From idea to a product ready to launch. Fast!

I work with founders and teams to design, build, and launch web and mobile products end-to-end, from strategy and architecture to frontend, backend, APIs, and mobile development.

Let's chat first, no strings attached.

We'll do a quick 1:1 to see what you need, and then we can both decide if it makes sense to team up.

Brands that trusted my work

Custom digital solutions for your business.

Websites, MVPs & Prototypes (PoCs)

From high-converting websites to functional MVPs, turn your idea into a polished digital product in just a few weeks. Validate your concept, reach your audience, and get to market faster.

Custom SaaS & Dashboards

Build software tailored to the way your business operates, or bring your data together in one place. Automate processes, track key metrics, and gain a clear view of your operations to make faster, more informed decisions.

Widgets & Integrations

Add new functionality to your product or connect the tools and services you already use. Fast, easy-to-integrate solutions designed to improve the user experience and deliver results.

Selected work

Case studies

Real products, integrations and technical challenges, from production mobile applications to systems that connect business workflows.

Mobile Product · AI · Real Estate

Gatelyze

From lead management to an AI-assisted sales workflow.

A production-ready mobile platform designed to help real estate professionals manage leads, follow-ups and relationship nurturing from a single workflow.

Production mobile app

Voice-enabled AI

Lead management

Sales workflow

The challenge

The goal was to move lead management away from fragmented tools and make the day-to-day sales workflow faster, more contextual and accessible while on the move.

The solution

A cross-platform mobile application was built around lead management and nurturing, with voice-triggered AI capabilities integrated directly into the product experience.

Outcomes

Published to both the Apple App Store and Google Play

Voice-driven AI interactions integrated into the core workflow

Centralised lead management and follow-up workflows

Designed for fast, mobile-first interaction by sales teams

Technology & delivery

React Native·iOS·Android·AI / LLM integration·Voice interaction·REST APIs

Web Platform · Recruitment · Integrations

TechIdentity

Turning recruitment data into a faster publishing workflow.

A software consultancy platform enhanced with a recruitment integration that enables job opportunities to be published dynamically and efficiently.

ATS Integrations

API-driven content

Dynamic vacancies

Performance-focused

The challenge

The digital presence needed to evolve into a more modern and engaging experience, capable of attracting greater interest from new prospects. At the same time, job opportunities were still dependent on less dynamic publishing processes.

The solution

A modern, conversion-focused web experience was created, complemented by an integration with the recruitment software that enables job opportunities to be presented dynamically, efficiently and with a strong focus on performance.

Outcomes

Dynamic job advertisement publishing

Reduced manual duplication between systems

Recruitment data surfaced through the existing web platform

Performance-conscious integration and frontend delivery

Technology & delivery

Next.js·TypeScript·API integration·Recruitment software·Dynamic content·Performance optimisation

Product thinking

Technology is shaped around the business workflow, not the other way around.

Integration-first

Existing systems can become part of a stronger product instead of becoming another isolated tool.

Production matters

The objective is not only to ship code, but to deliver software that can be operated, maintained and used by real customers.

Examples of what you can develop

Dashboards·Customer portals·E-commerce·Checkouts·Booking systems·Web platforms·Mobile applications·Back offices·Private areas·Automations·Integrations·AI Integrations·APIs·Internal tools·Order management·Inventory management·Payments·Subscriptions·Reports·Workflows·Custom systems

Engineer. Product Thinker. Problem Solver.

Software Engineer, with a degree in New Communication Technologies from the University of Aveiro, combining senior-level technical expertise with a strong product mindset. Throughout my career, I've built and launched products and systems for enterprise clients such as Scotiabank, Marsh McLennan, and Coast Capital Savings, working across the entire product lifecycle, from architecture and development to production. I work with founders and teams to turn ideas into solid digital products, solve complex technical challenges, and build systems designed to scale. I combine software engineering, artificial intelligence, and product thinking to turn business needs into simple, robust, and scalable solutions.

Enterprise Experience

Snyk · Probely · ITSector · Scotiabank · Marsh McLennan · Coast Capital Savings

Performance

Up to 700% faster applications

Product Impact

Checkout & onboarding optimization (improving onboarding, reducing churn & maximizing revenue)

Tech Leadership

Architecture · Mentoring · Delivery

Technical Expertise

Frontend·React · Next.js · TypeScript · Tailwind

Backend & APIs·Node.js · REST · GraphQL · PostgreSQL · MongoDB · Firebase

Mobile·React Native · iOS · Android

AI·LLMs · AI integrations · AI-powered products

Infrastructure & Deployment·VPS configuration · Docker · Custom servers · Linux · Deployment · CI/CD · Monitoring

LinkedIn ↗GitHub ↗

Testimonials

Words from people who've trusted me to build.

“We were looking to upgrade our website to something sleeker, more efficient, and fully aligned with our brand image. The final result completely blew past our expectations, delivering a highly professional design, cutting-edge technology, and a seamless user experience that has boosted our lead generation and client trust. On top of that, the fast turnaround time and exceptional support throughout the project were outstanding.”

André Santos

CEO at Tech Identity

“He was always diligent and careful in his work, fully compliant with all requirements, and demonstrated competence, integrity, and dedication in carrying out his tasks. He was always motivated, dynamic, and proactive. For all his commitment and professionalism, we can recommend him as an excellent professional, responsible and reliable in planning and executing his work, respectful and courteous...”

Lily Davey

Operations Manager at Snyk

“I needed a custom scraper to extract data from a highly complex platform, and João absolutely delivered. The tool is rock-solid, fast, and incredibly accurate. Beyond his technical skills, João was a pleasure to work with. He's always available, patient with our questions, and genuinely invested in getting it right. He made a complex project feel incredibly easy.”

James Garcia

Real Estate Broker at Private

“João turned our complex SaaS MVP and AI dashboard into reality flawlessly. The final product is fast, intuitive, and beautifully built. What sets João apart is his exceptional support and proactive attitude. He didn't just code, he guided us through every step with great energy and transparency. He's the ultimate solo partner for high-quality product delivery.”

Rosalyn Espinoza

CTO at Private

Pricing Models

Tailored investment structures for your specific requirements.

Project-based

€8,000*Starting from

Custom MVPs, widgets, and SaaS projects built production-ready, senior engineering, thoughtful architecture. A standard MVP covers frontend, backend, database, authentication, and 2–3 core features, enough to launch, test, and learn from.

*Final price depends on complexity, scope, design needs, and timeline, defined together before any work begins. Ongoing maintenance and evolution plans available from €600/month.

Retainer

€600/month*From

Ongoing maintenance, updates, and feature evolution, I stay close to your product so nothing breaks and everything keeps improving.

*Scope defined together. Light maintenance plans start at €600/month; active development retainers from €1,500/month.

Have an idea in mind?
Let's talk.

contact@joaogeraldes.com