Start a projectinfo@ostra-inc.com
Software engineering studio

We design, build and scale software products.

Web, mobile, AI and Web3 for companies in the US, Germany, the UK and the Nordics. 30+ products shipped. Two of them acquired.

Vilore Foods
Fathom Analytics
Cimix
Baserow
HandwerkerPro
Screen Studio
Alltix
HelpKit
Uiflow
m.Doc
News UK · The Sun
Limometal
15do3
Divine Tech
30+
Products shipped. Eleven featured below.
2
Later acquired (Workday, CompuGroup Medical)
500M+
Page views a month served for News UK
300+
Hospitals and clinics on the m.Doc platform
02 — Selected work

Eleven products. Six countries. Two exits.

La Costeña
01 / 08Food & CPG · USAOngoing

Marketing & sales platform for a US food importer

Brand and campaign sites on HubSpot CMS with lead capture and CRM tracking, a B2B portal on SAP BTP, campaigns for 12+ distributed brands, and an internal multi-brand product catalog with spec sheets, approval workflow and shareable links for the sales team.

Client
Vilore Foods Company, San Antonio
Role
Marketing & sales software
Stack
HubSpot CMS · SAP BTP · JavaScript · Cloudflare
Link
vilore.com
Cimix
02 / 08HR tech · SwedenLive

AI-powered job platform for working in the Nordics

Job aggregation, skills and language matching, an AI CV and cover-letter generator and automatic translation of every posting into nine locales. 12,500+ candidates.

Client
Cimix, Sweden
Role
Full product build
Stack
Next.js · TypeScript · PostgreSQL · OpenAI · AWS
Link
www.cimix.ai
HandwerkerPro
03 / 08Trades SaaS · AustriaLive

From the first quote to the final invoice, in one system

Quote and invoice engine with dunning and VAT handling, a price list of ~55,000 positions, project and time tracking. Web app plus native iOS and Android.

Client
Baumanagement EB GmbH, Vienna
Role
Full product build, web + mobile
Stack
Next.js · React Native · Node.js · PostgreSQL
Link
client.handwerkerpro.com
Alltix
04 / 08Ticketing · USALive

Cloud ticketing and access control for live events

Seat maps, coupons and refunds, payments through Stripe Connect, PayPal, Square and Clover, QR and NFC check-in, Apple and Google Wallet passes, live dashboards.

Client
Alltix LLC, United States
Role
Full product build
Stack
React · Laravel · MySQL · Stripe · Pusher
Link
alltix.co
Uiflow
05 / 08No-code · San FranciscoAcquired by Workday, 2023

No-code builder for production front-end apps

Y Combinator startup (W21) that let enterprise teams visually build web apps. We were part of the engineering team behind the drag-and-drop editor with Figma import, REST and Firebase connectors, and Flowlang, a Turing-complete visual logic language. Backed with ~$21M, Uiflow was acquired by Workday in 2023 and the product was folded into their platform.

Client
Uiflow Inc., San Francisco
Role
Engineering team
Stack
React · TypeScript · Canvas / WebGL · Firebase
Link
www.ycombinator.com/companies/uiflow
m.Doc
06 / 08Digital health · GermanyAcquired by CGM

Patient portal platform for 300+ hospitals and clinics

Booking, video consultation, questionnaires and e-signature, with HL7 v2, FHIR and DICOM integrations. Multi-tenant, serving Charité and USZ, on Open Telekom Cloud.

Client
m.Doc GmbH, Cologne
Role
Outsourced engineering team
Stack
Java Spring Boot · Angular · Kubernetes · FHIR
Link
mdoc.one
The Sun
07 / 08News media · LondonEnterprise

Engineering for one of the UK's largest news sites

Front-end and WordPress VIP development for thesun.co.uk: CloudFront edge delivery, image pipelines, ad tech and consent integrations, push, comments and video. 500M+ page views a month.

Client
News UK (News Corp), London
Role
Embedded engineering team
Stack
WordPress VIP · React · Node.js · AWS CloudFront
Link
thesun.co.uk
Limometal
08 / 08Manufacturing · Bosnia and HerzegovinaLive

Full automation of a sheet-metal manufacturer

One connected system for the whole company: warehouse, production, sales and engineering share the same data, so an order moves from quote to engineering, the production floor and stock without re-entry or hand-offs.

Client
Limometal d.o.o., Cazin
Role
Company-wide automation, design and build
Link
limometal.com
More work
15do3
Beauty & wellness · BiHLive

Online booking for beauty and wellness salons

The first beauty and wellness booking platform in Bosnia and Herzegovina. Search salons by service and city, compare prices and reviews, and book a slot in a few taps, with SMS and Viber reminders. Web and mobile app, plus tools for salons to manage staff and schedules.

Client
15do3, Sarajevo
Link
15do3.ba
Divine Tech
Logistics · USALive

Transportation management system for trucking fleets

A cloud TMS built with trucking operators: order processing, carrier selection and route planning automated, with real-time shipment tracking and reporting for dispatchers and fleet managers.

Client
Divine Technology Group LLC, United States
Link
divinetech.us
Flavor of the Game
Food & CPG · Campaign · USALive

Flavor of the Game: a gamified fan campaign for La Costeña

Nationwide sweepstakes platform around the 2026 Soccer Championship: registration, team selection, trivia and photo challenges, points and live leaderboard, with 80 prizes including knockout-round tickets.

Client
La Costeña · Mexico Rico (Vilore Foods)
Link
fotg.mexicorico.com
03 — How we work

A steady process, so delivery is predictable.

1
Discovery

Two to three weeks to map users, systems and constraints. You leave with a scoped plan and an estimate you can hold us to.

2
Design

Flows, interface and architecture in parallel. Clickable prototypes before any production code.

3
Build

Two-week sprints, a staging environment from week one, and a demo at the end of every sprint.

4
Scale

Monitoring, performance and compliance work after launch. Most clients keep us on as their engineering team.

04 — Stack

Front-end

  • React
  • Next.js
  • TypeScript
  • Angular
  • Tailwind CSS
  • Vite

Mobile

  • iOS
  • Android
  • React Native
  • PWA

Back-end

  • Node.js
  • Java Spring Boot
  • Laravel
  • PostgreSQL
  • MySQL
  • Firebase

AI & Web3

  • OpenAI API
  • NEAR
  • WebAssembly
  • Smart contracts

Infrastructure

  • AWS
  • Kubernetes
  • Vercel
  • Cloudflare
  • Keycloak
  • GitLab CI
05 — Open source · Web3

Contributing to the NEAR Protocol JavaScript SDK

near-sdk-js is NEAR's official SDK for writing smart contracts in JavaScript and TypeScript, compiled to WebAssembly. Our fixes covered collection types, naming conflicts and build validation.

PRTitleStatus
#226fix: constructor validation on build+2,099 / −1,101Merged · Oct 2022
#203Fix: maps, sets and vector types+131 / −112Merged · Sep 2022
#215fix: method naming conflicts+146 / −0Closed · Sep 2022
github.com/near/near-sdk-js · 3 opened · 2 merged

Have a product in mind?
Let's talk.