GAGA Menjačnica
A fast Next.js platform for a currency exchange and gold & silver dealer in Novi Sad.
Read case studyWeb & Platforms
Fast, multilingual platforms, built to last.
From investor sites to 22-language customer platforms and SaaS MVPs: we build with Next.js, React and Node. Fast, accessible, search-friendly and easy to extend.
Problems we solve
“Our site is slow and hard to update.”
A fast Next.js platform with a content workflow your team can actually use.
“We need many languages without chaos.”
Proper i18n architecture: one URL per locale, hreflang, translation workflows and consistent formatting.
“We need an MVP, fast — but not throwaway code.”
Production-grade foundations from day one: auth, payments, admin, tests and CI.
“Our project is hard to explain to investors.”
Clear information architecture that takes people from overview to detail.
What we build
01
Websites & web apps
Next.js and React applications with excellent Core Web Vitals, accessibility and SEO foundations.
02
Multilingual platforms
Proper i18n routing, hreflang, locale-aware formatting and scripts — including Latin and Cyrillic side by side.
03
SaaS MVPs
Authentication, dashboards, payments and admin — a production-grade MVP in weeks, not months.
04
Dashboards & portals
Customer and member portals with secure authentication and role-based access.
05
Real-time data integrations
Live rates, APIs and exports (PDF, Excel, CSV, XML) wired into a fast, cache-friendly frontend.
06
Investor & project sites
Complex projects explained clearly: technology, financials, funding and downloads in one credible presentation.
What you get
- Responsive, accessible UI
- Multilingual routing with hreflang and sitemaps
- Performance budget and Lighthouse checks
- CMS or content workflow that fits your team
- Deployment on Vercel or your infrastructure
- Full IP transfer and handover documentation
Packages
Transparent starting prices. Every project begins with a free scoping call and a written proposal.
Starter
Web Starter
Landing page or site with up to 5 pages in 2 languages.
from$2,500
- Responsive, accessible design
- 2 languages
- SEO & performance basics
- Contact form
Growth
Web Growth
Multilingual website or web app with CMS and integrations.
from$6,000
- Multiple languages with hreflang
- CMS for your team
- Third-party integrations
- Analytics & performance budget
Enterprise
SaaS MVP & platforms
Authentication, dashboard, payments and admin — an MVP in 4–6 weeks.
from$15,000
- Login & roles
- Payments
- Admin panel
- Production deployment
Not sure which package fits?
Answer five short questions and get an indicative budget range and duration for your project.
Selected work
Client work and showcase projects
Client platforms shown with permission, plus our own clearly labelled showcase projects you can try.
Sisak Green
A bilingual (DE/EN) investor platform for an industrial waste-to-energy project in Croatia.
Read case study
RCIID
A platform for an Austrian blockchain forensics firm that presents crypto transaction tracing to lawyers, authorities and victims.
Read case studyShowcase projects by sigmacode
- sigmacode Assistant
- Document Q&A with citations
- Milestone Escrow
- Token + Vesting + Staking
- SigmaNFT Collection
- Gold-Backed Token (RWA)
- Invoice data extractor
- Smart Contract AI Reviewer
Tech stack
Web & Platforms
Cloud & DevOps
Mobile
How a project runs
- 01
Discovery
A free scoping call to understand your goals, users and constraints. We ask the uncomfortable questions early.
- 02
Plan
A written proposal with architecture, scope, milestones, risks and a fixed price or milestone budget.
- 03
Milestones
We build in short iterations with working demos. You get repository access and can give feedback at every step.
- 04
Handover
Deployment, documentation and a walkthrough for your team. Full IP transfer on final payment.
- 05
Care
Optional retainer for maintenance, hosting, security updates and continuous improvement.
Frequently asked questions
Which stack do you use?
Mostly Next.js, React, TypeScript and Node, deployed on Vercel or your own infrastructure. We adapt to existing stacks where it makes sense.
Can you handle many languages?
Yes — one of our client platforms runs in 22 languages, including Serbian in both Latin and Cyrillic script.
Do you provide content and translations?
We set up the structure and can deliver AI-assisted translations with human review for EN, DE, HR and SR.
Who hosts the site afterwards?
You decide. We can hand over completely, or take care of hosting, updates and monitoring as part of a retainer.
How long does a website or MVP take?
A focused website typically takes a few weeks; a SaaS MVP around four to six weeks, depending on scope. You get a milestone plan with the proposal.
Will our site be fast and accessible?
Performance and accessibility are part of the definition of done: we work with performance budgets, semantic HTML and automated checks.
Can you redesign or migrate an existing site?
Yes. We review the current setup, keep what works, and plan migrations so URLs, SEO and content survive the move.
Let's scope your project
A short call is enough to tell whether and how we can help, and what it will roughly cost.
Prefer to write first? Write to us