Shape the right product
Turn a business problem or early concept into a focused scope, sensible roadmap, and decisions the team can act on.
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
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.
Architect for reality
Choose an approach that fits the product, budget, risk, and expected scale—not an architecture built for a conference slide.
Build across the stack
Mobile and web interfaces, backend services, APIs, databases, data pipelines, AI integrations, and cloud infrastructure.
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.
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 developmentSaaS & business platforms
Custom platforms that replace fragile manual processes, connect teams and customers, and give the business room to grow.
AI & automation
Practical AI features and automated workflows that reduce repetitive work or make an existing product more capable.
Data systems
Collection, normalization, validation, deduplication, and processing pipelines for large, difficult, or business-critical datasets.
Cloud architecture
AWS infrastructure, deployment automation, observability, reliability, and technical decisions that support the product after launch.
Apps 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.
Bible Study: Learn & Play
Bible Study: Learn & Play turns learning Scripture into a daily adventure. Follow Ezra through short, gentle lessons that mix Bible stories with simple games — True or False, Who Am I?, Pair Match, Link the Columns and Jigsaw — and earn stars, trophies and achievements as you go. It covers 12 themed modules, from Creation and the Flood to the Miracles of Jesus, Psalms, Proverbs, the Fruit of the Spirit, prayer and identity in Christ, and is available in 33 languages.
Built for: Teens and adults (ages 13+) who want to learn the Bible through short, friendly lessons and games, on their own or together with family and friends.
View Bible Study: Learn & Play
Jesus Color by Number
Jesus Color by Number is a peaceful color-by-number journey through the Gospels. Pick a number, tap the matching areas and watch a Bible scene come to life, from the birth of Jesus to His miracles and parables, the cross and the resurrection. Every scene comes with its story, its Bible reading and a short takeaway. It works fully offline, needs no account and is available in 34 languages.
Built for: Anyone aged 13 and over who enjoys coloring and wants a quiet way to spend time with the stories of Jesus, on their own, with family or in Sunday school.
View Jesus Color by Number
Bible Memory: Match & Discover
Bible Memory: Match & Discover is a calm card-matching game. Turn the cards, find the pairs, and every finished board rewards you with a moment from the life of Jesus: an original paper-cut style illustration, its name and one short fact worth remembering. The 149 cards cover the Gospel of Matthew from the birth of Jesus to the Great Commission. Choose from 3 to 12 pairs, with no timers and no penalties, share a picture of what you found, and play in any of 34 languages. It works fully offline and needs no account.
Built for: Anyone aged 13 and over who enjoys a quiet memory game and wants to get to know the life of Jesus one moment at a time, alone, with family or in Sunday school.
View Bible Memory: Match & Discover
Fruit of the Spirit Test
Fruit of the Spirit Test is a private, offline-first Christian self-reflection based on Galatians 5:22-23: love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control. You answer 54 short statements about the last 30 days, six for each fruit, on a five-point scale from Never to Almost always. The result is a 0-100 index for each fruit, shown as a nine-leaf bloom, with a short reflection and a small practical step for each one. There is no overall score and no ranking. It is a tool for reflection, not a diagnosis, not a measure of your spiritual life and not a substitute for pastoral care or professional help.
Built for: Adults and teens aged 13 and over who want a calm, honest moment of Christian self-reflection, on their own, in a small group or in conversation with a pastor or mentor.
View Fruit of the Spirit Test
Guess the Word
Guess the Word is a conversational Bible game where players try to discover a hidden person, place, object, or concept by asking questions. The game combines Bible knowledge, curiosity, and a friendly character-driven experience.
Built for: People who enjoy Bible stories, curiosity-driven games, and learning through conversation.
View Guess the Word
EverUsTogether
EverUsTogether is a private relationship companion designed to help couples and families intentionally record shared activities, meaningful moments, and the ways they spend time together.
Built for: Couples and families who want to care for their relationships through intentional, recurring actions and shared memories.
View EverUsTogetherWork 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.
Discuss your projectEmail: contact@rafaelrglima.com