS and Android. React Native or native (Swift / Kotlin).
More ↗ 04 / MVPMVP for startups
3–6 weeks from formulation to production. We help close seed rounds.
More ↗ 05 / SEOSEO & performance
Core Web Vitals, on-page, Schema.org, fixes after previous contractors.
More ↗ 06 / BotsTelegram & MAX
Bots, Mini Apps, WebApp integrations, payments.
More ↗ 07 / RefactorLegacy refactoring
Migrations, stack updates, untangling legacy code.
More ↗ 08 / LLMLLM integrations
Claude, GPT, YandexGPT, GigaChat, RAG, agents, Tool Use.
More ↗ 09 / DevOpsDevOps
VPS, Docker, CI/CD, monitoring, backups, zero-downtime deploys.
More ↗Selected works · 2023 — 2026
most under NDAFintech · 2026001
Fintech platform
B2C, ~200K MAU. Account redesign and Angular-to-React migration. 6 weeks.
TypeScript · React 19 · Node · Postgres · Temporal
Media · 2025002
Independent media
Custom CMS for longreads and a 14-editor workflow. 5 weeks.
Svelte · Node · Postgres · ImageMagick · S3
DTC · 2025003
DTC apparel brand
Storefront and internal ERP: warehouse, manufacturing, shipping. Replaced three SaaS subscriptions. 6 weeks.
Next.js · Go · Postgres · Redis · Docker
SaaS · 2024004
B2B SaaS startup
MVP from Figma to production. Helped close seed round. 4 weeks.
React · tRPC · Postgres · Stripe · Vercel
E-commerce · 2024005
Online store
SEO + speed: LCP 4.2 → 0.9s, conversion +22%, top-10 in Yandex for 40 keywords. 2 weeks.
Next.js · Redis · Lighthouse CI · Search Console
Logistics · 2023006
Delivery service
Telegram bot and Mini App for orders and tracking. 20K+ users in the first month. 3 weeks.
Node · grammY · Telegram WebApp · Postgres
Technologies we use
Tools and frameworks we use to build and ship products across every layer of the stack.
Frontend
Frameworks and libraries we use to build performant, responsive interfaces.
TypeScript
React
Next.js
Tailwind
Astro
Svelte
Vite
Sass
FigmaBackend
Services and tools that power our APIs and integrations.
Node.js
Go
Python
Nest.jsDatabase
Storage technologies we trust to manage client data at any scale.
Postgres
Redis
MongoDB
ClickHouseInfra & AI
CI/CD, deployments, monitoring — and LLM agents we ship into your product.
Docker
Vercel
Cloudflare
GH Actions
ClaudeOpenAI
Sentry
Grafana
TemporalProcess · how we work
one contact · one invoice · transparentBrief
20-minute call, no commitment. We understand the task, constraints, budget, timeline. NDA if needed.
Plan
A technical plan within 1–3 days: screen map, stack, week-by-week estimate, fixed price or hourly.
Build
1–2 week sprints with demos. One channel, one invoice. No PM relay. Stop after any sprint.
Ship
Deploy to your server or our VPS. Hand-off of access, docs, source. Support on request.
Voices · what clients say
We were nervous about going with a small studio. It turned out to be the upside — the person we briefed was the same person who wrote the code. On bigger teams that handoff used to cost us weeks.
They did a redesign of our customer portal. Hit the deadline, shipped on a Saturday evening — no support tickets on Monday. I'd genuinely braced for worse.
Our store used to load in four seconds. Two weeks later it opened almost instantly and orders went up noticeably. They explained the changes in plain language, not jargon.
Numbers · since 2019
120+
Projects
since 2019
since 2019
7 years
Practice
uninterrupted
uninterrupted
1—6
Weeks
typical cycle
typical cycle
NDA?
on request
open or closed
open or closed
Blog · latest articles
All articles ↗
2026 · pricing
How much does a website cost
A breakdown by site type, pricing factors, and what's usually hidden in the estimate.
2026 · productMVP in 4–6 weeks
What's required, what to cut, and how not to ship half a product.
2026 · LLMLLM for business
When LLM actually pays off, and when ordinary automation is better.
FAQ · the questions we hear most
What clients ask before we start
Short answers about timelines, pricing, how we work and the stack we use. If something's missing, drop us a line — we reply within a day.
How much does a website or app cost?
It depends on product type and scope. Landing page — from $500, corporate site — from $1,500, web app or SPA — from $3,000, startup MVP — from $4,500, mobile app — from $6,500.
After a 20-minute brief we send a tech plan and a fixed quote within 1–3 days.
How long does a project take?
Landing — 1–2 weeks. Corporate site — 3–4 weeks. MVP — 4–6 weeks. Web app — 6–12 weeks. Mobile app — 8–14 weeks.
We work in 1–2 week sprints with a demo at the end of each. You can pause or stop after any sprint.
What stack do you use?
Frontend: TypeScript, React 19, Next.js, Astro, Svelte, Tailwind, Vite. Backend: Node.js, Go, Python, NestJS. Databases: Postgres, Redis, MongoDB, ClickHouse. Mobile: React Native, Swift, Kotlin, Expo. AI: Claude, GPT, RAG, agents.
Who do we talk to during the project?
One contact, one invoice. The same person who writes the code talks to you — no PM hand-offs. Brief (20-min call) → tech plan (1–3 days) → sprints with demos → release and source handover.
Channel of your choice: Telegram, email, Slack, Notion. One short status update per week.
How do you handle contracts, invoicing and NDA?
The brief call and tech plan are free, no commitment. After that — contract and invoice. We usually split payment by sprint. We work with individuals and companies in Russia and abroad. NDA on request.
What if we already have code, a developer or design?
Fine — we audit, refactor, migrate stacks and add features. We can plug into your team as the front / back / mobile link. If you have a Figma, we ship pixel-perfect; if not, we design it.
What happens after launch?
You get the source, access, docs and deploy guide. Optional ongoing support: SLA, monitoring, fixes, new features. Minimum 8 hours / month. We can also set up CI/CD, monitoring (Sentry, Grafana), backups and alerts.
Where are you and how do you work?
Studio is in Moscow. We work remotely across Russia, CIS and internationally in EN/DE. Since 2019 — 120+ projects with the same core team. Time zone is flexible.
Let’s build something solid
Tell us about your project — we'll send a plan and estimate within 1–3 days. No upfront fees, no obligations after.