You will get I'll architect your SaaS, deliver a production-ready technical spec and ADR
Project details
You don't need a PM who just forwards emails to developers, or a developer who ignores the roadmap. You need one person who does both — and has shipped real SaaS end to end.
I'm a Technical Project Manager and full-stack developer. This project delivers a build-ready foundation:
Technical specification — data model, API surface, key flows
Architecture Decision Records (ADRs) — every major decision documented with the why and the trade-offs
Recommended tech stack, matched to your budget and scale
Ranked risk list, with mitigations
Need the build too? Most clients start with this spec, then hire me to develop it (NestJS / Next.js / Prisma / PostgreSQL). The spec becomes the blueprint we build from — so the estimate is precise and there are no surprises.
For founders hiring developers, teams starting a product, or anyone who inherited a project and needs a sober technical read first.
I've made these calls with my own money on the line as a SaaS founder, and I document for a living. Message me a couple of sentences about your project before ordering — straight answer, every time.
I'm a Technical Project Manager and full-stack developer. This project delivers a build-ready foundation:
Technical specification — data model, API surface, key flows
Architecture Decision Records (ADRs) — every major decision documented with the why and the trade-offs
Recommended tech stack, matched to your budget and scale
Ranked risk list, with mitigations
Need the build too? Most clients start with this spec, then hire me to develop it (NestJS / Next.js / Prisma / PostgreSQL). The spec becomes the blueprint we build from — so the estimate is precise and there are no surprises.
For founders hiring developers, teams starting a product, or anyone who inherited a project and needs a sober technical read first.
I've made these calls with my own money on the line as a SaaS founder, and I document for a living. Message me a couple of sentences about your project before ordering — straight answer, every time.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$199
|
Standard
$599
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 3 days | 6 days | 9 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 5 | 15 | 25 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $200
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$25Frequently asked questions
About Romeu
Tech PM Who Codes SaaS Delivery, NestJS/Next.js, AI-Assisted Dev
Manaus, Brazil - 1:57 pm local time
That's what I do. I'm a Technical Project Manager and full-stack developer who plans the architecture, runs the delivery, and writes the code when it matters. No translation layer between "the business" and "the engineers," because I'm fluent in both.
Where I deliver the most value:
1 - Multi-tenant SaaS, from spec to production — I've architected and built white-label SaaS platforms on NestJS / Next.js / Prisma / PostgreSQL, including job queues (BullMQ), object storage (MinIO), and AI integrations. I know the failure modes before they happen.
2 - Agile delivery that actually ships — Scrum/Kanban, backlog that maps to value, sprints that close. PMP candidate, MBA in Project Management. I've led delivery at companies and as a solo founder, so I optimize for outcomes, not ceremonies.
3 - AI-assisted development — I run a Spec-Driven Development workflow that pairs detailed specs with AI code generation. The result: faster delivery without the "vibe-coded," unmaintainable mess. I can document this so your team can repeat it.
4 - Rescue & cleanup — Inherited a stalled project, a vague spec, or a codebase nobody understands? Bridging messy reality and a working plan is my specialty.
A few things clients tell me they value:
1 - I give you a straight answer on scope and risk — even when it's not what you want to hear.
2 - I write specs and ADRs (architecture decision records) so decisions are documented, not lost in Slack.
3 - Async-friendly and reliable across time zones (based in Brazil, GMT-4).
Recent work:
1 - TreinoToDay — "Built and shipped a white-label SaaS for personal trainers, including an AI video-personalization pipeline, as sole architect and developer."
2 - Webscola — "I created and launched a white-label SaaS for schools, including a RAG and AI system to track overdue tuition payments from parents and a metrics pipeline to track student academic performance, as well as mobile apps for Android and iOS where parents can monitor their children's academic life, as the sole architect and developer."
If you're building a SaaS product, modernizing an existing one, or need someone who can own delivery and the technical decisions — let's talk. Send me a note about your project, and I'll tell you honestly whether I'm the right fit.
Steps for completing your project
After purchasing the project, send requirements so Romeu can start the project.
Delivery time starts when Romeu receives requirements from you.
Romeu works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & scope confirmation
Review your inputs, confirm scope and the right approach. Ask any clarifying questions.
Architecture & stack decisions
Define the tech stack, multi-tenancy approach, and core architecture; draft the key ADRs.