Jack Miro / Senior Full-Stack Product Engineer
I build and ship web, mobile and AI products for companies and agencies.
You work directly with the engineer.
What I build: SaaS platforms, Mobile apps, AI features, MVPs, Dashboards, Internal tools. Stack: React, Next.js, TypeScript, React Native, Expo, Node.js, Python, FastAPI, PostgreSQL, AI agents, BLE, GraphQL.
01 / Case studies
A selection of shipped work across Bluetooth hardware, multi-agent AI and enterprise scale. Each case covers the problem, my role and the result.
Tellspec
5products shipped across mobile, web and clinical
Tellspec's handheld NIR sensors analyse food and milk. I built the apps that pair with them, run the scans and turn raw spectra into results.
Mirox
16specialist AI agents orchestrated in production
Sellers lose hours tuning PPC bids by hand. In Mirox, specialist AI agents analyse the campaigns and recommend every bid, with the reasoning shown.
Vodafone
100k+users on the Vodafone campaigns I built
Seasonal campaigns that reach a huge customer base on launch day, on every kind of phone, inside an enterprise release process.
02 / Services
Web platforms, mobile apps and AI features for companies and agencies in Portugal, the EU, the UK and beyond. Fixed-scope projects or ongoing development.
Custom SaaS products, dashboards, client portals and internal tools: production web apps built to grow with the business.
Next.js · React · TypeScript · Node.js · Python · FastAPI · PostgreSQL
iOS and Android apps that do more than show screens: Bluetooth devices, native integrations, realtime data and complex workflows.
React Native · Expo · Native Android · BLE · Firebase
AI in a new or existing product: agents, LLM integrations, search over your own data and automation that saves real hours.
Gemini · OpenAI · Claude · pgvector · Python
Every project starts with a free call. Pick the closest and tell me about it.
03 / Why work with me
You work directly with the senior engineer responsible for architecture, development and delivery. No account managers, no layers, no handoffs between five specialists.
You talk to the engineer who designs, builds and ships your product. Decisions take a message, not a chain of meetings.
0account managers between us
Architecture, frontend, backend, mobile, AI, database and deployment. You don't need five specialists to ship one product.
1engineer, from first call to launch
I start from the business problem, not the ticket. I run discovery, push back when scope doesn't serve the goal, and demo to your stakeholders.
5teams shipped with, from startups to Deloitte
AI tooling speeds up the repetitive work. Architecture, product decisions, review, testing and production stay with me: faster execution, same accountability.
100%of changes reviewed and tested by me
For agencies
Senior white-label engineering for design, marketing and software agencies. Web, mobile and AI delivery under your brand, without adding permanent headcount.
04 / How projects work
The same path whether it's a three-week feature or a six-month platform. You always know what's happening, what's next and what it costs.
We talk through the product, the users, where things stand today and what success is worth to the business.
You getAn honest view on scope, risks and whether I'm the right fit.
Architecture, features, integrations and milestones, written down and agreed before the build starts.
You getA written scope, timeline and quote.
Short cycles with working builds you can click through. AI agents speed up the work; I review and test every change.
You getProgress you can see, not status reports.
Testing on real devices and real data, performance checks, and breaking it on purpose before your users can.
You getA release you can trust.
Deployment, production configuration and release. Then ongoing development, maintenance or new features, if you need them.
You getA live product, documented and handed over.
One engineer.
Start to finish.
05 / Pricing
Available for 1–2 new projectsNo fixed promises before I understand the work, and no surprises after. Every project starts with a free call and gets a written scope and quote before the build begins.
From€5k
A well-defined piece of work for a new or existing product.
From€10k
A new web, mobile or AI product, taken from idea, Figma or prototype to launch.
ScopeCustom
Bigger platforms and ongoing work, scoped and priced together.
Not sure where you fit? Describe the project and I'll tell you honestly whether I'm the right person for it.
Contracted and invoiced through Mirox, Lda., my company registered in Portugal · VAT PT517994160 · reverse charge for EU business clients.
Jakhongir MiralimovPT
06 / The human
Jakhongir Miralimov on paper, Jack everywhere else. I live in Portugal and work remotely with companies and agencies anywhere, on European hours.
I studied electronics and automation in Coimbra, retrained as a software engineer, and have spent six years shipping for Vodafone, Deloitte, Tellspec and my own company, Mirox. The titles changed; the pattern didn't. I'm the one talking to the client on Monday and shipping the answer by Friday.
AI made writing code fast. It didn't make it right. What clients pay me for is judgment: what to build, which solution wins, and proof that it works before it reaches their users.
07 / Track record
From high-traffic campaigns to connected devices and my own AI company. More responsibility each time, hands on the whole way.
Founded Mirox, my own Portugal-based company, and built its two products end to end: mirox.pt and optimirox.com.
Next.js · TypeScript · Python · FastAPI · Gemini · PostgreSQL · pgvector
Every shipped product across mobile, web, and AI, 2020 to now.
Mirox · 2025 — now
A multi-agent platform that forecasts conversion probability and coordinates Amazon PPC bid decisions through a 14-day validation mode before live execution.
Mirox · 2025 — now
A creator platform for regional Reels research, trend discovery, saved collections and AI-assisted scripts: marketing site, dashboard and backend built end to end.
Tellspec · 2024 — 2026
Tellspec's flagship food-scanning app, connecting to spectroscopy sensors through BLE for calibration, scanning, project management, and AI-powered analysis.
Tellspec · EU grant · 2024 — 2026
A nutrition platform built from scratch, with barcode scanning, ingredient analysis, health questionnaires, live data, personalized profiles, and a companion website.
Tellspec · EU TITAN grant · 2024 — 2026
An end-to-end product for real-time fish freshness analysis: an Android app connected to a custom Tellspec sensor and a public Next.js website.
Tellspec · 2024 — 2026
A clinical platform for premature infant milk analysis, covering infant tracking, donor management, milk pooling, risk scores, visualization, and PDF reporting.
Tellspec · 2024 — 2026
A hybrid mobile application for human milk banking operations, sensor-based analysis, barcode sample tracking, reporting, and clinical data visualization.
Deloitte · 2022 — 2024
A redesigned home and automobile insurance journey delivered with highly custom, pixel-precise interfaces inside the OutSystems environment.
Vodafone / Celfocus · 2021 — 2022
A high-traffic campaign application shipped across Android and iOS, backed by a microservices architecture and used by hundreds of thousands of customers.
Vodafone / Celfocus · 2021 — 2022
A responsive mobile campaign experience built for a large customer base across a broad range of Android and iOS devices.
IMAGIN'Us · 2020 — 2021
A multi-tenant platform for scheduling automotive test drives and collecting customer feedback, built end to end for major French car brands.
08 / Toolbox
Frontend to backend, phone to sensor, prompt to production, and the people around all of it. Drag the cube.
09 / Contact
I work with companies and agencies on web, mobile and AI products, from early technical decisions through production launch.
Projects from €5k · Remote worldwide