Custom Web App Development Services
A senior engineer on subscription. I build your features, clean up older code that's slowing the product (tech debt), and ship in 2-4 day cycles. No hiring, no contracts, cancel anytime.
This works best if you're…
The subscription model is designed for specific situations. Here's where it shines.
Startups post-fundraise
You've raised, your first working version (MVP) is live, and now you need a reliable engineer to ship features fast without breaking what's working.
Scale-ups with older code slowing the product
Your product grew fast and the codebase is suffering for it. You need someone to clean it up (pay down tech debt) while keeping the business moving.
Founders without in-house dev
You need a senior engineer who can own the entire technical side: architecture decisions, vendor selection, and all the code.
Teams with a backlog problem
You have more tasks than your team can handle. I plug in, take ownership of a stream of work, and make the backlog move.
How it works
A simple three-step path from first conversation to shipping.
Pick a plan and start risk-free
Pick a plan and start risk-free. Standard ($3,499) or Pro ($4,500). 14-day money-back guarantee — not happy, full refund.
Send your backlog
Send tasks via Slack or Trello. I'll confirm priorities and start on the highest-impact item.
Get results in 2-4 days
I work in focused 2-4 day cycles. You see progress every few days, not weeks.
I Keep It Simple
No long-term contracts, no complexity. Flexible terms designed to fit your business rhythm.
No contracts
Cancel your subscription at any time. No long-term commitment required.
Regular alignment calls
Scheduled check-ins to ensure I stay aligned with your priorities and progress.
Pause when needed
Unused days in your billing cycle are saved as credit for when you return.
Senior Backend Developer | PHP (Laravel) | REST APIs, AWS, PostgreSQL | DevOps, TDD, Event Sourcing
Cuez by Tinkerlist
“I strongly recommend Adriano as a highly competent and qualified back-end developer. I had the pleasure of working with him in the same company and it was always a great experience. He is an experienced professional, always open to new ideas and innovations, and careful with the code, ensuring the quality and efficiency of teamwork. In addition, Adriano has a very positive and collaborative attitude, and it has always been a pleasure to work with him. Undoubtedly, he is a great addition to any development team.”
No Compromises on Quality
Practices built over the years that help deliver reliable, maintainable software your team can depend on.
Quality
Reliable code and tests where appropriate. I focus on stability and maintainability so your software remains dependable over time.
Documentation
Clear context and handover for your team. All deliverables include sufficient documentation and comments for easy onboarding and future changes.
Improvement
I leave the system in better shape than I found it. Technical debt is addressed incrementally with every feature or change I make.
“Adriano is an extremely qualified and results-oriented professional, as a developer he is in search of constant learning and values the software quality and design patterns. As a person he is a simple and humble guy who is always willing to help and contribute in any situation. It was a pleasure working with him and I hope we can work together again.”
Engineering as a Subscription
Custom software requires ongoing maintenance to stay secure and functional. I offer simple monthly subscriptions that cover everything from hosting to new feature development.
Standard
$3,499/monthYour dedicated senior engineer for maintenance and features. I keep your software healthy, ship what you need, and handle everything from bugs to new functionality.
Keep your software running smoothly and build new features without the overhead of a full-time hire.
Best For
- Post-launch MVPs that need steady feature development
- Internal tools that need regular updates and new functionality
- Businesses with clear requirements who need reliable development
Includes
- Alignment call every two weeks
- Security patches & dependency updates
- Server/Cloud monitoring & cost optimization
- Bug fixes and reactive maintenance
- New feature development (when requirements are clear)
- UI improvements and enhancements
Need architectural strategy, hiring help, or technical leadership? See the Fractional CTO service.
Pro
Starts at $4,500/monthFor startups shipping more complex systems. Double the delivery capacity, custom architecture when the product needs it, and deeper vendor reviews. Best when your backlog is heavy and timelines are tight.
Ship more features, faster, across a larger surface area.
Best For
- Startups with a heavy backlog and tight timelines
- Products needing custom architecture work alongside feature delivery
- Teams shipping across multiple services or platforms at once
Includes
- Weekly alignment call
- All Standard features included
- Roughly double the delivery capacity of Standard
- Custom architecture work when the product needs it
- Deeper vendor and third-party code reviews
- Emergency support for critical production issues
- Priority position in my daily deep-work queue
Included in Both Plans
One task at a time
I work on one task at a time. Unlimited requests in the queue, fast 2-4 day cycles on whatever sits at the top.
Pause & Cancel Anytime
Monthly renewal with no long-term contracts. Pause unused days for later.
Slack, email, and Loom over meetings
I communicate over Slack, email, and Loom videos. Calls only when needed. No middleman.
Everything is 100% yours
Code, architecture, and all the work belong to you the moment you pay. I keep nothing.
Comprehensive Documentation
All code includes clear documentation and comments. Easy handoff for your team.
14-day money-back guarantee.
Not happy in the first 2 weeks? Full refund. Cancel anytime after.
Engineering subscription vs. alternatives
How the subscription model compares to typical hiring or agency options.
| Factor | Full-time hire | Agency | Subscription |
|---|---|---|---|
| Monthly cost | $12,000–$20,000+ | $10,000–$25,000 | $3,499–$4,500 |
| Time to start | 3–6 months (recruiting + onboarding) | 2–4 weeks | 1–2 weeks |
| Contract flexibility | Long-term commitment | Project-bound | Cancel anytime |
| Communication | Direct | Account manager (you rarely talk to the dev) | Direct (Slack/Trello) |
| Senior-level code | Depends on hire | Varies by team | Guaranteed (me, every time) |
| IP ownership | Employer owns | Varies (check contract) | 100% yours immediately |
“Adriano is an amazing professional that I had the pleasure to work with. Incredibly competent and can definitely get things done and done well. A very knowledgeable developer who gladly helped me and the team several times. I highly recommend him !!”
Why I Might Not Be a Good Fit
Transparency matters. This way of working is not for everyone. Here is when I might not be the right fit.
Daily stand-ups required
You require daily stand-ups or very frequent synchronous check-ins.
Hourly invoicing needed
You need detailed hourly invoicing or line-item breakdowns for accounting.
Large on-site team needed
You need a large, on-site team dedicated full-time to a single project.
One-off task only
You need a single quick task, not an ongoing partnership or subscription.
Your questions answered
Common questions about the subscription model and how I work with you.
- How many hours do I get each month?
- I do not bill by the hour, and I do not track hours. My focus is on delivering results at a consistently high level of quality. A fixed monthly fee provides predictability and aligns my incentives with yours: faster, better delivery benefits you. Every subscription includes a 14-day money-back guarantee — full refund if you are not satisfied in the first two weeks, no questions asked.
- How often will you and I communicate?
- On the Standard plan, I schedule an alignment call with you every two weeks. On the Pro plan, I meet with you weekly. Between calls, you have direct access via Slack or Trello for questions and updates. I respond within 24 business hours (and usually much sooner).
- May I pause the subscription?
- Yes. You may pause when needed, for example during a slow month or when you are on vacation. Unused days in your current billing cycle are saved as credit for when you return. There are no long-term contracts; renewal is monthly.
- What if I need to explain something in detail?
- That is perfectly fine. Record a short video using Loom or another tool and share it with me. I value context and clarity. If something remains unclear after reviewing your materials, you and I can schedule a brief call as needed.
- What engagement models are available?
- There are two subscription tiers: Standard ($3,499/mo) for maintenance and feature development, and Pro ($4,500/mo) for higher delivery velocity and more complex systems. Both are month-to-month retainers with no long-term contracts.
- What is the minimum commitment?
- There is no minimum commitment. Subscriptions are billed monthly and you can cancel anytime. Every subscription includes a 14-day money-back guarantee — full refund if you are not satisfied in the first two weeks, no questions asked.
- How long does onboarding take?
- Typically about one week. I start with a discovery call, review your codebase and backlog, confirm priorities, and begin the first task cycle within a few days.
- How does this service overlap with or complement my existing development team?
- The subscription works alongside your existing team. I can take ownership of a dedicated stream of work, review code from junior developers or third-party vendors, and provide architectural guidance without disrupting your team's workflows.
Case studies
See how I have helped businesses achieve their goals
Built and shipped an investor-ready MVP from scratch
GigEasy — backed by Barclays · Bain Capital · Zean Capital Partners
Built the entire technological base and delivered MVP in just 3 weeks, enabling a successful rapid launch and investor demo.
He builds quickly, but he also builds efficiently.— Gabriel Edlin, Ops/Strategy, GigEasy
Rescued a slow API that was blocking user growth
Cuez by Tinkerlist — backed by Tinkerlist group (Belgium)
Refactored the backend architecture, making the system far more responsive and scalable for the growing user base.
Always with many ideas to add and open to discuss the best approach to create the most scalable software as possible.— Rafael Camillo, Senior Software Engineer, Cuez by Tinkerlist
Unified payment orchestration across Asia and Europe
bolttech — backed by Tokio Marine · MetLife Next Gen Ventures
Delivered the payment orchestration platform at bolttech, a $1B+ unicorn, with 40+ integrations across multiple regions.
A results-oriented professional.— Jhonatan Amorim, Engineering Manager, bolttech
Rebuilt a real estate portal at a fraction of the cost
Rebuilt Imóveis SC's real estate portal as ImoHub — a faster, more scalable successor — handling 120k+ properties with sub-second search and drastically reduced AWS costs.
Security & Legal Protection
Your business and IP are protected through standard subscription agreements designed for ongoing engineering partnerships.
One simple contract covers all the work
A single Master Services Agreement (MSA) covers every subscription period. No new paperwork for each project. Quick to sign, protects both sides.
I invoice you as a US business
Contracts run as B2B, not employment. Keeps taxes and billing clean on both ends, and you won't get flagged for treating a contractor like an employee (IRS/IR35 safe).
Once you pay, everything is 100% yours
Code, architecture, assets. I keep nothing. Written into the contract as a Work Made for Hire clause, effective the moment payment clears.
Confidentiality (NDA)
Standard Non-Disclosure Agreement built into the terms. Your trade secrets, data, and business logic stay private.
Further reading
Custom Web App Development: Process, Cost & What to Expect (2026)
A founder's guide to custom web applications — from defining scope to understanding what drives costs.
Read articleHow to Build an MVP with Laravel and React: Timeline, Cost & Process
Step-by-step guide to shipping a validated MVP using Laravel and React without over-engineering.
Read articleHow to Hire a Senior Software Engineer: Complete Decision Framework
A decision framework for hiring senior engineers — when to hire, what to look for, and how to evaluate candidates.
Read articleGet a quote in 60s
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