Internal tools and back-office apps
Order management, quoting, scheduling, inventory, approvals and reporting — replacing the spreadsheet-and-email workflow with something your team can use without training and your business can audit.
Custom software development · Tallinn, Estonia
Custom software development for companies that have outgrown spreadsheets.
Koodi designs and builds bespoke web applications, internal tools and integrations for small and mid-sized companies — senior engineers, fixed scopes, and code you own outright.
When custom software is the right call
- Your core process runs on a spreadsheet that only one person truly understands.
- Off-the-shelf software covers 70% of what you need and licence costs keep climbing for the rest.
- Two or three systems don't talk to each other, so someone retypes the same data every day.
- You need a customer-facing portal, booking flow or quoting tool that reflects how your business actually works.
What we build
Customer-facing web applications
Portals, self-service, booking and configurator flows built as fast, accessible web apps. Estonian and English out of the box, mobile-first, and measurable from day one.
System integrations and APIs
Connecting CRM, ERP, e-invoicing, accounting, payment and logistics systems so data moves once and correctly. Includes monitoring and alerting, so a silent failure doesn't become a month-end surprise.
Legacy rescue and modernisation
Inheriting an app nobody maintains? We audit it, stabilise it, document it and modernise it in stages — no risky rewrite unless the numbers genuinely justify one.
How we deliver
01
Scoping workshop
One to two sessions to map the process, the systems and the constraints. You leave with a written scope, an architecture sketch and a realistic budget range — useful even if you build elsewhere.
02
Build in two-week increments
Working software every two weeks, deployed where you can click it. Weekly demos, a visible backlog and honest updates when something takes longer than planned.
03
Handover and support
Source code, documentation and infrastructure are yours. Continue with us on a support retainer or hand it to your own team — we make sure either option is genuinely possible.
Common questions
- How much does custom software development cost?
- Small internal tools and integrations typically land in the low five figures; a full customer-facing application is larger and depends heavily on scope. We quote after a scoping workshop rather than guessing from a brief, and we break delivery into increments so you can stop or change direction at each one.
- How long does a project take?
- A focused internal tool or integration is usually 4–10 weeks. Larger applications ship a usable first version in about three months and grow from there. We deliberately release something usable early rather than disappearing for half a year.
- Who owns the code?
- You do — fully, including source code, repositories, infrastructure configuration and documentation. We don't build on a proprietary platform that locks you into us, and we use mainstream technologies so another team could pick the project up.
- Should we buy off-the-shelf software instead?
- Often, yes — and we'll say so. Custom development makes sense when the process is a genuine competitive difference, when licence costs at your volume exceed building, or when no product fits without expensive workarounds. If a standard product covers it, that recommendation costs you one workshop instead of a project.
- What technologies do you use?
- TypeScript, React and Node on the front and back end, PostgreSQL for data, and cloud hosting in the EU. Mainstream, well-documented, easy to hire for — the goal is that your software is still maintainable in five years, by anyone.
- Do you work with companies outside Estonia?
- Yes. We're based in Tallinn and work remotely with clients across the EU, in English or Estonian, with occasional on-site sessions for scoping and handover when it helps.
Bring us the process that's holding you back.
Describe what you need built and how it works today. We'll come back with an honest view on scope, cost and whether custom software is the right answer at all.
Discuss your project