Web applications
Dashboards, portals and SaaS products — fast, accessible, and built to survive past version one. Typed end to end, tested where it counts, and deployed on infrastructure you can afford to keep.
NewKiln is live — our own product, in production
Software your team can actually own.
Senior engineers designing and shipping web, mobile and AI products on a fixed written quote for an agreed project scope. Weekly demos. Your repos, cloud accounts and code from day one.
- Senior engineers only
- Fixed quote for agreed scope
- You own the code
- Reply within 1 business day
4–8 weeksTypical MVP, kickoff to live
WeeklyWorking demo links from week one
100%Code and account ownership, yours
1 dayReply time on every enquiry
Services
Everything it takes to get a product live
We keep the range narrow on purpose — these are the things we are good enough at to put our name on.
Mobile apps
iOS and Android from a single codebase, shipped to both stores without doubling the budget — including the parts nobody enjoys: store review, push, deep links and release tracks.
Startup MVPs
A working product in front of real users in weeks — scoped tight so you learn something before you spend everything.
AI features
Chat, search, extraction and agents built on LLM APIs — added where they earn their keep, with evals and cost caps, not as a sticker.
Cloud & DevOps
Deployments that don’t wake you up: CI/CD, observability, backups you’ve actually restored from, and a hosting bill that makes sense.
Project rescue
Inherited a codebase that scares everyone? We audit it, tell you the truth, stabilise it, and get releases moving again.
Not sure which of these you need?
Bring us the problem rather than the spec. Half an hour on a call is usually enough to tell whether it’s a four-week build or a bad idea — and we’ll say which.
Capabilities
Enterprise Software & Business Systems
We build custom business software for companies that need secure workflows, financial systems, internal tools and automation.
Finance & Accounting Systems
Invoicing, billing, ledgers and expense flows that reconcile cleanly, with roles and audit trails built in.
ERP & Operations Platforms
Inventory, orders, resources and planning unified in one system — instead of five disconnected spreadsheets.
Document Management
Structured storage, versioning, approval chains and search for the documents a business actually runs on.
Workflow Automation
Approvals, handoffs and repetitive processes automated end to end, with people kept in the loop where judgement matters.
Data Dashboards
Operational reporting that turns scattered data into decisions — live, role-aware and exportable.
AI-powered Business Tools
Extraction, classification and assistants embedded into daily operations — measured for accuracy and cost.
Every engagement runs on the same terms as the rest of our work — a written scope and agreed pricing, weekly demo links and systems you fully own.
Products
We build our own software too
Products of our own, designed, built and operated by SilkByteX — the same standards we bring to client work.
Kiln
LiveA data-enrichment waterfall that prices runs up front and bills only for verified results.
A SilkByteX product · kiln.zelvante.com
Sitrep
LiveA focused news briefing experience that makes important updates and developing stories easier to scan — without the noise.
A SilkByteX product
Selected work
What we build
Explore the problem, the build and the engineering behind our products and project work.
Case study 01
Kiln
LiveKnow what enrichment costs before you run it
Problem
Contact-data providers bill per row — misses, errors and cached repeats included — so the invoice rarely matches what a run actually verified.
Build
A provider waterfall that chains lookups into a single run and stops at the first verified hit, with the cost and expected match rate shown before a run starts.
Result
You pay only for verified results — misses, errors and cached repeats are free — and spend caps enforced server-side mean a bad run can’t become a bad invoice.
Case study 02
Sitrep
LiveA calmer place to follow the news.
Problem
Important updates are often scattered across noisy feeds, making it difficult to quickly understand what matters.
Build
Sitrep turns that experience into a focused briefing interface built for fast scanning and clear information hierarchy.
Result
A lightweight public experience where users can move through important updates with less distraction.
Case study 03 · Enterprise Software
Rolus
Swiss invoicing and accounting, built for compliance.
Rolus is a cloud-based invoicing and accounting platform designed for Swiss micro-SMEs, sole traders and freelancers — invoicing, Swiss QR-bills, VAT workflows, bank reconciliation, double-entry bookkeeping, receipt capture and accountant access in one system.
Problem
Swiss small businesses must meet formal accounting rules: Swiss QR-bills, ESTV VAT workflows, double-entry bookkeeping and bank reconciliation, each with real consequences when applied wrong. The engineering challenge was to make those workflows reliable without importing the unnecessary complexity — and cost — of enterprise accounting suites.
Build
We built a focused Swiss finance platform with:
- Quotes, invoices and credit notes
- Swiss QR-bill generation
- VAT calculations and ESTV-oriented workflows
- ISO 20022 / camt.054 bank reconciliation
- Double-entry accounting
- Receipt capture
- Accountant and fiduciary access
- Multilingual support
Engineering
- Strict multi-tenancyTenant scope is enforced centrally to prevent cross-tenant data access.
- Integer-only financial calculationsFinancial values use integer, minor-unit calculations instead of floating-point money arithmetic, avoiding rounding discrepancies.
- Append-only ledgerAccounting corrections use reversing entries rather than silently modifying historical records.
- Atomic document issuanceIssuing a financial document coordinates numbering, snapshots, QR validation, journal entries and audit data as one consistent operation.
Result
A finance platform designed around Swiss accounting workflows with strong data isolation, deterministic financial calculations and auditable ledger behaviour.
TypeScript monorepo · Next.js · React · tRPC · Tailwind CSS · PostgreSQL · Prisma · Vitest · Playwright · Vercel
How we build
Three things we won’t trade away
Your ownership, direct engineer access and clear pricing guide every project. We make responsibilities clear from the start.
You own everything, from day one
Repositories, cloud accounts, domains and credentials are created under your name — not ours. If you walk away mid-project, you lose nothing but us.
Direct access, clear accountability
Talk product and technical decisions directly with the engineers building your software. One accountable technical lead is responsible for scope, technical decisions and delivery.
A fixed price for your written scope
Your written scope defines what is included in the fixed quote. We absorb any effort we underestimate within that scope. If you request work outside it, we discuss the impact and agree the price before starting it.
Process
From first call to launch
Six steps, in order, every time — and you always know which one we’re on.
01
Discovery
A free call where we work out what you’re building and why. If we’re not the right team, we say so on that call.
02
Scope & fixed quote
We agree a written scope and fixed quote before starting: what ships, what it costs, and when. For requests outside that scope, we discuss the impact and agree the price first.
03
Build
Design and build by the senior engineers you met on the discovery call, with one accountable technical lead guiding delivery.
04
Weekly demo
A running demo link in your inbox at the end of every week, starting week one. Progress you can click, not slides.
05
Launch
We deploy to production, on infrastructure in your name.
06
Handover & support
Every credential and repo transferred, the build documented, and 30 days of post-launch support for fixes against the agreed project scope.
Commitments
Promises with numbers attached
Anyone can say they communicate well. These are the specific things you can hold us to, in writing, on every project.
1 business dayReply time
Maximum, on any message you send us.
Every weekWorking demo
A link you can open, from week one onward.
0Surprise invoices
Your fixed quote covers the written scope. For work outside it, we discuss the impact and agree the price before starting.
30 daysPost-launch fixes
Defects, regressions and issues with agreed functionality. Additional scope is priced separately before work starts.
Pricing
Ways to work with us
Three shapes, depending on where you are. Every one starts with the same free call and a written scope that defines what is included. Fixed quotes cover that scope. If you request work outside it, we discuss the impact and agree the price before starting it.
Audit
From $1,500Fixed fee, one to two weeks
Who it’s for
You have a codebase and need an honest read on it before deciding anything.
What’s included
- Architecture, security and dependency review
- A written risk list, ranked by what will bite first
- A remediation plan you can hand to any team
- No obligation to use us for the work
Build
$5k – $25kTypical clearly scoped builds; focused MVPs usually take 4–8 weeks
Larger business systems and multi-phase platforms receive a custom scope and quote. Complex finance, ERP and internal systems are scoped separately; $25k is not a project ceiling.
Who it’s for
You have a product to build and launch, and you want the number before the code starts.
What’s included
- Fixed quote for the written scope, agreed before work starts
- Weekly demo links from week one
- Design, build, deploy and hand over
- 30 days of post-launch support for fixes against the agreed project scope
Partner
CustomRolling monthly retainer, one month’s notice
Who it’s for
You are shipping continuously after launch and want reserved senior capacity.
What’s included
- A named senior engineer, reserved days each month
- Roadmap and release planning with your team
- Monitoring, dependency and security upkeep
- One month’s notice, no exit fee, full handover
The tools we reach for
TypeScriptReactNext.jsNode.jsReact NativePostgreSQLPythonAWSCloudflareDockerStripeAnthropic APIPlaywrightTerraform
The SilkByteX promise
If we stop being the right team, you leave with everything
We would rather lose a project than hold one hostage. Nothing in how we work depends on you being unable to go elsewhere.
- No lock-in — every repo, account and credential is already yours
- No surprise invoices — scope changes are discussed and priced before work starts
- Direct engineer access, with one accountable technical lead
- A documented handover, whether you leave after one project or ten
FAQ
Fair questions, straight answers
How much does a project cost?
Typical clearly scoped builds range from $5,000 to $25,000. Larger business systems and multi-phase platforms receive a custom scope and quote, including complex finance, ERP and internal systems. $25,000 is not a project ceiling. Your written scope defines what is included in the fixed quote. We absorb any effort we underestimate within that scope. If you request work outside it, we discuss the impact and agree the price before starting it. Fixed pricing does not mean unlimited scope.
How long until something is live?
A focused MVP typically ships in four to eight weeks. You do not wait until the end to see it: a running demo link lands in your inbox at the end of every week, starting with week one.
Who actually does the work?
The engineers you meet on the first call build your product. You communicate with them directly about product and technical questions, with one accountable technical lead responsible for scope, technical decisions and delivery.
Do I own the code?
Yes, all of it, from day one. The repository, cloud accounts, domains and every credential are created under your ownership, so you could walk away at any point and lose nothing.
Can you take over an existing codebase?
Yes. We start with a paid audit, tell you honestly what state it is in, and give you a plan — whether or not that plan includes us.
What happens after launch?
Build projects include 30 days of post-launch support for fixes against the agreed project scope: defects, regressions and issues with the agreed delivered functionality. This does not include new features, redesign work, new integrations or additional product scope. We discuss the impact and agree the price for that work before starting it. After 30 days, you can arrange a monthly retainer or take over with your own team.
Contact
Tell us what you’re building
We reply within one business day with honest next steps — even when the honest answer is that you don’t need us yet.
- A 30-minute call with an engineer to discuss your product and technical questions.
- You leave the call with a rough shape, a rough number and a clear next step.
- Prefer email? hello@silkbytex.com