Mobility and dispatch platforms, AI voice systems in production, telecom-scale messaging, IoT and commerce infrastructure. Most are client-owned products, so the source stays private — the problem, the role and the result do not.
18 projects
SaaS Fleet Management Platform
A fleet-management platform that replaced paper route sheets for Romanian logistics operators — vehicle records, driver assignment, fuel consumption and compliance reporting in one place.
6 months · 4 developers
Cash-on-delivery risk scoring for Shopify
Refused cash-on-delivery parcels cost the merchant shipping in both directions and no sale. CODcheck scores every order at checkout and hides COD for the risky ones — merchants report 30–50% fewer refusals.
Ongoing · Symphony Apps
Local SEO Intelligence Platform
A local-search intelligence platform for agencies: rank tracking across map grids, competitor comparison, and an AI-assisted audit that tells an account manager what to fix this week.
4 months · 3 developers
Cloud-native dispatch and AI voice for a large taxi fleet
A national taxi fleet rebuilt around cloud-native dispatch, real-time vehicle communication and an AI voice agent that takes routine requests off the human desk.
Ongoing · Symphony Apps
Taxi, ride-sharing, car-sharing and bike-sharing in one app
Romania's first mobility app to put taxi, ride-hailing, car-sharing and bike-sharing behind one account — taken from MVP to 100,000+ installs and 30,000+ rides in the first year.
3 years · 20 engineers
Monolith to microservices, in production
Citylink folded into HipCar, and the combined car-sharing, ride-sharing and taxi platform was moved off a .NET monolith one service at a time — with no big-bang rewrite and no pause in shipping.
3 years · 20+ engineers
Ride-hailing hardware and platform, New York & Boston
A US ride-hailing platform moved to AWS microservices, plus the in-vehicle hardware stack: digital taximeter, Bluetooth roof lights, passenger tablets, Stripe terminals and receipt printers, taken through regulatory approval.
Fractional CTO · Client engineering team
Voice-cloned commerce assistant
A Shopify retailer whose owner's voice is part of the brand. We cloned it and connected it to live catalogue and order data, so callers hear her answering — with the real stock figure.
Shipped · Symphony Apps
Real-time character calls for children
Personalised live calls from Santa, the Tooth Fairy and Casper — an earlier version depended on human actors and their calendars, so we automated the call and removed the ceiling.
Ongoing · Founder & architect
Live audience voting for national television
Live voting for Vocea României and other major Romanian shows: hundreds of thousands of SMS and voice votes arriving in the minutes after the host opens the lines, with no possibility of a replay.
Per broadcast · Symphony Apps
One protocol layer for many Bluetooth devices
A US IoT platform whose React Native and React apps controlled a range of Bluetooth devices, each speaking its own protocol. We gave the applications one consistent way to talk to all of them.
Modernisation · US client, San Francisco
Two-way sync with legacy on-premise systems
Connectors for merchants whose Shopify stores sit on top of older on-premise ERP and POS systems: products, variants, stock, prices, orders, customers and invoices synchronised in both directions, reliably.
Ongoing · Symphony Apps
Feeds, profiles and moderation at scale
Community products where the hard parts are not the profile page: feed ranking, notifications, abuse reporting and a moderation queue the operations team can actually work through.
Multiple engagements · Symphony Apps
Two-sided marketplaces for hiring
Job boards and recruitment marketplaces: employer posting and billing on one side, candidate search, applications and matching on the other, with the pipeline tooling recruiters live in.
Multiple engagements · Symphony Apps
GPS telematics and fleet visibility
Live vehicle position, trip history, geofencing and driver behaviour, ingested from GPS trackers and OBD devices and turned into reports a fleet manager acts on.
Multiple engagements · Symphony Apps
Balances, top-ups and payouts inside your product
In-app wallets with double-entry ledgers: card top-ups, held funds, transfers, refunds and payouts that reconcile to the cent against the payment provider.
Multiple engagements · Symphony Apps
Sensors, barriers and pay-by-app
Parking systems that connect occupancy sensors, LPR cameras and barriers to a mobile app — find a space, start a session, pay by the minute, leave without a ticket.
Multiple engagements · Symphony Apps
Agentic AI answering phone, WhatsApp and chat for eleven venues
A group running four boutique hotels and seven restaurants was losing bookings to unanswered phones during service. An AI concierge now takes reservations, changes and questions across three channels, books them into the live systems, and hands the hard ones to a human with the transcript attached.
5 weeks to first venue · Symphony Apps
Quotes from sponsors of the projects above, published with their permission. Where a client asked to stay unnamed, their project appears here without a quote rather than with an invented one.
“What used to be mountains of paper route sheets is now a digital platform our drivers actually use. They understood our logistics problem before they wrote any code.”
“They understood both the technical architecture and the marketing domain. That combination is rare and it showed in every review.”
“Rebuilt our entire platform on a modern stack, delivered on time, and have stayed a reliable partner for the ongoing work since.”
No account managers between you and the engineers. These are the people on the calls, in the repository and on the release. Surnames of employed engineers are shortened at their request.
Founder & CTO
Founder and technical lead. Shapes architecture, runs discovery, and still reviews the critical paths. Fifteen years of shipping across logistics, mobility, AI and commerce.
Founder
Co-founder and operations lead. Runs finance, client delivery and the project rhythm that keeps scope, budget and expectations aligned while the engineering team stays heads-down.
Senior Full-Stack Developer (Node.js, React, TypeScript, Laravel, MySQL)
Senior full-stack developer working across Node.js, React, TypeScript and Laravel/MySQL. Builds the features that touch both the interface and the data model.
Senior Mobile Developer (Flutter, native iOS, Swift)
Senior mobile developer. Builds Flutter apps and native iOS work in Swift, turning designs into apps that stay smooth under real-world use.
Lead Mobile Developer (native Android, React Native)
Lead mobile developer. Owns native Android in Kotlin and Java, and guides React Native deliveries from architecture to app-store release. The person the rest of the mobile team checks edge cases with.
Senior Mobile Developer (native iOS, Flutter, Swift)
Senior mobile developer. Combines native iOS in Swift with Flutter, with a QA mindset so releases are tested before they reach users.
Senior Mobile Developer (native Android, .NET backend)
Senior mobile developer building native Android apps in Kotlin and Java, with backend work in .NET when the mobile surface needs a custom service behind it.
Senior Mobile Developer (native iOS, Swift, CI/CD, Firebase)
Senior mobile developer. Builds native iOS apps in Swift with an eye for CI/CD, automated testing and the observability that catches issues early.
Senior Java/Kotlin Backend Developer (Spring Boot, Kafka, Docker, Kubernetes)
Senior backend engineer designing event-driven services with Spring Boot, Kafka and containerised deployments on Docker and Kubernetes.
Senior Frontend Developer & Edge AI (React, Next.js, TypeScript, Python, OpenCV, YOLO)
Senior frontend engineer shipping React, Next.js and TypeScript interfaces, with a parallel practice in edge AI using Python, OpenCV and YOLO for on-device vision.
Senior Full-Stack Developer (PHP/Laravel, Vue.js, MySQL)
Senior full-stack developer building PHP/Laravel APIs and Vue.js front ends, from database design to component polish.
Senior .NET Developer (C#, ASP.NET, SQL Server, Azure)
Senior .NET developer with deep experience in C#, ASP.NET and SQL Server backends. The person we call when a legacy system has to keep working while it is being replaced.
Senior Growth Manager (Google Ads, Meta, TikTok, GA4, Klaviyo)
Senior growth manager. Plans and runs paid acquisition across Google, Meta and TikTok, then ties it back to revenue rather than vanity metrics.
Consultant
Strategic consultant who joins early engagements to untangle the business process before scoping starts. Asks the questions that keep projects from solving the wrong problem.
Social Media Expert
Social media expert who builds content calendars and community workflows that match a product's launch rhythm. Turns engineering milestones into stories people follow.
A first call is thirty minutes and costs nothing. Bring the problem, not a spec — working out what to build is the part we are good at.
Or email office@symphonyapps.ro. We reply within one business day, in English or Romanian.