Fully accountable.
One team owns it, from scope to go-live.
We build and run the systems your business depends on.
Platforms, B2B commerce and integrations that stay in production for years. Scoped by the engineer who builds it.
Maintained after go-live.
Selected work
Systems we have built or audited. Client names are under NDA; we walk you through any of them on a call.
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01
Enterprise data & reporting platform
Enterprise reportingGroup-wide reporting for an industrial enterprise: production and regulatory metrics from plants, ERP and the data warehouse in one platform.
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02
eSIM provisioning platform
TelecomProvisioning, order and subscription management for a travel-connectivity provider, integrated with mobile operators' systems.
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03
B2B ordering portals
Wholesale & retailCustomer-specific pricing, order flow and stock from the ERP, EDI with retail chains, card and invoice payments.
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04
Cost-allocation engine
WholesaleAllocates costs and margin per product line from ERP data, replacing a spreadsheet nobody could change safely.
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05
Technical audit and target architecture
Tax, customs & complianceThree-week audit of a customs and tax-compliance platform: findings register, target architecture and a phased rebuild plan.
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06
Payment QR standard and merchant registry
Fintech & paymentsSigned QR stickers, a merchant registry with Smart-ID onboarding, and a payment page that hands off to the bank app. Built for the non-profit e-QR Payment Standard MTÜ, in pilot in Estonia.
What we do
Any industry. Scoped, estimated and agreed in writing, shipped with tests and documentation.
01Build
Web platforms, e-commerce, web and mobile apps, internal tools and the integrations around them.
02Take over and stabilise
Live systems built by someone else. We audit, fix what is failing, and run them on a maintenance retainer, with a named engineer who answers.
03Audit & Discovery
For a system nobody fully understands any more, or a rebuild nobody has scoped. You get a findings register, a target architecture and a phased plan with estimates, usable with us or with anyone else.
How to work with us
01
Projects
Scoped, designed, built and handed over. A single feature or a multi-year platform.
Fixed price or time and materials
02
Dedicated engineers
One developer or a team, working in your tools and your process.
Monthly, scaled with notice
03
Maintenance
Monitoring, security updates and small changes, ours or a system someone else built.
Retainer priced to the systemDelivery standard
How we work, on every project, whatever its size. A core team, plus a bench of developers we have worked with before.
6 months
Warranty on everything we deliver.
Defects fixed at no cost.
01
02
Shipped when right.
Issues get fixed, not logged and forgotten.
03
Agreed in writing.
Scope and price agreed before work starts.
04
Tested and monitored.
Tests, docs and alerting from go-live.
05
Senior sign-off.
A senior engineer signs off every release.
And the engineers, designers and QA we bring in per project.
Team
The people who scope, design and build.
Henri Parkja is the founder of Parkja OÜ, an Estonian software engineering practice. An engineer by training, he has spent over ten years building and delivering technical systems, and since 2020 has focused on software: full platforms taken from architecture to production, mobile applications, enterprise integrations and the automation around them, across whatever stack the problem calls for.
At Parkja he scopes every project, owns the architecture and signs off on what ships. He holds a BSc in Electromechanical Engineering from KU Leuven.
What that looks like in practice
Contact
Start a conversation.
For business owners who want systems that work, built and run by an engineering team they don't have to hire. Companies and agencies alike.