Senior software engineer · Product builder

I design, build, and launch software products.

I’m Rafael Lima. For more than 10 years, I’ve turned complex ideas into mobile apps, SaaS platforms, AI tools, data systems, and the infrastructure that keeps them running.

  • 10+ yearsbuilding software
  • End to endidea to production
  • InternationalUS · Canada · Europe
Rafael Lima, senior software engineer and product builder

Experience across the full product lifecycle

Senior judgment and hands-on execution, in one person.

I don’t wait for a perfect specification. I help define the problem, make the technical trade-offs, build the product, deploy it, and improve it once real users are involved.

01

Shape the right product

Turn a business problem or early concept into a focused scope, sensible roadmap, and decisions the team can act on.

02

Architect for reality

Choose an approach that fits the product, budget, risk, and expected scale—not an architecture built for a conference slide.

03

Build across the stack

Mobile and web interfaces, backend services, APIs, databases, data pipelines, AI integrations, and cloud infrastructure.

04

Operate what ships

Release, monitor, secure, maintain, and improve production software instead of treating launch day as the finish line.

What I build

Software that has a job to do.

The format changes, but the standard does not: a clear problem, a useful product, and a system that can be trusted in production.

01

Mobile products

Useful Android and iOS applications designed around a real user need, with the backend, privacy, release, and support work handled as part of the product.

Explore app development
02

SaaS & business platforms

Custom platforms that replace fragile manual processes, connect teams and customers, and give the business room to grow.

03

AI & automation

Practical AI features and automated workflows that reduce repetitive work or make an existing product more capable.

04

Data systems

Collection, normalization, validation, deduplication, and processing pipelines for large, difficult, or business-critical datasets.

05

Cloud architecture

AWS infrastructure, deployment automation, observability, reliability, and technical decisions that support the product after launch.

Products under my own name

The strongest proof is a product people can use.

These products keep me close to the decisions every founder faces: what to build, how to ship it, and what it takes to support it after release.

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Selected work

Products on the surface. Serious systems underneath.

My work spans customer-facing software and the architecture, data, infrastructure, and operational decisions required to make it dependable.

Data engineering · Applied AI

Large-scale property and public-record data systems

The problem

Raw address, property, real-estate, and public-record data arrives fragmented, inconsistent, duplicated, and difficult to use reliably.

The system

Collection and processing pipelines for normalization, validation, entity matching, deduplication, enrichment, and structured access.

My role

Architecture, backend engineering, data modeling, large-scale processing, infrastructure, and intelligent tools built on the resulting data.

Delivered value

Made difficult source data consistent and usable for downstream products, analysis, automation, and decision-making.

Mobile product · AI interaction

Guess the Word

The product

A conversational Bible guessing game where players ask questions to discover a hidden person, place, object, or concept.

The challenge

Create an open-ended question experience that remains understandable, responsive, and grounded in the game’s knowledge domain.

My role

Product concept, interaction design, mobile development, backend decisions, release, privacy, and ongoing product ownership.

Current outcome

The Android application is published, supported, and represented by an official product page on this site.

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About Rafael

Engineer, product thinker, and operator.

I’m a software engineer and technology entrepreneur working internationally. I enjoy finding valuable problems, reducing them to clear decisions, and doing the hands-on work required to turn those decisions into useful software.

I combine engineering depth with product judgment, business awareness, and a strong bias toward execution. I’m available for projects across the United States, Canada, and Europe.

More about how I work

Work with me

Bring me a worthwhile problem.

I work best with founders and businesses that need an experienced technical partner—not only someone to implement a fixed list of tickets.

Good engagements usually involve building a new app or SaaS product, improving a platform that has outgrown its foundations, creating an AI or data system, or providing senior technical leadership through an important stage.

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