Radical transparency
Public pricing, open scope and weekly reports. You always know where your money is going.
Companies that have built with us
10+
Years of experience
150+
Projects delivered
98%
Client satisfaction
24/7
Dedicated support
About · 01
Built for companies that need to grow fast.
We are a custom software development company focused on delivering high-impact technology solutions for businesses pursuing innovation and accelerated growth.
With more than a decade in the market, we turn complex ideas into scalable digital products. Our track record spans professional photography with facial recognition, driver apps, fintech, e-commerce, integrations and high-volume mobile products.
We combine agile methodologies, deep technical expertise and an obsessive focus on results — so your project ships on time, on budget and with the quality you deserve.
We are not a generic agency. We are engineers shipping senior-level production code, with agile management included and full visibility into the process.
Pillars · 02
What sets us apart.
Four non-negotiable principles that guide every project, sprint and line of code.
Real speed
MVP live in 4 to 8 weeks. Two-week sprints with demos, continuous deployment and iteration in hours — not months.
Production-grade quality
Reviewed, tested, documented code. Senior devs only, code review on 100% of PRs, 80% minimum coverage.
Commitment to deadlines
If we're late, you get the discount. We work with a contractual SLA and a penalty written into the clause — no excuses.
Journey · 03
A decade building real software.
From three engineers in a coworking space in Barra to a cross-functional team serving clients in 6 countries.
2014
FoundingThe start in Barra
Three engineers leave a multinational and found Sierra on a simple promise: deliver software on time and on budget. First client signed within 30 days.
2017
GrowthFirst dedicated team signed
We launched the Dedicated Team model, today our flagship offering. The team grows to 12 people and we take on our first clients outside Rio.
2019
ExpansionCloud-native operation
100% of deliveries move to cloud-native architecture on AWS and Azure. We win enterprise clients in healthcare and logistics.
2022
Going globalFirst client outside Brazil
We start serving startups in Portugal, Mexico and Colombia. The team reaches 40 people, 100% remote-first with headquarters in Rio.
2024
Public pricingPrices on display
We published our full price list on the site — rare in this industry. Qualified leads tripled in 6 months.
2026
Today150+ projects delivered
More than 60 senior professionals, 6 countries served, 98% satisfaction. And we keep growing — slowly, with quality.
Leadership · 04
Who's behind the code.
“Good software isn't just pretty code. It's a product that holds up under real users, real billing, real operations and continuous evolution without becoming a burden for the client.”
Ricardo Sierra
Founder & software architect · 20+ years in engineering
60+
Senior professionals on the team
6
Countries served
Ricardo Sierra
Technical architecture
PM
Product
Discovery & roadmap
DEV
Engineering
APIs, data and backend
UX
Design
Product UX/UI
OPS
Cloud & DevOps
AWS, CI/CD and observability
APP
Mobile
Android, iOS and Flutter apps
Services · 05
Models ready to start tomorrow.
Three paths with public pricing. You choose the format that fits your moment — we deliver on time and on budget.
Custom Software Development
For companies with a defined scope that need full predictability on timeline and cost.
- Scalable, cloud-native architecture
- Clean, tested and documented code
- Seamless legacy integration
- End-to-end optimized performance
Starting atR$ 15.000
Dedicated Team
A full team dedicated to your product: Dev, Design and QA with agile management included.
- Full-time cross-functional team
- Agile management + rituals included
- Flexibility to scale
- Cultural fit with your team
InvestmentR$ 35.000/month
MVP in 4–8 weeks
From idea to live in up to two months, validated with real users and ready for fundraising.
- Discovery, prototype and validation
- Conversion-focused UX/UI design
- Fast development in sprints
- Deploy + initial post-launch support
Starting atR$ 25.000
Case Studies · 06
Products that are already live.
Existing projects, with real products, real users and scale problems that demand pragmatic engineering.
Photography + AI 
Banlek
A professional photography ecosystem with online sales, facial-recognition search, real-time delivery and modules for photographers, events and end customers.
OperationBrazil
View project →
Mobility 
StopClub
A product for drivers and delivery couriers, with support hubs, radar, benefits, subscriptions and safety tools for people who work the streets.
Community100k+
View project →
Gig economy 
GigU
A smart copilot for rideshare drivers: it ranks offers in real time, calculates net profit, logs history and helps you make a better call on every ride.
Downloads1M+
View project →
Stack · 07
Technology that holds up as you grow.
We work with the modern stack that scales alongside you — front end, back end, cloud and data.
React
Vue.js
Angular
Node.js
Laravel
Python
AWS
Azure
Docker
Kubernetes
PostgreSQL
MongoDB
Methodology · 08
Four stages, zero surprises.
Our agile process guarantees full visibility from kickoff to deploy — you know exactly what is being built and when.
2-week sprints
Biweekly demos, continuous scope adjustment and prioritization alongside your team.
01
Discovery & Planning
Stakeholder workshops, rapid prototypes, clear estimates and an approved roadmap before the first line of code.
02
Development Sprints
2-week cycles, daily standups, mandatory code review and continuous testing. You follow everything in real time.
03
Demos & Feedback
A presentation every sprint, adjustments folded in quickly and continuous prioritization alongside your team.
04
Deploy & Support
Production delivery with monitoring, observability and continuous evolution — 24/7 support included in dedicated team plans.
Engagement · 09
Three ways to work together.
From fixed-price projects to targeted reinforcement for your team — choose the model that best fits your moment.
Model · A
Fixed-Price Project
Ondemand
Well-defined scope, fixed timeline and fixed price. Ideal for MVPs and one-off deliveries with full predictability.
- Fixed budget and timeline
- Documented and approved scope
- Turnkey delivery with handover
Model · B
Dedicated Team
R$ 35k/month
A full-time team dedicated to your product, with agile management included and continuous month-to-month evolution.
- Dev + Design + QA + PM
- Two-week sprints with demos
- Scale up on demand
- 24/7 support included
Model · C
Staff Augmentation
R$ 12k/dev
Senior devs who plug straight into your existing team. No overhead, no duplicated management.
- Pre-vetted senior devs
- Ramp-up in up to 1 week
- Guaranteed replacement
Traction · 10
Public signals of a live product.
More important than a pretty promise: products already used at scale, with operations, support and continuous improvement.
Banlek combines photo sales, facial recognition, real-time delivery and nationwide event operations.
StopClub brings together support hubs, subscriptions, benefits, radar and tools for the daily routine of drivers and couriers.
GigU uses real-time data to help drivers pick better rides and track profit per km and per hour.
Operations · 11
A good team is one that delivers with you.
Hybrid work out of Rio de Janeiro, with short rituals, clear documentation, a direct channel and a focus on putting a real product in users' hands.
Rio de Janeiro · remote-first
Product, engineering, design, QA and DevOps on a simple cadence: prioritize, build, test, ship and measure.
Jardim Botânico · RJ
Two-week sprints
Demos and continuous deployment
Two-week sprints
Demos and continuous deployment
Quote · 12
Get a tailored proposal in 24h.
Tell us a bit about your project. Our team reviews the brief and comes back with scope, timeline and an estimated price in less than one business day.
Proposal within 24 business hours Guaranteed fast reply. If we take longer, you get the discount.
Contact · 13
Let's talk.
Straight to WhatsApp
+55 (21) 99919-3898
Reply within minutes during business hours. Ideal for quick questions about scope, price or timeline.